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FAQList
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
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Comp.Sys.Acorn FAQ List. Last alterations 4/Jan/1994
=====================================================
----------------------------------------------------------------------------
Recent alterations :-
Question 5.7 ammended.
----------------------------------------------------------------------------
Contained below is a list of the most commonly asked questions about
Acorn machines in comp.sys.acorn. Before posting to comp.sys.acorn, if you
are new to the group, check to see if your question(s) are already answered
below. Corrections and/or additions to the list can be emailed to :-
banks_p@kosmos.wcc.govt.nz
And I'll try to add them as soon as possible....
This FAQ is posted bi-weekly to comp.sys.acorn, comp.sys.acorn.announce
and news.answers. The posted sections of the FAQ is available from an email
server at MIT. To request the FAQ from this server send an email to
mail-server@rtfm.mit.edu. No subject is needed and the body should be :-
send /pub/usenet/news.answers/acorn/faq
Also the FAQ itself and sub-sections of it are stored in an email server
I personally run. See section 7.4 for further details on how to access this
email server.
Lastly this list is copyright to Philip R. Banks but permission is
granted for free distribution of the entire list or quoted segments of it.
If you wish to include segments of the list into other documents then proper
attribution must be performed and if you wish to include and part of the
list, or the list in full, in any commercial product then express permission
must be obtained from myself.
Index of Questions.
===================
The questions have been catagorised loosely into related sections, in an
effort to make finding the desired information simpler and quicker.
Section 1: Acorn Hardware and Operating Systems.
------------------------------------------------
1.1) What kind of Acorn machines are there?
1.2) What versions of the processor are there and what are their
capabilities?
1.3) What are the main new features of RISC OS 3?
1.4) What are the differences between RISC OS 3.5 and RISC OS 3.11 & 3.10?
1.5) How compatible with other systems is an Acorn machine?
1.6) What are the graphics capabilities of the Acorn machines?
1.7) Is Virtual Memory possible under RISC OS?
Section 2: Upgrades and Expansion.
----------------------------------
2.1) What are the memory limits of the various Acorn machines?
2.2) What is a second processor and what second processors are there?
2.3) Can PC VGA Monitors be added to an Acorn machine?
2.4) Are there any cards for IBM PC or compatible machines that Acorn have
produced?
2.5) What is a VIDC enhancer? Will I need one for my new multisync monitor?
2.6) What configuration of serial cable should I use on my machine for modem
work?
2.7) How can I get unfiltered sound from an Acorn machine?
2.8) Can I connect a SCART monitor to my Acorn machine?
Section 3: Configuration.
-------------------------
3.1) What is ADFSBuffers and what is the best setting for it?
3.2) How do I enable solid drags in RISC OS 3?
Section 4: Hardware problems.
-----------------------------
4.1) My hard drive gives me disc errors when I use, what do the error
numbers mean?
4.2) My disc gives me a 'Broken Directory' or my Free Space Map is corrupt,
what can I do?
4.3) What does the power on self-test check and how does it signal errors
back to you?
4.4) My Real Time Clock has paused, how do I restart it?
4.5) Being of a non-humanoid race I don't have hands, only tentacles. Are
there alternatives to the keyboard for data entry into Acorn machines?
Section 5: Software Issues.
---------------------------
5.1) When using DOS discs I often find the last parts of files haven't been
written correctly, what am I doing wrong?
5.2) I have obtained [PD] program X but find it needs [version Y.YY of]
module Z, which I don't have. Where can I get it?
5.3) What is the current File-type allocation ranges and why won't Acorn
provide a full file-type list?
5.4) Is there a Modula 2 compiler for the Arc?
5.5) What version of module X can I assume that all users have?
5.6) What's the minimum version of module X that my program needs? What
features were introduced/what bugs were fixed in which versions?
5.7) What Public Domain Languages are available for Acorn machines?
Section 6: Viruses.
-------------------
6.1) How can I protect against viruses?
6.2) Where can I obtain !Killer?
Section 7: Net resources.
-------------------------
7.1) What archives/FTP sites are available?
7.2) What Acorn related companies are available on the net via email?
7.3) Why have there been no postings to comp.{binaries,sources}.acorn
recently?
7.4) How to retreive the FAQ from the source... { Or how to use my email
server. }
7.5) What WWW pages are out there for Acorn topics?
----------------------------------------------------------------------------
Section 1: Acorn Hardware and Operating Systems
----------------------------------------------------------------------------
1.1) What kind of Acorn machines are there?
The full list of Acorn made machines is somewhat lengthy now and are
mostly no longer in manufacture. Accordingly this list distributed in the
FAQ includes only Archimedes/ARM based machines, which are the currently
manufactured by Acorn. A full list is maintained in my email server under
the filename 'MachineLst'. This is, as far as I am aware, a complete list of
all Acorn machines made with the possible exception of the latest machines
for which I have yet to get the detailed specifications.
A4 - Acorns first portable machine. The A4 is functionally an A5000 in
portable form. Featuring power save modes, an LCD screen and software
configuration of the power saving features it was released July 1992. It
is called the A4 because it's footprint on a desk is apparently that of
an A4 piece of paper.
2048k Memory
Advanced Disc Filing System by default with High Density drives.
ARM 3 processor. (24 MHz normally, 6 MHz in power save mode.)
12 MHz RAM. (3 MHz in power save mode.)
2048k OS in ROM.
~13.25 MIPS.
A30x0 - Two models of this machine exist the A3010 and the A3020. Both are
designed as low end 'family solution' machines. They are also among the
first machines to feature the ARM250 processor offering improved
performance over an ARM2 (but less than an ARM3) and are designed to
supplement the A3000 machine as a low cost entry machine into the Acorn
world. Its other main claim to fame is it is the first Archimedes series
machine that features joystick ports (only in 3010 model, the 3020 has a
network connector instead.). Launched August 27th 1992.
1024k Memory
Advanced Disc Filing System by default with High Density drives.
IDE 60 Mb Hard Drive (only in A3020 with HD option).
ARM 250 processor
12 MHz RAM.
2048k OS in ROM.
~7.2 MIPS
A4000 - This is a higher end more expandable version of the A30x0 series
machines and is in a three box format similar to the A5000. It also is
driven by an ARM 250 processor however it features over the A30x0
machines optional Ethernet & Econet ports, a high density floppy drive
and an 80Mb IDE drive by default. The aim of this machine is strongly
towards the home office and more 'serious' applications than the A30x0
series. Launched August 27th 1992.
2048k Memory
Advanced Disc Filing System by default with High Density drives.
IDE 80 Mb Hard Drive by default.
ARM 250 processor
12 MHz RAM.
2048k OS in ROM.
~7.2 MIPS
A5000 (alpha variant) - This is an improved variant on the A5000 featuring a
considerably faster processor, 33 MHz, with the ability to have a
similarly clocked FPA unit installed. It also features a considerably
larger base hard drive size of 160 Mb on the 4 Mb model, the lower 2 Mb
model still as an 80 Mb drive. Finally it has improved alterations to it
allowing easy expansion of the machine to 8 Mb of memory by default. (IE
without having to use third party solutions.) Released 10th September
1993.
2048k Memory
Advanced Disc Filing System by default with High Density drives.
IDE interface by default.
ARM 3 processor. (33 MHz)
12 MHz RAM.
2048k OS in ROM.
~16.96 MIPS.
Acorn Risc PC series
This is the next generation and architecture of machines -
superceding, but compatible with, the Archimedes range of machines. All
of them feature a highly configurable and modular system that makes a
bewildering variety of options available. All are founded on the 'second
generation' chipset featuring VIDC20, IOMD and the newer ARM6, and
better, cell processors. This new range was launched on the 15th of
April 1994 with the RiscPC 600 series of machines.
The new machines feature the processor card option, the concept of
which was first shown in the A540 as well as a unique second processor
slot allowing the machines to have two processors in the system, at once,
of radically different types. Simply by slipping a 486 chip in, on an
appropriate board of course, Intel based software can be run on the
machine adjacent to native ARM programs. Both processors share the system
resources and can be allocated memory and the like to use. Memory
management has been improved with memory paging always being done in 4Kb
pages.
Further more the podule interface has been extended with DMA to and
from podules, extended addressing, 32bit data pathways from the IO
system as well as a vastly expanded memory map for each podule. Real-time
video from the IO system becomes a reality with high speed and data
transfers applications being boosted considerably. These machines are to
be the ones to carry Acorn for the next three to six years and look set
to do so nicely.
RiscPC 600 2M HD210
2048Kb Memory. (No VRAM)
Advanced Disc Filing System by default with a High Density drive.
IDE interface by default. (210 Mb.)
ARM 610 processor (30 MHz)
16 MHz RAM.
2048k OS in ROM.
~26 MIPS. (Arbitrary estimate.)
RiscPC 600 5M HD210
4096Kb Memory. (1Mb of VRAM)
Advanced Disc Filing System by default with a High Density drive.
IDE interface by default. (210 Mb.)
ARM 610 processor (30 MHz)
16 MHz RAM.
2048k OS in ROM.
~26 MIPS. (Arbitrary estimate.)
RiscPC 600 9M HD420
8192Kb Memory. (1Mb of VRAM)
Advanced Disc Filing System by default with a High Density drive.
IDE interface by default. (420 Mb.)
ARM 610 processor (30 MHz)
16 MHz RAM.
2048k OS in ROM.
~26 MIPS. (Arbitrary estimate.)
----------------------------------------------------------------------------
1.2) What versions of the processor are there and what are their
capabilities?
The details of all current ARM chips and their capabilities are contained
within a file stored in my email server, the filename is 'ARMChips'. See the
instructions near the end of the FAQ for requesting this file.
----------------------------------------------------------------------------
1.3) What are the main new features of RISC OS 3?
This information is now contained in my email server. If you wish to know
the 'new' features of RO3 over RO2 then send a request to my email server,
as detailed at the start of the FAQ, for the filename 'RO3diffs'.
----------------------------------------------------------------------------
1.4) What are the differences between RISC OS 3.5 and RISC OS 3.11 & 3.10?
There are alot of behind the scenes differences but the most obvious
changes are :-
-The system font has been replaced by an outline font.
-The Filer uses solid drag icons, including a 'package' icon for multiple
file drags.
-Error dialogue boxes can now have a button for requesting interactive help
on the error.
-Windows can have textured backgrounds by default. (This feature can be
used independantly of the application supporting it.)
-Applications can have up to 28Mb of memory apiece, if available.
-The Palette utility has been replaced by the Display Manager, offering an
alternative method of choosing screen modes from the older mode number
method.
-The Task Manager allocates memory via logarithmicly scaled slider bars.
-Rogue tasks can be stopped, or killed, by pressing Alt-Break.
-The CMOS & hard drive can be protected from alteration.
Also, due to the new hardware, there are alot of behind the scenes
extensions to the OS including the provision of new dynamic areas, extended
podule support, hard drive locking and a wealth of other features.
----------------------------------------------------------------------------
1.5) How compatible with other systems is an Acorn machine?
PC :- The Archimedes can handle DOS discs (720k; the A5000 and later models
can also handle 1.44M floppies). In RO3, this is built in, under RO2 you
have to use one of the (PD) utilities. There are two PC (software)
emulators that can handle most PC software, three if you count the fact that
Acorn's offering is split into two emulator programs. There are also PC
cards, containing an 80x86 processor and other PC hardware, which uses the
Archimedes' disc and video. All emulators are multitasking (and not PD).
RiscPC machines, by adding a 486 processor card, can fully emulate a PC.
Unix :- Unix software can be ported (and in fact many packages already have
been) with the help of UnixLib, which is PD. Memory-hungry ports, such as
gcc, can be run with the aid of !Virtual (also PD). Of course if your really
desperate to run Unix software it might be advisable to buy RISCiX, the
Acorn flavour of Unix.
Mac :- Software has been released that reads Macintosh High Density discs
and there is some out there which claims to read the low density ones as
well (I have yet to verify this personally though) so that the shifting of
files to and from a Macintosh is possible. Also most modern Macintoshs can,
like Acorn machines, read and write PC format discs so transfer is possible
via that medium as well. There is no Mac emulator available.
Atari ST :- Like PC floppies, the Archimedes can read, write and format
ST-format floppies. No emulator for the ST is known.
Amiga :- The amiga uses an unusual disc format that is not easily read by
other machines. Accordingly there is currently no Amiga format disc reader
available. But Amiga's can read PC discs, so again transfers can occur via
that medium. There is no Amiga emulator.
Spectrum :- There are emulators around for this and Amstrad, the owners of
the Sinclair copyright, have released permission for the ROM images, needed
to run these emulators, to be copied and released with the emulators.
Apple][ :- Again emulators are available for this. However they, like the
Spectrum emulators, require a copy of the ROM image to work. The copyright
of the ROM image for these machines, as far as I am aware, prevents them
being distributed, so you have to source your own copy of it.
----------------------------------------------------------------------------
1.6) What are the graphics capabilities of the Acorn machines?
All the Acorn machines are highly upgradable so that they can achieve
colour depths and resolutions beyond what is listed here. What is listed
here is the default capabilities of the machines as supplied by Acorn. As
such it should be taken as a guide to the minimum abilities of the hardware.
8 bit machines. This covers the BBC Model B, BBC Model B+, Master 128 and
ABC range of machines. The display hardware was based on the
6845CRTC chip and was highly flexible for it's time. Resolutions
possible :-
X res. Y res. Colours
640 256 2
320 256 2,4
160 256 4,16
As well a Teletext character graphics mode and two text only modes
were provided by default. The palette range was 16 colours with
modes using less than 16 colours capable choosing any mix of the 16
colours, up to the number displayable of course, for display.
8 MHz ARM based machines. This is the original Archimedes range of
machines and covers the A300 series, A400 series, R140 and A3000
machines. The increased capability of the VIDC1a chip dramatically
enhanced the resolutions and colours depths possible, namely :-
X res. Y res. Colours
160 256 4,16,256
320 256 2,4,16,256
640 250 4,16
640 256 2,4,16,256
640 480 2,4,16,256
640 512 2,4,16,256
1056 250 16
1056 256 16,256
1152 896 2
As can be seen this quite a wide variety of default screen modes.
Most are provided to allow driving the various kinds of monitors out
there easier, since they are suited to that monitor. The palette
range was 4096 colours (12 bit) but the VIDC1a only had 16 hardware
palette registers. This meant that in screen modes with sixteen
colours or less then the colours could be mapped to any of the 4096
available.
However in 256 colour modes 4bits of the colour data are hardware
derived and cannot be adjusted. The net result was in a 256 colour a
block of 16 colours could be assigned as desired with that block of
16 covering a range of the 4096 available colours.
12 MHz ARM based machines. This covers the A3010, A3020, A4000, A4, A500,
A540 & R260 machines. Here the VIDC1a was still used but it had an
extra oscillators added and the primary oscillator was faster (32
MHz) giving finer pixel resolutions. The extra oscillator provided
true PC VGA style compatibility for monitors instead of a 24 MHz
'faked' version which sometimes caused problems with intolerant VGA
monitors.
X res. Y res. Colours
160 256 4,16,256
320 256 2,4,16,256
640 200 2,4,16,256
640 250 16
640 256 2,4,16,256
640 352 2,4,16,256
640 480 2,4,16,256
640 512 2,4,16,256
768 288 2,4,16,256
800 600 2,4,16
896 352 2,4,16,256
1056 250 16
1056 256 16,256
1152 896 2
Because the display hardware was essentially the same as the 8MHz
machines' the palette handling was identical.
Risc PC machines. This covers all Risc PC in the Risc PC 600 series. Here
the newer VIDC20 chip has been used and the display capabilities are
somewhat extended. Namely :-
X res. Y res. Colours
160 256 4,16,256
320 256 2,4,16,256
640 200 2,4,16,256
640 250 4,16
640 256 2,4,16,256
640 352 2,4,16,256
640 480 2,4,16,256
640 512 2,4,16,256
768 288 2,4,16,256
800 600 2,4,16,256,32k*,16M**
896 352 2,4,16,256
1024 768 16,256*,32k**
1056 250 16
1056 256 16,256
1152 896 2
1280 1024 4,16*,256**
1600 1200 16*,256**
* Requires 1 MB of VRAM
** Requires 2 MB of VRAM
With the addition of Video RAM (VRAM) to the Risc PC the base
capabilities are a touch variable, thus the note next to some of
entries. All other modes are available with standard DRAM.
Furthermore the new VIDC20 has 256 palette registers, compared to
the VIDC1a's 16, and a palette range of 16 million colours. Exactly
how the colour mapping in 32,000 modes is handled is not yet clear.
Again these are just standard screen modes provided, and even
perhaps not all of them - the Risc PC is completely configurable in
display resolutions and capabilities.
It must be stressed again that these are merely the resolutions and
colour depths defined by the machines operating systems. In all of the
machines cases there are both hardware and software extensions that alter
and increase the list.
----------------------------------------------------------------------------
1.7) Is Virtual Memory possible under RISC OS?
Short answer, full VM is *not* possible under the current versions of
RISC OS. The problem is that most of RISC OS works in SVC mode, if a
DataFetch abort occurs then R14_svc *is* corrupted. This makes returning
from the SWI somewhat problematic. This is a hardware limitation with the
ARM2 and ARM3 cell chips. Future hardware using ARM6 or better processor
cells have special memory abort modes that alleviate this problem so future
machines and incarnations of RISC OS may well have VM available. Indeed the
new RiscPC machines make prime candidates for having virtual memory.
However limited solutions are available now. !Virtual is one such
solution allowing VM for a user process using a limited subset of SWI's that
are carefully 'protected' against R14_svc being corrupted. Such solutions
suffer from the restricted set of SWI's they support and are mostly useful
for batch style processing jobs like compilation or memory intensive
processing jobs.
---------------------------------------------------------------------------
Section 2: Upgrades and Expansion.
----------------------------------------------------------------------------
2.1) What are the memory limits of the various Acorn machines?
For the most part the 8 bit machines were limited to a maximum of around
256k of memory. Although various expansion systems including second
processors effectively meant the upper limit was about 1 Meg. (Although I
have been told of a second processor with 4 Meg of memory in it. )
For the early 32 bit machines *the* upper limit currently is 16 Meg of
memory. Not all of the range of machines are capable of this however and
the list looks something like this :-
A3xx - 8 Mb maximum through third party, 1 Mb official limit.
A4xx - 8 Mb maximum through third party, 4 Mb official limit.
A4xx/I - 8 Mb maximum through third party, 4 Mb official limit.
A3000 - 4 Mb maximum through third party, 2 Mb official limit.
A540 - 16 Mb maximum.
A5000 - 8 Mb maximum through third party, 4 Mb official limit.
A4 - 4 Mb official limit.
A30x0 - 4 Mb official limit.
A4000 - 4 Mb official limit.
A5000 - 8 Mb official limit. (alpha variant of the A5000)
Newer RiscPC machines have an official upper limit of 256 Mb, plus 2
Mb of VRAM, on all models. However this does require you using 128 Mb
SIMMS which are currently not very common...
----------------------------------------------------------------------------
2.2) What is a second processor and what second processors are there?
A second processor was the generic name for a range of parasite
processors that could be linked to Acorn's 8 bit machines via what was
called the `Tube` interface. Basically the host machine became dedicated to
handling the Input and Output while the second processor would do the higher
level functions (like running your programs). The second processor ran
asyncronously to the host processor allowing incredible increases in
execution speed for programs. A wide range of processors were supported this
way allowing Acorn's eight bit range of machines to remain viable and useful
for much longer than their technology would suggest.
The Second Processors that existed are :-
Z80 second processor.
6 MHz RAM.
64k Memory.
CP/M OS.
External second processor for all eight bit machines.
6502 second processor.
3 MHz RAM.
64k Memory.
Extended version of the BBC MOS.
External processor for all eight bit machines.
32016 second processor.
6 MHz RAM.
256k-4096k Memory.
Panos.
External processor for all eight bit machines.
ARM 2 second processor.
8 MHz RAM. (At a guess...)
4096k Memory.
Brazil OS.
External processor for all eight bit machines.
6502 co-processor. (internal second processor).
4 MHz RAM.
64k Memory.
Extended version of BBC MOS.
Internal processor for Master 128 machines but could be fitted external to
the other eight bit machines.
80186 co-processor.
10 MHz RAM.
512k Memory.
DR-DOS+ with GEM.
Internal processor for Master 128 machines but could be fitted external to
the other eight bit machines.
----------------------------------------------------------------------------
2.3) Can PC VGA Monitors be added to an Acorn machine?
It depends on what monitor you have, and what Acorn machine you have.
There are two main types of PC VGA monitors out there...
1) Fixed Frequency
These monitors will only display video signals with certain
line and refresh rates. They will typically only display
CGA / EGA / VGA modes.
2) Multi Frequency
These monitors will display any video signal within a certain
range, typically 30-50Khz line rate and 50-80Hz refresh rate.
Type 1 almost always require separate syncs as the monitor uses the
polarity of the syncs (mainly positive going negative or mainly negative
going positive) to determine what the line and refresh rate should be.
Type 2 vary. Some require seperate syncs (vertical and horizontal) and
others will work with composite syncs (vertical and horizontal EOR
together).
As PC monitors typically start at a line rate of 30Khz compared to the TV
broadcast modes (mode 12 etc.) that have a line rate of 15Khz, VIDC has to
do more work to obtain a 30Khz line rate. This means that you computer will
slow down silghtly if you use a 30Khz+ line rate monitor. If you have an ARM
3 fitted such slow downs will probably be negligible.
Now, depending on what type of Archimedes you have depends on what type
of monitor you can use.
A540 / A5000 / A4 / A3010 / A3020 /A4000
Has software control over the polarity of the syncs and what
frequency VIDC is clocked at.
The A540 with RISC OS 2 can only use modes 26-28 (640x480) and 31
(800x600). However, by changing links and a *configure option, you can
get the computer to generate seperate syncs with no problem.
The other machines with RISC OS 3 can do even better. If you tell the
computer that you have a VGA monitor it will re-map all of the
15Khz line rate modes up to 30KHz line rate. This means that
you can play your games that require mode 12 / 13.
However, as a PC monitor is designed to display 320 lines
minimum then you will get a 'letterbox' effect as mode 12 has
only 256 lines.
All these machines have 24Mhz, 25.175Mhz and 36Mhz crystals to drive
VIDC with. The 25.175Mhz crystal is needed to obtain the correct
video rates for PC monitors displaying 640x480 screens. The 36Mhz
crystal is used to obtain higher resolution modes, like 800x600x16
colours.
A3000
This can generate seperate syncs but requires links to be set to
determine the polarity. It has only a 24Mhz crystal and can
therefore only drive 'forgiving' monitors correctly that don't
mind the 640x480 video mode timings being slightly incorrect.
The links to change, to set the sync polarity, are as follows:
Link 24: Change from SOUTH to NORTH
Link 25: Change from OPEN to CLOSED
In order to obtain proper timings, and software control of the
sync polarity, you will need a VGA VIDC Enhancer for the A3000.
A400 series.
The situation gets more complex. Due to an 'error' in the PCB
/ circuit diagram, the A400 series cannot generate seperate
syncs satisfactorily. The video signal loses the green component
when seperate syncs is selected.
As standard, there is no polarity control over the syncs. In
common with the A3000, there is only a 24Mhz crystal.
If the PC monitor can handle composite syncs then the monitor
can be used in 640x480 mode only.
A300 series.
Most, if not all, of the A300 series had the circuit board
hardwired into composite mode continuously. There is only a 24Mhz
crystal, and only composite PC VGA monitors can be used.
RiscPC series.
This has a *very* flexible VIDC in it and is quite capable of driving
PC monitors with no trouble.
However to connect an older machine (A3000,A300,400 series) to a VGA
monitor, you will need a means of connecting the standard 15-pin VGA plug to
the 9-pin socket in the computer. A number of companies sell 'converters',
but all this boils down to is a lead with the following configuration :-
.------------------------. VGA 15-pin socket
\ 1 2 3 4 5 /
\ 6 7 8 9 10 /
\ 11 12 13 14 15 /
'------------------'
.------------------------. Arc 9-pin plug
\ 1 2 3 4 5 /
\ /
\ 6 7 8 9 /
'------------------'
Signal VGA pin Arc pin
Gnd 10 9
Red 1 1
Green 2 2
Blue 3 3
R gnd 6 6
G gnd 7 7
B gnd 8 8
H 13 4
V 14 5
In conclusion, apart from the A5000 and newer machines, no computer as
standard can drive either a fixed frequency or multi-frequency PC monitor in
all of the Archimedes modes satisfactorily. However VIDC enhancer boards can
be bought to upgrade an Archimedes series machine to handle the needed
timing and signals.
----------------------------------------------------------------------------
2.4) Are there any cards for IBM PC or compatable machines that Acorn have
produced?
Yes. Three cards in total :-
Springboard.
ARM 2 processor.
4096k Memory.
8 MHz RAM.
Brazil OS.
PC ARM development system.
Precursor to Springboard. Hardware functionally identical.
Ecolink.
An econet link card for the PC.
----------------------------------------------------------------------------
2.5) What is a VIDC enhancer? Will I need one for my new multisync monitor?
A VIDC enhancer is basically a clock change for your VIDC. Most Arcs (bar
the A540 and newer machines) have 24 MHz VIDC chips installed in them. A
VIDC enhancer increases this to 36 MHz allowing much higher resolution
screen modes to be displayed on your Arc. (800x600x16 or SVGA standard
becomes available.) You do *not* need one to use a Multisync monitor - the
standard VIDC handles that just fine. However having a VIDC enhancer is only
really useful if you do have a Multi-sync monitor.
Note a VIDC enhancer is unneccesary and incompatible with the RiscPC
range of machines.
----------------------------------------------------------------------------
2.6) What configuration of serial cable should I use on my machine for modem
work?
Here follows a diagram of the necessary connections for common terminal
programs to work properly. They are as far as I know the informal standard
agreed upon by commercial comms software developers for the Arc.
Pins 1, 4, and 8 must be connected together inside the 9 pin plug. This
is to avoid the well known serial port chip bugs. The modem's DCD (Data
Carrier Detect) signal has been rerouted to the Arc's RI (Ring Indicator)
most modems broadcast a software RING signal anyway, and even then it's not
really necessary to detect it for the modem to answer the call.
Arc (9 pin) Modem (25 pin)
----------- --------------
+---1---DCD
|
| 2---RxD------------------------RxD----3
|
| 3---TxD------------------------TxD----2
|
+---4---DTR------------------------DTR---20
|
| 5---0v-------------------------SG-----7
|
| 6---DSR------------------------CTS----5
|
| 7---RTS------------------------RTS----4
|
+---8---CTS
9---RI-------------------------DCD----8
Of course you can connect the Modem pin 20 to any one of pins 1, 4, or 8
on the Archimedes plug, as they are all connected together anyway.
Chocks Away Extra Missions (the flight simulator from 4th Dimension)
suggests that the serial cable be wired as above except that pins 1-4-6 are
connected together and the modem's CTS (pin 5) be connected to the Arc's pin
8 (ie the connections at pins 6 and 8 be swapped over at the Arc's end).
This has been and it also seems to work fine.
However newer Arc's like the A5000 have come out (and indeed the
occasional A310) with a `corrected` serial port. This newer serial port
operates as it should and is directly compatible with standard PC cables.
Most comms software about at the moment does not take this in account and
assumes that you have a cable patched in the manner described above. If you
do not use such a patched cable on these `fixed` serial ports the software
will generally fail to work.
----------------------------------------------------------------------------
2.7) How can I get unfiltered sound from an Acorn machine?
All Acorn machines are equipped with a sound filter designed to remove
high frequency harmonics from the sound output. However this does cause a
muffled feel to the sound as on some machines the filter is a little too
excessive and it filters out valid frequencies. Also the filter is optimised
for 20.833 kHz output and has less desirable results when the output rate is
changed. Accordingly people who do audio work often want to bypass the
filter.
On all machines bar the A3000 there is the Internal Auxiliary Audio
Connector (usually called link LK3), which can be easily plugged into to
provide the unfiltered output. This connector has 10 pins on it and is
usually found near the headphone socket on the motherboard. The pins are :-
1 Unfiltered Left
2 Ground
3 Filtered Left
4 Ground
5 Auxiliary Input
6 Ground
7 Filtered Right
8 Ground
9 Unfiltered Right
10 Ground
Simply hook into the Unfiltered outputs.
On an A3000 you need two 10uF 16V ALEC capacitors. Look for chip LM324
(IC39) and hook the capacitors like this :-
Pin 1 --> --|+ |--- Unfiltered Left
Pin 2 --> --|+ |--- Unfiltered Right
The Risc PC & A400 machines have a connector similar to the A5000.
There are several caveats to this procedure. Opening your machine may
void your warranty and most definitely should not be attempted if you are
unsure of the procedure. Do *not* unplug/plug the unfiltered audio output
while the machine is turned on, by bypassing the filter you also bypass the
normal protective circutry for the audio output.
Finally you will hear higher harmonics present in the audio signal so you
will need to connect the signal to a filter of some kind to reduce this
extra noise.
----------------------------------------------------------------------------
2.8) Can I connect a SCART monitor to my Acorn machine?
If you have an older Acorn machine with a nine pin video socket, then
yes and here is the wiring diagram :-
.------------------------. Arc 9-pin plug
\ 1 2 3 4 5 /
\ /
\ 6 7 8 9 / Case
'------------------'
_____________________
|19 1| SCART 21-pin plug
| | | | | | | | | | | |
/ |
/ | | | | | | | | | | |
/___20_________________2_| 21 (metal casing)
A SCART connector is also known as a Euroconnector or a Peri-Television
connector.
Arc SCART
Case | ------------- 21 Case
Red 1 ------------- 15 Red
Green 2 ------------- 11 Green
Blue 3 ------------- 7 Blue
CSYNC 4 ------------- 20 Composite video input
Ground (0V) 6 -+---------+- 13 Red ground
Ground (0V) 7 -+ +- 9 Green ground
Ground (0V) 8 -+ +- 5 Blue ground
Ground (0V) 9 -+ +- 13 CVBS video ground
Ideally each ground wire should be linked to a separate Arc pin.
If you have a newer Acorn machine, with the 15 pin high density video
socket then I am currently both unsure a) whether such a connection is
possible and b) what the wiring diagram for such a connection is.
As is usual care must be taken when doing this procedure. Older Acorn
machine did not have their VIDC chips fully buffered and unplugging/plugging
cables from the video socket while the machine is turned on can cause
damage to the video circutry.
----------------------------------------------------------------------------
Section 3: Configuration.
----------------------------------------------------------------------------
3.1) What is ADFSBuffers and what is the best setting for it?
ADFSBuffers are Read Ahead and Write Behind buffers for ADFS on your
Archimedes. These are designed to improve the speed of filing operations by
doing work at optimum times. There are some side effects of using them
though. When active under RISC OS v2.00 and v2.01 discs *must* be dismounted
before being removed from the floppy drive. Failure to do so results in the
dreaded 'FileCore in use.' error. However if you are prepared to sacrifice
the speed improvement they give configuring the buffers to 0 does remove
this problem. (Or so I am informed.)
Under RISC OS v3.00, as supplied with the early A5000 machines, these
buffers generate a different problem and must *always* be configured off.
Failure to do so results in spurious errors when using the Hard Drive on an
early A5000. Symptoms include reformatting of crucial sectors of the disc,
disc address errors and general failure to save files to the drive. So when
using an A5000 with RISC OS 3.00 remember to configure them off!
With RISC OS v3.10 all of the old problems have been cured with a new one
introduced. Namely that if you have only a few ADFSBuffers configured and
are accessing the floppy drive then your machine can occasionally lock up
completely for you. It appears that any value of ADFSBuffers above 8 causes
that problem to be largely alleviated (read it only occurs rarely at these
settings). So under RISC OS 3.10 it is reccomended that you set your
ADFSBuffers to 8+. There is a patch module available, called ADFSUtils, that
does fix this problem - contact your local dealer for a copy of it.
RISC OS 3.5 seems to have all of these problems cured and no new bugs
introduced. Under 3.5 the number of ADFSBuffers can be left at the OS's
discretion and generally the OS chooses a number based on the amount of
memory present in your RiscPC.
As for the optimum settings for ADFSBuffers, as far as I am aware no one
has done any speed tests to see what is the best setting. Presumably though
Acorn will have arranged for the system to start up (Well except for
RO3.00...) in the optimum state for most uses. I would be interested in
anyone who has done speed tests sending me the results of their
investigations....
----------------------------------------------------------------------------
3.2) How do I enable solid drags in RISC OS 3?
Solid drags are controlled by bit 1 in byte 28 of the CMOS RAM. Setting
this bit enables solid drags on all solid drag 'aware' applications. However
setting this bit using a *FX command from the command line is a foolish way
to do it, as this will unset/set the other 7 bits in that byte which have
meaning to FileSwitch and the Wimp. Accordingly the reccomended way to set
this bit is using a program like this BASIC one enclosed below :-
REM Toggle state of DragASprite bit in CMOS
REM Read byte
SYS "OS_Byte",161,&1C TO ,,byte%
REM EOR byte with mask for bit 1
byte% = byte% EOR 1<<1
REM Write byte back again
SYS "OS_Byte",162,&1C,byte%
END
Which safely sets bit 1 while preserving the settings of the other bits.
----------------------------------------------------------------------------
Section 4: Hardware problems.
----------------------------------------------------------------------------
4.1) My hard drive gives me disc errors when I use, what do the error
numbers mean?
The error numbers returned indicate the type of error encountered.
Exactly why slightly more meaningful messages are not returned I am unsure.
The error codes meanings are as follows :-
ST506 error codes
&01 ABT Command abort has been accepted
&02 IVC Invalid command
&03 PER Command parameter error
&04 NIN Head positioning, disc access, or drive check before SPC has
been issued
&05 RTS TST command invalid after SPC
&06 NUS USELD for a selected drive has not been returned
&07 WFL Write fault has been detected on the ST506 interface
&08 NRY Ready signal has been negated
&09 NSC Seek completed (SCP) wasn't returned before a timeout
&0A ISE SEK, or disc access command issued during seek
&0B INC Next cylinder address greater than number of cylinders
&0C ISR Invalid step rate: highest-speed seek specified in normal
seek mode
&0D SKE SEK or disc access command issued to drive with seek error
&0E OVR Data overrun (memory slower than drive)
&0F IPH Head address greater then number of heads
&10 DEE Error Correction Code (ECC) detected an error
&11 DCE CRC error in data area
&12 ECR ECC corrected an error
&13 DFE Fatal ECC error in data area
&14 NHT In CMPD command data mismatched from host and disc
&15 ICE CRC error in ID field (not generated for ST506)
&16 TOV ID not found within timeout
&17 NIA ID area started with an improper address mask
&18 NDA Missing address mark
&19 NWR Drive write protected
IDE errors
- As ST506, except:
&02 IVC Command aborted by controller
&07 WFL Write fault
&08 NRY Drive not ready
&09 NSC Track 0 not found
&13 DFE Uncorrected data error
&16 TOV Sector ID field not found
&17 NIA Bad block mark detected
&18 NDA No data address mark
&20 No DRQ when expected
&21 Drive busy when commanded
&22 Drive busy on command completion
&23 Controller did not respond within timeout
&24 Unknown code in error register
----------------------------------------------------------------------------
4.2) My disc gives me a 'Broken Directory' or my Free Space Map is corrupt,
what can I do?
There are various programs out there now which fix this problem. The PD
ones all are 'caveat emptor' programs but are worth trying if you vitally
need to recover some files, or just don't have the floppy disc/streamer
space to back your drive up.
In the FAQ maintainer's experience the utility 'fsck' (a shareware
utility available at good FTP sites near you) works reliably and well. Even
so it is reccomended that if you have critical data on your drive you should
use something like fsck to recover the data and then reformat the drive.
----------------------------------------------------------------------------
4.3) What does the power on self-test check and how does it signal errors
back to you?
The purple screen at power on indicates that the self-test has begun. A
brief ROM, RAM, VIDC and IOC test is performed and then the screen colour
changes to blue and a full memory test is performed, along with a second
test of the VIDC and IOC. When the screen returns to purple, the machine is
testing for an ARM3. At the end of this sequence the screen colour is set
to green (for pass) or red (for fail). If the tests have all passed then
the machine starts to boot and the RISC OS 3 welcome screen is displayed.
If any test fails, the screen will remain red and the disc drive light
will blink a fault code. A short flash is used to indicate a binary '0' and
a long flash indicates a binary '1'. The bits are grouped into eight
nybbles (blocks of four bits) with the most significant bit first.
The lowest seven bits are a status word. The meaning of each bit is
given below in hex :-
00000001 Self-test due to power on
00000002 Self-test due to interface hardware
00000004 Self-test due to test link
00000008 Long memory test performed
00000010 ARM 3 fitted
00000020 Long memory test disabled
00000040 PC-style IO world detected
Bits 8-31 indicate the fault code and are described below. Not all the
bits are used.
00000200 ROM failed checksum test
00000400 MEMC CAM mapping failed
00000800 MEMC protection failed
00004000 VIDC Virq (video interrupt) timing failed
00008000 VIDC Sirq (sound interrupt) timing failed
00020000 RAM control line failure
00040000 Long RAM test failure
Some third party VIDC enhancers on older hardware trigger the self test to
fail. If you are getting a failed self test with a VIDC enhancer, yet the
machine is working fine, enter and run this BASIC program and then save your
CMOS settings :-
REM Toggle state of power on self test bit in CMOS
REM Read byte
SYS "OS_Byte",161,&BC TO ,,byte%
REM EOR byte with mask for bit 1
byte% = byte% EOR 1<<7
REM Write byte back again
SYS "OS_Byte",162,&BC,byte%
END
This modifies the self test to cope with the VIDC enhancer.
----------------------------------------------------------------------------
4.4) My Real Time Clock has paused, how do I restart it?
This is a problem caused most often by 'rogue' software chatting to the
IIC bus and incorrectly setting the pause bit on the RTC control register.
Symptoms of this happening are that the time is always the same everytime
you reboot and the software clock tends to run slightly slow (losing about a
minute every hour or so.). If you are experiencing these symptoms this
program should restart your RTC clock :-
REM poke RTC control register
REM Bit 0 1
REM 7 Count ResetDivider
REM 6 Count HoldLastCount
REM write 0 for normal operation, write &80 or &40 freezes RTC
DIM cmosdata% 16
!cmosdata%=&00000000
REM write 0 twice to RTC, first 0 is address- control reg
REM second is control reg value 0 is defualt i.e. clock on
SYS &240, &A0, cmosdata%,2
END
You will need to reset the time after running this program but hopefully
your RTC will keep the correct time from here on in.
If the same symptoms persist after trying this program contact your local
Acorn dealer as something more serious has gone wrong. Note that to check
that the symptoms are persisting you *must* reboot your machine after
running this program and having set the time. This is due to the way RISC OS
maintains a 'soft' copy of the real time clock and until you reboot it will
not be obvious whether your RTC has indeed started working again.
----------------------------------------------------------------------------
4.5) Being of a non-humanoid race I don't have hands, only tentacles. Are
there alternatives to the keyboard for data entry into Acorn machines?
Given the preponderance of life-forms with manipulative digits akin to
the opposable thumb system enjoyed by humans other means of data entry are
somewhat scarce on the ground. However it is rumoured that the Vorlons
regularly use Risc PC machines and have solved this technical problem. For
further details please contact :-
Kosh Naranek,
Vorlon Embassy,
Ambassadorial Wing,
Babylon 5,
Tigris Sector.
kosh@spooky.vorlon.gov (Home)
kosh@vorlon.bab-net.mil (Work)
----------------------------------------------------------------------------
Section 5: Software Issues.
----------------------------------------------------------------------------
5.1) When using DOS discs I often find the last parts of files haven't been
written correctly, what am I doing wrong?
Under RISC OS 3 DOS, and indeed with any other ImageFS filing system,
discs are treated as one large file and ADFS applies write-behind caching to
nearly everything it does. (See the question on ADFSBuffers for more details
about this.) This means while working on a DOS disc the entire disc is
treated as one large open file.
However as long as a file is held open the cache is not flushed out fully
till the machine is explicitly told to do so. This means when working with
non-ADFS format discs *always* dismount them before removing them from the
drive. With ADFS format discs this is not so critical, as files aren't held
open during most operations on them, but it is good to get into the habit of
dismounting floppy discs.
----------------------------------------------------------------------------
5.2) I have obtained [PD] program X but find it needs [version Y.YY of]
module Z, which I don't have. Where can I get it?
All patch modules, official Acorn OS extensions and the like can be
sourced from the Acorn ftp site. Ideally your dealer will also have copies
of them too and you should be able to obtain them from them. (If they don't
you may like to pass on the ones from the ftp site, if you request them, so
that they are up to-date.)
----------------------------------------------------------------------------
5.3) What is the current File-type allocation ranges and why won't Acorn
provide a full file-type list?
Acorn have reallocated the File-type ranges for applications. The new
ranges are :-
Non-user area
&E00-&FFF Acorn
&B00-&DFF Commercial software
&A00-&AFF Acornsoft, and other commercial software
&400-&9FF Commercial Software
User area
&100-&3FF Non-commercial distributed software (ie PD)
&000-&0FF User's personal usage (ie non-distributed)
75% of the user area is for PD/Shareware, with allocations co-ordinated by
Acorn. If your software is going to be distributed, you should have an
allocated filetype to avoid clashes.
Acorn cannot publish it's master list of filetypes because, at any given
time, it will contain allocations made for products which have not yet been
announced. Therefore, Acorn would be in breach of confidence by doing so -
and the editing overhead for producing a sanitised list is too great.
----------------------------------------------------------------------------
5.4) Is there a Modula 2 compiler for the Arc?
Currently, no. Acorn did have, in the early days of the experimental ARM
work, an in house compiler. However this compiler was sufficiently unstable
and buggy to be unreleasable as commercial product and was only used because
in house support was available immediately to the users of the compiler.
When Olivetti invested in Acorn this technology went to them so that Acorn
no longer have even an in house Modula 2 compiler.
However some companies have stated intentions to produce Modula 2
compilers for the Arc. Whether these intentions become reality has yet to be
seen.
----------------------------------------------------------------------------
5.5) What version of module X can I assume that all users have?
Currently the version numbers are :-
Clib v3.75
Colours v0.52
FPEmulator v2.80
IRQUtils v0.12
Hourglass v2.02
Sound v1.13
WimpUtils v0.04
All of these modules are only needed if you intend running your
applications on RISC OS 2 machines. The functionality of all these module
versions have been incorporated into ROM under RISC OS 3.
----------------------------------------------------------------------------
5.6) What's the minimum version of module X that my program needs? What
features were introduced/what bugs were fixed in which versions?
These details will come with the release notes accompanying the module
and the particular program, if properly done, will inform you of which
versions of the module you need as required.
----------------------------------------------------------------------------
5.7) What Public Domain Languages are available for Acorn machines?
The answer to this is a list that is maintained by Gavin Wraith <G.Wraith@sussex.ac.uk>. Accordingly updates, corrections and other comments should all be sent to him.
******** PD Languages for Risc OS ***********
Version 3.
Updates: Ada, GCC
New: Perl
On the usenet group comp.compilers there is regularly posted an
archive of PD compilers and interpreters (about 373K's worth of
information) by D.Sharnoff and A.Robenalt. Enquiries to
compilers-request@iecc.com .
Here is an incomplete list of PD programming languages available
for Risc OS machines, with brief comments (no flames please).
If you think I have omitted a significant item, I will be grateful
to hear about it. My thanks to Kevin Quinn and Simon Callan for
the latest updates.
Most items be obtained by anonymous ftp from
micros.hensa.ac.uk:micros/arch/riscos/<dirname>
where <dirname> is as specified below.
Imperative languages
--------------------
Charm - A Pascal like compiled language. Not portable.
Available from some PD mail order dealers, I think.
Personal opinion: sweet but limited.
PC - Pascal. <dirname> = a/a122.
Personal opinion: No experience of it. I find Pascal
over-didactic and clumsy.
Icon - Griswold, 1970's. A descendant of SNOBOL4 with Pascal-like
syntax. Icon is a general-purpose language with special features
for string scanning.
"The Icon Programming Language", Ralph & Marge Griswold,
2nd ed P-H 1990.
ftp://cs.arizona.edu list: icon-group@arizona.edu
<dirname> = a/a106
Personal opinion: A rolling stone from the past.
GRS <dirname> = b/b062
Personal opinion: I could not get it to work.
Ada <dirname> = c/c052.
Kevin Quinn writes:
This is a port of Ada/Ed, which is an Ada'83 implementation
that compiles to an intermediate code which is interpreted.
Useful to try all that Ada out when commercial compilers cost
on the order of 10K and the GNU Ada9X (GNAT) is still incomplete.
Not really for developing WIMP applications :-) Ada is used
extensively in the military embedded market (where its use is
mandated) and more recently in a flood of air-traffic control
systems. Popular with relatively high integrity systems.
Ada is a much bigger language than C/Pascal etc - packages,
tasks, run-time range checks and very strong type constraints
are the main features. Lacking a couple of bits and bobs for
effective object-oriented programming, although most Ada software
is object-based. Ada9X brings in all the object oriented
stuff (run-time polymorphism and the like).
GCC <dirname> = b/b013. GNU C and C++. Portable. Based on GCC 2.4.5.
Release 2.2.
Personal opinion: Not for beginners or those with limited RAM.
Its availability is a very significant
development, especially as the rise of
Linux enhances the importance of GNU
software.
Armbob 2.0 <dirname> = b/b178. Not portable. C-like, object oriented
language. Supports wimp programming. Implicit typing.
Compiles to intermediate code for a virtual stack machine
which is then run.
Personal opinion: Just the ticket for beginners who want
something more flexible than but as easy as Basic.
Perl <dirname> = a/a049. Kevin Quinn writes:
Combines the best features of Awk, Grep, Sed and C to make a
great language for text processing. Martin Portman has
written a newsreader for the Arc with it
(martin@tumble.demon.co.uk).
SMALLTALKS
----------
LITTLEST <dirname> = a/a102 David G.Jones writes:
Little Smalltalk By Tim Budd, latest version 3.14.
This follows a mix of Smalltalk-80 and its predecessor -76.
Designed more for the casual/child user, reflecting
the original idea of the project. Contains a reduced
and more straightforward view. Slow but does not require
too much memory.
GNUST <dirname> = c/c045 GNU Smalltalk 1.1.1.
David G.Jones writes:
This is an attempt to implement the core of the
Smalltalk-80 definition. Quite demanding in terms
of memory and CPU speed. Quite a few bugs. Lacks
the charm of ST-80 without the window environment.
FORTH variations
----------------
Personal opinion: Some people go wild over Forth. Look at all the
articles on it in old magazines. It is not for beginners, and it
misses out on all the developments of the last 20 years. Fascinating
for implementors, a pain in the stack for users.
Forthmacs <dirname> = c/c073
AForth <dirname> = a/a293
TileForth <dirname> = a/a111
Written in C for portability.
Almost as weird as Forth is J (son of APL)
J <dirname> = a/a165
Personal opinion: Dijkstra got the size of it when he said
that APL was a language developed to perfection - in the
wrong direction. IBM once adopted APL - can one be ruder?
Declarative Languages
---------------------
SB-Prolog <dirname> = a/a067
Personal opinion: I find relations a lot clumsier than
functions.
Hope <dirname> = a/a139 Eager evaluation, but lists can have
lazy tails.
Personal opinion: I believe this started out as a project
at Imperial College, but the code (in
Pascal) was so awful that they disowned it.
I found it a bit flaky. Hope has been
superseded by later languages.
SML <dirname> = a/a216 Eager evaluation. No modules.
Personal opinion: Fairly basic core language, using a bytecode
interpreter. Good choice for a beginner armed
with a good text book (e.g. Wikstroem).
Poor interface to low level.
Gofer <dirname> = a/a262 Lazy evaluation. Type classes.
The latest version has type-constructor
classes, and is the only language to
support this concept. (I can supply a
version that runs in a window).
Personal opinion: This language represents the very latest in
ideas about types, and it is sweet to use,
too. The low level interface is poor, so it
is hardly the language for exploiting the
machine, but for teaching or for symbolic
manipulation it is wonderful.
Lisp Family
-----------
Personal opinion: These packages tend to be unsuitable for beginners
by reason of lack of good documentation or useful
low-level interface, though there are plenty of books
to cover non-machine-specific aspects. Lisp, or at
least, Scheme is potentially a winner for beginners
because it is simple, powerful and there are lots of
good text books. It has been an educational tool in
the USA for years. GNU is going to adopt it as a
scripting language. Down side is -
no types, too many brackets, missed out on recent
developments in programming language design.
I have had some experience with EdScheme (not PD)
which I found excellent. I have not had sufficient
experience with the others to comment. Maybe readers
out there can help?
Xlisp <dirname> = a/a103
XScheme <dirname> = a/a138
Siod <dirname> = a/a275
Xlisp+ <dirname> = b/b076
GNU Scheme <dirname> = b/b105
symbolic maths, graphics
Foolslisp <dirname> = c/c162
----------------------------------------------------------------------------
Section 6: Viruses.
----------------------------------------------------------------------------
6.1) How can I protect against viruses?
Pineapple Software have produced a program called !Killer, which is the
definitive means of checking for or killing viruses. See the next question.
There are also a few PD programs around, but these tend to detect only a
small subset of the viruses in circulation. !VKiller used to be OK, but it
is no longer maintained, is now seriously out of date and fails to work
under RISC OS 3. Out of the PD virus utilities the current best is Tor
Houghton's Scanner. This detects most known viruses and removes quite a few
as well and serves as a good secondary defence if Killer is unavailable to
you. Scanner should be available on various FTP/Email servers.
----------------------------------------------------------------------------
6.2) Where can I obtain !Killer?
It is now a commercial product and will be distributed by Pineapple
Software. Who can be reached at:-
39 Brownlea Gardens, Seven Kings, Ilford, ESSEX IG3 9NL
Tel. +44 (81) 599 1476 Fax +44 (81) 598 2343
via email :-
sales@pinesoft.demon.co.uk
support@pinesoft.demon.co.uk
Early versions (up to 1.26) are PD, but should not be used now as they are
ineffective against the new crop of viruses that have subsequently appeared
since it's release.
----------------------------------------------------------------------------
Section 7: Net Resources.
----------------------------------------------------------------------------
7.1) What archives/FTP sites are available?
See the regular (fortnightly) posting by Gerben Vos. This posting is also
available from an email server at MIT.
To request it from this server send an email to mail-server@rtfm.mit.edu. No
subject is needed and the body should contain :-
send /pub/usenet/news.answers/acorn/archives
----------------------------------------------------------------------------
7.2) What Acorn related companies are available on the net via email?
There are quite a few companies now on the net and reachable via email
with more joining as time passes. Here is the list of companies that have
given permission to be entered here in the FAQ. If the email address is to a
person rather than either an automated system or perhaps a group of people I
have placed the name of the person in brackets after the email address
description.
Acorn Computers (Uk) :-
customer.services@acorn.co.uk Enquiries and product information.
RiscPC.techquery@acorn.co.uk RiscPC information.
Aleph One :-
Sales@aleph1.co.uk Information about products and prices.
Support@aleph1.co.uk After-sales support.
Armstrong Walker Ltd :-
Andy@armswalk.demon.co.uk Enquiries etc... (Andy Armstrong)
Nigel@armswalk.demon.co.uk Enquiries etc... (Nigel Walker)
Atomwide :-
Sales@atomwide.co.uk Information about products and prices.
Support@atomwide.co.uk After-sales support.
Clares Micro Supplies :-
DClare@Clares.demon.co.uk General enquiries. (Dave Clare)
GOwen@Clares.demon.co.uk General enquiries. (Gareth Owen)
DJackson@Clares.demon.co.uk Technical enquiries. (David Jackson)
Sales@Clares.demon.co.uk Ordering and sales information.
Colton Software :-
info@colton.co.uk Automated reply, listing services available.
sales@colton.co.uk general sales etc.
support@colton.co.uk technical support on existing products.
Computer Concepts :-
info@cconcepts.co.uk Automated reply, giving information.
sales@cconcepts.co.uk For credit card orders of products.
support@cconcepts.co.uk Technical support for products.
Comspec :-
acorn_info@comrad.comspec.com Canadian Acorn dealer. Enquiries about
Acorn hardware and products welcome
including USA enquiries. (Domenic
DeFrancesco)
David Pilling Software :-
david@pilling.demon.co.uk All enquiries to this address.
DoggySoft :-
sales@doggysft.demon.co.uk Sales enquiries.
support@doggysft.demon.co.uk Support for DoggySoft products.
wxiibeta@doggysft.demo.co.uk Requests for WimpExt II beta testers.
I-Cubed Ltd :-
advice@i-cubed.demon.co.uk Pre sales advice / general queries
support@i-cubed.demon.co.uk After sales support / technical queries
sales@i-cubed.demon.co.uk Pricing / Availability / Dealers etc.
Iota Software :-
support@iota.co.uk Enquires & support for Iota products.
Learning Curve Software Systems :-
banks_p@kosmos.wcc.govt.nz Enquiries & technical support.
(Philip R. Banks)
howard_s@kosmos.wcc.govt.nz Enquiries. (Steve Howard)
wright_j@kosmos.wcc.govt.nz Enquiries & technical support.
(Julian Wright)
Machine Love :-
csyss1@scs.leeds.ac.uk Enquries etc... (Shane Suebsahakarn)
Oregan Software Developments :-
sales@oregan.demon.co.uk General enquiries, product info and credit
card
orders
support@oregan.demon.co.uk Technical queries
PEP Associates :-
info@pep-assoc.co.uk Product information.
support@pep-assoc.co.uk Product support.
SENLAC Computing :-
sykesp@senlac.demon.co.uk Enquiries etc. (Peter R. Sykes)
The Serial Port :-
altman@cryton.demon.co.uk Software support.
bob@cryton.demon.co.uk Retail enquiries.
jim@cryton.demon.co.uk To reach Jim Nagel, author of the Acorn
column in Computer Shopper magazine.
pcats@cryton.demon.co.uk Hardware support
Sherston Software :-
sales@sherston.co.uk Sales and Product information.
support@sherston.co.uk Technical support/queries etc.
Spacetech Imaging Technology
details@spacetec.demon.co.uk Automated product list server. (Send it a
blank message to receive product details.)
pdesk@spacetec.demon.co.uk Mailing list about Photodesk. (Send it a
blank message to join the mailing list.)
sales@spacetec.demon.co.uk Sales and Product information.
support@spacetec.demon.co.uk Technical Support.
Uniqueway :-
info@uniqway.demon.co.uk General queries, product related or
otherwise.
support@uniqway.demon.co.uk Support for products. (Serial
number should be quoted where
relevant.)
sales@uniqway.demon.co.uk For credit card orders.
Warm Silence Software :-
Robin.Watts@prg.ox.ac.uk Enquiries etc. (Robin Watts)
Wyddfa Software
gwilliams@cix.compulink.co.uk Enquiries etc. (Gwyn Williams)
If you are a company and you would like to included in this list please send
me an email, to the address specified at the bottom of the FAQ, detailing
the email addresses and their general function. I will then include them
into the FAQ.
----------------------------------------------------------------------------
7.3) Why have there been no postings to comp.{binaries,sources}.acorn
recently?
Submissions are on the low side these days, accordingly little is
posted. If you would like to submit something either post directly to the
group (and your News software will email it to the appropriate place) OR,
preferrably, email it to poor@esu6.auckland.ac.nz with a covering
description of what the software does.
----------------------------------------------------------------------------
7.4) How to retreive the FAQ from the source... { Or how to use my email
server. }
As I frequently update the FAQ between postings you may wish to get the
latest and most up-todate copy of the FAQ before it next gets posted. To
allow you to do this, and to reduce the size of the FAQ itself, I maintain
an email server on my personal machine for people to use. Due to the various
complications at my end, and a distincct desire to minimise email charges
incurred to myself, the email server shares my email address with me.
To use the server send an email message looking something like this :-
To: banks_p@kosmos.wcc.govt.nz
Subject: ServerMail
---message text begins---
Help:
In this case it will send a help file to you detailing how to use the
server. Be aware that the spelling and case of the subject line is *very*
important. My software searches for email with exactly this subject line
automatically once a day and it is case & spelling sensitive. Failure to
type this correctly will result in your message appearing in my normal email
list and depending on my mood may, or may not, be adjusted to reach the
email server.
The server understands and uses Reply-To: headers but has distinct
problems sending material to bang path addressed sites. (Well to be more
accurate it has problems sending to any site that has an ! in the email
address.) If you are using a site with such addressing then I am afraid the
email server will be unable to help you. Also please ensure that your From:
header, or your Reply-To: header if you using that, is valid. Email file
requests that bounce due to this tend to annoy me and repeat offenders will
be placed on the server's 'to be ignored' list.
As well as the FAQ and it's related files I store a small collection of
technical documents, 'special' data files and other generally useful data on
the server. To obtain a listing of all the sections available to you, and
the contents of those sections, send a message as detailed above but instead
of help put :-
Send: index
in the body of the message.
Please be aware that this server is at the tail end of a 2400 baud link
so while you are most welcome to use it I must ask that you try to source
any files from other sites before using this server and to strictly follow
the guidelines outlined above.
----------------------------------------------------------------------------
7.5) What WWW pages are out there for Acorn topics?
Web pages are popping up all over the place these days, especially now
that Web client software exists for Acorn machines. This list of Web pages
is checked periodicly by myself for validity but I make no claims that URL's
present here are currently valid. A more comphrensive list is contained in
the fortnightly FTP servers list maintained by Gerben Vos.
<http://www.geko.com.au/users/riscman/index.html>
Australian Acorn Web site. Still growing [read: under development]
<http://www.csv.warwick.ac.uk/~phudv>
"The Complete Acorn WWW page" - contains pointers to other Acorn Web
pages.
<http://www.stir.ac.uk/~rhh01/Main.html>
"Acorn On The Net" list page - contains pointers to other Acorn Web
pages.
<http://www.csc.liv.ac.uk/users/u1smt/u1smt.html>
"The Jungle" Simon Truss's web page containing pointers to a variety of
other web pages.
----------------------------------------------------------------------------
Thanks go to all the people who have contributed corrections and
additions to the list. Without this help this list would be a hell of alot
buggier (spot the programmer... :-) ) than it is...
----------------------------------------------------------------------------
All additions, corrections & suggestions for the FAQ List should be sent to
-=> banks_p@kosmos.wcc.govt.nz <=-
Being the maintainer of this FAQ I reserve the right to be wrong, incorrect,
slow, out of date and generally how I please with the FAQ List.
00000000 20 20 20 43 6f 6d 70 2e 53 79 73 2e 41 63 6f 72 | Comp.Sys.Acor|
00000010 6e 20 46 41 51 20 4c 69 73 74 2e 20 4c 61 73 74 |n FAQ List. Last|
00000020 20 61 6c 74 65 72 61 74 69 6f 6e 73 20 34 2f 4a | alterations 4/J|
00000030 61 6e 2f 31 39 39 34 0a 20 20 20 3d 3d 3d 3d 3d |an/1994. =====|
00000040 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d |================|
*
00000070 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |..--------------|
00000080 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
000000b0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 52 |--------------.R|
000000c0 65 63 65 6e 74 20 61 6c 74 65 72 61 74 69 6f 6e |ecent alteration|
000000d0 73 20 3a 2d 0a 20 20 20 51 75 65 73 74 69 6f 6e |s :-. Question|
000000e0 20 35 2e 37 20 61 6d 6d 65 6e 64 65 64 2e 0a 2d | 5.7 ammended..-|
000000f0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000130 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 20 20 20 |-----------.. |
00000140 43 6f 6e 74 61 69 6e 65 64 20 62 65 6c 6f 77 20 |Contained below |
00000150 69 73 20 61 20 6c 69 73 74 20 6f 66 20 74 68 65 |is a list of the|
00000160 20 6d 6f 73 74 20 63 6f 6d 6d 6f 6e 6c 79 20 61 | most commonly a|
00000170 73 6b 65 64 20 71 75 65 73 74 69 6f 6e 73 20 61 |sked questions a|
00000180 62 6f 75 74 0a 41 63 6f 72 6e 20 6d 61 63 68 69 |bout.Acorn machi|
00000190 6e 65 73 20 69 6e 20 63 6f 6d 70 2e 73 79 73 2e |nes in comp.sys.|
000001a0 61 63 6f 72 6e 2e 20 42 65 66 6f 72 65 20 70 6f |acorn. Before po|
000001b0 73 74 69 6e 67 20 74 6f 20 63 6f 6d 70 2e 73 79 |sting to comp.sy|
000001c0 73 2e 61 63 6f 72 6e 2c 20 69 66 20 79 6f 75 0a |s.acorn, if you.|
000001d0 61 72 65 20 6e 65 77 20 74 6f 20 74 68 65 20 67 |are new to the g|
000001e0 72 6f 75 70 2c 20 63 68 65 63 6b 20 74 6f 20 73 |roup, check to s|
000001f0 65 65 20 69 66 20 79 6f 75 72 20 71 75 65 73 74 |ee if your quest|
00000200 69 6f 6e 28 73 29 20 61 72 65 20 61 6c 72 65 61 |ion(s) are alrea|
00000210 64 79 20 61 6e 73 77 65 72 65 64 0a 62 65 6c 6f |dy answered.belo|
00000220 77 2e 20 43 6f 72 72 65 63 74 69 6f 6e 73 20 61 |w. Corrections a|
00000230 6e 64 2f 6f 72 20 61 64 64 69 74 69 6f 6e 73 20 |nd/or additions |
00000240 74 6f 20 74 68 65 20 6c 69 73 74 20 63 61 6e 20 |to the list can |
00000250 62 65 20 65 6d 61 69 6c 65 64 20 74 6f 20 3a 2d |be emailed to :-|
00000260 0a 0a 62 61 6e 6b 73 5f 70 40 6b 6f 73 6d 6f 73 |..banks_p@kosmos|
00000270 2e 77 63 63 2e 67 6f 76 74 2e 6e 7a 0a 0a 41 6e |.wcc.govt.nz..An|
00000280 64 20 49 27 6c 6c 20 74 72 79 20 74 6f 20 61 64 |d I'll try to ad|
00000290 64 20 74 68 65 6d 20 61 73 20 73 6f 6f 6e 20 61 |d them as soon a|
000002a0 73 20 70 6f 73 73 69 62 6c 65 2e 2e 2e 2e 0a 0a |s possible......|
000002b0 20 20 20 54 68 69 73 20 46 41 51 20 69 73 20 70 | This FAQ is p|
000002c0 6f 73 74 65 64 20 62 69 2d 77 65 65 6b 6c 79 20 |osted bi-weekly |
000002d0 74 6f 20 63 6f 6d 70 2e 73 79 73 2e 61 63 6f 72 |to comp.sys.acor|
000002e0 6e 2c 20 63 6f 6d 70 2e 73 79 73 2e 61 63 6f 72 |n, comp.sys.acor|
000002f0 6e 2e 61 6e 6e 6f 75 6e 63 65 0a 61 6e 64 20 6e |n.announce.and n|
00000300 65 77 73 2e 61 6e 73 77 65 72 73 2e 20 54 68 65 |ews.answers. The|
00000310 20 70 6f 73 74 65 64 20 73 65 63 74 69 6f 6e 73 | posted sections|
00000320 20 6f 66 20 74 68 65 20 46 41 51 20 69 73 20 61 | of the FAQ is a|
00000330 76 61 69 6c 61 62 6c 65 20 66 72 6f 6d 20 61 6e |vailable from an|
00000340 20 65 6d 61 69 6c 0a 73 65 72 76 65 72 20 61 74 | email.server at|
00000350 20 4d 49 54 2e 20 54 6f 20 72 65 71 75 65 73 74 | MIT. To request|
00000360 20 74 68 65 20 46 41 51 20 66 72 6f 6d 20 74 68 | the FAQ from th|
00000370 69 73 20 73 65 72 76 65 72 20 73 65 6e 64 20 61 |is server send a|
00000380 6e 20 65 6d 61 69 6c 20 74 6f 0a 6d 61 69 6c 2d |n email to.mail-|
00000390 73 65 72 76 65 72 40 72 74 66 6d 2e 6d 69 74 2e |server@rtfm.mit.|
000003a0 65 64 75 2e 20 4e 6f 20 73 75 62 6a 65 63 74 20 |edu. No subject |
000003b0 69 73 20 6e 65 65 64 65 64 20 61 6e 64 20 74 68 |is needed and th|
000003c0 65 20 62 6f 64 79 20 73 68 6f 75 6c 64 20 62 65 |e body should be|
000003d0 20 3a 2d 0a 0a 73 65 6e 64 20 2f 70 75 62 2f 75 | :-..send /pub/u|
000003e0 73 65 6e 65 74 2f 6e 65 77 73 2e 61 6e 73 77 65 |senet/news.answe|
000003f0 72 73 2f 61 63 6f 72 6e 2f 66 61 71 0a 0a 20 20 |rs/acorn/faq.. |
00000400 20 41 6c 73 6f 20 74 68 65 20 46 41 51 20 69 74 | Also the FAQ it|
00000410 73 65 6c 66 20 61 6e 64 20 73 75 62 2d 73 65 63 |self and sub-sec|
00000420 74 69 6f 6e 73 20 6f 66 20 69 74 20 61 72 65 20 |tions of it are |
00000430 73 74 6f 72 65 64 20 69 6e 20 61 6e 20 65 6d 61 |stored in an ema|
00000440 69 6c 20 73 65 72 76 65 72 0a 49 20 70 65 72 73 |il server.I pers|
00000450 6f 6e 61 6c 6c 79 20 72 75 6e 2e 20 53 65 65 20 |onally run. See |
00000460 73 65 63 74 69 6f 6e 20 37 2e 34 20 66 6f 72 20 |section 7.4 for |
00000470 66 75 72 74 68 65 72 20 64 65 74 61 69 6c 73 20 |further details |
00000480 6f 6e 20 68 6f 77 20 74 6f 20 61 63 63 65 73 73 |on how to access|
00000490 20 74 68 69 73 0a 65 6d 61 69 6c 20 73 65 72 76 | this.email serv|
000004a0 65 72 2e 0a 0a 20 20 20 4c 61 73 74 6c 79 20 74 |er... Lastly t|
000004b0 68 69 73 20 6c 69 73 74 20 69 73 20 63 6f 70 79 |his list is copy|
000004c0 72 69 67 68 74 20 74 6f 20 50 68 69 6c 69 70 20 |right to Philip |
000004d0 52 2e 20 42 61 6e 6b 73 20 62 75 74 20 70 65 72 |R. Banks but per|
000004e0 6d 69 73 73 69 6f 6e 20 69 73 0a 67 72 61 6e 74 |mission is.grant|
000004f0 65 64 20 66 6f 72 20 66 72 65 65 20 64 69 73 74 |ed for free dist|
00000500 72 69 62 75 74 69 6f 6e 20 6f 66 20 74 68 65 20 |ribution of the |
00000510 65 6e 74 69 72 65 20 6c 69 73 74 20 6f 72 20 71 |entire list or q|
00000520 75 6f 74 65 64 20 73 65 67 6d 65 6e 74 73 20 6f |uoted segments o|
00000530 66 20 69 74 2e 0a 49 66 20 79 6f 75 20 77 69 73 |f it..If you wis|
00000540 68 20 74 6f 20 69 6e 63 6c 75 64 65 20 73 65 67 |h to include seg|
00000550 6d 65 6e 74 73 20 6f 66 20 74 68 65 20 6c 69 73 |ments of the lis|
00000560 74 20 69 6e 74 6f 20 6f 74 68 65 72 20 64 6f 63 |t into other doc|
00000570 75 6d 65 6e 74 73 20 74 68 65 6e 20 70 72 6f 70 |uments then prop|
00000580 65 72 0a 61 74 74 72 69 62 75 74 69 6f 6e 20 6d |er.attribution m|
00000590 75 73 74 20 62 65 20 70 65 72 66 6f 72 6d 65 64 |ust be performed|
000005a0 20 61 6e 64 20 69 66 20 79 6f 75 20 77 69 73 68 | and if you wish|
000005b0 20 74 6f 20 69 6e 63 6c 75 64 65 20 61 6e 64 20 | to include and |
000005c0 70 61 72 74 20 6f 66 20 74 68 65 0a 6c 69 73 74 |part of the.list|
000005d0 2c 20 6f 72 20 74 68 65 20 6c 69 73 74 20 69 6e |, or the list in|
000005e0 20 66 75 6c 6c 2c 20 69 6e 20 61 6e 79 20 63 6f | full, in any co|
000005f0 6d 6d 65 72 63 69 61 6c 20 70 72 6f 64 75 63 74 |mmercial product|
00000600 20 74 68 65 6e 20 65 78 70 72 65 73 73 20 70 65 | then express pe|
00000610 72 6d 69 73 73 69 6f 6e 0a 6d 75 73 74 20 62 65 |rmission.must be|
00000620 20 6f 62 74 61 69 6e 65 64 20 66 72 6f 6d 20 6d | obtained from m|
00000630 79 73 65 6c 66 2e 0a 0a 49 6e 64 65 78 20 6f 66 |yself...Index of|
00000640 20 51 75 65 73 74 69 6f 6e 73 2e 0a 3d 3d 3d 3d | Questions..====|
00000650 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 0a |===============.|
00000660 0a 20 20 20 54 68 65 20 71 75 65 73 74 69 6f 6e |. The question|
00000670 73 20 68 61 76 65 20 62 65 65 6e 20 63 61 74 61 |s have been cata|
00000680 67 6f 72 69 73 65 64 20 6c 6f 6f 73 65 6c 79 20 |gorised loosely |
00000690 69 6e 74 6f 20 72 65 6c 61 74 65 64 20 73 65 63 |into related sec|
000006a0 74 69 6f 6e 73 2c 20 69 6e 20 61 6e 0a 65 66 66 |tions, in an.eff|
000006b0 6f 72 74 20 74 6f 20 6d 61 6b 65 20 66 69 6e 64 |ort to make find|
000006c0 69 6e 67 20 74 68 65 20 64 65 73 69 72 65 64 20 |ing the desired |
000006d0 69 6e 66 6f 72 6d 61 74 69 6f 6e 20 73 69 6d 70 |information simp|
000006e0 6c 65 72 20 61 6e 64 20 71 75 69 63 6b 65 72 2e |ler and quicker.|
000006f0 0a 0a 53 65 63 74 69 6f 6e 20 31 3a 20 41 63 6f |..Section 1: Aco|
00000700 72 6e 20 48 61 72 64 77 61 72 65 20 61 6e 64 20 |rn Hardware and |
00000710 4f 70 65 72 61 74 69 6e 67 20 53 79 73 74 65 6d |Operating System|
00000720 73 2e 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |s..-------------|
00000730 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000750 2d 2d 2d 0a 0a 31 2e 31 29 20 57 68 61 74 20 6b |---..1.1) What k|
00000760 69 6e 64 20 6f 66 20 41 63 6f 72 6e 20 6d 61 63 |ind of Acorn mac|
00000770 68 69 6e 65 73 20 61 72 65 20 74 68 65 72 65 3f |hines are there?|
00000780 0a 31 2e 32 29 20 57 68 61 74 20 76 65 72 73 69 |.1.2) What versi|
00000790 6f 6e 73 20 6f 66 20 74 68 65 20 70 72 6f 63 65 |ons of the proce|
000007a0 73 73 6f 72 20 61 72 65 20 74 68 65 72 65 20 61 |ssor are there a|
000007b0 6e 64 20 77 68 61 74 20 61 72 65 20 74 68 65 69 |nd what are thei|
000007c0 72 0a 20 20 20 20 20 63 61 70 61 62 69 6c 69 74 |r. capabilit|
000007d0 69 65 73 3f 0a 31 2e 33 29 20 57 68 61 74 20 61 |ies?.1.3) What a|
000007e0 72 65 20 74 68 65 20 6d 61 69 6e 20 6e 65 77 20 |re the main new |
000007f0 66 65 61 74 75 72 65 73 20 6f 66 20 52 49 53 43 |features of RISC|
00000800 20 4f 53 20 33 3f 0a 31 2e 34 29 20 57 68 61 74 | OS 3?.1.4) What|
00000810 20 61 72 65 20 74 68 65 20 64 69 66 66 65 72 65 | are the differe|
00000820 6e 63 65 73 20 62 65 74 77 65 65 6e 20 52 49 53 |nces between RIS|
00000830 43 20 4f 53 20 33 2e 35 20 61 6e 64 20 52 49 53 |C OS 3.5 and RIS|
00000840 43 20 4f 53 20 33 2e 31 31 20 26 20 33 2e 31 30 |C OS 3.11 & 3.10|
00000850 3f 0a 31 2e 35 29 20 48 6f 77 20 63 6f 6d 70 61 |?.1.5) How compa|
00000860 74 69 62 6c 65 20 77 69 74 68 20 6f 74 68 65 72 |tible with other|
00000870 20 73 79 73 74 65 6d 73 20 69 73 20 61 6e 20 41 | systems is an A|
00000880 63 6f 72 6e 20 6d 61 63 68 69 6e 65 3f 0a 31 2e |corn machine?.1.|
00000890 36 29 20 57 68 61 74 20 61 72 65 20 74 68 65 20 |6) What are the |
000008a0 67 72 61 70 68 69 63 73 20 63 61 70 61 62 69 6c |graphics capabil|
000008b0 69 74 69 65 73 20 6f 66 20 74 68 65 20 41 63 6f |ities of the Aco|
000008c0 72 6e 20 6d 61 63 68 69 6e 65 73 3f 0a 31 2e 37 |rn machines?.1.7|
000008d0 29 20 49 73 20 56 69 72 74 75 61 6c 20 4d 65 6d |) Is Virtual Mem|
000008e0 6f 72 79 20 70 6f 73 73 69 62 6c 65 20 75 6e 64 |ory possible und|
000008f0 65 72 20 52 49 53 43 20 4f 53 3f 0a 0a 53 65 63 |er RISC OS?..Sec|
00000900 74 69 6f 6e 20 32 3a 20 55 70 67 72 61 64 65 73 |tion 2: Upgrades|
00000910 20 61 6e 64 20 45 78 70 61 6e 73 69 6f 6e 2e 0a | and Expansion..|
00000920 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000940 2d 2d 0a 0a 32 2e 31 29 20 57 68 61 74 20 61 72 |--..2.1) What ar|
00000950 65 20 74 68 65 20 6d 65 6d 6f 72 79 20 6c 69 6d |e the memory lim|
00000960 69 74 73 20 6f 66 20 74 68 65 20 76 61 72 69 6f |its of the vario|
00000970 75 73 20 41 63 6f 72 6e 20 6d 61 63 68 69 6e 65 |us Acorn machine|
00000980 73 3f 0a 32 2e 32 29 20 57 68 61 74 20 69 73 20 |s?.2.2) What is |
00000990 61 20 73 65 63 6f 6e 64 20 70 72 6f 63 65 73 73 |a second process|
000009a0 6f 72 20 61 6e 64 20 77 68 61 74 20 73 65 63 6f |or and what seco|
000009b0 6e 64 20 70 72 6f 63 65 73 73 6f 72 73 20 61 72 |nd processors ar|
000009c0 65 20 74 68 65 72 65 3f 0a 32 2e 33 29 20 43 61 |e there?.2.3) Ca|
000009d0 6e 20 50 43 20 56 47 41 20 4d 6f 6e 69 74 6f 72 |n PC VGA Monitor|
000009e0 73 20 62 65 20 61 64 64 65 64 20 74 6f 20 61 6e |s be added to an|
000009f0 20 41 63 6f 72 6e 20 6d 61 63 68 69 6e 65 3f 0a | Acorn machine?.|
00000a00 32 2e 34 29 20 41 72 65 20 74 68 65 72 65 20 61 |2.4) Are there a|
00000a10 6e 79 20 63 61 72 64 73 20 66 6f 72 20 49 42 4d |ny cards for IBM|
00000a20 20 50 43 20 6f 72 20 63 6f 6d 70 61 74 69 62 6c | PC or compatibl|
00000a30 65 20 6d 61 63 68 69 6e 65 73 20 74 68 61 74 20 |e machines that |
00000a40 41 63 6f 72 6e 20 68 61 76 65 0a 20 20 20 20 20 |Acorn have. |
00000a50 70 72 6f 64 75 63 65 64 3f 0a 32 2e 35 29 20 57 |produced?.2.5) W|
00000a60 68 61 74 20 69 73 20 61 20 56 49 44 43 20 65 6e |hat is a VIDC en|
00000a70 68 61 6e 63 65 72 3f 20 57 69 6c 6c 20 49 20 6e |hancer? Will I n|
00000a80 65 65 64 20 6f 6e 65 20 66 6f 72 20 6d 79 20 6e |eed one for my n|
00000a90 65 77 20 6d 75 6c 74 69 73 79 6e 63 20 6d 6f 6e |ew multisync mon|
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00000ac0 20 73 65 72 69 61 6c 20 63 61 62 6c 65 20 73 68 | serial cable sh|
00000ad0 6f 75 6c 64 20 49 20 75 73 65 20 6f 6e 20 6d 79 |ould I use on my|
00000ae0 20 6d 61 63 68 69 6e 65 20 66 6f 72 20 6d 6f 64 | machine for mod|
00000af0 65 6d 0a 20 20 20 20 20 77 6f 72 6b 3f 0a 32 2e |em. work?.2.|
00000b00 37 29 20 48 6f 77 20 63 61 6e 20 49 20 67 65 74 |7) How can I get|
00000b10 20 75 6e 66 69 6c 74 65 72 65 64 20 73 6f 75 6e | unfiltered soun|
00000b20 64 20 66 72 6f 6d 20 61 6e 20 41 63 6f 72 6e 20 |d from an Acorn |
00000b30 6d 61 63 68 69 6e 65 3f 0a 32 2e 38 29 20 43 61 |machine?.2.8) Ca|
00000b40 6e 20 49 20 63 6f 6e 6e 65 63 74 20 61 20 53 43 |n I connect a SC|
00000b50 41 52 54 20 6d 6f 6e 69 74 6f 72 20 74 6f 20 6d |ART monitor to m|
00000b60 79 20 41 63 6f 72 6e 20 6d 61 63 68 69 6e 65 3f |y Acorn machine?|
00000b70 0a 0a 53 65 63 74 69 6f 6e 20 33 3a 20 43 6f 6e |..Section 3: Con|
00000b80 66 69 67 75 72 61 74 69 6f 6e 2e 0a 2d 2d 2d 2d |figuration..----|
00000b90 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00000ba0 2d 2d 2d 2d 2d 0a 0a 33 2e 31 29 20 57 68 61 74 |-----..3.1) What|
00000bb0 20 69 73 20 41 44 46 53 42 75 66 66 65 72 73 20 | is ADFSBuffers |
00000bc0 61 6e 64 20 77 68 61 74 20 69 73 20 74 68 65 20 |and what is the |
00000bd0 62 65 73 74 20 73 65 74 74 69 6e 67 20 66 6f 72 |best setting for|
00000be0 20 69 74 3f 0a 33 2e 32 29 20 48 6f 77 20 64 6f | it?.3.2) How do|
00000bf0 20 49 20 65 6e 61 62 6c 65 20 73 6f 6c 69 64 20 | I enable solid |
00000c00 64 72 61 67 73 20 69 6e 20 52 49 53 43 20 4f 53 |drags in RISC OS|
00000c10 20 33 3f 0a 0a 53 65 63 74 69 6f 6e 20 34 3a 20 | 3?..Section 4: |
00000c20 48 61 72 64 77 61 72 65 20 70 72 6f 62 6c 65 6d |Hardware problem|
00000c30 73 2e 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |s..-------------|
00000c40 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00000c50 0a 0a 34 2e 31 29 20 4d 79 20 68 61 72 64 20 64 |..4.1) My hard d|
00000c60 72 69 76 65 20 67 69 76 65 73 20 6d 65 20 64 69 |rive gives me di|
00000c70 73 63 20 65 72 72 6f 72 73 20 77 68 65 6e 20 49 |sc errors when I|
00000c80 20 75 73 65 2c 20 77 68 61 74 20 64 6f 20 74 68 | use, what do th|
00000c90 65 20 65 72 72 6f 72 0a 20 20 20 20 20 6e 75 6d |e error. num|
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00000cb0 4d 79 20 64 69 73 63 20 67 69 76 65 73 20 6d 65 |My disc gives me|
00000cc0 20 61 20 27 42 72 6f 6b 65 6e 20 44 69 72 65 63 | a 'Broken Direc|
00000cd0 74 6f 72 79 27 20 6f 72 20 6d 79 20 46 72 65 65 |tory' or my Free|
00000ce0 20 53 70 61 63 65 20 4d 61 70 20 69 73 20 63 6f | Space Map is co|
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00000d10 57 68 61 74 20 64 6f 65 73 20 74 68 65 20 70 6f |What does the po|
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00000d30 20 63 68 65 63 6b 20 61 6e 64 20 68 6f 77 20 64 | check and how d|
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00000d50 72 6f 72 73 0a 20 20 20 20 20 62 61 63 6b 20 74 |rors. back t|
00000d60 6f 20 79 6f 75 3f 0a 34 2e 34 29 20 4d 79 20 52 |o you?.4.4) My R|
00000d70 65 61 6c 20 54 69 6d 65 20 43 6c 6f 63 6b 20 68 |eal Time Clock h|
00000d80 61 73 20 70 61 75 73 65 64 2c 20 68 6f 77 20 64 |as paused, how d|
00000d90 6f 20 49 20 72 65 73 74 61 72 74 20 69 74 3f 0a |o I restart it?.|
00000da0 34 2e 35 29 20 42 65 69 6e 67 20 6f 66 20 61 20 |4.5) Being of a |
00000db0 6e 6f 6e 2d 68 75 6d 61 6e 6f 69 64 20 72 61 63 |non-humanoid rac|
00000dc0 65 20 49 20 64 6f 6e 27 74 20 68 61 76 65 20 68 |e I don't have h|
00000dd0 61 6e 64 73 2c 20 6f 6e 6c 79 20 74 65 6e 74 61 |ands, only tenta|
00000de0 63 6c 65 73 2e 20 41 72 65 0a 20 20 20 20 20 74 |cles. Are. t|
00000df0 68 65 72 65 20 61 6c 74 65 72 6e 61 74 69 76 65 |here alternative|
00000e00 73 20 74 6f 20 74 68 65 20 6b 65 79 62 6f 61 72 |s to the keyboar|
00000e10 64 20 66 6f 72 20 64 61 74 61 20 65 6e 74 72 79 |d for data entry|
00000e20 20 69 6e 74 6f 20 41 63 6f 72 6e 20 6d 61 63 68 | into Acorn mach|
00000e30 69 6e 65 73 3f 0a 0a 53 65 63 74 69 6f 6e 20 35 |ines?..Section 5|
00000e40 3a 20 53 6f 66 74 77 61 72 65 20 49 73 73 75 65 |: Software Issue|
00000e50 73 2e 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |s..-------------|
00000e60 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a |--------------..|
00000e70 35 2e 31 29 20 57 68 65 6e 20 75 73 69 6e 67 20 |5.1) When using |
00000e80 44 4f 53 20 64 69 73 63 73 20 49 20 6f 66 74 65 |DOS discs I ofte|
00000e90 6e 20 66 69 6e 64 20 74 68 65 20 6c 61 73 74 20 |n find the last |
00000ea0 70 61 72 74 73 20 6f 66 20 66 69 6c 65 73 20 68 |parts of files h|
00000eb0 61 76 65 6e 27 74 20 62 65 65 6e 0a 20 20 20 20 |aven't been. |
00000ec0 20 77 72 69 74 74 65 6e 20 63 6f 72 72 65 63 74 | written correct|
00000ed0 6c 79 2c 20 77 68 61 74 20 61 6d 20 49 20 64 6f |ly, what am I do|
00000ee0 69 6e 67 20 77 72 6f 6e 67 3f 0a 35 2e 32 29 20 |ing wrong?.5.2) |
00000ef0 49 20 68 61 76 65 20 6f 62 74 61 69 6e 65 64 20 |I have obtained |
00000f00 5b 50 44 5d 20 70 72 6f 67 72 61 6d 20 58 20 62 |[PD] program X b|
00000f10 75 74 20 66 69 6e 64 20 69 74 20 6e 65 65 64 73 |ut find it needs|
00000f20 20 5b 76 65 72 73 69 6f 6e 20 59 2e 59 59 20 6f | [version Y.YY o|
00000f30 66 5d 0a 20 20 20 20 20 6d 6f 64 75 6c 65 20 5a |f]. module Z|
00000f40 2c 20 77 68 69 63 68 20 49 20 64 6f 6e 27 74 20 |, which I don't |
00000f50 68 61 76 65 2e 20 57 68 65 72 65 20 63 61 6e 20 |have. Where can |
00000f60 49 20 67 65 74 20 69 74 3f 0a 35 2e 33 29 20 57 |I get it?.5.3) W|
00000f70 68 61 74 20 69 73 20 74 68 65 20 63 75 72 72 65 |hat is the curre|
00000f80 6e 74 20 46 69 6c 65 2d 74 79 70 65 20 61 6c 6c |nt File-type all|
00000f90 6f 63 61 74 69 6f 6e 20 72 61 6e 67 65 73 20 61 |ocation ranges a|
00000fa0 6e 64 20 77 68 79 20 77 6f 6e 27 74 20 41 63 6f |nd why won't Aco|
00000fb0 72 6e 0a 20 20 20 20 20 70 72 6f 76 69 64 65 20 |rn. provide |
00000fc0 61 20 66 75 6c 6c 20 66 69 6c 65 2d 74 79 70 65 |a full file-type|
00000fd0 20 6c 69 73 74 3f 0a 35 2e 34 29 20 49 73 20 74 | list?.5.4) Is t|
00000fe0 68 65 72 65 20 61 20 4d 6f 64 75 6c 61 20 32 20 |here a Modula 2 |
00000ff0 63 6f 6d 70 69 6c 65 72 20 66 6f 72 20 74 68 65 |compiler for the|
00001000 20 41 72 63 3f 0a 35 2e 35 29 20 57 68 61 74 20 | Arc?.5.5) What |
00001010 76 65 72 73 69 6f 6e 20 6f 66 20 6d 6f 64 75 6c |version of modul|
00001020 65 20 58 20 63 61 6e 20 49 20 61 73 73 75 6d 65 |e X can I assume|
00001030 20 74 68 61 74 20 61 6c 6c 20 75 73 65 72 73 20 | that all users |
00001040 68 61 76 65 3f 0a 35 2e 36 29 20 57 68 61 74 27 |have?.5.6) What'|
00001050 73 20 74 68 65 20 6d 69 6e 69 6d 75 6d 20 76 65 |s the minimum ve|
00001060 72 73 69 6f 6e 20 6f 66 20 6d 6f 64 75 6c 65 20 |rsion of module |
00001070 58 20 74 68 61 74 20 6d 79 20 70 72 6f 67 72 61 |X that my progra|
00001080 6d 20 6e 65 65 64 73 3f 20 57 68 61 74 0a 20 20 |m needs? What. |
00001090 20 20 20 66 65 61 74 75 72 65 73 20 77 65 72 65 | features were|
000010a0 20 69 6e 74 72 6f 64 75 63 65 64 2f 77 68 61 74 | introduced/what|
000010b0 20 62 75 67 73 20 77 65 72 65 20 66 69 78 65 64 | bugs were fixed|
000010c0 20 69 6e 20 77 68 69 63 68 20 76 65 72 73 69 6f | in which versio|
000010d0 6e 73 3f 0a 35 2e 37 29 20 57 68 61 74 20 50 75 |ns?.5.7) What Pu|
000010e0 62 6c 69 63 20 44 6f 6d 61 69 6e 20 4c 61 6e 67 |blic Domain Lang|
000010f0 75 61 67 65 73 20 61 72 65 20 61 76 61 69 6c 61 |uages are availa|
00001100 62 6c 65 20 66 6f 72 20 41 63 6f 72 6e 20 6d 61 |ble for Acorn ma|
00001110 63 68 69 6e 65 73 3f 0a 0a 53 65 63 74 69 6f 6e |chines?..Section|
00001120 20 36 3a 20 56 69 72 75 73 65 73 2e 0a 2d 2d 2d | 6: Viruses..---|
00001130 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00001140 0a 0a 36 2e 31 29 20 48 6f 77 20 63 61 6e 20 49 |..6.1) How can I|
00001150 20 70 72 6f 74 65 63 74 20 61 67 61 69 6e 73 74 | protect against|
00001160 20 76 69 72 75 73 65 73 3f 0a 36 2e 32 29 20 57 | viruses?.6.2) W|
00001170 68 65 72 65 20 63 61 6e 20 49 20 6f 62 74 61 69 |here can I obtai|
00001180 6e 20 21 4b 69 6c 6c 65 72 3f 0a 0a 53 65 63 74 |n !Killer?..Sect|
00001190 69 6f 6e 20 37 3a 20 4e 65 74 20 72 65 73 6f 75 |ion 7: Net resou|
000011a0 72 63 65 73 2e 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |rces..----------|
000011b0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a |---------------.|
000011c0 0a 37 2e 31 29 20 57 68 61 74 20 61 72 63 68 69 |.7.1) What archi|
000011d0 76 65 73 2f 46 54 50 20 73 69 74 65 73 20 61 72 |ves/FTP sites ar|
000011e0 65 20 61 76 61 69 6c 61 62 6c 65 3f 0a 37 2e 32 |e available?.7.2|
000011f0 29 20 57 68 61 74 20 41 63 6f 72 6e 20 72 65 6c |) What Acorn rel|
00001200 61 74 65 64 20 63 6f 6d 70 61 6e 69 65 73 20 61 |ated companies a|
00001210 72 65 20 61 76 61 69 6c 61 62 6c 65 20 6f 6e 20 |re available on |
00001220 74 68 65 20 6e 65 74 20 76 69 61 20 65 6d 61 69 |the net via emai|
00001230 6c 3f 0a 37 2e 33 29 20 57 68 79 20 68 61 76 65 |l?.7.3) Why have|
00001240 20 74 68 65 72 65 20 62 65 65 6e 20 6e 6f 20 70 | there been no p|
00001250 6f 73 74 69 6e 67 73 20 74 6f 20 63 6f 6d 70 2e |ostings to comp.|
00001260 7b 62 69 6e 61 72 69 65 73 2c 73 6f 75 72 63 65 |{binaries,source|
00001270 73 7d 2e 61 63 6f 72 6e 0a 20 20 20 20 20 72 65 |s}.acorn. re|
00001280 63 65 6e 74 6c 79 3f 0a 37 2e 34 29 20 48 6f 77 |cently?.7.4) How|
00001290 20 74 6f 20 72 65 74 72 65 69 76 65 20 74 68 65 | to retreive the|
000012a0 20 46 41 51 20 66 72 6f 6d 20 74 68 65 20 73 6f | FAQ from the so|
000012b0 75 72 63 65 2e 2e 2e 20 7b 20 4f 72 20 68 6f 77 |urce... { Or how|
000012c0 20 74 6f 20 75 73 65 20 6d 79 20 65 6d 61 69 6c | to use my email|
000012d0 0a 20 20 20 20 20 73 65 72 76 65 72 2e 20 7d 0a |. server. }.|
000012e0 37 2e 35 29 20 57 68 61 74 20 57 57 57 20 70 61 |7.5) What WWW pa|
000012f0 67 65 73 20 61 72 65 20 6f 75 74 20 74 68 65 72 |ges are out ther|
00001300 65 20 66 6f 72 20 41 63 6f 72 6e 20 74 6f 70 69 |e for Acorn topi|
00001310 63 73 3f 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |cs?..-----------|
00001320 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00001360 2d 0a 53 65 63 74 69 6f 6e 20 31 3a 20 41 63 6f |-.Section 1: Aco|
00001370 72 6e 20 48 61 72 64 77 61 72 65 20 61 6e 64 20 |rn Hardware and |
00001380 4f 70 65 72 61 74 69 6e 67 20 53 79 73 74 65 6d |Operating System|
00001390 73 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |s.--------------|
000013a0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
000013d0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a |--------------..|
000013e0 31 2e 31 29 20 57 68 61 74 20 6b 69 6e 64 20 6f |1.1) What kind o|
000013f0 66 20 41 63 6f 72 6e 20 6d 61 63 68 69 6e 65 73 |f Acorn machines|
00001400 20 61 72 65 20 74 68 65 72 65 3f 0a 0a 20 20 20 | are there?.. |
00001410 54 68 65 20 66 75 6c 6c 20 6c 69 73 74 20 6f 66 |The full list of|
00001420 20 41 63 6f 72 6e 20 6d 61 64 65 20 6d 61 63 68 | Acorn made mach|
00001430 69 6e 65 73 20 69 73 20 73 6f 6d 65 77 68 61 74 |ines is somewhat|
00001440 20 6c 65 6e 67 74 68 79 20 6e 6f 77 20 61 6e 64 | lengthy now and|
00001450 20 61 72 65 0a 6d 6f 73 74 6c 79 20 6e 6f 20 6c | are.mostly no l|
00001460 6f 6e 67 65 72 20 69 6e 20 6d 61 6e 75 66 61 63 |onger in manufac|
00001470 74 75 72 65 2e 20 41 63 63 6f 72 64 69 6e 67 6c |ture. Accordingl|
00001480 79 20 74 68 69 73 20 6c 69 73 74 20 64 69 73 74 |y this list dist|
00001490 72 69 62 75 74 65 64 20 69 6e 20 74 68 65 0a 46 |ributed in the.F|
000014a0 41 51 20 69 6e 63 6c 75 64 65 73 20 6f 6e 6c 79 |AQ includes only|
000014b0 20 41 72 63 68 69 6d 65 64 65 73 2f 41 52 4d 20 | Archimedes/ARM |
000014c0 62 61 73 65 64 20 6d 61 63 68 69 6e 65 73 2c 20 |based machines, |
000014d0 77 68 69 63 68 20 61 72 65 20 74 68 65 20 63 75 |which are the cu|
000014e0 72 72 65 6e 74 6c 79 0a 6d 61 6e 75 66 61 63 74 |rrently.manufact|
000014f0 75 72 65 64 20 62 79 20 41 63 6f 72 6e 2e 20 41 |ured by Acorn. A|
00001500 20 66 75 6c 6c 20 6c 69 73 74 20 69 73 20 6d 61 | full list is ma|
00001510 69 6e 74 61 69 6e 65 64 20 69 6e 20 6d 79 20 65 |intained in my e|
00001520 6d 61 69 6c 20 73 65 72 76 65 72 20 75 6e 64 65 |mail server unde|
00001530 72 0a 74 68 65 20 66 69 6c 65 6e 61 6d 65 20 27 |r.the filename '|
00001540 4d 61 63 68 69 6e 65 4c 73 74 27 2e 20 54 68 69 |MachineLst'. Thi|
00001550 73 20 69 73 2c 20 61 73 20 66 61 72 20 61 73 20 |s is, as far as |
00001560 49 20 61 6d 20 61 77 61 72 65 2c 20 61 20 63 6f |I am aware, a co|
00001570 6d 70 6c 65 74 65 20 6c 69 73 74 20 6f 66 0a 61 |mplete list of.a|
00001580 6c 6c 20 41 63 6f 72 6e 20 6d 61 63 68 69 6e 65 |ll Acorn machine|
00001590 73 20 6d 61 64 65 20 77 69 74 68 20 74 68 65 20 |s made with the |
000015a0 70 6f 73 73 69 62 6c 65 20 65 78 63 65 70 74 69 |possible excepti|
000015b0 6f 6e 20 6f 66 20 74 68 65 20 6c 61 74 65 73 74 |on of the latest|
000015c0 20 6d 61 63 68 69 6e 65 73 0a 66 6f 72 20 77 68 | machines.for wh|
000015d0 69 63 68 20 49 20 68 61 76 65 20 79 65 74 20 74 |ich I have yet t|
000015e0 6f 20 67 65 74 20 74 68 65 20 64 65 74 61 69 6c |o get the detail|
000015f0 65 64 20 73 70 65 63 69 66 69 63 61 74 69 6f 6e |ed specification|
00001600 73 2e 0a 0a 41 34 20 2d 20 41 63 6f 72 6e 73 20 |s...A4 - Acorns |
00001610 66 69 72 73 74 20 70 6f 72 74 61 62 6c 65 20 6d |first portable m|
00001620 61 63 68 69 6e 65 2e 20 54 68 65 20 41 34 20 69 |achine. The A4 i|
00001630 73 20 66 75 6e 63 74 69 6f 6e 61 6c 6c 79 20 61 |s functionally a|
00001640 6e 20 41 35 30 30 30 20 69 6e 0a 20 20 20 70 6f |n A5000 in. po|
00001650 72 74 61 62 6c 65 20 66 6f 72 6d 2e 20 46 65 61 |rtable form. Fea|
00001660 74 75 72 69 6e 67 20 70 6f 77 65 72 20 73 61 76 |turing power sav|
00001670 65 20 6d 6f 64 65 73 2c 20 61 6e 20 4c 43 44 20 |e modes, an LCD |
00001680 73 63 72 65 65 6e 20 61 6e 64 20 73 6f 66 74 77 |screen and softw|
00001690 61 72 65 0a 20 20 20 63 6f 6e 66 69 67 75 72 61 |are. configura|
000016a0 74 69 6f 6e 20 6f 66 20 74 68 65 20 70 6f 77 65 |tion of the powe|
000016b0 72 20 73 61 76 69 6e 67 20 66 65 61 74 75 72 65 |r saving feature|
000016c0 73 20 69 74 20 77 61 73 20 72 65 6c 65 61 73 65 |s it was release|
000016d0 64 20 4a 75 6c 79 20 31 39 39 32 2e 20 49 74 0a |d July 1992. It.|
000016e0 20 20 20 69 73 20 63 61 6c 6c 65 64 20 74 68 65 | is called the|
000016f0 20 41 34 20 62 65 63 61 75 73 65 20 69 74 27 73 | A4 because it's|
00001700 20 66 6f 6f 74 70 72 69 6e 74 20 6f 6e 20 61 20 | footprint on a |
00001710 64 65 73 6b 20 69 73 20 61 70 70 61 72 65 6e 74 |desk is apparent|
00001720 6c 79 20 74 68 61 74 20 6f 66 0a 20 20 20 61 6e |ly that of. an|
00001730 20 41 34 20 70 69 65 63 65 20 6f 66 20 70 61 70 | A4 piece of pap|
00001740 65 72 2e 0a 20 20 20 32 30 34 38 6b 20 4d 65 6d |er.. 2048k Mem|
00001750 6f 72 79 0a 20 20 20 41 64 76 61 6e 63 65 64 20 |ory. Advanced |
00001760 44 69 73 63 20 46 69 6c 69 6e 67 20 53 79 73 74 |Disc Filing Syst|
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000017b0 4d 48 7a 20 6e 6f 72 6d 61 6c 6c 79 2c 20 36 20 |MHz normally, 6 |
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00001860 74 68 65 20 41 33 30 32 30 2e 20 42 6f 74 68 20 |the A3020. Both |
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00001890 6c 79 20 73 6f 6c 75 74 69 6f 6e 27 20 6d 61 63 |ly solution' mac|
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000018c0 20 20 66 69 72 73 74 20 6d 61 63 68 69 6e 65 73 | first machines|
000018d0 20 74 6f 20 66 65 61 74 75 72 65 20 74 68 65 20 | to feature the |
000018e0 41 52 4d 32 35 30 20 70 72 6f 63 65 73 73 6f 72 |ARM250 processor|
000018f0 20 6f 66 66 65 72 69 6e 67 20 69 6d 70 72 6f 76 | offering improv|
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00001940 65 73 69 67 6e 65 64 20 74 6f 0a 20 20 20 73 75 |esigned to. su|
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00001960 30 30 20 6d 61 63 68 69 6e 65 20 61 73 20 61 20 |00 machine as a |
00001970 6c 6f 77 20 63 6f 73 74 20 65 6e 74 72 79 20 6d |low cost entry m|
00001980 61 63 68 69 6e 65 20 69 6e 74 6f 20 74 68 65 20 |achine into the |
00001990 41 63 6f 72 6e 0a 20 20 20 77 6f 72 6c 64 2e 20 |Acorn. world. |
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000019d0 41 72 63 68 69 6d 65 64 65 73 20 73 65 72 69 65 |Archimedes serie|
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00001c40 20 61 20 68 69 67 68 20 64 65 6e 73 69 74 79 20 | a high density |
00001c50 66 6c 6f 70 70 79 20 64 72 69 76 65 0a 20 20 20 |floppy drive. |
00001c60 61 6e 64 20 61 6e 20 38 30 4d 62 20 49 44 45 20 |and an 80Mb IDE |
00001c70 64 72 69 76 65 20 62 79 20 64 65 66 61 75 6c 74 |drive by default|
00001c80 2e 20 54 68 65 20 61 69 6d 20 6f 66 20 74 68 69 |. The aim of thi|
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00001ca0 6f 6e 67 6c 79 0a 20 20 20 74 6f 77 61 72 64 73 |ongly. towards|
00001cb0 20 74 68 65 20 68 6f 6d 65 20 6f 66 66 69 63 65 | the home office|
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*
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*
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*
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000031a0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
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*
00003b30 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 31 2e 36 29 20 |---------..1.6) |
00003b40 57 68 61 74 20 61 72 65 20 74 68 65 20 67 72 61 |What are the gra|
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00003d80 20 20 20 20 20 20 20 20 70 6f 73 73 69 62 6c 65 | possible|
00003d90 20 3a 2d 0a 0a 20 20 20 20 20 20 20 20 20 20 20 | :-.. |
00003da0 20 20 20 20 20 20 20 20 20 20 20 20 58 20 72 65 | X re|
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00003dc0 75 72 73 0a 20 20 20 20 20 20 20 20 20 20 20 20 |urs. |
00003dd0 20 20 20 20 20 20 20 20 20 20 20 36 34 30 20 20 | 640 |
00003de0 20 20 20 32 35 36 20 20 20 20 20 32 0a 20 20 20 | 256 2. |
00003df0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00003e00 20 20 20 20 33 32 30 20 20 20 20 20 32 35 36 20 | 320 256 |
00003e10 20 20 20 20 32 2c 34 0a 20 20 20 20 20 20 20 20 | 2,4. |
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00004fa0 20 20 20 20 20 65 6e 74 72 69 65 73 2e 20 41 6c | entries. Al|
00004fb0 6c 20 6f 74 68 65 72 20 6d 6f 64 65 73 20 61 72 |l other modes ar|
00004fc0 65 20 61 76 61 69 6c 61 62 6c 65 20 77 69 74 68 |e available with|
00004fd0 20 73 74 61 6e 64 61 72 64 20 44 52 41 4d 2e 0a | standard DRAM..|
00004fe0 0a 20 20 20 20 20 20 20 20 20 20 20 46 75 72 74 |. Furt|
00004ff0 68 65 72 6d 6f 72 65 20 74 68 65 20 6e 65 77 20 |hermore the new |
00005000 56 49 44 43 32 30 20 68 61 73 20 32 35 36 20 70 |VIDC20 has 256 p|
00005010 61 6c 65 74 74 65 20 72 65 67 69 73 74 65 72 73 |alette registers|
00005020 2c 20 63 6f 6d 70 61 72 65 64 20 74 6f 0a 20 20 |, compared to. |
00005030 20 20 20 20 20 20 74 68 65 20 56 49 44 43 31 61 | the VIDC1a|
00005040 27 73 20 31 36 2c 20 61 6e 64 20 61 20 70 61 6c |'s 16, and a pal|
00005050 65 74 74 65 20 72 61 6e 67 65 20 6f 66 20 31 36 |ette range of 16|
00005060 20 6d 69 6c 6c 69 6f 6e 20 63 6f 6c 6f 75 72 73 | million colours|
00005070 2e 20 45 78 61 63 74 6c 79 0a 20 20 20 20 20 20 |. Exactly. |
00005080 20 20 68 6f 77 20 74 68 65 20 63 6f 6c 6f 75 72 | how the colour|
00005090 20 6d 61 70 70 69 6e 67 20 69 6e 20 33 32 2c 30 | mapping in 32,0|
000050a0 30 30 20 6d 6f 64 65 73 20 69 73 20 68 61 6e 64 |00 modes is hand|
000050b0 6c 65 64 20 69 73 20 6e 6f 74 20 79 65 74 20 63 |led is not yet c|
000050c0 6c 65 61 72 2e 0a 20 20 20 20 20 20 20 20 41 67 |lear.. Ag|
000050d0 61 69 6e 20 74 68 65 73 65 20 61 72 65 20 6a 75 |ain these are ju|
000050e0 73 74 20 73 74 61 6e 64 61 72 64 20 73 63 72 65 |st standard scre|
000050f0 65 6e 20 6d 6f 64 65 73 20 70 72 6f 76 69 64 65 |en modes provide|
00005100 64 2c 20 61 6e 64 20 65 76 65 6e 0a 20 20 20 20 |d, and even. |
00005110 20 20 20 20 70 65 72 68 61 70 73 20 6e 6f 74 20 | perhaps not |
00005120 61 6c 6c 20 6f 66 20 74 68 65 6d 20 2d 20 74 68 |all of them - th|
00005130 65 20 52 69 73 63 20 50 43 20 69 73 20 63 6f 6d |e Risc PC is com|
00005140 70 6c 65 74 65 6c 79 20 63 6f 6e 66 69 67 75 72 |pletely configur|
00005150 61 62 6c 65 20 69 6e 0a 20 20 20 20 20 20 20 20 |able in. |
00005160 64 69 73 70 6c 61 79 20 72 65 73 6f 6c 75 74 69 |display resoluti|
00005170 6f 6e 73 20 61 6e 64 20 63 61 70 61 62 69 6c 69 |ons and capabili|
00005180 74 69 65 73 2e 0a 0a 20 20 20 49 74 20 6d 75 73 |ties... It mus|
00005190 74 20 62 65 20 73 74 72 65 73 73 65 64 20 61 67 |t be stressed ag|
000051a0 61 69 6e 20 74 68 61 74 20 74 68 65 73 65 20 61 |ain that these a|
000051b0 72 65 20 6d 65 72 65 6c 79 20 74 68 65 20 72 65 |re merely the re|
000051c0 73 6f 6c 75 74 69 6f 6e 73 20 61 6e 64 0a 63 6f |solutions and.co|
000051d0 6c 6f 75 72 20 64 65 70 74 68 73 20 64 65 66 69 |lour depths defi|
000051e0 6e 65 64 20 62 79 20 74 68 65 20 6d 61 63 68 69 |ned by the machi|
000051f0 6e 65 73 20 6f 70 65 72 61 74 69 6e 67 20 73 79 |nes operating sy|
00005200 73 74 65 6d 73 2e 20 49 6e 20 61 6c 6c 20 6f 66 |stems. In all of|
00005210 20 74 68 65 0a 6d 61 63 68 69 6e 65 73 20 63 61 | the.machines ca|
00005220 73 65 73 20 74 68 65 72 65 20 61 72 65 20 62 6f |ses there are bo|
00005230 74 68 20 68 61 72 64 77 61 72 65 20 61 6e 64 20 |th hardware and |
00005240 73 6f 66 74 77 61 72 65 20 65 78 74 65 6e 73 69 |software extensi|
00005250 6f 6e 73 20 74 68 61 74 20 61 6c 74 65 72 0a 61 |ons that alter.a|
00005260 6e 64 20 69 6e 63 72 65 61 73 65 20 74 68 65 20 |nd increase the |
00005270 6c 69 73 74 2e 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d |list...---------|
00005280 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
000052c0 2d 2d 2d 0a 0a 31 2e 37 29 20 49 73 20 56 69 72 |---..1.7) Is Vir|
000052d0 74 75 61 6c 20 4d 65 6d 6f 72 79 20 70 6f 73 73 |tual Memory poss|
000052e0 69 62 6c 65 20 75 6e 64 65 72 20 52 49 53 43 20 |ible under RISC |
000052f0 4f 53 3f 0a 0a 20 20 20 53 68 6f 72 74 20 61 6e |OS?.. Short an|
00005300 73 77 65 72 2c 20 66 75 6c 6c 20 56 4d 20 69 73 |swer, full VM is|
00005310 20 2a 6e 6f 74 2a 20 70 6f 73 73 69 62 6c 65 20 | *not* possible |
00005320 75 6e 64 65 72 20 74 68 65 20 63 75 72 72 65 6e |under the curren|
00005330 74 20 76 65 72 73 69 6f 6e 73 20 6f 66 0a 52 49 |t versions of.RI|
00005340 53 43 20 4f 53 2e 20 54 68 65 20 70 72 6f 62 6c |SC OS. The probl|
00005350 65 6d 20 69 73 20 74 68 61 74 20 6d 6f 73 74 20 |em is that most |
00005360 6f 66 20 52 49 53 43 20 4f 53 20 77 6f 72 6b 73 |of RISC OS works|
00005370 20 69 6e 20 53 56 43 20 6d 6f 64 65 2c 20 69 66 | in SVC mode, if|
00005380 20 61 0a 44 61 74 61 46 65 74 63 68 20 61 62 6f | a.DataFetch abo|
00005390 72 74 20 6f 63 63 75 72 73 20 74 68 65 6e 20 52 |rt occurs then R|
000053a0 31 34 5f 73 76 63 20 2a 69 73 2a 20 63 6f 72 72 |14_svc *is* corr|
000053b0 75 70 74 65 64 2e 20 54 68 69 73 20 6d 61 6b 65 |upted. This make|
000053c0 73 20 72 65 74 75 72 6e 69 6e 67 0a 66 72 6f 6d |s returning.from|
000053d0 20 74 68 65 20 53 57 49 20 73 6f 6d 65 77 68 61 | the SWI somewha|
000053e0 74 20 70 72 6f 62 6c 65 6d 61 74 69 63 2e 20 54 |t problematic. T|
000053f0 68 69 73 20 69 73 20 61 20 68 61 72 64 77 61 72 |his is a hardwar|
00005400 65 20 6c 69 6d 69 74 61 74 69 6f 6e 20 77 69 74 |e limitation wit|
00005410 68 20 74 68 65 0a 41 52 4d 32 20 61 6e 64 20 41 |h the.ARM2 and A|
00005420 52 4d 33 20 63 65 6c 6c 20 63 68 69 70 73 2e 20 |RM3 cell chips. |
00005430 46 75 74 75 72 65 20 68 61 72 64 77 61 72 65 20 |Future hardware |
00005440 75 73 69 6e 67 20 41 52 4d 36 20 6f 72 20 62 65 |using ARM6 or be|
00005450 74 74 65 72 20 70 72 6f 63 65 73 73 6f 72 0a 63 |tter processor.c|
00005460 65 6c 6c 73 20 68 61 76 65 20 73 70 65 63 69 61 |ells have specia|
00005470 6c 20 6d 65 6d 6f 72 79 20 61 62 6f 72 74 20 6d |l memory abort m|
00005480 6f 64 65 73 20 74 68 61 74 20 61 6c 6c 65 76 69 |odes that allevi|
00005490 61 74 65 20 74 68 69 73 20 70 72 6f 62 6c 65 6d |ate this problem|
000054a0 20 73 6f 20 66 75 74 75 72 65 0a 6d 61 63 68 69 | so future.machi|
000054b0 6e 65 73 20 61 6e 64 20 69 6e 63 61 72 6e 61 74 |nes and incarnat|
000054c0 69 6f 6e 73 20 6f 66 20 52 49 53 43 20 4f 53 20 |ions of RISC OS |
000054d0 6d 61 79 20 77 65 6c 6c 20 68 61 76 65 20 56 4d |may well have VM|
000054e0 20 61 76 61 69 6c 61 62 6c 65 2e 20 49 6e 64 65 | available. Inde|
000054f0 65 64 20 74 68 65 0a 6e 65 77 20 52 69 73 63 50 |ed the.new RiscP|
00005500 43 20 6d 61 63 68 69 6e 65 73 20 6d 61 6b 65 20 |C machines make |
00005510 70 72 69 6d 65 20 63 61 6e 64 69 64 61 74 65 73 |prime candidates|
00005520 20 66 6f 72 20 68 61 76 69 6e 67 20 76 69 72 74 | for having virt|
00005530 75 61 6c 20 6d 65 6d 6f 72 79 2e 0a 0a 20 20 20 |ual memory... |
00005540 48 6f 77 65 76 65 72 20 6c 69 6d 69 74 65 64 20 |However limited |
00005550 73 6f 6c 75 74 69 6f 6e 73 20 61 72 65 20 61 76 |solutions are av|
00005560 61 69 6c 61 62 6c 65 20 6e 6f 77 2e 20 21 56 69 |ailable now. !Vi|
00005570 72 74 75 61 6c 20 69 73 20 6f 6e 65 20 73 75 63 |rtual is one suc|
00005580 68 0a 73 6f 6c 75 74 69 6f 6e 20 61 6c 6c 6f 77 |h.solution allow|
00005590 69 6e 67 20 56 4d 20 66 6f 72 20 61 20 75 73 65 |ing VM for a use|
000055a0 72 20 70 72 6f 63 65 73 73 20 75 73 69 6e 67 20 |r process using |
000055b0 61 20 6c 69 6d 69 74 65 64 20 73 75 62 73 65 74 |a limited subset|
000055c0 20 6f 66 20 53 57 49 27 73 20 74 68 61 74 0a 61 | of SWI's that.a|
000055d0 72 65 20 63 61 72 65 66 75 6c 6c 79 20 27 70 72 |re carefully 'pr|
000055e0 6f 74 65 63 74 65 64 27 20 61 67 61 69 6e 73 74 |otected' against|
000055f0 20 52 31 34 5f 73 76 63 20 62 65 69 6e 67 20 63 | R14_svc being c|
00005600 6f 72 72 75 70 74 65 64 2e 20 53 75 63 68 20 73 |orrupted. Such s|
00005610 6f 6c 75 74 69 6f 6e 73 0a 73 75 66 66 65 72 20 |olutions.suffer |
00005620 66 72 6f 6d 20 74 68 65 20 72 65 73 74 72 69 63 |from the restric|
00005630 74 65 64 20 73 65 74 20 6f 66 20 53 57 49 27 73 |ted set of SWI's|
00005640 20 74 68 65 79 20 73 75 70 70 6f 72 74 20 61 6e | they support an|
00005650 64 20 61 72 65 20 6d 6f 73 74 6c 79 20 75 73 65 |d are mostly use|
00005660 66 75 6c 0a 66 6f 72 20 62 61 74 63 68 20 73 74 |ful.for batch st|
00005670 79 6c 65 20 70 72 6f 63 65 73 73 69 6e 67 20 6a |yle processing j|
00005680 6f 62 73 20 6c 69 6b 65 20 63 6f 6d 70 69 6c 61 |obs like compila|
00005690 74 69 6f 6e 20 6f 72 20 6d 65 6d 6f 72 79 20 69 |tion or memory i|
000056a0 6e 74 65 6e 73 69 76 65 0a 70 72 6f 63 65 73 73 |ntensive.process|
000056b0 69 6e 67 20 6a 6f 62 73 2e 0a 0a 2d 2d 2d 2d 2d |ing jobs...-----|
000056c0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00005700 2d 2d 2d 2d 2d 2d 0a 53 65 63 74 69 6f 6e 20 32 |------.Section 2|
00005710 3a 20 55 70 67 72 61 64 65 73 20 61 6e 64 20 45 |: Upgrades and E|
00005720 78 70 61 6e 73 69 6f 6e 2e 0a 2d 2d 2d 2d 2d 2d |xpansion..------|
00005730 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00005770 2d 2d 2d 2d 2d 2d 0a 0a 32 2e 31 29 20 57 68 61 |------..2.1) Wha|
00005780 74 20 61 72 65 20 74 68 65 20 6d 65 6d 6f 72 79 |t are the memory|
00005790 20 6c 69 6d 69 74 73 20 6f 66 20 74 68 65 20 76 | limits of the v|
000057a0 61 72 69 6f 75 73 20 41 63 6f 72 6e 20 6d 61 63 |arious Acorn mac|
000057b0 68 69 6e 65 73 3f 0a 0a 20 20 20 46 6f 72 20 74 |hines?.. For t|
000057c0 68 65 20 6d 6f 73 74 20 70 61 72 74 20 74 68 65 |he most part the|
000057d0 20 38 20 62 69 74 20 6d 61 63 68 69 6e 65 73 20 | 8 bit machines |
000057e0 77 65 72 65 20 6c 69 6d 69 74 65 64 20 74 6f 20 |were limited to |
000057f0 61 20 6d 61 78 69 6d 75 6d 20 6f 66 20 61 72 6f |a maximum of aro|
00005800 75 6e 64 0a 20 20 20 32 35 36 6b 20 6f 66 20 6d |und. 256k of m|
00005810 65 6d 6f 72 79 2e 20 41 6c 74 68 6f 75 67 68 20 |emory. Although |
00005820 76 61 72 69 6f 75 73 20 65 78 70 61 6e 73 69 6f |various expansio|
00005830 6e 20 73 79 73 74 65 6d 73 20 69 6e 63 6c 75 64 |n systems includ|
00005840 69 6e 67 20 73 65 63 6f 6e 64 0a 20 20 20 70 72 |ing second. pr|
00005850 6f 63 65 73 73 6f 72 73 20 65 66 66 65 63 74 69 |ocessors effecti|
00005860 76 65 6c 79 20 6d 65 61 6e 74 20 74 68 65 20 75 |vely meant the u|
00005870 70 70 65 72 20 6c 69 6d 69 74 20 77 61 73 20 61 |pper limit was a|
00005880 62 6f 75 74 20 31 20 4d 65 67 2e 20 28 41 6c 74 |bout 1 Meg. (Alt|
00005890 68 6f 75 67 68 20 49 0a 20 20 20 68 61 76 65 20 |hough I. have |
000058a0 62 65 65 6e 20 74 6f 6c 64 20 6f 66 20 61 20 73 |been told of a s|
000058b0 65 63 6f 6e 64 20 70 72 6f 63 65 73 73 6f 72 20 |econd processor |
000058c0 77 69 74 68 20 34 20 4d 65 67 20 6f 66 20 6d 65 |with 4 Meg of me|
000058d0 6d 6f 72 79 20 69 6e 20 69 74 2e 20 29 0a 20 20 |mory in it. ). |
000058e0 20 46 6f 72 20 74 68 65 20 65 61 72 6c 79 20 33 | For the early 3|
000058f0 32 20 62 69 74 20 6d 61 63 68 69 6e 65 73 20 2a |2 bit machines *|
00005900 74 68 65 2a 20 75 70 70 65 72 20 6c 69 6d 69 74 |the* upper limit|
00005910 20 63 75 72 72 65 6e 74 6c 79 20 69 73 20 31 36 | currently is 16|
00005920 20 4d 65 67 20 6f 66 0a 20 20 20 6d 65 6d 6f 72 | Meg of. memor|
00005930 79 2e 20 4e 6f 74 20 61 6c 6c 20 6f 66 20 74 68 |y. Not all of th|
00005940 65 20 72 61 6e 67 65 20 6f 66 20 6d 61 63 68 69 |e range of machi|
00005950 6e 65 73 20 61 72 65 20 63 61 70 61 62 6c 65 20 |nes are capable |
00005960 6f 66 20 74 68 69 73 20 68 6f 77 65 76 65 72 20 |of this however |
00005970 61 6e 64 0a 20 20 20 74 68 65 20 6c 69 73 74 20 |and. the list |
00005980 6c 6f 6f 6b 73 20 73 6f 6d 65 74 68 69 6e 67 20 |looks something |
00005990 6c 69 6b 65 20 74 68 69 73 20 3a 2d 0a 0a 20 20 |like this :-.. |
000059a0 20 41 33 78 78 20 20 20 2d 20 20 38 20 4d 62 20 | A3xx - 8 Mb |
000059b0 6d 61 78 69 6d 75 6d 20 74 68 72 6f 75 67 68 20 |maximum through |
000059c0 74 68 69 72 64 20 70 61 72 74 79 2c 20 31 20 4d |third party, 1 M|
000059d0 62 20 6f 66 66 69 63 69 61 6c 20 6c 69 6d 69 74 |b official limit|
000059e0 2e 0a 20 20 20 41 34 78 78 20 20 20 2d 20 20 38 |.. A4xx - 8|
000059f0 20 4d 62 20 6d 61 78 69 6d 75 6d 20 74 68 72 6f | Mb maximum thro|
00005a00 75 67 68 20 74 68 69 72 64 20 70 61 72 74 79 2c |ugh third party,|
00005a10 20 34 20 4d 62 20 6f 66 66 69 63 69 61 6c 20 6c | 4 Mb official l|
00005a20 69 6d 69 74 2e 0a 20 20 20 41 34 78 78 2f 49 20 |imit.. A4xx/I |
00005a30 2d 20 20 38 20 4d 62 20 6d 61 78 69 6d 75 6d 20 |- 8 Mb maximum |
00005a40 74 68 72 6f 75 67 68 20 74 68 69 72 64 20 70 61 |through third pa|
00005a50 72 74 79 2c 20 34 20 4d 62 20 6f 66 66 69 63 69 |rty, 4 Mb offici|
00005a60 61 6c 20 6c 69 6d 69 74 2e 0a 20 20 20 41 33 30 |al limit.. A30|
00005a70 30 30 20 20 2d 20 20 34 20 4d 62 20 6d 61 78 69 |00 - 4 Mb maxi|
00005a80 6d 75 6d 20 74 68 72 6f 75 67 68 20 74 68 69 72 |mum through thir|
00005a90 64 20 70 61 72 74 79 2c 20 32 20 4d 62 20 6f 66 |d party, 2 Mb of|
00005aa0 66 69 63 69 61 6c 20 6c 69 6d 69 74 2e 0a 20 20 |ficial limit.. |
00005ab0 20 41 35 34 30 20 20 20 2d 20 31 36 20 4d 62 20 | A540 - 16 Mb |
00005ac0 6d 61 78 69 6d 75 6d 2e 0a 20 20 20 41 35 30 30 |maximum.. A500|
00005ad0 30 20 20 2d 20 20 38 20 4d 62 20 6d 61 78 69 6d |0 - 8 Mb maxim|
00005ae0 75 6d 20 74 68 72 6f 75 67 68 20 74 68 69 72 64 |um through third|
00005af0 20 70 61 72 74 79 2c 20 34 20 4d 62 20 6f 66 66 | party, 4 Mb off|
00005b00 69 63 69 61 6c 20 6c 69 6d 69 74 2e 0a 20 20 20 |icial limit.. |
00005b10 41 34 20 20 20 20 20 2d 20 20 34 20 4d 62 20 6f |A4 - 4 Mb o|
00005b20 66 66 69 63 69 61 6c 20 6c 69 6d 69 74 2e 0a 20 |fficial limit.. |
00005b30 20 20 41 33 30 78 30 20 20 2d 20 20 34 20 4d 62 | A30x0 - 4 Mb|
00005b40 20 6f 66 66 69 63 69 61 6c 20 6c 69 6d 69 74 2e | official limit.|
00005b50 0a 20 20 20 41 34 30 30 30 20 20 2d 20 20 34 20 |. A4000 - 4 |
00005b60 4d 62 20 6f 66 66 69 63 69 61 6c 20 6c 69 6d 69 |Mb official limi|
00005b70 74 2e 0a 20 20 20 41 35 30 30 30 20 20 2d 20 20 |t.. A5000 - |
00005b80 38 20 4d 62 20 6f 66 66 69 63 69 61 6c 20 6c 69 |8 Mb official li|
00005b90 6d 69 74 2e 20 28 61 6c 70 68 61 20 76 61 72 69 |mit. (alpha vari|
00005ba0 61 6e 74 20 6f 66 20 74 68 65 20 41 35 30 30 30 |ant of the A5000|
00005bb0 29 0a 0a 20 20 20 4e 65 77 65 72 20 52 69 73 63 |).. Newer Risc|
00005bc0 50 43 20 6d 61 63 68 69 6e 65 73 20 68 61 76 65 |PC machines have|
00005bd0 20 61 6e 20 6f 66 66 69 63 69 61 6c 20 75 70 70 | an official upp|
00005be0 65 72 20 6c 69 6d 69 74 20 6f 66 20 32 35 36 20 |er limit of 256 |
00005bf0 4d 62 2c 20 70 6c 75 73 20 32 0a 20 20 20 4d 62 |Mb, plus 2. Mb|
00005c00 20 6f 66 20 56 52 41 4d 2c 20 6f 6e 20 61 6c 6c | of VRAM, on all|
00005c10 20 6d 6f 64 65 6c 73 2e 20 48 6f 77 65 76 65 72 | models. However|
00005c20 20 74 68 69 73 20 64 6f 65 73 20 72 65 71 75 69 | this does requi|
00005c30 72 65 20 79 6f 75 20 75 73 69 6e 67 20 31 32 38 |re you using 128|
00005c40 20 4d 62 0a 20 20 20 53 49 4d 4d 53 20 77 68 69 | Mb. SIMMS whi|
00005c50 63 68 20 61 72 65 20 63 75 72 72 65 6e 74 6c 79 |ch are currently|
00005c60 20 6e 6f 74 20 76 65 72 79 20 63 6f 6d 6d 6f 6e | not very common|
00005c70 2e 2e 2e 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |.....-----------|
00005c80 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00005cc0 2d 0a 0a 32 2e 32 29 20 57 68 61 74 20 69 73 20 |-..2.2) What is |
00005cd0 61 20 73 65 63 6f 6e 64 20 70 72 6f 63 65 73 73 |a second process|
00005ce0 6f 72 20 61 6e 64 20 77 68 61 74 20 73 65 63 6f |or and what seco|
00005cf0 6e 64 20 70 72 6f 63 65 73 73 6f 72 73 20 61 72 |nd processors ar|
00005d00 65 20 74 68 65 72 65 3f 0a 0a 20 20 20 41 20 73 |e there?.. A s|
00005d10 65 63 6f 6e 64 20 70 72 6f 63 65 73 73 6f 72 20 |econd processor |
00005d20 77 61 73 20 74 68 65 20 67 65 6e 65 72 69 63 20 |was the generic |
00005d30 6e 61 6d 65 20 66 6f 72 20 61 20 72 61 6e 67 65 |name for a range|
00005d40 20 6f 66 20 70 61 72 61 73 69 74 65 0a 70 72 6f | of parasite.pro|
00005d50 63 65 73 73 6f 72 73 20 74 68 61 74 20 63 6f 75 |cessors that cou|
00005d60 6c 64 20 62 65 20 6c 69 6e 6b 65 64 20 74 6f 20 |ld be linked to |
00005d70 41 63 6f 72 6e 27 73 20 38 20 62 69 74 20 6d 61 |Acorn's 8 bit ma|
00005d80 63 68 69 6e 65 73 20 76 69 61 20 77 68 61 74 20 |chines via what |
00005d90 77 61 73 0a 63 61 6c 6c 65 64 20 74 68 65 20 60 |was.called the `|
00005da0 54 75 62 65 60 20 69 6e 74 65 72 66 61 63 65 2e |Tube` interface.|
00005db0 20 42 61 73 69 63 61 6c 6c 79 20 74 68 65 20 68 | Basically the h|
00005dc0 6f 73 74 20 6d 61 63 68 69 6e 65 20 62 65 63 61 |ost machine beca|
00005dd0 6d 65 20 64 65 64 69 63 61 74 65 64 20 74 6f 0a |me dedicated to.|
00005de0 68 61 6e 64 6c 69 6e 67 20 74 68 65 20 49 6e 70 |handling the Inp|
00005df0 75 74 20 61 6e 64 20 4f 75 74 70 75 74 20 77 68 |ut and Output wh|
00005e00 69 6c 65 20 74 68 65 20 73 65 63 6f 6e 64 20 70 |ile the second p|
00005e10 72 6f 63 65 73 73 6f 72 20 77 6f 75 6c 64 20 64 |rocessor would d|
00005e20 6f 20 74 68 65 20 68 69 67 68 65 72 0a 6c 65 76 |o the higher.lev|
00005e30 65 6c 20 66 75 6e 63 74 69 6f 6e 73 20 28 6c 69 |el functions (li|
00005e40 6b 65 20 72 75 6e 6e 69 6e 67 20 79 6f 75 72 20 |ke running your |
00005e50 70 72 6f 67 72 61 6d 73 29 2e 20 54 68 65 20 73 |programs). The s|
00005e60 65 63 6f 6e 64 20 70 72 6f 63 65 73 73 6f 72 20 |econd processor |
00005e70 72 61 6e 0a 61 73 79 6e 63 72 6f 6e 6f 75 73 6c |ran.asyncronousl|
00005e80 79 20 74 6f 20 74 68 65 20 68 6f 73 74 20 70 72 |y to the host pr|
00005e90 6f 63 65 73 73 6f 72 20 61 6c 6c 6f 77 69 6e 67 |ocessor allowing|
00005ea0 20 69 6e 63 72 65 64 69 62 6c 65 20 69 6e 63 72 | incredible incr|
00005eb0 65 61 73 65 73 20 69 6e 0a 65 78 65 63 75 74 69 |eases in.executi|
00005ec0 6f 6e 20 73 70 65 65 64 20 66 6f 72 20 70 72 6f |on speed for pro|
00005ed0 67 72 61 6d 73 2e 20 41 20 77 69 64 65 20 72 61 |grams. A wide ra|
00005ee0 6e 67 65 20 6f 66 20 70 72 6f 63 65 73 73 6f 72 |nge of processor|
00005ef0 73 20 77 65 72 65 20 73 75 70 70 6f 72 74 65 64 |s were supported|
00005f00 20 74 68 69 73 0a 77 61 79 20 61 6c 6c 6f 77 69 | this.way allowi|
00005f10 6e 67 20 41 63 6f 72 6e 27 73 20 65 69 67 68 74 |ng Acorn's eight|
00005f20 20 62 69 74 20 72 61 6e 67 65 20 6f 66 20 6d 61 | bit range of ma|
00005f30 63 68 69 6e 65 73 20 74 6f 20 72 65 6d 61 69 6e |chines to remain|
00005f40 20 76 69 61 62 6c 65 20 61 6e 64 20 75 73 65 66 | viable and usef|
00005f50 75 6c 0a 66 6f 72 20 6d 75 63 68 20 6c 6f 6e 67 |ul.for much long|
00005f60 65 72 20 74 68 61 6e 20 74 68 65 69 72 20 74 65 |er than their te|
00005f70 63 68 6e 6f 6c 6f 67 79 20 77 6f 75 6c 64 20 73 |chnology would s|
00005f80 75 67 67 65 73 74 2e 0a 0a 20 20 20 54 68 65 20 |uggest... The |
00005f90 53 65 63 6f 6e 64 20 50 72 6f 63 65 73 73 6f 72 |Second Processor|
00005fa0 73 20 74 68 61 74 20 65 78 69 73 74 65 64 20 61 |s that existed a|
00005fb0 72 65 20 3a 2d 0a 0a 5a 38 30 20 73 65 63 6f 6e |re :-..Z80 secon|
00005fc0 64 20 70 72 6f 63 65 73 73 6f 72 2e 0a 36 20 4d |d processor..6 M|
00005fd0 48 7a 20 52 41 4d 2e 0a 36 34 6b 20 4d 65 6d 6f |Hz RAM..64k Memo|
00005fe0 72 79 2e 0a 43 50 2f 4d 20 4f 53 2e 0a 45 78 74 |ry..CP/M OS..Ext|
00005ff0 65 72 6e 61 6c 20 73 65 63 6f 6e 64 20 70 72 6f |ernal second pro|
00006000 63 65 73 73 6f 72 20 66 6f 72 20 61 6c 6c 20 65 |cessor for all e|
00006010 69 67 68 74 20 62 69 74 20 6d 61 63 68 69 6e 65 |ight bit machine|
00006020 73 2e 0a 0a 36 35 30 32 20 73 65 63 6f 6e 64 20 |s...6502 second |
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*
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00007100 6e 20 62 65 20 75 73 65 64 20 69 6e 20 36 34 30 |n be used in 640|
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00007120 0a 20 20 41 33 30 30 20 73 65 72 69 65 73 2e 0a |. A300 series..|
00007130 20 20 20 20 20 20 4d 6f 73 74 2c 20 69 66 20 6e | Most, if n|
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00007160 68 65 20 63 69 72 63 75 69 74 20 62 6f 61 72 64 |he circuit board|
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00007190 6d 6f 64 65 20 63 6f 6e 74 69 6e 75 6f 75 73 6c |mode continuousl|
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000071d0 20 63 6f 6d 70 6f 73 69 74 65 20 50 43 20 56 47 | composite PC VG|
000071e0 41 20 6d 6f 6e 69 74 6f 72 73 20 63 61 6e 20 62 |A monitors can b|
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00007200 50 43 20 73 65 72 69 65 73 2e 0a 20 20 20 20 20 |PC series.. |
00007210 20 54 68 69 73 20 68 61 73 20 61 20 2a 76 65 72 | This has a *ver|
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00007230 20 69 6e 20 69 74 20 61 6e 64 20 69 73 20 71 75 | in it and is qu|
00007240 69 74 65 20 63 61 70 61 62 6c 65 20 6f 66 20 64 |ite capable of d|
00007250 72 69 76 69 6e 67 0a 20 20 20 20 20 20 50 43 20 |riving. PC |
00007260 6d 6f 6e 69 74 6f 72 73 20 77 69 74 68 20 6e 6f |monitors with no|
00007270 20 74 72 6f 75 62 6c 65 2e 0a 0a 20 20 20 48 6f | trouble... Ho|
00007280 77 65 76 65 72 20 74 6f 20 63 6f 6e 6e 65 63 74 |wever to connect|
00007290 20 61 6e 20 6f 6c 64 65 72 20 6d 61 63 68 69 6e | an older machin|
000072a0 65 20 28 41 33 30 30 30 2c 41 33 30 30 2c 34 30 |e (A3000,A300,40|
000072b0 30 20 73 65 72 69 65 73 29 20 74 6f 20 61 20 56 |0 series) to a V|
000072c0 47 41 0a 6d 6f 6e 69 74 6f 72 2c 20 79 6f 75 20 |GA.monitor, you |
000072d0 77 69 6c 6c 20 6e 65 65 64 20 61 20 6d 65 61 6e |will need a mean|
000072e0 73 20 6f 66 20 63 6f 6e 6e 65 63 74 69 6e 67 20 |s of connecting |
000072f0 74 68 65 20 73 74 61 6e 64 61 72 64 20 31 35 2d |the standard 15-|
00007300 70 69 6e 20 56 47 41 20 70 6c 75 67 20 74 6f 0a |pin VGA plug to.|
00007310 74 68 65 20 39 2d 70 69 6e 20 73 6f 63 6b 65 74 |the 9-pin socket|
00007320 20 69 6e 20 74 68 65 20 63 6f 6d 70 75 74 65 72 | in the computer|
00007330 2e 20 41 20 6e 75 6d 62 65 72 20 6f 66 20 63 6f |. A number of co|
00007340 6d 70 61 6e 69 65 73 20 73 65 6c 6c 20 27 63 6f |mpanies sell 'co|
00007350 6e 76 65 72 74 65 72 73 27 2c 0a 62 75 74 20 61 |nverters',.but a|
00007360 6c 6c 20 74 68 69 73 20 62 6f 69 6c 73 20 64 6f |ll this boils do|
00007370 77 6e 20 74 6f 20 69 73 20 61 20 6c 65 61 64 20 |wn to is a lead |
00007380 77 69 74 68 20 74 68 65 20 66 6f 6c 6c 6f 77 69 |with the followi|
00007390 6e 67 20 63 6f 6e 66 69 67 75 72 61 74 69 6f 6e |ng configuration|
000073a0 20 3a 2d 0a 0a 20 20 20 20 2e 2d 2d 2d 2d 2d 2d | :-.. .------|
000073b0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
000073c0 2d 2d 2e 20 20 20 20 56 47 41 20 31 35 2d 70 69 |--. VGA 15-pi|
000073d0 6e 20 73 6f 63 6b 65 74 0a 20 20 20 20 5c 20 20 |n socket. \ |
000073e0 20 20 31 20 20 20 32 20 20 20 33 20 20 20 34 20 | 1 2 3 4 |
000073f0 20 20 35 20 20 20 2f 0a 20 20 20 20 20 5c 20 36 | 5 /. \ 6|
00007400 20 20 20 37 20 20 20 38 20 20 20 39 20 20 31 30 | 7 8 9 10|
00007410 20 20 20 20 2f 0a 20 20 20 20 20 20 5c 20 31 31 | /. \ 11|
00007420 20 20 31 32 20 20 31 33 20 20 31 34 20 20 31 35 | 12 13 14 15|
00007430 20 2f 0a 20 20 20 20 20 20 20 27 2d 2d 2d 2d 2d | /. '-----|
00007440 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 27 0a 0a |-------------'..|
00007450 20 20 20 20 2e 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | .-----------|
00007460 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2e 20 20 |-------------. |
00007470 20 20 41 72 63 20 39 2d 70 69 6e 20 70 6c 75 67 | Arc 9-pin plug|
00007480 0a 20 20 20 20 5c 20 20 20 20 31 20 20 20 32 20 |. \ 1 2 |
00007490 20 20 33 20 20 20 34 20 20 20 35 20 20 20 2f 0a | 3 4 5 /.|
000074a0 20 20 20 20 20 5c 20 20 20 20 20 20 20 20 20 20 | \ |
000074b0 20 20 20 20 20 20 20 20 20 20 20 20 2f 0a 20 20 | /. |
000074c0 20 20 20 20 5c 20 20 20 20 36 20 20 20 37 20 20 | \ 6 7 |
000074d0 20 38 20 20 20 39 20 20 20 2f 0a 20 20 20 20 20 | 8 9 /. |
000074e0 20 20 27 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | '-------------|
000074f0 2d 2d 2d 2d 2d 27 0a 0a 53 69 67 6e 61 6c 20 20 |-----'..Signal |
00007500 20 20 20 20 20 20 20 20 56 47 41 20 70 69 6e 20 | VGA pin |
00007510 20 20 20 20 20 20 20 20 41 72 63 20 70 69 6e 0a | Arc pin.|
00007520 0a 47 6e 64 20 20 20 20 20 20 20 20 20 20 20 20 |.Gnd |
00007530 20 31 30 20 20 20 20 20 20 20 20 20 20 20 20 20 | 10 |
00007540 20 39 0a 52 65 64 20 20 20 20 20 20 20 20 20 20 | 9.Red |
00007550 20 20 20 31 20 20 20 20 20 20 20 20 20 20 20 20 | 1 |
00007560 20 20 20 31 0a 47 72 65 65 6e 20 20 20 20 20 20 | 1.Green |
00007570 20 20 20 20 20 32 20 20 20 20 20 20 20 20 20 20 | 2 |
00007580 20 20 20 20 20 32 0a 42 6c 75 65 20 20 20 20 20 | 2.Blue |
00007590 20 20 20 20 20 20 20 33 20 20 20 20 20 20 20 20 | 3 |
000075a0 20 20 20 20 20 20 20 33 0a 52 20 67 6e 64 20 20 | 3.R gnd |
000075b0 20 20 20 20 20 20 20 20 20 36 20 20 20 20 20 20 | 6 |
000075c0 20 20 20 20 20 20 20 20 20 36 0a 47 20 67 6e 64 | 6.G gnd|
000075d0 20 20 20 20 20 20 20 20 20 20 20 37 20 20 20 20 | 7 |
000075e0 20 20 20 20 20 20 20 20 20 20 20 37 0a 42 20 67 | 7.B g|
000075f0 6e 64 20 20 20 20 20 20 20 20 20 20 20 38 20 20 |nd 8 |
00007600 20 20 20 20 20 20 20 20 20 20 20 20 20 38 0a 48 | 8.H|
00007610 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 31 | 1|
00007620 33 20 20 20 20 20 20 20 20 20 20 20 20 20 20 34 |3 4|
00007630 0a 56 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |.V |
00007640 20 31 34 20 20 20 20 20 20 20 20 20 20 20 20 20 | 14 |
00007650 20 35 0a 0a 20 20 49 6e 20 63 6f 6e 63 6c 75 73 | 5.. In conclus|
00007660 69 6f 6e 2c 20 61 70 61 72 74 20 66 72 6f 6d 20 |ion, apart from |
00007670 74 68 65 20 41 35 30 30 30 20 61 6e 64 20 6e 65 |the A5000 and ne|
00007680 77 65 72 20 6d 61 63 68 69 6e 65 73 2c 20 6e 6f |wer machines, no|
00007690 20 63 6f 6d 70 75 74 65 72 20 61 73 0a 73 74 61 | computer as.sta|
000076a0 6e 64 61 72 64 20 63 61 6e 20 64 72 69 76 65 20 |ndard can drive |
000076b0 65 69 74 68 65 72 20 61 20 66 69 78 65 64 20 66 |either a fixed f|
000076c0 72 65 71 75 65 6e 63 79 20 6f 72 20 6d 75 6c 74 |requency or mult|
000076d0 69 2d 66 72 65 71 75 65 6e 63 79 20 50 43 20 6d |i-frequency PC m|
000076e0 6f 6e 69 74 6f 72 20 69 6e 0a 61 6c 6c 20 6f 66 |onitor in.all of|
000076f0 20 74 68 65 20 41 72 63 68 69 6d 65 64 65 73 20 | the Archimedes |
00007700 6d 6f 64 65 73 20 73 61 74 69 73 66 61 63 74 6f |modes satisfacto|
00007710 72 69 6c 79 2e 20 48 6f 77 65 76 65 72 20 56 49 |rily. However VI|
00007720 44 43 20 65 6e 68 61 6e 63 65 72 20 62 6f 61 72 |DC enhancer boar|
00007730 64 73 20 63 61 6e 0a 62 65 20 62 6f 75 67 68 74 |ds can.be bought|
00007740 20 74 6f 20 75 70 67 72 61 64 65 20 61 6e 20 41 | to upgrade an A|
00007750 72 63 68 69 6d 65 64 65 73 20 73 65 72 69 65 73 |rchimedes series|
00007760 20 6d 61 63 68 69 6e 65 20 74 6f 20 68 61 6e 64 | machine to hand|
00007770 6c 65 20 74 68 65 20 6e 65 65 64 65 64 0a 74 69 |le the needed.ti|
00007780 6d 69 6e 67 20 61 6e 64 20 73 69 67 6e 61 6c 73 |ming and signals|
00007790 2e 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |...-------------|
000077a0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
000077d0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a |---------------.|
000077e0 0a 32 2e 34 29 20 41 72 65 20 74 68 65 72 65 20 |.2.4) Are there |
000077f0 61 6e 79 20 63 61 72 64 73 20 66 6f 72 20 49 42 |any cards for IB|
00007800 4d 20 50 43 20 6f 72 20 63 6f 6d 70 61 74 61 62 |M PC or compatab|
00007810 6c 65 20 6d 61 63 68 69 6e 65 73 20 74 68 61 74 |le machines that|
00007820 20 41 63 6f 72 6e 20 68 61 76 65 0a 20 20 20 20 | Acorn have. |
00007830 20 70 72 6f 64 75 63 65 64 3f 0a 0a 20 20 20 59 | produced?.. Y|
00007840 65 73 2e 20 54 68 72 65 65 20 63 61 72 64 73 20 |es. Three cards |
00007850 69 6e 20 74 6f 74 61 6c 20 3a 2d 0a 0a 53 70 72 |in total :-..Spr|
00007860 69 6e 67 62 6f 61 72 64 2e 0a 20 20 41 52 4d 20 |ingboard.. ARM |
00007870 32 20 70 72 6f 63 65 73 73 6f 72 2e 0a 20 20 34 |2 processor.. 4|
00007880 30 39 36 6b 20 4d 65 6d 6f 72 79 2e 0a 20 20 38 |096k Memory.. 8|
00007890 20 4d 48 7a 20 52 41 4d 2e 0a 20 20 42 72 61 7a | MHz RAM.. Braz|
000078a0 69 6c 20 4f 53 2e 0a 0a 50 43 20 41 52 4d 20 64 |il OS...PC ARM d|
000078b0 65 76 65 6c 6f 70 6d 65 6e 74 20 73 79 73 74 65 |evelopment syste|
000078c0 6d 2e 0a 20 20 50 72 65 63 75 72 73 6f 72 20 74 |m.. Precursor t|
000078d0 6f 20 53 70 72 69 6e 67 62 6f 61 72 64 2e 20 48 |o Springboard. H|
000078e0 61 72 64 77 61 72 65 20 66 75 6e 63 74 69 6f 6e |ardware function|
000078f0 61 6c 6c 79 20 69 64 65 6e 74 69 63 61 6c 2e 0a |ally identical..|
00007900 0a 45 63 6f 6c 69 6e 6b 2e 0a 20 20 41 6e 20 65 |.Ecolink.. An e|
00007910 63 6f 6e 65 74 20 6c 69 6e 6b 20 63 61 72 64 20 |conet link card |
00007920 66 6f 72 20 74 68 65 20 50 43 2e 0a 0a 2d 2d 2d |for the PC...---|
00007930 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00007970 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 32 2e 35 29 20 |---------..2.5) |
00007980 57 68 61 74 20 69 73 20 61 20 56 49 44 43 20 65 |What is a VIDC e|
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000079a0 6e 65 65 64 20 6f 6e 65 20 66 6f 72 20 6d 79 20 |need one for my |
000079b0 6e 65 77 20 6d 75 6c 74 69 73 79 6e 63 20 6d 6f |new multisync mo|
000079c0 6e 69 74 6f 72 3f 0a 0a 20 20 20 41 20 56 49 44 |nitor?.. A VID|
000079d0 43 20 65 6e 68 61 6e 63 65 72 20 69 73 20 62 61 |C enhancer is ba|
000079e0 73 69 63 61 6c 6c 79 20 61 20 63 6c 6f 63 6b 20 |sically a clock |
000079f0 63 68 61 6e 67 65 20 66 6f 72 20 79 6f 75 72 20 |change for your |
00007a00 56 49 44 43 2e 20 4d 6f 73 74 20 41 72 63 73 20 |VIDC. Most Arcs |
00007a10 28 62 61 72 0a 74 68 65 20 41 35 34 30 20 61 6e |(bar.the A540 an|
00007a20 64 20 6e 65 77 65 72 20 6d 61 63 68 69 6e 65 73 |d newer machines|
00007a30 29 20 68 61 76 65 20 32 34 20 4d 48 7a 20 56 49 |) have 24 MHz VI|
00007a40 44 43 20 63 68 69 70 73 20 69 6e 73 74 61 6c 6c |DC chips install|
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00007a60 44 43 20 65 6e 68 61 6e 63 65 72 20 69 6e 63 72 |DC enhancer incr|
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00007a80 20 4d 48 7a 20 61 6c 6c 6f 77 69 6e 67 20 6d 75 | MHz allowing mu|
00007a90 63 68 20 68 69 67 68 65 72 20 72 65 73 6f 6c 75 |ch higher resolu|
00007aa0 74 69 6f 6e 0a 73 63 72 65 65 6e 20 6d 6f 64 65 |tion.screen mode|
00007ab0 73 20 74 6f 20 62 65 20 64 69 73 70 6c 61 79 65 |s to be displaye|
00007ac0 64 20 6f 6e 20 79 6f 75 72 20 41 72 63 2e 20 28 |d on your Arc. (|
00007ad0 38 30 30 78 36 30 30 78 31 36 20 6f 72 20 53 56 |800x600x16 or SV|
00007ae0 47 41 20 73 74 61 6e 64 61 72 64 0a 62 65 63 6f |GA standard.beco|
00007af0 6d 65 73 20 61 76 61 69 6c 61 62 6c 65 2e 29 20 |mes available.) |
00007b00 59 6f 75 20 64 6f 20 2a 6e 6f 74 2a 20 6e 65 65 |You do *not* nee|
00007b10 64 20 6f 6e 65 20 74 6f 20 75 73 65 20 61 20 4d |d one to use a M|
00007b20 75 6c 74 69 73 79 6e 63 20 6d 6f 6e 69 74 6f 72 |ultisync monitor|
00007b30 20 2d 20 74 68 65 0a 73 74 61 6e 64 61 72 64 20 | - the.standard |
00007b40 56 49 44 43 20 68 61 6e 64 6c 65 73 20 74 68 61 |VIDC handles tha|
00007b50 74 20 6a 75 73 74 20 66 69 6e 65 2e 20 48 6f 77 |t just fine. How|
00007b60 65 76 65 72 20 68 61 76 69 6e 67 20 61 20 56 49 |ever having a VI|
00007b70 44 43 20 65 6e 68 61 6e 63 65 72 20 69 73 20 6f |DC enhancer is o|
00007b80 6e 6c 79 0a 72 65 61 6c 6c 79 20 75 73 65 66 75 |nly.really usefu|
00007b90 6c 20 69 66 20 79 6f 75 20 64 6f 20 68 61 76 65 |l if you do have|
00007ba0 20 61 20 4d 75 6c 74 69 2d 73 79 6e 63 20 6d 6f | a Multi-sync mo|
00007bb0 6e 69 74 6f 72 2e 0a 0a 20 20 20 4e 6f 74 65 20 |nitor... Note |
00007bc0 61 20 56 49 44 43 20 65 6e 68 61 6e 63 65 72 20 |a VIDC enhancer |
00007bd0 69 73 20 75 6e 6e 65 63 63 65 73 61 72 79 20 61 |is unneccesary a|
00007be0 6e 64 20 69 6e 63 6f 6d 70 61 74 69 62 6c 65 20 |nd incompatible |
00007bf0 77 69 74 68 20 74 68 65 20 52 69 73 63 50 43 0a |with the RiscPC.|
00007c00 72 61 6e 67 65 20 6f 66 20 6d 61 63 68 69 6e 65 |range of machine|
00007c10 73 2e 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |s...------------|
00007c20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00007c60 0a 0a 32 2e 36 29 20 57 68 61 74 20 63 6f 6e 66 |..2.6) What conf|
00007c70 69 67 75 72 61 74 69 6f 6e 20 6f 66 20 73 65 72 |iguration of ser|
00007c80 69 61 6c 20 63 61 62 6c 65 20 73 68 6f 75 6c 64 |ial cable should|
00007c90 20 49 20 75 73 65 20 6f 6e 20 6d 79 20 6d 61 63 | I use on my mac|
00007ca0 68 69 6e 65 20 66 6f 72 20 6d 6f 64 65 6d 0a 20 |hine for modem. |
00007cb0 20 20 20 20 77 6f 72 6b 3f 0a 0a 20 20 20 48 65 | work?.. He|
00007cc0 72 65 20 66 6f 6c 6c 6f 77 73 20 61 20 64 69 61 |re follows a dia|
00007cd0 67 72 61 6d 20 6f 66 20 74 68 65 20 6e 65 63 65 |gram of the nece|
00007ce0 73 73 61 72 79 20 63 6f 6e 6e 65 63 74 69 6f 6e |ssary connection|
00007cf0 73 20 66 6f 72 20 63 6f 6d 6d 6f 6e 20 74 65 72 |s for common ter|
00007d00 6d 69 6e 61 6c 0a 70 72 6f 67 72 61 6d 73 20 74 |minal.programs t|
00007d10 6f 20 77 6f 72 6b 20 70 72 6f 70 65 72 6c 79 2e |o work properly.|
00007d20 20 54 68 65 79 20 61 72 65 20 61 73 20 66 61 72 | They are as far|
00007d30 20 61 73 20 49 20 6b 6e 6f 77 20 74 68 65 20 69 | as I know the i|
00007d40 6e 66 6f 72 6d 61 6c 20 73 74 61 6e 64 61 72 64 |nformal standard|
00007d50 0a 61 67 72 65 65 64 20 75 70 6f 6e 20 62 79 20 |.agreed upon by |
00007d60 63 6f 6d 6d 65 72 63 69 61 6c 20 63 6f 6d 6d 73 |commercial comms|
00007d70 20 73 6f 66 74 77 61 72 65 20 64 65 76 65 6c 6f | software develo|
00007d80 70 65 72 73 20 66 6f 72 20 74 68 65 20 41 72 63 |pers for the Arc|
00007d90 2e 0a 0a 20 20 20 50 69 6e 73 20 31 2c 20 34 2c |... Pins 1, 4,|
00007da0 20 61 6e 64 20 38 20 6d 75 73 74 20 62 65 20 63 | and 8 must be c|
00007db0 6f 6e 6e 65 63 74 65 64 20 74 6f 67 65 74 68 65 |onnected togethe|
00007dc0 72 20 69 6e 73 69 64 65 20 74 68 65 20 39 20 70 |r inside the 9 p|
00007dd0 69 6e 20 70 6c 75 67 2e 20 54 68 69 73 0a 69 73 |in plug. This.is|
00007de0 20 74 6f 20 61 76 6f 69 64 20 74 68 65 20 77 65 | to avoid the we|
00007df0 6c 6c 20 6b 6e 6f 77 6e 20 73 65 72 69 61 6c 20 |ll known serial |
00007e00 70 6f 72 74 20 63 68 69 70 20 62 75 67 73 2e 20 |port chip bugs. |
00007e10 54 68 65 20 6d 6f 64 65 6d 27 73 20 44 43 44 20 |The modem's DCD |
00007e20 28 44 61 74 61 0a 43 61 72 72 69 65 72 20 44 65 |(Data.Carrier De|
00007e30 74 65 63 74 29 20 73 69 67 6e 61 6c 20 68 61 73 |tect) signal has|
00007e40 20 62 65 65 6e 20 72 65 72 6f 75 74 65 64 20 74 | been rerouted t|
00007e50 6f 20 74 68 65 20 41 72 63 27 73 20 52 49 20 28 |o the Arc's RI (|
00007e60 52 69 6e 67 20 49 6e 64 69 63 61 74 6f 72 29 0a |Ring Indicator).|
00007e70 6d 6f 73 74 20 6d 6f 64 65 6d 73 20 62 72 6f 61 |most modems broa|
00007e80 64 63 61 73 74 20 61 20 73 6f 66 74 77 61 72 65 |dcast a software|
00007e90 20 52 49 4e 47 20 73 69 67 6e 61 6c 20 61 6e 79 | RING signal any|
00007ea0 77 61 79 2c 20 61 6e 64 20 65 76 65 6e 20 74 68 |way, and even th|
00007eb0 65 6e 20 69 74 27 73 20 6e 6f 74 0a 72 65 61 6c |en it's not.real|
00007ec0 6c 79 20 6e 65 63 65 73 73 61 72 79 20 74 6f 20 |ly necessary to |
00007ed0 64 65 74 65 63 74 20 69 74 20 66 6f 72 20 74 68 |detect it for th|
00007ee0 65 20 6d 6f 64 65 6d 20 74 6f 20 61 6e 73 77 65 |e modem to answe|
00007ef0 72 20 74 68 65 20 63 61 6c 6c 2e 0a 0a 20 41 72 |r the call... Ar|
00007f00 63 20 28 39 20 70 69 6e 29 20 20 20 20 20 20 20 |c (9 pin) |
00007f10 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4d | M|
00007f20 6f 64 65 6d 20 28 32 35 20 70 69 6e 29 0a 20 2d |odem (25 pin). -|
00007f30 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 20 20 20 20 20 20 |---------- |
00007f40 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00007f50 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a |--------------..|
00007f60 20 2b 2d 2d 2d 31 2d 2d 2d 44 43 44 0a 20 7c 0a | +---1---DCD. |.|
00007f70 20 7c 20 20 20 32 2d 2d 2d 52 78 44 2d 2d 2d 2d | | 2---RxD----|
00007f80 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00007f90 2d 2d 2d 2d 52 78 44 2d 2d 2d 2d 33 0a 20 7c 0a |----RxD----3. |.|
00007fa0 20 7c 20 20 20 33 2d 2d 2d 54 78 44 2d 2d 2d 2d | | 3---TxD----|
00007fb0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00007fc0 2d 2d 2d 2d 54 78 44 2d 2d 2d 2d 32 0a 20 7c 0a |----TxD----2. |.|
00007fd0 20 2b 2d 2d 2d 34 2d 2d 2d 44 54 52 2d 2d 2d 2d | +---4---DTR----|
00007fe0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00007ff0 2d 2d 2d 2d 44 54 52 2d 2d 2d 32 30 0a 20 7c 0a |----DTR---20. |.|
00008000 20 7c 20 20 20 35 2d 2d 2d 30 76 2d 2d 2d 2d 2d | | 5---0v-----|
00008010 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00008020 2d 2d 2d 2d 53 47 2d 2d 2d 2d 2d 37 0a 20 7c 0a |----SG-----7. |.|
00008030 20 7c 20 20 20 36 2d 2d 2d 44 53 52 2d 2d 2d 2d | | 6---DSR----|
00008040 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00008050 2d 2d 2d 2d 43 54 53 2d 2d 2d 2d 35 0a 20 7c 0a |----CTS----5. |.|
00008060 20 7c 20 20 20 37 2d 2d 2d 52 54 53 2d 2d 2d 2d | | 7---RTS----|
00008070 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00008080 2d 2d 2d 2d 52 54 53 2d 2d 2d 2d 34 0a 20 7c 0a |----RTS----4. |.|
00008090 20 2b 2d 2d 2d 38 2d 2d 2d 43 54 53 0a 0a 20 20 | +---8---CTS.. |
000080a0 20 20 20 39 2d 2d 2d 52 49 2d 2d 2d 2d 2d 2d 2d | 9---RI-------|
000080b0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
000080c0 2d 2d 44 43 44 2d 2d 2d 2d 38 0a 0a 20 20 20 4f |--DCD----8.. O|
000080d0 66 20 63 6f 75 72 73 65 20 79 6f 75 20 63 61 6e |f course you can|
000080e0 20 63 6f 6e 6e 65 63 74 20 74 68 65 20 4d 6f 64 | connect the Mod|
000080f0 65 6d 20 70 69 6e 20 32 30 20 74 6f 20 61 6e 79 |em pin 20 to any|
00008100 20 6f 6e 65 20 6f 66 20 70 69 6e 73 20 31 2c 20 | one of pins 1, |
00008110 34 2c 20 6f 72 20 38 0a 6f 6e 20 74 68 65 20 41 |4, or 8.on the A|
00008120 72 63 68 69 6d 65 64 65 73 20 70 6c 75 67 2c 20 |rchimedes plug, |
00008130 61 73 20 74 68 65 79 20 61 72 65 20 61 6c 6c 20 |as they are all |
00008140 63 6f 6e 6e 65 63 74 65 64 20 74 6f 67 65 74 68 |connected togeth|
00008150 65 72 20 61 6e 79 77 61 79 2e 0a 0a 20 20 20 43 |er anyway... C|
00008160 68 6f 63 6b 73 20 41 77 61 79 20 45 78 74 72 61 |hocks Away Extra|
00008170 20 4d 69 73 73 69 6f 6e 73 20 28 74 68 65 20 66 | Missions (the f|
00008180 6c 69 67 68 74 20 73 69 6d 75 6c 61 74 6f 72 20 |light simulator |
00008190 66 72 6f 6d 20 34 74 68 20 44 69 6d 65 6e 73 69 |from 4th Dimensi|
000081a0 6f 6e 29 0a 73 75 67 67 65 73 74 73 20 74 68 61 |on).suggests tha|
000081b0 74 20 74 68 65 20 73 65 72 69 61 6c 20 63 61 62 |t the serial cab|
000081c0 6c 65 20 62 65 20 77 69 72 65 64 20 61 73 20 61 |le be wired as a|
000081d0 62 6f 76 65 20 65 78 63 65 70 74 20 74 68 61 74 |bove except that|
000081e0 20 70 69 6e 73 20 31 2d 34 2d 36 20 61 72 65 0a | pins 1-4-6 are.|
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00008260 20 38 20 62 65 20 73 77 61 70 70 65 64 20 6f 76 | 8 be swapped ov|
00008270 65 72 20 61 74 20 74 68 65 20 41 72 63 27 73 20 |er at the Arc's |
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00008430 20 61 20 70 61 74 63 68 65 64 20 63 61 62 6c 65 | a patched cable|
00008440 20 6f 6e 20 74 68 65 73 65 20 60 66 69 78 65 64 | on these `fixed|
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00008490 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
000084d0 2d 2d 2d 2d 2d 2d 0a 0a 32 2e 37 29 20 48 6f 77 |------..2.7) How|
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00008740 20 4c 4b 33 29 2c 20 77 68 69 63 68 20 63 61 6e | LK3), which can|
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00008800 20 20 20 20 20 20 20 31 20 20 20 20 20 20 20 55 | 1 U|
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00008820 20 20 20 20 20 20 20 32 20 20 20 20 20 20 20 47 | 2 G|
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00008840 20 20 20 20 20 20 46 69 6c 74 65 72 65 64 20 4c | Filtered L|
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00008860 20 20 20 20 47 72 6f 75 6e 64 0a 20 20 20 20 20 | Ground. |
00008870 20 20 20 35 20 20 20 20 20 20 20 41 75 78 69 6c | 5 Auxil|
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00008890 20 20 20 36 20 20 20 20 20 20 20 47 72 6f 75 6e | 6 Groun|
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00008900 20 31 30 20 20 20 20 20 20 47 72 6f 75 6e 64 0a | 10 Ground.|
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000089e0 20 20 20 20 20 20 50 69 6e 20 32 20 2d 2d 3e 20 | Pin 2 --> |
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*
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00008ca0 20 43 61 6e 20 49 20 63 6f 6e 6e 65 63 74 20 61 | Can I connect a|
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00008ce0 61 76 65 20 61 6e 20 6f 6c 64 65 72 20 41 63 6f |ave an older Aco|
00008cf0 72 6e 20 6d 61 63 68 69 6e 65 20 77 69 74 68 20 |rn machine with |
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00008d30 65 20 77 69 72 69 6e 67 20 64 69 61 67 72 61 6d |e wiring diagram|
00008d40 20 3a 2d 0a 0a 0a 20 20 20 20 2e 2d 2d 2d 2d 2d | :-... .-----|
00008d50 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00008d60 2d 2d 2d 2e 20 20 20 20 41 72 63 20 39 2d 70 69 |---. Arc 9-pi|
00008d70 6e 20 70 6c 75 67 0a 20 20 20 20 5c 20 20 20 20 |n plug. \ |
00008d80 31 20 20 20 32 20 20 20 33 20 20 20 34 20 20 20 |1 2 3 4 |
00008d90 35 20 20 20 2f 0a 20 20 20 20 20 5c 20 20 20 20 |5 /. \ |
00008da0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00008db0 20 20 2f 0a 20 20 20 20 20 20 5c 20 20 20 20 36 | /. \ 6|
00008dc0 20 20 20 37 20 20 20 38 20 20 20 39 20 20 20 2f | 7 8 9 /|
00008dd0 20 43 61 73 65 0a 20 20 20 20 20 20 20 27 2d 2d | Case. '--|
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00008df0 27 0a 20 20 20 20 20 20 20 20 5f 5f 5f 5f 5f 5f |'. ______|
00008e00 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 0a |_______________.|
00008e10 20 20 20 20 20 20 20 7c 31 39 20 20 20 20 20 20 | |19 |
00008e20 20 20 20 20 20 20 20 20 20 20 20 20 31 7c 20 20 | 1| |
00008e30 20 20 53 43 41 52 54 20 32 31 2d 70 69 6e 20 70 | SCART 21-pin p|
00008e40 6c 75 67 0a 20 20 20 20 20 20 20 7c 20 7c 20 7c |lug. | | ||
00008e50 20 7c 20 7c 20 7c 20 7c 20 7c 20 7c 20 7c 20 7c | | | | | | | | ||
00008e60 20 7c 0a 20 20 20 20 20 20 2f 20 20 20 20 20 20 | |. / |
00008e70 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00008e80 7c 0a 20 20 20 20 20 2f 20 7c 20 20 7c 20 7c 20 ||. / | | | |
00008e90 7c 20 7c 20 7c 20 7c 20 7c 20 7c 20 7c 20 20 7c || | | | | | | ||
00008ea0 0a 20 20 20 20 2f 5f 5f 5f 32 30 5f 5f 5f 5f 5f |. /___20_____|
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00008f00 65 63 74 6f 72 20 6f 72 20 61 20 50 65 72 69 2d |ector or a Peri-|
00008f10 54 65 6c 65 76 69 73 69 6f 6e 0a 63 6f 6e 6e 65 |Television.conne|
00008f20 63 74 6f 72 2e 0a 0a 20 20 20 20 20 20 20 20 20 |ctor... |
00008f30 20 20 20 20 20 20 20 41 72 63 20 20 20 20 20 20 | Arc |
00008f40 20 20 20 20 20 20 20 53 43 41 52 54 0a 0a 43 61 | SCART..Ca|
00008f50 73 65 20 20 20 20 20 20 20 20 20 20 20 20 7c 20 |se | |
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00008f70 20 20 20 20 20 20 20 20 20 20 20 20 20 20 43 61 | Ca|
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00008fa0 2d 2d 20 31 35 20 20 20 20 20 20 20 20 20 20 20 |-- 15 |
00008fb0 20 20 20 52 65 64 0a 47 72 65 65 6e 20 20 20 20 | Red.Green |
00008fc0 20 20 20 20 20 20 20 32 20 2d 2d 2d 2d 2d 2d 2d | 2 -------|
00008fd0 2d 2d 2d 2d 2d 2d 20 31 31 20 20 20 20 20 20 20 |------ 11 |
00008fe0 20 20 20 20 20 20 20 47 72 65 65 6e 0a 42 6c 75 | Green.Blu|
00008ff0 65 20 20 20 20 20 20 20 20 20 20 20 20 33 20 2d |e 3 -|
00009000 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 20 37 20 20 |------------ 7 |
00009010 20 20 20 20 20 20 20 20 20 20 20 20 20 42 6c 75 | Blu|
00009020 65 0a 43 53 59 4e 43 20 20 20 20 20 20 20 20 20 |e.CSYNC |
00009030 20 20 34 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | 4 ------------|
00009040 2d 20 32 30 20 20 20 20 20 20 20 20 20 20 20 20 |- 20 |
00009050 20 20 43 6f 6d 70 6f 73 69 74 65 20 76 69 64 65 | Composite vide|
00009060 6f 20 69 6e 70 75 74 0a 47 72 6f 75 6e 64 20 28 |o input.Ground (|
00009070 30 56 29 20 20 20 20 20 36 20 2d 2b 2d 2d 2d 2d |0V) 6 -+----|
00009080 2d 2d 2d 2d 2d 2b 2d 20 31 33 20 20 20 20 20 20 |-----+- 13 |
00009090 20 20 20 20 20 20 20 20 52 65 64 20 67 72 6f 75 | Red grou|
000090a0 6e 64 0a 47 72 6f 75 6e 64 20 28 30 56 29 20 20 |nd.Ground (0V) |
000090b0 20 20 20 37 20 2d 2b 20 20 20 20 20 20 20 20 20 | 7 -+ |
000090c0 2b 2d 20 39 20 20 20 20 20 20 20 20 20 20 20 20 |+- 9 |
000090d0 20 20 20 47 72 65 65 6e 20 67 72 6f 75 6e 64 0a | Green ground.|
000090e0 47 72 6f 75 6e 64 20 28 30 56 29 20 20 20 20 20 |Ground (0V) |
000090f0 38 20 2d 2b 20 20 20 20 20 20 20 20 20 2b 2d 20 |8 -+ +- |
00009100 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |5 |
00009110 42 6c 75 65 20 67 72 6f 75 6e 64 0a 47 72 6f 75 |Blue ground.Grou|
00009120 6e 64 20 28 30 56 29 20 20 20 20 20 39 20 2d 2b |nd (0V) 9 -+|
00009130 20 20 20 20 20 20 20 20 20 2b 2d 20 31 33 20 20 | +- 13 |
00009140 20 20 20 20 20 20 20 20 20 20 20 20 43 56 42 53 | CVBS|
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00009160 64 65 61 6c 6c 79 20 65 61 63 68 20 67 72 6f 75 |deally each grou|
00009170 6e 64 20 77 69 72 65 20 73 68 6f 75 6c 64 20 62 |nd wire should b|
00009180 65 20 6c 69 6e 6b 65 64 20 74 6f 20 61 20 73 65 |e linked to a se|
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000091a0 0a 20 20 20 49 66 20 79 6f 75 20 68 61 76 65 20 |. If you have |
000091b0 61 20 6e 65 77 65 72 20 41 63 6f 72 6e 20 6d 61 |a newer Acorn ma|
000091c0 63 68 69 6e 65 2c 20 77 69 74 68 20 74 68 65 20 |chine, with the |
000091d0 31 35 20 70 69 6e 20 68 69 67 68 20 64 65 6e 73 |15 pin high dens|
000091e0 69 74 79 20 76 69 64 65 6f 0a 73 6f 63 6b 65 74 |ity video.socket|
000091f0 20 74 68 65 6e 20 49 20 61 6d 20 63 75 72 72 65 | then I am curre|
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00009280 61 6c 20 63 61 72 65 20 6d 75 73 74 20 62 65 20 |al care must be |
00009290 74 61 6b 65 6e 20 77 68 65 6e 20 64 6f 69 6e 67 |taken when doing|
000092a0 20 74 68 69 73 20 70 72 6f 63 65 64 75 72 65 2e | this procedure.|
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000092f0 64 20 61 6e 64 20 75 6e 70 6c 75 67 67 69 6e 67 |d and unplugging|
00009300 2f 70 6c 75 67 67 69 6e 67 0a 63 61 62 6c 65 73 |/plugging.cables|
00009310 20 66 72 6f 6d 20 74 68 65 20 76 69 64 65 6f 20 | from the video |
00009320 73 6f 63 6b 65 74 20 77 68 69 6c 65 20 74 68 65 |socket while the|
00009330 20 6d 61 63 68 69 6e 65 20 69 73 20 74 75 72 6e | machine is turn|
00009340 65 64 20 6f 6e 20 63 61 6e 20 63 61 75 73 65 0a |ed on can cause.|
00009350 64 61 6d 61 67 65 20 74 6f 20 74 68 65 20 76 69 |damage to the vi|
00009360 64 65 6f 20 63 69 72 63 75 74 72 79 2e 0a 0a 2d |deo circutry...-|
00009370 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
000093b0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 53 65 63 74 |-----------.Sect|
000093c0 69 6f 6e 20 33 3a 20 43 6f 6e 66 69 67 75 72 61 |ion 3: Configura|
000093d0 74 69 6f 6e 2e 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |tion..----------|
000093e0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00009420 2d 2d 0a 0a 33 2e 31 29 20 57 68 61 74 20 69 73 |--..3.1) What is|
00009430 20 41 44 46 53 42 75 66 66 65 72 73 20 61 6e 64 | ADFSBuffers and|
00009440 20 77 68 61 74 20 69 73 20 74 68 65 20 62 65 73 | what is the bes|
00009450 74 20 73 65 74 74 69 6e 67 20 66 6f 72 20 69 74 |t setting for it|
00009460 3f 0a 0a 20 20 20 41 44 46 53 42 75 66 66 65 72 |?.. ADFSBuffer|
00009470 73 20 61 72 65 20 52 65 61 64 20 41 68 65 61 64 |s are Read Ahead|
00009480 20 61 6e 64 20 57 72 69 74 65 20 42 65 68 69 6e | and Write Behin|
00009490 64 20 62 75 66 66 65 72 73 20 66 6f 72 20 41 44 |d buffers for AD|
000094a0 46 53 20 6f 6e 20 79 6f 75 72 0a 41 72 63 68 69 |FS on your.Archi|
000094b0 6d 65 64 65 73 2e 20 54 68 65 73 65 20 61 72 65 |medes. These are|
000094c0 20 64 65 73 69 67 6e 65 64 20 74 6f 20 69 6d 70 | designed to imp|
000094d0 72 6f 76 65 20 74 68 65 20 73 70 65 65 64 20 6f |rove the speed o|
000094e0 66 20 66 69 6c 69 6e 67 20 6f 70 65 72 61 74 69 |f filing operati|
000094f0 6f 6e 73 20 62 79 0a 64 6f 69 6e 67 20 77 6f 72 |ons by.doing wor|
00009500 6b 20 61 74 20 6f 70 74 69 6d 75 6d 20 74 69 6d |k at optimum tim|
00009510 65 73 2e 20 54 68 65 72 65 20 61 72 65 20 73 6f |es. There are so|
00009520 6d 65 20 73 69 64 65 20 65 66 66 65 63 74 73 20 |me side effects |
00009530 6f 66 20 75 73 69 6e 67 20 74 68 65 6d 0a 74 68 |of using them.th|
00009540 6f 75 67 68 2e 20 57 68 65 6e 20 61 63 74 69 76 |ough. When activ|
00009550 65 20 75 6e 64 65 72 20 52 49 53 43 20 4f 53 20 |e under RISC OS |
00009560 76 32 2e 30 30 20 61 6e 64 20 76 32 2e 30 31 20 |v2.00 and v2.01 |
00009570 64 69 73 63 73 20 2a 6d 75 73 74 2a 20 62 65 20 |discs *must* be |
00009580 64 69 73 6d 6f 75 6e 74 65 64 0a 62 65 66 6f 72 |dismounted.befor|
00009590 65 20 62 65 69 6e 67 20 72 65 6d 6f 76 65 64 20 |e being removed |
000095a0 66 72 6f 6d 20 74 68 65 20 66 6c 6f 70 70 79 20 |from the floppy |
000095b0 64 72 69 76 65 2e 20 46 61 69 6c 75 72 65 20 74 |drive. Failure t|
000095c0 6f 20 64 6f 20 73 6f 20 72 65 73 75 6c 74 73 20 |o do so results |
000095d0 69 6e 20 74 68 65 0a 64 72 65 61 64 65 64 20 27 |in the.dreaded '|
000095e0 46 69 6c 65 43 6f 72 65 20 69 6e 20 75 73 65 2e |FileCore in use.|
000095f0 27 20 65 72 72 6f 72 2e 20 48 6f 77 65 76 65 72 |' error. However|
00009600 20 69 66 20 79 6f 75 20 61 72 65 20 70 72 65 70 | if you are prep|
00009610 61 72 65 64 20 74 6f 20 73 61 63 72 69 66 69 63 |ared to sacrific|
00009620 65 0a 74 68 65 20 73 70 65 65 64 20 69 6d 70 72 |e.the speed impr|
00009630 6f 76 65 6d 65 6e 74 20 74 68 65 79 20 67 69 76 |ovement they giv|
00009640 65 20 63 6f 6e 66 69 67 75 72 69 6e 67 20 74 68 |e configuring th|
00009650 65 20 62 75 66 66 65 72 73 20 74 6f 20 30 20 64 |e buffers to 0 d|
00009660 6f 65 73 20 72 65 6d 6f 76 65 0a 74 68 69 73 20 |oes remove.this |
00009670 70 72 6f 62 6c 65 6d 2e 20 28 4f 72 20 73 6f 20 |problem. (Or so |
00009680 49 20 61 6d 20 69 6e 66 6f 72 6d 65 64 2e 29 0a |I am informed.).|
00009690 0a 20 20 20 55 6e 64 65 72 20 52 49 53 43 20 4f |. Under RISC O|
000096a0 53 20 76 33 2e 30 30 2c 20 61 73 20 73 75 70 70 |S v3.00, as supp|
000096b0 6c 69 65 64 20 77 69 74 68 20 74 68 65 20 65 61 |lied with the ea|
000096c0 72 6c 79 20 41 35 30 30 30 20 6d 61 63 68 69 6e |rly A5000 machin|
000096d0 65 73 2c 20 74 68 65 73 65 0a 62 75 66 66 65 72 |es, these.buffer|
000096e0 73 20 67 65 6e 65 72 61 74 65 20 61 20 64 69 66 |s generate a dif|
000096f0 66 65 72 65 6e 74 20 70 72 6f 62 6c 65 6d 20 61 |ferent problem a|
00009700 6e 64 20 6d 75 73 74 20 2a 61 6c 77 61 79 73 2a |nd must *always*|
00009710 20 62 65 20 63 6f 6e 66 69 67 75 72 65 64 20 6f | be configured o|
00009720 66 66 2e 0a 46 61 69 6c 75 72 65 20 74 6f 20 64 |ff..Failure to d|
00009730 6f 20 73 6f 20 72 65 73 75 6c 74 73 20 69 6e 20 |o so results in |
00009740 73 70 75 72 69 6f 75 73 20 65 72 72 6f 72 73 20 |spurious errors |
00009750 77 68 65 6e 20 75 73 69 6e 67 20 74 68 65 20 48 |when using the H|
00009760 61 72 64 20 44 72 69 76 65 20 6f 6e 20 61 6e 0a |ard Drive on an.|
00009770 65 61 72 6c 79 20 41 35 30 30 30 2e 20 53 79 6d |early A5000. Sym|
00009780 70 74 6f 6d 73 20 69 6e 63 6c 75 64 65 20 72 65 |ptoms include re|
00009790 66 6f 72 6d 61 74 74 69 6e 67 20 6f 66 20 63 72 |formatting of cr|
000097a0 75 63 69 61 6c 20 73 65 63 74 6f 72 73 20 6f 66 |ucial sectors of|
000097b0 20 74 68 65 20 64 69 73 63 2c 0a 64 69 73 63 20 | the disc,.disc |
000097c0 61 64 64 72 65 73 73 20 65 72 72 6f 72 73 20 61 |address errors a|
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000097e0 72 65 20 74 6f 20 73 61 76 65 20 66 69 6c 65 73 |re to save files|
000097f0 20 74 6f 20 74 68 65 20 64 72 69 76 65 2e 20 53 | to the drive. S|
00009800 6f 20 77 68 65 6e 0a 75 73 69 6e 67 20 61 6e 20 |o when.using an |
00009810 41 35 30 30 30 20 77 69 74 68 20 52 49 53 43 20 |A5000 with RISC |
00009820 4f 53 20 33 2e 30 30 20 72 65 6d 65 6d 62 65 72 |OS 3.00 remember|
00009830 20 74 6f 20 63 6f 6e 66 69 67 75 72 65 20 74 68 | to configure th|
00009840 65 6d 20 6f 66 66 21 0a 0a 20 20 20 57 69 74 68 |em off!.. With|
00009850 20 52 49 53 43 20 4f 53 20 76 33 2e 31 30 20 61 | RISC OS v3.10 a|
00009860 6c 6c 20 6f 66 20 74 68 65 20 6f 6c 64 20 70 72 |ll of the old pr|
00009870 6f 62 6c 65 6d 73 20 68 61 76 65 20 62 65 65 6e |oblems have been|
00009880 20 63 75 72 65 64 20 77 69 74 68 20 61 20 6e 65 | cured with a ne|
00009890 77 20 6f 6e 65 0a 69 6e 74 72 6f 64 75 63 65 64 |w one.introduced|
000098a0 2e 20 4e 61 6d 65 6c 79 20 74 68 61 74 20 69 66 |. Namely that if|
000098b0 20 79 6f 75 20 68 61 76 65 20 6f 6e 6c 79 20 61 | you have only a|
000098c0 20 66 65 77 20 41 44 46 53 42 75 66 66 65 72 73 | few ADFSBuffers|
000098d0 20 63 6f 6e 66 69 67 75 72 65 64 20 61 6e 64 0a | configured and.|
000098e0 61 72 65 20 61 63 63 65 73 73 69 6e 67 20 74 68 |are accessing th|
000098f0 65 20 66 6c 6f 70 70 79 20 64 72 69 76 65 20 74 |e floppy drive t|
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00009910 20 63 61 6e 20 6f 63 63 61 73 69 6f 6e 61 6c 6c | can occasionall|
00009920 79 20 6c 6f 63 6b 20 75 70 0a 63 6f 6d 70 6c 65 |y lock up.comple|
00009930 74 65 6c 79 20 66 6f 72 20 79 6f 75 2e 20 49 74 |tely for you. It|
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00009950 79 20 76 61 6c 75 65 20 6f 66 20 41 44 46 53 42 |y value of ADFSB|
00009960 75 66 66 65 72 73 20 61 62 6f 76 65 20 38 20 63 |uffers above 8 c|
00009970 61 75 73 65 73 0a 74 68 61 74 20 70 72 6f 62 6c |auses.that probl|
00009980 65 6d 20 74 6f 20 62 65 20 6c 61 72 67 65 6c 79 |em to be largely|
00009990 20 61 6c 6c 65 76 69 61 74 65 64 20 28 72 65 61 | alleviated (rea|
000099a0 64 20 69 74 20 6f 6e 6c 79 20 6f 63 63 75 72 73 |d it only occurs|
000099b0 20 72 61 72 65 6c 79 20 61 74 20 74 68 65 73 65 | rarely at these|
000099c0 0a 73 65 74 74 69 6e 67 73 29 2e 20 53 6f 20 75 |.settings). So u|
000099d0 6e 64 65 72 20 52 49 53 43 20 4f 53 20 33 2e 31 |nder RISC OS 3.1|
000099e0 30 20 69 74 20 69 73 20 72 65 63 63 6f 6d 65 6e |0 it is reccomen|
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00009a20 73 20 61 20 70 61 74 63 68 20 6d 6f 64 75 6c 65 |s a patch module|
00009a30 20 61 76 61 69 6c 61 62 6c 65 2c 20 63 61 6c 6c | available, call|
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00009a70 63 74 20 79 6f 75 72 20 6c 6f 63 61 6c 20 64 65 |ct your local de|
00009a80 61 6c 65 72 20 66 6f 72 20 61 20 63 6f 70 79 20 |aler for a copy |
00009a90 6f 66 20 69 74 2e 0a 0a 20 20 20 52 49 53 43 20 |of it... RISC |
00009aa0 4f 53 20 33 2e 35 20 73 65 65 6d 73 20 74 6f 20 |OS 3.5 seems to |
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00009ac0 65 20 70 72 6f 62 6c 65 6d 73 20 63 75 72 65 64 |e problems cured|
00009ad0 20 61 6e 64 20 6e 6f 20 6e 65 77 20 62 75 67 73 | and no new bugs|
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00009b10 20 63 61 6e 20 62 65 20 6c 65 66 74 20 61 74 20 | can be left at |
00009b20 74 68 65 20 4f 53 27 73 0a 64 69 73 63 72 65 74 |the OS's.discret|
00009b30 69 6f 6e 20 61 6e 64 20 67 65 6e 65 72 61 6c 6c |ion and generall|
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00009b50 20 61 20 6e 75 6d 62 65 72 20 62 61 73 65 64 20 | a number based |
00009b60 6f 6e 20 74 68 65 20 61 6d 6f 75 6e 74 20 6f 66 |on the amount of|
00009b70 0a 6d 65 6d 6f 72 79 20 70 72 65 73 65 6e 74 20 |.memory present |
00009b80 69 6e 20 79 6f 75 72 20 52 69 73 63 50 43 2e 0a |in your RiscPC..|
00009b90 0a 20 20 20 41 73 20 66 6f 72 20 74 68 65 20 6f |. As for the o|
00009ba0 70 74 69 6d 75 6d 20 73 65 74 74 69 6e 67 73 20 |ptimum settings |
00009bb0 66 6f 72 20 41 44 46 53 42 75 66 66 65 72 73 2c |for ADFSBuffers,|
00009bc0 20 61 73 20 66 61 72 20 61 73 20 49 20 61 6d 20 | as far as I am |
00009bd0 61 77 61 72 65 20 6e 6f 20 6f 6e 65 0a 68 61 73 |aware no one.has|
00009be0 20 64 6f 6e 65 20 61 6e 79 20 73 70 65 65 64 20 | done any speed |
00009bf0 74 65 73 74 73 20 74 6f 20 73 65 65 20 77 68 61 |tests to see wha|
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00009c20 79 20 74 68 6f 75 67 68 0a 41 63 6f 72 6e 20 77 |y though.Acorn w|
00009c30 69 6c 6c 20 68 61 76 65 20 61 72 72 61 6e 67 65 |ill have arrange|
00009c40 64 20 66 6f 72 20 74 68 65 20 73 79 73 74 65 6d |d for the system|
00009c50 20 74 6f 20 73 74 61 72 74 20 75 70 20 28 57 65 | to start up (We|
00009c60 6c 6c 20 65 78 63 65 70 74 20 66 6f 72 0a 52 4f |ll except for.RO|
00009c70 33 2e 30 30 2e 2e 2e 29 20 69 6e 20 74 68 65 20 |3.00...) in the |
00009c80 6f 70 74 69 6d 75 6d 20 73 74 61 74 65 20 66 6f |optimum state fo|
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00009ca0 6f 75 6c 64 20 62 65 20 69 6e 74 65 72 65 73 74 |ould be interest|
00009cb0 65 64 20 69 6e 0a 61 6e 79 6f 6e 65 20 77 68 6f |ed in.anyone who|
00009cc0 20 68 61 73 20 64 6f 6e 65 20 73 70 65 65 64 20 | has done speed |
00009cd0 74 65 73 74 73 20 73 65 6e 64 69 6e 67 20 6d 65 |tests sending me|
00009ce0 20 74 68 65 20 72 65 73 75 6c 74 73 20 6f 66 20 | the results of |
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00009d00 69 6f 6e 73 2e 2e 2e 2e 0a 0a 2d 2d 2d 2d 2d 2d |ions......------|
00009d10 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00009d50 2d 2d 2d 2d 2d 2d 0a 0a 33 2e 32 29 20 48 6f 77 |------..3.2) How|
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00009d80 20 4f 53 20 33 3f 0a 0a 20 20 20 53 6f 6c 69 64 | OS 3?.. Solid|
00009d90 20 64 72 61 67 73 20 61 72 65 20 63 6f 6e 74 72 | drags are contr|
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00009df0 6f 6e 20 61 6c 6c 20 73 6f 6c 69 64 20 64 72 61 |on all solid dra|
00009e00 67 20 27 61 77 61 72 65 27 20 61 70 70 6c 69 63 |g 'aware' applic|
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00009e30 20 75 73 69 6e 67 20 61 20 2a 46 58 20 63 6f 6d | using a *FX com|
00009e40 6d 61 6e 64 20 66 72 6f 6d 20 74 68 65 20 63 6f |mand from the co|
00009e50 6d 6d 61 6e 64 20 6c 69 6e 65 20 69 73 20 61 20 |mmand line is a |
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00009e80 6c 6c 20 75 6e 73 65 74 2f 73 65 74 20 74 68 65 |ll unset/set the|
00009e90 20 6f 74 68 65 72 20 37 20 62 69 74 73 20 69 6e | other 7 bits in|
00009ea0 20 74 68 61 74 20 62 79 74 65 20 77 68 69 63 68 | that byte which|
00009eb0 20 68 61 76 65 0a 6d 65 61 6e 69 6e 67 20 74 6f | have.meaning to|
00009ec0 20 46 69 6c 65 53 77 69 74 63 68 20 61 6e 64 20 | FileSwitch and |
00009ed0 74 68 65 20 57 69 6d 70 2e 20 41 63 63 6f 72 64 |the Wimp. Accord|
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00009ef0 65 6e 64 65 64 20 77 61 79 20 74 6f 20 73 65 74 |ended way to set|
00009f00 0a 74 68 69 73 20 62 69 74 20 69 73 20 75 73 69 |.this bit is usi|
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00009f40 3a 2d 0a 0a 20 20 20 52 45 4d 20 54 6f 67 67 6c |:-.. REM Toggl|
00009f50 65 20 73 74 61 74 65 20 6f 66 20 44 72 61 67 41 |e state of DragA|
00009f60 53 70 72 69 74 65 20 62 69 74 20 69 6e 20 43 4d |Sprite bit in CM|
00009f70 4f 53 0a 0a 20 20 20 52 45 4d 20 52 65 61 64 20 |OS.. REM Read |
00009f80 62 79 74 65 0a 20 20 20 53 59 53 20 22 4f 53 5f |byte. SYS "OS_|
00009f90 42 79 74 65 22 2c 31 36 31 2c 26 31 43 20 54 4f |Byte",161,&1C TO|
00009fa0 20 2c 2c 62 79 74 65 25 0a 20 20 20 52 45 4d 20 | ,,byte%. REM |
00009fb0 45 4f 52 20 62 79 74 65 20 77 69 74 68 20 6d 61 |EOR byte with ma|
00009fc0 73 6b 20 66 6f 72 20 62 69 74 20 31 0a 20 20 20 |sk for bit 1. |
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00009ff0 69 74 65 20 62 79 74 65 20 62 61 63 6b 20 61 67 |ite byte back ag|
0000a000 61 69 6e 0a 20 20 20 53 59 53 20 22 4f 53 5f 42 |ain. SYS "OS_B|
0000a010 79 74 65 22 2c 31 36 32 2c 26 31 43 2c 62 79 74 |yte",162,&1C,byt|
0000a020 65 25 0a 20 20 20 45 4e 44 0a 0a 57 68 69 63 68 |e%. END..Which|
0000a030 20 73 61 66 65 6c 79 20 73 65 74 73 20 62 69 74 | safely sets bit|
0000a040 20 31 20 77 68 69 6c 65 20 70 72 65 73 65 72 76 | 1 while preserv|
0000a050 69 6e 67 20 74 68 65 20 73 65 74 74 69 6e 67 73 |ing the settings|
0000a060 20 6f 66 20 74 68 65 20 6f 74 68 65 72 20 62 69 | of the other bi|
0000a070 74 73 2e 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |ts...-----------|
0000a080 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000a0c0 2d 0a 53 65 63 74 69 6f 6e 20 34 3a 20 48 61 72 |-.Section 4: Har|
0000a0d0 64 77 61 72 65 20 70 72 6f 62 6c 65 6d 73 2e 0a |dware problems..|
0000a0e0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000a120 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 34 2e |------------..4.|
0000a130 31 29 20 4d 79 20 68 61 72 64 20 64 72 69 76 65 |1) My hard drive|
0000a140 20 67 69 76 65 73 20 6d 65 20 64 69 73 63 20 65 | gives me disc e|
0000a150 72 72 6f 72 73 20 77 68 65 6e 20 49 20 75 73 65 |rrors when I use|
0000a160 2c 20 77 68 61 74 20 64 6f 20 74 68 65 20 65 72 |, what do the er|
0000a170 72 6f 72 0a 20 20 20 20 20 6e 75 6d 62 65 72 73 |ror. numbers|
0000a180 20 6d 65 61 6e 3f 0a 0a 20 20 20 54 68 65 20 65 | mean?.. The e|
0000a190 72 72 6f 72 20 6e 75 6d 62 65 72 73 20 72 65 74 |rror numbers ret|
0000a1a0 75 72 6e 65 64 20 69 6e 64 69 63 61 74 65 20 74 |urned indicate t|
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0000a1c0 20 65 6e 63 6f 75 6e 74 65 72 65 64 2e 0a 45 78 | encountered..Ex|
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0000a1e0 6c 79 20 6d 6f 72 65 20 6d 65 61 6e 69 6e 67 66 |ly more meaningf|
0000a1f0 75 6c 20 6d 65 73 73 61 67 65 73 20 61 72 65 20 |ul messages are |
0000a200 6e 6f 74 20 72 65 74 75 72 6e 65 64 20 49 20 61 |not returned I a|
0000a210 6d 20 75 6e 73 75 72 65 2e 0a 54 68 65 20 65 72 |m unsure..The er|
0000a220 72 6f 72 20 63 6f 64 65 73 20 6d 65 61 6e 69 6e |ror codes meanin|
0000a230 67 73 20 61 72 65 20 61 73 20 66 6f 6c 6c 6f 77 |gs are as follow|
0000a240 73 20 3a 2d 0a 0a 20 20 20 53 54 35 30 36 20 65 |s :-.. ST506 e|
0000a250 72 72 6f 72 20 63 6f 64 65 73 0a 20 20 20 0a 20 |rror codes. . |
0000a260 20 20 26 30 31 20 20 41 42 54 20 20 20 20 20 43 | &01 ABT C|
0000a270 6f 6d 6d 61 6e 64 20 61 62 6f 72 74 20 68 61 73 |ommand abort has|
0000a280 20 62 65 65 6e 20 61 63 63 65 70 74 65 64 0a 20 | been accepted. |
0000a290 20 20 26 30 32 20 20 49 56 43 20 20 20 20 20 49 | &02 IVC I|
0000a2a0 6e 76 61 6c 69 64 20 63 6f 6d 6d 61 6e 64 0a 20 |nvalid command. |
0000a2b0 20 20 26 30 33 20 20 50 45 52 20 20 20 20 20 43 | &03 PER C|
0000a2c0 6f 6d 6d 61 6e 64 20 70 61 72 61 6d 65 74 65 72 |ommand parameter|
0000a2d0 20 65 72 72 6f 72 0a 20 20 20 26 30 34 20 20 4e | error. &04 N|
0000a2e0 49 4e 20 20 20 20 20 48 65 61 64 20 70 6f 73 69 |IN Head posi|
0000a2f0 74 69 6f 6e 69 6e 67 2c 20 64 69 73 63 20 61 63 |tioning, disc ac|
0000a300 63 65 73 73 2c 20 6f 72 20 64 72 69 76 65 20 63 |cess, or drive c|
0000a310 68 65 63 6b 20 62 65 66 6f 72 65 20 53 50 43 20 |heck before SPC |
0000a320 68 61 73 0a 20 20 20 20 20 20 20 20 20 20 20 20 |has. |
0000a330 20 20 20 20 62 65 65 6e 20 69 73 73 75 65 64 20 | been issued |
0000a340 0a 20 20 20 26 30 35 20 20 52 54 53 20 20 20 20 |. &05 RTS |
0000a350 20 54 53 54 20 63 6f 6d 6d 61 6e 64 20 69 6e 76 | TST command inv|
0000a360 61 6c 69 64 20 61 66 74 65 72 20 53 50 43 0a 20 |alid after SPC. |
0000a370 20 20 26 30 36 20 20 4e 55 53 20 20 20 20 20 55 | &06 NUS U|
0000a380 53 45 4c 44 20 66 6f 72 20 61 20 73 65 6c 65 63 |SELD for a selec|
0000a390 74 65 64 20 64 72 69 76 65 20 68 61 73 20 6e 6f |ted drive has no|
0000a3a0 74 20 62 65 65 6e 20 72 65 74 75 72 6e 65 64 0a |t been returned.|
0000a3b0 20 20 20 26 30 37 20 20 57 46 4c 20 20 20 20 20 | &07 WFL |
0000a3c0 57 72 69 74 65 20 66 61 75 6c 74 20 68 61 73 20 |Write fault has |
0000a3d0 62 65 65 6e 20 64 65 74 65 63 74 65 64 20 6f 6e |been detected on|
0000a3e0 20 74 68 65 20 53 54 35 30 36 20 69 6e 74 65 72 | the ST506 inter|
0000a3f0 66 61 63 65 0a 20 20 20 26 30 38 20 20 4e 52 59 |face. &08 NRY|
0000a400 20 20 20 20 20 52 65 61 64 79 20 73 69 67 6e 61 | Ready signa|
0000a410 6c 20 68 61 73 20 62 65 65 6e 20 6e 65 67 61 74 |l has been negat|
0000a420 65 64 0a 20 20 20 26 30 39 20 20 4e 53 43 20 20 |ed. &09 NSC |
0000a430 20 20 20 53 65 65 6b 20 63 6f 6d 70 6c 65 74 65 | Seek complete|
0000a440 64 20 28 53 43 50 29 20 77 61 73 6e 27 74 20 72 |d (SCP) wasn't r|
0000a450 65 74 75 72 6e 65 64 20 62 65 66 6f 72 65 20 61 |eturned before a|
0000a460 20 74 69 6d 65 6f 75 74 0a 20 20 20 26 30 41 20 | timeout. &0A |
0000a470 20 49 53 45 20 20 20 20 20 53 45 4b 2c 20 6f 72 | ISE SEK, or|
0000a480 20 64 69 73 63 20 61 63 63 65 73 73 20 63 6f 6d | disc access com|
0000a490 6d 61 6e 64 20 69 73 73 75 65 64 20 64 75 72 69 |mand issued duri|
0000a4a0 6e 67 20 73 65 65 6b 0a 20 20 20 26 30 42 20 20 |ng seek. &0B |
0000a4b0 49 4e 43 20 20 20 20 20 4e 65 78 74 20 63 79 6c |INC Next cyl|
0000a4c0 69 6e 64 65 72 20 61 64 64 72 65 73 73 20 67 72 |inder address gr|
0000a4d0 65 61 74 65 72 20 74 68 61 6e 20 6e 75 6d 62 65 |eater than numbe|
0000a4e0 72 20 6f 66 20 63 79 6c 69 6e 64 65 72 73 0a 20 |r of cylinders. |
0000a4f0 20 20 26 30 43 20 20 49 53 52 20 20 20 20 20 49 | &0C ISR I|
0000a500 6e 76 61 6c 69 64 20 73 74 65 70 20 72 61 74 65 |nvalid step rate|
0000a510 3a 20 68 69 67 68 65 73 74 2d 73 70 65 65 64 20 |: highest-speed |
0000a520 73 65 65 6b 20 73 70 65 63 69 66 69 65 64 20 69 |seek specified i|
0000a530 6e 20 6e 6f 72 6d 61 6c 0a 20 20 20 20 20 20 20 |n normal. |
0000a540 20 20 20 20 20 20 20 20 20 73 65 65 6b 20 6d 6f | seek mo|
0000a550 64 65 0a 20 20 20 26 30 44 20 20 53 4b 45 20 20 |de. &0D SKE |
0000a560 20 20 20 53 45 4b 20 6f 72 20 64 69 73 63 20 61 | SEK or disc a|
0000a570 63 63 65 73 73 20 63 6f 6d 6d 61 6e 64 20 69 73 |ccess command is|
0000a580 73 75 65 64 20 74 6f 20 64 72 69 76 65 20 77 69 |sued to drive wi|
0000a590 74 68 20 73 65 65 6b 20 65 72 72 6f 72 0a 20 20 |th seek error. |
0000a5a0 20 26 30 45 20 20 4f 56 52 20 20 20 20 20 44 61 | &0E OVR Da|
0000a5b0 74 61 20 6f 76 65 72 72 75 6e 20 28 6d 65 6d 6f |ta overrun (memo|
0000a5c0 72 79 20 73 6c 6f 77 65 72 20 74 68 61 6e 20 64 |ry slower than d|
0000a5d0 72 69 76 65 29 0a 20 20 20 26 30 46 20 20 49 50 |rive). &0F IP|
0000a5e0 48 20 20 20 20 20 48 65 61 64 20 61 64 64 72 65 |H Head addre|
0000a5f0 73 73 20 67 72 65 61 74 65 72 20 74 68 65 6e 20 |ss greater then |
0000a600 6e 75 6d 62 65 72 20 6f 66 20 68 65 61 64 73 0a |number of heads.|
0000a610 20 20 20 26 31 30 20 20 44 45 45 20 20 20 20 20 | &10 DEE |
0000a620 45 72 72 6f 72 20 43 6f 72 72 65 63 74 69 6f 6e |Error Correction|
0000a630 20 43 6f 64 65 20 28 45 43 43 29 20 64 65 74 65 | Code (ECC) dete|
0000a640 63 74 65 64 20 61 6e 20 65 72 72 6f 72 0a 20 20 |cted an error. |
0000a650 20 26 31 31 20 20 44 43 45 20 20 20 20 20 43 52 | &11 DCE CR|
0000a660 43 20 65 72 72 6f 72 20 69 6e 20 64 61 74 61 20 |C error in data |
0000a670 61 72 65 61 0a 20 20 20 26 31 32 20 20 45 43 52 |area. &12 ECR|
0000a680 20 20 20 20 20 45 43 43 20 63 6f 72 72 65 63 74 | ECC correct|
0000a690 65 64 20 61 6e 20 65 72 72 6f 72 0a 20 20 20 26 |ed an error. &|
0000a6a0 31 33 20 20 44 46 45 20 20 20 20 20 46 61 74 61 |13 DFE Fata|
0000a6b0 6c 20 45 43 43 20 65 72 72 6f 72 20 69 6e 20 64 |l ECC error in d|
0000a6c0 61 74 61 20 61 72 65 61 0a 20 20 20 26 31 34 20 |ata area. &14 |
0000a6d0 20 4e 48 54 20 20 20 20 20 49 6e 20 43 4d 50 44 | NHT In CMPD|
0000a6e0 20 63 6f 6d 6d 61 6e 64 20 64 61 74 61 20 6d 69 | command data mi|
0000a6f0 73 6d 61 74 63 68 65 64 20 66 72 6f 6d 20 68 6f |smatched from ho|
0000a700 73 74 20 61 6e 64 20 64 69 73 63 0a 20 20 20 26 |st and disc. &|
0000a710 31 35 20 20 49 43 45 20 20 20 20 20 43 52 43 20 |15 ICE CRC |
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0000a730 64 20 28 6e 6f 74 20 67 65 6e 65 72 61 74 65 64 |d (not generated|
0000a740 20 66 6f 72 20 53 54 35 30 36 29 0a 20 20 20 26 | for ST506). &|
0000a750 31 36 20 20 54 4f 56 20 20 20 20 20 49 44 20 6e |16 TOV ID n|
0000a760 6f 74 20 66 6f 75 6e 64 20 77 69 74 68 69 6e 20 |ot found within |
0000a770 74 69 6d 65 6f 75 74 0a 20 20 20 26 31 37 20 20 |timeout. &17 |
0000a780 4e 49 41 20 20 20 20 20 49 44 20 61 72 65 61 20 |NIA ID area |
0000a790 73 74 61 72 74 65 64 20 77 69 74 68 20 61 6e 20 |started with an |
0000a7a0 69 6d 70 72 6f 70 65 72 20 61 64 64 72 65 73 73 |improper address|
0000a7b0 20 6d 61 73 6b 0a 20 20 20 26 31 38 20 20 4e 44 | mask. &18 ND|
0000a7c0 41 20 20 20 20 20 4d 69 73 73 69 6e 67 20 61 64 |A Missing ad|
0000a7d0 64 72 65 73 73 20 6d 61 72 6b 0a 20 20 20 26 31 |dress mark. &1|
0000a7e0 39 20 20 4e 57 52 20 20 20 20 20 44 72 69 76 65 |9 NWR Drive|
0000a7f0 20 77 72 69 74 65 20 70 72 6f 74 65 63 74 65 64 | write protected|
0000a800 0a 20 20 20 0a 20 20 20 49 44 45 20 65 72 72 6f |. . IDE erro|
0000a810 72 73 0a 20 20 20 0a 20 20 20 2d 20 41 73 20 53 |rs. . - As S|
0000a820 54 35 30 36 2c 20 65 78 63 65 70 74 3a 0a 20 20 |T506, except:. |
0000a830 20 0a 20 20 20 26 30 32 20 20 49 56 43 20 20 20 | . &02 IVC |
0000a840 20 20 43 6f 6d 6d 61 6e 64 20 61 62 6f 72 74 65 | Command aborte|
0000a850 64 20 62 79 20 63 6f 6e 74 72 6f 6c 6c 65 72 0a |d by controller.|
0000a860 20 20 20 26 30 37 20 20 57 46 4c 20 20 20 20 20 | &07 WFL |
0000a870 57 72 69 74 65 20 66 61 75 6c 74 0a 20 20 20 26 |Write fault. &|
0000a880 30 38 20 20 4e 52 59 20 20 20 20 20 44 72 69 76 |08 NRY Driv|
0000a890 65 20 6e 6f 74 20 72 65 61 64 79 0a 20 20 20 26 |e not ready. &|
0000a8a0 30 39 20 20 4e 53 43 20 20 20 20 20 54 72 61 63 |09 NSC Trac|
0000a8b0 6b 20 30 20 6e 6f 74 20 66 6f 75 6e 64 0a 20 20 |k 0 not found. |
0000a8c0 20 26 31 33 20 20 44 46 45 20 20 20 20 20 55 6e | &13 DFE Un|
0000a8d0 63 6f 72 72 65 63 74 65 64 20 64 61 74 61 20 65 |corrected data e|
0000a8e0 72 72 6f 72 0a 20 20 20 26 31 36 20 20 54 4f 56 |rror. &16 TOV|
0000a8f0 20 20 20 20 20 53 65 63 74 6f 72 20 49 44 20 66 | Sector ID f|
0000a900 69 65 6c 64 20 6e 6f 74 20 66 6f 75 6e 64 0a 20 |ield not found. |
0000a910 20 20 26 31 37 20 20 4e 49 41 20 20 20 20 20 42 | &17 NIA B|
0000a920 61 64 20 62 6c 6f 63 6b 20 6d 61 72 6b 20 64 65 |ad block mark de|
0000a930 74 65 63 74 65 64 0a 20 20 20 26 31 38 20 20 4e |tected. &18 N|
0000a940 44 41 20 20 20 20 20 4e 6f 20 64 61 74 61 20 61 |DA No data a|
0000a950 64 64 72 65 73 73 20 6d 61 72 6b 0a 20 20 20 26 |ddress mark. &|
0000a960 32 30 20 20 20 20 20 20 20 20 20 20 4e 6f 20 44 |20 No D|
0000a970 52 51 20 77 68 65 6e 20 65 78 70 65 63 74 65 64 |RQ when expected|
0000a980 0a 20 20 20 26 32 31 20 20 20 20 20 20 20 20 20 |. &21 |
0000a990 20 44 72 69 76 65 20 62 75 73 79 20 77 68 65 6e | Drive busy when|
0000a9a0 20 63 6f 6d 6d 61 6e 64 65 64 0a 20 20 20 26 32 | commanded. &2|
0000a9b0 32 20 20 20 20 20 20 20 20 20 20 44 72 69 76 65 |2 Drive|
0000a9c0 20 62 75 73 79 20 6f 6e 20 63 6f 6d 6d 61 6e 64 | busy on command|
0000a9d0 20 63 6f 6d 70 6c 65 74 69 6f 6e 0a 20 20 20 26 | completion. &|
0000a9e0 32 33 20 20 20 20 20 20 20 20 20 20 43 6f 6e 74 |23 Cont|
0000a9f0 72 6f 6c 6c 65 72 20 64 69 64 20 6e 6f 74 20 72 |roller did not r|
0000aa00 65 73 70 6f 6e 64 20 77 69 74 68 69 6e 20 74 69 |espond within ti|
0000aa10 6d 65 6f 75 74 0a 20 20 20 26 32 34 20 20 20 20 |meout. &24 |
0000aa20 20 20 20 20 20 20 55 6e 6b 6e 6f 77 6e 20 63 6f | Unknown co|
0000aa30 64 65 20 69 6e 20 65 72 72 6f 72 20 72 65 67 69 |de in error regi|
0000aa40 73 74 65 72 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |ster..----------|
0000aa50 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000aa90 2d 2d 0a 0a 34 2e 32 29 20 4d 79 20 64 69 73 63 |--..4.2) My disc|
0000aaa0 20 67 69 76 65 73 20 6d 65 20 61 20 27 42 72 6f | gives me a 'Bro|
0000aab0 6b 65 6e 20 44 69 72 65 63 74 6f 72 79 27 20 6f |ken Directory' o|
0000aac0 72 20 6d 79 20 46 72 65 65 20 53 70 61 63 65 20 |r my Free Space |
0000aad0 4d 61 70 20 69 73 20 63 6f 72 72 75 70 74 2c 0a |Map is corrupt,.|
0000aae0 20 20 20 20 20 77 68 61 74 20 63 61 6e 20 49 20 | what can I |
0000aaf0 64 6f 3f 0a 0a 20 20 20 54 68 65 72 65 20 61 72 |do?.. There ar|
0000ab00 65 20 76 61 72 69 6f 75 73 20 70 72 6f 67 72 61 |e various progra|
0000ab10 6d 73 20 6f 75 74 20 74 68 65 72 65 20 6e 6f 77 |ms out there now|
0000ab20 20 77 68 69 63 68 20 66 69 78 20 74 68 69 73 20 | which fix this |
0000ab30 70 72 6f 62 6c 65 6d 2e 20 54 68 65 20 50 44 0a |problem. The PD.|
0000ab40 6f 6e 65 73 20 61 6c 6c 20 61 72 65 20 27 63 61 |ones all are 'ca|
0000ab50 76 65 61 74 20 65 6d 70 74 6f 72 27 20 70 72 6f |veat emptor' pro|
0000ab60 67 72 61 6d 73 20 62 75 74 20 61 72 65 20 77 6f |grams but are wo|
0000ab70 72 74 68 20 74 72 79 69 6e 67 20 69 66 20 79 6f |rth trying if yo|
0000ab80 75 20 76 69 74 61 6c 6c 79 0a 6e 65 65 64 20 74 |u vitally.need t|
0000ab90 6f 20 72 65 63 6f 76 65 72 20 73 6f 6d 65 20 66 |o recover some f|
0000aba0 69 6c 65 73 2c 20 6f 72 20 6a 75 73 74 20 64 6f |iles, or just do|
0000abb0 6e 27 74 20 68 61 76 65 20 74 68 65 20 66 6c 6f |n't have the flo|
0000abc0 70 70 79 20 64 69 73 63 2f 73 74 72 65 61 6d 65 |ppy disc/streame|
0000abd0 72 0a 73 70 61 63 65 20 74 6f 20 62 61 63 6b 20 |r.space to back |
0000abe0 79 6f 75 72 20 64 72 69 76 65 20 75 70 2e 0a 0a |your drive up...|
0000abf0 20 20 20 49 6e 20 74 68 65 20 46 41 51 20 6d 61 | In the FAQ ma|
0000ac00 69 6e 74 61 69 6e 65 72 27 73 20 65 78 70 65 72 |intainer's exper|
0000ac10 69 65 6e 63 65 20 74 68 65 20 75 74 69 6c 69 74 |ience the utilit|
0000ac20 79 20 27 66 73 63 6b 27 20 28 61 20 73 68 61 72 |y 'fsck' (a shar|
0000ac30 65 77 61 72 65 0a 75 74 69 6c 69 74 79 20 61 76 |eware.utility av|
0000ac40 61 69 6c 61 62 6c 65 20 61 74 20 67 6f 6f 64 20 |ailable at good |
0000ac50 46 54 50 20 73 69 74 65 73 20 6e 65 61 72 20 79 |FTP sites near y|
0000ac60 6f 75 29 20 77 6f 72 6b 73 20 72 65 6c 69 61 62 |ou) works reliab|
0000ac70 6c 79 20 61 6e 64 20 77 65 6c 6c 2e 20 45 76 65 |ly and well. Eve|
0000ac80 6e 0a 73 6f 20 69 74 20 69 73 20 72 65 63 63 6f |n.so it is recco|
0000ac90 6d 65 6e 64 65 64 20 74 68 61 74 20 69 66 20 79 |mended that if y|
0000aca0 6f 75 20 68 61 76 65 20 63 72 69 74 69 63 61 6c |ou have critical|
0000acb0 20 64 61 74 61 20 6f 6e 20 79 6f 75 72 20 64 72 | data on your dr|
0000acc0 69 76 65 20 79 6f 75 20 73 68 6f 75 6c 64 0a 75 |ive you should.u|
0000acd0 73 65 20 73 6f 6d 65 74 68 69 6e 67 20 6c 69 6b |se something lik|
0000ace0 65 20 66 73 63 6b 20 74 6f 20 72 65 63 6f 76 65 |e fsck to recove|
0000acf0 72 20 74 68 65 20 64 61 74 61 20 61 6e 64 20 74 |r the data and t|
0000ad00 68 65 6e 20 72 65 66 6f 72 6d 61 74 20 74 68 65 |hen reformat the|
0000ad10 20 64 72 69 76 65 2e 0a 0a 2d 2d 2d 2d 2d 2d 2d | drive...-------|
0000ad20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000ad60 2d 2d 2d 2d 2d 0a 0a 34 2e 33 29 20 57 68 61 74 |-----..4.3) What|
0000ad70 20 64 6f 65 73 20 74 68 65 20 70 6f 77 65 72 20 | does the power |
0000ad80 6f 6e 20 73 65 6c 66 2d 74 65 73 74 20 63 68 65 |on self-test che|
0000ad90 63 6b 20 61 6e 64 20 68 6f 77 20 64 6f 65 73 20 |ck and how does |
0000ada0 69 74 20 73 69 67 6e 61 6c 20 65 72 72 6f 72 73 |it signal errors|
0000adb0 0a 20 20 20 20 20 62 61 63 6b 20 74 6f 20 79 6f |. back to yo|
0000adc0 75 3f 0a 0a 20 20 20 54 68 65 20 70 75 72 70 6c |u?.. The purpl|
0000add0 65 20 73 63 72 65 65 6e 20 61 74 20 70 6f 77 65 |e screen at powe|
0000ade0 72 20 6f 6e 20 69 6e 64 69 63 61 74 65 73 20 74 |r on indicates t|
0000adf0 68 61 74 20 74 68 65 20 73 65 6c 66 2d 74 65 73 |hat the self-tes|
0000ae00 74 20 68 61 73 20 62 65 67 75 6e 2e 20 41 0a 62 |t has begun. A.b|
0000ae10 72 69 65 66 20 52 4f 4d 2c 20 52 41 4d 2c 20 56 |rief ROM, RAM, V|
0000ae20 49 44 43 20 61 6e 64 20 49 4f 43 20 74 65 73 74 |IDC and IOC test|
0000ae30 20 69 73 20 70 65 72 66 6f 72 6d 65 64 20 61 6e | is performed an|
0000ae40 64 20 74 68 65 6e 20 74 68 65 20 73 63 72 65 65 |d then the scree|
0000ae50 6e 20 63 6f 6c 6f 75 72 0a 63 68 61 6e 67 65 73 |n colour.changes|
0000ae60 20 74 6f 20 62 6c 75 65 20 61 6e 64 20 61 20 66 | to blue and a f|
0000ae70 75 6c 6c 20 6d 65 6d 6f 72 79 20 74 65 73 74 20 |ull memory test |
0000ae80 69 73 20 70 65 72 66 6f 72 6d 65 64 2c 20 61 6c |is performed, al|
0000ae90 6f 6e 67 20 77 69 74 68 20 61 20 73 65 63 6f 6e |ong with a secon|
0000aea0 64 0a 74 65 73 74 20 6f 66 20 74 68 65 20 56 49 |d.test of the VI|
0000aeb0 44 43 20 61 6e 64 20 49 4f 43 2e 20 20 57 68 65 |DC and IOC. Whe|
0000aec0 6e 20 74 68 65 20 73 63 72 65 65 6e 20 72 65 74 |n the screen ret|
0000aed0 75 72 6e 73 20 74 6f 20 70 75 72 70 6c 65 2c 20 |urns to purple, |
0000aee0 74 68 65 20 6d 61 63 68 69 6e 65 20 69 73 0a 74 |the machine is.t|
0000aef0 65 73 74 69 6e 67 20 66 6f 72 20 61 6e 20 41 52 |esting for an AR|
0000af00 4d 33 2e 20 20 41 74 20 74 68 65 20 65 6e 64 20 |M3. At the end |
0000af10 6f 66 20 74 68 69 73 20 73 65 71 75 65 6e 63 65 |of this sequence|
0000af20 20 74 68 65 20 73 63 72 65 65 6e 20 63 6f 6c 6f | the screen colo|
0000af30 75 72 20 69 73 20 73 65 74 0a 74 6f 20 67 72 65 |ur is set.to gre|
0000af40 65 6e 20 28 66 6f 72 20 70 61 73 73 29 20 6f 72 |en (for pass) or|
0000af50 20 72 65 64 20 28 66 6f 72 20 66 61 69 6c 29 2e | red (for fail).|
0000af60 20 20 49 66 20 74 68 65 20 74 65 73 74 73 20 68 | If the tests h|
0000af70 61 76 65 20 61 6c 6c 20 70 61 73 73 65 64 20 74 |ave all passed t|
0000af80 68 65 6e 0a 74 68 65 20 6d 61 63 68 69 6e 65 20 |hen.the machine |
0000af90 73 74 61 72 74 73 20 74 6f 20 62 6f 6f 74 20 61 |starts to boot a|
0000afa0 6e 64 20 74 68 65 20 52 49 53 43 20 4f 53 20 33 |nd the RISC OS 3|
0000afb0 20 77 65 6c 63 6f 6d 65 20 73 63 72 65 65 6e 20 | welcome screen |
0000afc0 69 73 20 64 69 73 70 6c 61 79 65 64 2e 0a 0a 20 |is displayed... |
0000afd0 20 20 49 66 20 61 6e 79 20 74 65 73 74 20 66 61 | If any test fa|
0000afe0 69 6c 73 2c 20 74 68 65 20 73 63 72 65 65 6e 20 |ils, the screen |
0000aff0 77 69 6c 6c 20 72 65 6d 61 69 6e 20 72 65 64 20 |will remain red |
0000b000 61 6e 64 20 74 68 65 20 64 69 73 63 20 64 72 69 |and the disc dri|
0000b010 76 65 20 6c 69 67 68 74 0a 77 69 6c 6c 20 62 6c |ve light.will bl|
0000b020 69 6e 6b 20 61 20 66 61 75 6c 74 20 63 6f 64 65 |ink a fault code|
0000b030 2e 20 20 41 20 73 68 6f 72 74 20 66 6c 61 73 68 |. A short flash|
0000b040 20 69 73 20 75 73 65 64 20 74 6f 20 69 6e 64 69 | is used to indi|
0000b050 63 61 74 65 20 61 20 62 69 6e 61 72 79 20 27 30 |cate a binary '0|
0000b060 27 20 61 6e 64 0a 61 20 6c 6f 6e 67 20 66 6c 61 |' and.a long fla|
0000b070 73 68 20 69 6e 64 69 63 61 74 65 73 20 61 20 62 |sh indicates a b|
0000b080 69 6e 61 72 79 20 27 31 27 2e 20 20 54 68 65 20 |inary '1'. The |
0000b090 62 69 74 73 20 61 72 65 20 67 72 6f 75 70 65 64 |bits are grouped|
0000b0a0 20 69 6e 74 6f 20 65 69 67 68 74 0a 6e 79 62 62 | into eight.nybb|
0000b0b0 6c 65 73 20 28 62 6c 6f 63 6b 73 20 6f 66 20 66 |les (blocks of f|
0000b0c0 6f 75 72 20 62 69 74 73 29 20 77 69 74 68 20 74 |our bits) with t|
0000b0d0 68 65 20 6d 6f 73 74 20 73 69 67 6e 69 66 69 63 |he most signific|
0000b0e0 61 6e 74 20 62 69 74 20 66 69 72 73 74 2e 0a 0a |ant bit first...|
0000b0f0 20 20 20 54 68 65 20 6c 6f 77 65 73 74 20 73 65 | The lowest se|
0000b100 76 65 6e 20 62 69 74 73 20 61 72 65 20 61 20 73 |ven bits are a s|
0000b110 74 61 74 75 73 20 77 6f 72 64 2e 20 20 54 68 65 |tatus word. The|
0000b120 20 6d 65 61 6e 69 6e 67 20 6f 66 20 65 61 63 68 | meaning of each|
0000b130 20 62 69 74 20 69 73 0a 67 69 76 65 6e 20 62 65 | bit is.given be|
0000b140 6c 6f 77 20 69 6e 20 68 65 78 20 3a 2d 0a 0a 30 |low in hex :-..0|
0000b150 30 30 30 30 30 30 31 20 20 20 53 65 6c 66 2d 74 |0000001 Self-t|
0000b160 65 73 74 20 64 75 65 20 74 6f 20 70 6f 77 65 72 |est due to power|
0000b170 20 6f 6e 0a 30 30 30 30 30 30 30 32 20 20 20 53 | on.00000002 S|
0000b180 65 6c 66 2d 74 65 73 74 20 64 75 65 20 74 6f 20 |elf-test due to |
0000b190 69 6e 74 65 72 66 61 63 65 20 68 61 72 64 77 61 |interface hardwa|
0000b1a0 72 65 0a 30 30 30 30 30 30 30 34 20 20 20 53 65 |re.00000004 Se|
0000b1b0 6c 66 2d 74 65 73 74 20 64 75 65 20 74 6f 20 74 |lf-test due to t|
0000b1c0 65 73 74 20 6c 69 6e 6b 0a 30 30 30 30 30 30 30 |est link.0000000|
0000b1d0 38 20 20 20 4c 6f 6e 67 20 6d 65 6d 6f 72 79 20 |8 Long memory |
0000b1e0 74 65 73 74 20 70 65 72 66 6f 72 6d 65 64 0a 30 |test performed.0|
0000b1f0 30 30 30 30 30 31 30 20 20 20 41 52 4d 20 33 20 |0000010 ARM 3 |
0000b200 66 69 74 74 65 64 0a 30 30 30 30 30 30 32 30 20 |fitted.00000020 |
0000b210 20 20 4c 6f 6e 67 20 6d 65 6d 6f 72 79 20 74 65 | Long memory te|
0000b220 73 74 20 64 69 73 61 62 6c 65 64 0a 30 30 30 30 |st disabled.0000|
0000b230 30 30 34 30 20 20 20 50 43 2d 73 74 79 6c 65 20 |0040 PC-style |
0000b240 49 4f 20 77 6f 72 6c 64 20 64 65 74 65 63 74 65 |IO world detecte|
0000b250 64 0a 0a 20 20 20 42 69 74 73 20 38 2d 33 31 20 |d.. Bits 8-31 |
0000b260 69 6e 64 69 63 61 74 65 20 74 68 65 20 66 61 75 |indicate the fau|
0000b270 6c 74 20 63 6f 64 65 20 61 6e 64 20 61 72 65 20 |lt code and are |
0000b280 64 65 73 63 72 69 62 65 64 20 62 65 6c 6f 77 2e |described below.|
0000b290 20 20 4e 6f 74 20 61 6c 6c 20 74 68 65 0a 62 69 | Not all the.bi|
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0000b2b0 30 30 30 32 30 30 20 20 20 52 4f 4d 20 66 61 69 |000200 ROM fai|
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0000b2d0 74 0a 30 30 30 30 30 34 30 30 20 20 20 4d 45 4d |t.00000400 MEM|
0000b2e0 43 20 43 41 4d 20 6d 61 70 70 69 6e 67 20 66 61 |C CAM mapping fa|
0000b2f0 69 6c 65 64 0a 30 30 30 30 30 38 30 30 20 20 20 |iled.00000800 |
0000b300 4d 45 4d 43 20 70 72 6f 74 65 63 74 69 6f 6e 20 |MEMC protection |
0000b310 66 61 69 6c 65 64 0a 30 30 30 30 34 30 30 30 20 |failed.00004000 |
0000b320 20 20 56 49 44 43 20 56 69 72 71 20 28 76 69 64 | VIDC Virq (vid|
0000b330 65 6f 20 69 6e 74 65 72 72 75 70 74 29 20 74 69 |eo interrupt) ti|
0000b340 6d 69 6e 67 20 66 61 69 6c 65 64 0a 30 30 30 30 |ming failed.0000|
0000b350 38 30 30 30 20 20 20 56 49 44 43 20 53 69 72 71 |8000 VIDC Sirq|
0000b360 20 28 73 6f 75 6e 64 20 69 6e 74 65 72 72 75 70 | (sound interrup|
0000b370 74 29 20 74 69 6d 69 6e 67 20 66 61 69 6c 65 64 |t) timing failed|
0000b380 0a 30 30 30 32 30 30 30 30 20 20 20 52 41 4d 20 |.00020000 RAM |
0000b390 63 6f 6e 74 72 6f 6c 20 6c 69 6e 65 20 66 61 69 |control line fai|
0000b3a0 6c 75 72 65 0a 30 30 30 34 30 30 30 30 20 20 20 |lure.00040000 |
0000b3b0 4c 6f 6e 67 20 52 41 4d 20 74 65 73 74 20 66 61 |Long RAM test fa|
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0000b3d0 64 20 70 61 72 74 79 20 56 49 44 43 20 65 6e 68 |d party VIDC enh|
0000b3e0 61 6e 63 65 72 73 20 6f 6e 20 6f 6c 64 65 72 20 |ancers on older |
0000b3f0 68 61 72 64 77 61 72 65 20 74 72 69 67 67 65 72 |hardware trigger|
0000b400 20 74 68 65 20 73 65 6c 66 20 74 65 73 74 20 74 | the self test t|
0000b410 6f 0a 66 61 69 6c 2e 20 49 66 20 79 6f 75 20 61 |o.fail. If you a|
0000b420 72 65 20 67 65 74 74 69 6e 67 20 61 20 66 61 69 |re getting a fai|
0000b430 6c 65 64 20 73 65 6c 66 20 74 65 73 74 20 77 69 |led self test wi|
0000b440 74 68 20 61 20 56 49 44 43 20 65 6e 68 61 6e 63 |th a VIDC enhanc|
0000b450 65 72 2c 20 79 65 74 20 74 68 65 0a 6d 61 63 68 |er, yet the.mach|
0000b460 69 6e 65 20 69 73 20 77 6f 72 6b 69 6e 67 20 66 |ine is working f|
0000b470 69 6e 65 2c 20 65 6e 74 65 72 20 61 6e 64 20 72 |ine, enter and r|
0000b480 75 6e 20 74 68 69 73 20 42 41 53 49 43 20 70 72 |un this BASIC pr|
0000b490 6f 67 72 61 6d 20 61 6e 64 20 74 68 65 6e 20 73 |ogram and then s|
0000b4a0 61 76 65 20 79 6f 75 72 0a 43 4d 4f 53 20 73 65 |ave your.CMOS se|
0000b4b0 74 74 69 6e 67 73 20 3a 2d 0a 0a 20 20 20 52 45 |ttings :-.. RE|
0000b4c0 4d 20 54 6f 67 67 6c 65 20 73 74 61 74 65 20 6f |M Toggle state o|
0000b4d0 66 20 70 6f 77 65 72 20 6f 6e 20 73 65 6c 66 20 |f power on self |
0000b4e0 74 65 73 74 20 62 69 74 20 69 6e 20 43 4d 4f 53 |test bit in CMOS|
0000b4f0 0a 0a 20 20 20 52 45 4d 20 52 65 61 64 20 62 79 |.. REM Read by|
0000b500 74 65 0a 20 20 20 53 59 53 20 22 4f 53 5f 42 79 |te. SYS "OS_By|
0000b510 74 65 22 2c 31 36 31 2c 26 42 43 20 54 4f 20 2c |te",161,&BC TO ,|
0000b520 2c 62 79 74 65 25 0a 20 20 20 52 45 4d 20 45 4f |,byte%. REM EO|
0000b530 52 20 62 79 74 65 20 77 69 74 68 20 6d 61 73 6b |R byte with mask|
0000b540 20 66 6f 72 20 62 69 74 20 31 0a 20 20 20 62 79 | for bit 1. by|
0000b550 74 65 25 20 3d 20 62 79 74 65 25 20 45 4f 52 20 |te% = byte% EOR |
0000b560 31 3c 3c 37 0a 20 20 20 52 45 4d 20 57 72 69 74 |1<<7. REM Writ|
0000b570 65 20 62 79 74 65 20 62 61 63 6b 20 61 67 61 69 |e byte back agai|
0000b580 6e 0a 20 20 20 53 59 53 20 22 4f 53 5f 42 79 74 |n. SYS "OS_Byt|
0000b590 65 22 2c 31 36 32 2c 26 42 43 2c 62 79 74 65 25 |e",162,&BC,byte%|
0000b5a0 0a 20 20 20 45 4e 44 0a 0a 54 68 69 73 20 6d 6f |. END..This mo|
0000b5b0 64 69 66 69 65 73 20 74 68 65 20 73 65 6c 66 20 |difies the self |
0000b5c0 74 65 73 74 20 74 6f 20 63 6f 70 65 20 77 69 74 |test to cope wit|
0000b5d0 68 20 74 68 65 20 56 49 44 43 20 65 6e 68 61 6e |h the VIDC enhan|
0000b5e0 63 65 72 2e 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |cer...----------|
0000b5f0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000b630 2d 2d 0a 0a 34 2e 34 29 20 4d 79 20 52 65 61 6c |--..4.4) My Real|
0000b640 20 54 69 6d 65 20 43 6c 6f 63 6b 20 68 61 73 20 | Time Clock has |
0000b650 70 61 75 73 65 64 2c 20 68 6f 77 20 64 6f 20 49 |paused, how do I|
0000b660 20 72 65 73 74 61 72 74 20 69 74 3f 0a 0a 20 20 | restart it?.. |
0000b670 20 54 68 69 73 20 69 73 20 61 20 70 72 6f 62 6c | This is a probl|
0000b680 65 6d 20 63 61 75 73 65 64 20 6d 6f 73 74 20 6f |em caused most o|
0000b690 66 74 65 6e 20 62 79 20 27 72 6f 67 75 65 27 20 |ften by 'rogue' |
0000b6a0 73 6f 66 74 77 61 72 65 20 63 68 61 74 74 69 6e |software chattin|
0000b6b0 67 20 74 6f 20 74 68 65 0a 49 49 43 20 62 75 73 |g to the.IIC bus|
0000b6c0 20 61 6e 64 20 69 6e 63 6f 72 72 65 63 74 6c 79 | and incorrectly|
0000b6d0 20 73 65 74 74 69 6e 67 20 74 68 65 20 70 61 75 | setting the pau|
0000b6e0 73 65 20 62 69 74 20 6f 6e 20 74 68 65 20 52 54 |se bit on the RT|
0000b6f0 43 20 63 6f 6e 74 72 6f 6c 20 72 65 67 69 73 74 |C control regist|
0000b700 65 72 2e 0a 53 79 6d 70 74 6f 6d 73 20 6f 66 20 |er..Symptoms of |
0000b710 74 68 69 73 20 68 61 70 70 65 6e 69 6e 67 20 61 |this happening a|
0000b720 72 65 20 74 68 61 74 20 74 68 65 20 74 69 6d 65 |re that the time|
0000b730 20 69 73 20 61 6c 77 61 79 73 20 74 68 65 20 73 | is always the s|
0000b740 61 6d 65 20 65 76 65 72 79 74 69 6d 65 0a 79 6f |ame everytime.yo|
0000b750 75 20 72 65 62 6f 6f 74 20 61 6e 64 20 74 68 65 |u reboot and the|
0000b760 20 73 6f 66 74 77 61 72 65 20 63 6c 6f 63 6b 20 | software clock |
0000b770 74 65 6e 64 73 20 74 6f 20 72 75 6e 20 73 6c 69 |tends to run sli|
0000b780 67 68 74 6c 79 20 73 6c 6f 77 20 28 6c 6f 73 69 |ghtly slow (losi|
0000b790 6e 67 20 61 62 6f 75 74 20 61 0a 6d 69 6e 75 74 |ng about a.minut|
0000b7a0 65 20 65 76 65 72 79 20 68 6f 75 72 20 6f 72 20 |e every hour or |
0000b7b0 73 6f 2e 29 2e 20 49 66 20 79 6f 75 20 61 72 65 |so.). If you are|
0000b7c0 20 65 78 70 65 72 69 65 6e 63 69 6e 67 20 74 68 | experiencing th|
0000b7d0 65 73 65 20 73 79 6d 70 74 6f 6d 73 20 74 68 69 |ese symptoms thi|
0000b7e0 73 0a 70 72 6f 67 72 61 6d 20 73 68 6f 75 6c 64 |s.program should|
0000b7f0 20 72 65 73 74 61 72 74 20 79 6f 75 72 20 52 54 | restart your RT|
0000b800 43 20 63 6c 6f 63 6b 20 3a 2d 0a 0a 52 45 4d 20 |C clock :-..REM |
0000b810 70 6f 6b 65 20 52 54 43 20 63 6f 6e 74 72 6f 6c |poke RTC control|
0000b820 20 72 65 67 69 73 74 65 72 0a 52 45 4d 20 20 42 | register.REM B|
0000b830 69 74 20 20 20 30 20 20 20 20 20 20 20 20 20 31 |it 0 1|
0000b840 0a 52 45 4d 20 20 20 37 20 20 20 43 6f 75 6e 74 |.REM 7 Count|
0000b850 20 20 52 65 73 65 74 44 69 76 69 64 65 72 0a 52 | ResetDivider.R|
0000b860 45 4d 20 20 20 36 20 20 20 43 6f 75 6e 74 20 20 |EM 6 Count |
0000b870 48 6f 6c 64 4c 61 73 74 43 6f 75 6e 74 0a 52 45 |HoldLastCount.RE|
0000b880 4d 20 77 72 69 74 65 20 30 20 66 6f 72 20 6e 6f |M write 0 for no|
0000b890 72 6d 61 6c 20 6f 70 65 72 61 74 69 6f 6e 2c 20 |rmal operation, |
0000b8a0 77 72 69 74 65 20 26 38 30 20 6f 72 20 26 34 30 |write &80 or &40|
0000b8b0 20 66 72 65 65 7a 65 73 20 52 54 43 0a 44 49 4d | freezes RTC.DIM|
0000b8c0 20 63 6d 6f 73 64 61 74 61 25 20 31 36 0a 21 63 | cmosdata% 16.!c|
0000b8d0 6d 6f 73 64 61 74 61 25 3d 26 30 30 30 30 30 30 |mosdata%=&000000|
0000b8e0 30 30 0a 52 45 4d 20 77 72 69 74 65 20 30 20 74 |00.REM write 0 t|
0000b8f0 77 69 63 65 20 74 6f 20 52 54 43 2c 20 66 69 72 |wice to RTC, fir|
0000b900 73 74 20 30 20 69 73 20 61 64 64 72 65 73 73 2d |st 0 is address-|
0000b910 20 63 6f 6e 74 72 6f 6c 20 72 65 67 0a 52 45 4d | control reg.REM|
0000b920 20 73 65 63 6f 6e 64 20 69 73 20 63 6f 6e 74 72 | second is contr|
0000b930 6f 6c 20 72 65 67 20 76 61 6c 75 65 20 30 20 69 |ol reg value 0 i|
0000b940 73 20 64 65 66 75 61 6c 74 20 69 2e 65 2e 20 63 |s defualt i.e. c|
0000b950 6c 6f 63 6b 20 6f 6e 0a 53 59 53 20 26 32 34 30 |lock on.SYS &240|
0000b960 2c 20 26 41 30 2c 20 63 6d 6f 73 64 61 74 61 25 |, &A0, cmosdata%|
0000b970 2c 32 0a 45 4e 44 0a 0a 59 6f 75 20 77 69 6c 6c |,2.END..You will|
0000b980 20 6e 65 65 64 20 74 6f 20 72 65 73 65 74 20 74 | need to reset t|
0000b990 68 65 20 74 69 6d 65 20 61 66 74 65 72 20 72 75 |he time after ru|
0000b9a0 6e 6e 69 6e 67 20 74 68 69 73 20 70 72 6f 67 72 |nning this progr|
0000b9b0 61 6d 20 62 75 74 20 68 6f 70 65 66 75 6c 6c 79 |am but hopefully|
0000b9c0 0a 79 6f 75 72 20 52 54 43 20 77 69 6c 6c 20 6b |.your RTC will k|
0000b9d0 65 65 70 20 74 68 65 20 63 6f 72 72 65 63 74 20 |eep the correct |
0000b9e0 74 69 6d 65 20 66 72 6f 6d 20 68 65 72 65 20 6f |time from here o|
0000b9f0 6e 20 69 6e 2e 0a 0a 20 20 20 49 66 20 74 68 65 |n in... If the|
0000ba00 20 73 61 6d 65 20 73 79 6d 70 74 6f 6d 73 20 70 | same symptoms p|
0000ba10 65 72 73 69 73 74 20 61 66 74 65 72 20 74 72 79 |ersist after try|
0000ba20 69 6e 67 20 74 68 69 73 20 70 72 6f 67 72 61 6d |ing this program|
0000ba30 20 63 6f 6e 74 61 63 74 20 79 6f 75 72 20 6c 6f | contact your lo|
0000ba40 63 61 6c 0a 41 63 6f 72 6e 20 64 65 61 6c 65 72 |cal.Acorn dealer|
0000ba50 20 61 73 20 73 6f 6d 65 74 68 69 6e 67 20 6d 6f | as something mo|
0000ba60 72 65 20 73 65 72 69 6f 75 73 20 68 61 73 20 67 |re serious has g|
0000ba70 6f 6e 65 20 77 72 6f 6e 67 2e 20 4e 6f 74 65 20 |one wrong. Note |
0000ba80 74 68 61 74 20 74 6f 20 63 68 65 63 6b 0a 74 68 |that to check.th|
0000ba90 61 74 20 74 68 65 20 73 79 6d 70 74 6f 6d 73 20 |at the symptoms |
0000baa0 61 72 65 20 70 65 72 73 69 73 74 69 6e 67 20 79 |are persisting y|
0000bab0 6f 75 20 2a 6d 75 73 74 2a 20 72 65 62 6f 6f 74 |ou *must* reboot|
0000bac0 20 79 6f 75 72 20 6d 61 63 68 69 6e 65 20 61 66 | your machine af|
0000bad0 74 65 72 0a 72 75 6e 6e 69 6e 67 20 74 68 69 73 |ter.running this|
0000bae0 20 70 72 6f 67 72 61 6d 20 61 6e 64 20 68 61 76 | program and hav|
0000baf0 69 6e 67 20 73 65 74 20 74 68 65 20 74 69 6d 65 |ing set the time|
0000bb00 2e 20 54 68 69 73 20 69 73 20 64 75 65 20 74 6f |. This is due to|
0000bb10 20 74 68 65 20 77 61 79 20 52 49 53 43 20 4f 53 | the way RISC OS|
0000bb20 0a 6d 61 69 6e 74 61 69 6e 73 20 61 20 27 73 6f |.maintains a 'so|
0000bb30 66 74 27 20 63 6f 70 79 20 6f 66 20 74 68 65 20 |ft' copy of the |
0000bb40 72 65 61 6c 20 74 69 6d 65 20 63 6c 6f 63 6b 20 |real time clock |
0000bb50 61 6e 64 20 75 6e 74 69 6c 20 79 6f 75 20 72 65 |and until you re|
0000bb60 62 6f 6f 74 20 69 74 20 77 69 6c 6c 0a 6e 6f 74 |boot it will.not|
0000bb70 20 62 65 20 6f 62 76 69 6f 75 73 20 77 68 65 74 | be obvious whet|
0000bb80 68 65 72 20 79 6f 75 72 20 52 54 43 20 68 61 73 |her your RTC has|
0000bb90 20 69 6e 64 65 65 64 20 73 74 61 72 74 65 64 20 | indeed started |
0000bba0 77 6f 72 6b 69 6e 67 20 61 67 61 69 6e 2e 0a 0a |working again...|
0000bbb0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000bbf0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 34 2e |------------..4.|
0000bc00 35 29 20 42 65 69 6e 67 20 6f 66 20 61 20 6e 6f |5) Being of a no|
0000bc10 6e 2d 68 75 6d 61 6e 6f 69 64 20 72 61 63 65 20 |n-humanoid race |
0000bc20 49 20 64 6f 6e 27 74 20 68 61 76 65 20 68 61 6e |I don't have han|
0000bc30 64 73 2c 20 6f 6e 6c 79 20 74 65 6e 74 61 63 6c |ds, only tentacl|
0000bc40 65 73 2e 20 41 72 65 0a 20 20 20 20 20 74 68 65 |es. Are. the|
0000bc50 72 65 20 61 6c 74 65 72 6e 61 74 69 76 65 73 20 |re alternatives |
0000bc60 74 6f 20 74 68 65 20 6b 65 79 62 6f 61 72 64 20 |to the keyboard |
0000bc70 66 6f 72 20 64 61 74 61 20 65 6e 74 72 79 20 69 |for data entry i|
0000bc80 6e 74 6f 20 41 63 6f 72 6e 20 6d 61 63 68 69 6e |nto Acorn machin|
0000bc90 65 73 3f 0a 0a 20 20 20 47 69 76 65 6e 20 74 68 |es?.. Given th|
0000bca0 65 20 70 72 65 70 6f 6e 64 65 72 61 6e 63 65 20 |e preponderance |
0000bcb0 6f 66 20 6c 69 66 65 2d 66 6f 72 6d 73 20 77 69 |of life-forms wi|
0000bcc0 74 68 20 6d 61 6e 69 70 75 6c 61 74 69 76 65 20 |th manipulative |
0000bcd0 64 69 67 69 74 73 20 61 6b 69 6e 20 74 6f 0a 74 |digits akin to.t|
0000bce0 68 65 20 6f 70 70 6f 73 61 62 6c 65 20 74 68 75 |he opposable thu|
0000bcf0 6d 62 20 73 79 73 74 65 6d 20 65 6e 6a 6f 79 65 |mb system enjoye|
0000bd00 64 20 62 79 20 68 75 6d 61 6e 73 20 6f 74 68 65 |d by humans othe|
0000bd10 72 20 6d 65 61 6e 73 20 6f 66 20 64 61 74 61 20 |r means of data |
0000bd20 65 6e 74 72 79 20 61 72 65 0a 73 6f 6d 65 77 68 |entry are.somewh|
0000bd30 61 74 20 73 63 61 72 63 65 20 6f 6e 20 74 68 65 |at scarce on the|
0000bd40 20 67 72 6f 75 6e 64 2e 20 48 6f 77 65 76 65 72 | ground. However|
0000bd50 20 69 74 20 69 73 20 72 75 6d 6f 75 72 65 64 20 | it is rumoured |
0000bd60 74 68 61 74 20 74 68 65 20 56 6f 72 6c 6f 6e 73 |that the Vorlons|
0000bd70 0a 72 65 67 75 6c 61 72 6c 79 20 75 73 65 20 52 |.regularly use R|
0000bd80 69 73 63 20 50 43 20 6d 61 63 68 69 6e 65 73 20 |isc PC machines |
0000bd90 61 6e 64 20 68 61 76 65 20 73 6f 6c 76 65 64 20 |and have solved |
0000bda0 74 68 69 73 20 74 65 63 68 6e 69 63 61 6c 20 70 |this technical p|
0000bdb0 72 6f 62 6c 65 6d 2e 20 46 6f 72 0a 66 75 72 74 |roblem. For.furt|
0000bdc0 68 65 72 20 64 65 74 61 69 6c 73 20 70 6c 65 61 |her details plea|
0000bdd0 73 65 20 63 6f 6e 74 61 63 74 20 3a 2d 0a 0a 20 |se contact :-.. |
0000bde0 20 20 4b 6f 73 68 20 4e 61 72 61 6e 65 6b 2c 0a | Kosh Naranek,.|
0000bdf0 20 20 20 56 6f 72 6c 6f 6e 20 45 6d 62 61 73 73 | Vorlon Embass|
0000be00 79 2c 0a 20 20 20 41 6d 62 61 73 73 61 64 6f 72 |y,. Ambassador|
0000be10 69 61 6c 20 57 69 6e 67 2c 0a 20 20 20 42 61 62 |ial Wing,. Bab|
0000be20 79 6c 6f 6e 20 35 2c 0a 20 20 20 54 69 67 72 69 |ylon 5,. Tigri|
0000be30 73 20 53 65 63 74 6f 72 2e 0a 20 20 20 6b 6f 73 |s Sector.. kos|
0000be40 68 40 73 70 6f 6f 6b 79 2e 76 6f 72 6c 6f 6e 2e |h@spooky.vorlon.|
0000be50 67 6f 76 20 28 48 6f 6d 65 29 0a 20 20 20 6b 6f |gov (Home). ko|
0000be60 73 68 40 76 6f 72 6c 6f 6e 2e 62 61 62 2d 6e 65 |sh@vorlon.bab-ne|
0000be70 74 2e 6d 69 6c 20 28 57 6f 72 6b 29 0a 0a 2d 2d |t.mil (Work)..--|
0000be80 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000bec0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 53 65 63 74 69 |----------.Secti|
0000bed0 6f 6e 20 35 3a 20 53 6f 66 74 77 61 72 65 20 49 |on 5: Software I|
0000bee0 73 73 75 65 73 2e 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d |ssues..---------|
0000bef0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000bf30 2d 2d 2d 0a 0a 35 2e 31 29 20 57 68 65 6e 20 75 |---..5.1) When u|
0000bf40 73 69 6e 67 20 44 4f 53 20 64 69 73 63 73 20 49 |sing DOS discs I|
0000bf50 20 6f 66 74 65 6e 20 66 69 6e 64 20 74 68 65 20 | often find the |
0000bf60 6c 61 73 74 20 70 61 72 74 73 20 6f 66 20 66 69 |last parts of fi|
0000bf70 6c 65 73 20 68 61 76 65 6e 27 74 20 62 65 65 6e |les haven't been|
0000bf80 0a 77 72 69 74 74 65 6e 20 63 6f 72 72 65 63 74 |.written correct|
0000bf90 6c 79 2c 20 77 68 61 74 20 61 6d 20 49 20 64 6f |ly, what am I do|
0000bfa0 69 6e 67 20 77 72 6f 6e 67 3f 0a 0a 20 20 20 55 |ing wrong?.. U|
0000bfb0 6e 64 65 72 20 52 49 53 43 20 4f 53 20 33 20 44 |nder RISC OS 3 D|
0000bfc0 4f 53 2c 20 61 6e 64 20 69 6e 64 65 65 64 20 77 |OS, and indeed w|
0000bfd0 69 74 68 20 61 6e 79 20 6f 74 68 65 72 20 49 6d |ith any other Im|
0000bfe0 61 67 65 46 53 20 66 69 6c 69 6e 67 20 73 79 73 |ageFS filing sys|
0000bff0 74 65 6d 2c 0a 64 69 73 63 73 20 61 72 65 20 74 |tem,.discs are t|
0000c000 72 65 61 74 65 64 20 61 73 20 6f 6e 65 20 6c 61 |reated as one la|
0000c010 72 67 65 20 66 69 6c 65 20 61 6e 64 20 41 44 46 |rge file and ADF|
0000c020 53 20 61 70 70 6c 69 65 73 20 77 72 69 74 65 2d |S applies write-|
0000c030 62 65 68 69 6e 64 20 63 61 63 68 69 6e 67 20 74 |behind caching t|
0000c040 6f 0a 6e 65 61 72 6c 79 20 65 76 65 72 79 74 68 |o.nearly everyth|
0000c050 69 6e 67 20 69 74 20 64 6f 65 73 2e 20 28 53 65 |ing it does. (Se|
0000c060 65 20 74 68 65 20 71 75 65 73 74 69 6f 6e 20 6f |e the question o|
0000c070 6e 20 41 44 46 53 42 75 66 66 65 72 73 20 66 6f |n ADFSBuffers fo|
0000c080 72 20 6d 6f 72 65 20 64 65 74 61 69 6c 73 0a 61 |r more details.a|
0000c090 62 6f 75 74 20 74 68 69 73 2e 29 20 54 68 69 73 |bout this.) This|
0000c0a0 20 6d 65 61 6e 73 20 77 68 69 6c 65 20 77 6f 72 | means while wor|
0000c0b0 6b 69 6e 67 20 6f 6e 20 61 20 44 4f 53 20 64 69 |king on a DOS di|
0000c0c0 73 63 20 74 68 65 20 65 6e 74 69 72 65 20 64 69 |sc the entire di|
0000c0d0 73 63 20 69 73 0a 74 72 65 61 74 65 64 20 61 73 |sc is.treated as|
0000c0e0 20 6f 6e 65 20 6c 61 72 67 65 20 6f 70 65 6e 20 | one large open |
0000c0f0 66 69 6c 65 2e 0a 0a 20 20 20 48 6f 77 65 76 65 |file... Howeve|
0000c100 72 20 61 73 20 6c 6f 6e 67 20 61 73 20 61 20 66 |r as long as a f|
0000c110 69 6c 65 20 69 73 20 68 65 6c 64 20 6f 70 65 6e |ile is held open|
0000c120 20 74 68 65 20 63 61 63 68 65 20 69 73 20 6e 6f | the cache is no|
0000c130 74 20 66 6c 75 73 68 65 64 20 6f 75 74 20 66 75 |t flushed out fu|
0000c140 6c 6c 79 0a 74 69 6c 6c 20 74 68 65 20 6d 61 63 |lly.till the mac|
0000c150 68 69 6e 65 20 69 73 20 65 78 70 6c 69 63 69 74 |hine is explicit|
0000c160 6c 79 20 74 6f 6c 64 20 74 6f 20 64 6f 20 73 6f |ly told to do so|
0000c170 2e 20 54 68 69 73 20 6d 65 61 6e 73 20 77 68 65 |. This means whe|
0000c180 6e 20 77 6f 72 6b 69 6e 67 20 77 69 74 68 0a 6e |n working with.n|
0000c190 6f 6e 2d 41 44 46 53 20 66 6f 72 6d 61 74 20 64 |on-ADFS format d|
0000c1a0 69 73 63 73 20 2a 61 6c 77 61 79 73 2a 20 64 69 |iscs *always* di|
0000c1b0 73 6d 6f 75 6e 74 20 74 68 65 6d 20 62 65 66 6f |smount them befo|
0000c1c0 72 65 20 72 65 6d 6f 76 69 6e 67 20 74 68 65 6d |re removing them|
0000c1d0 20 66 72 6f 6d 20 74 68 65 0a 64 72 69 76 65 2e | from the.drive.|
0000c1e0 20 57 69 74 68 20 41 44 46 53 20 66 6f 72 6d 61 | With ADFS forma|
0000c1f0 74 20 64 69 73 63 73 20 74 68 69 73 20 69 73 20 |t discs this is |
0000c200 6e 6f 74 20 73 6f 20 63 72 69 74 69 63 61 6c 2c |not so critical,|
0000c210 20 61 73 20 66 69 6c 65 73 20 61 72 65 6e 27 74 | as files aren't|
0000c220 20 68 65 6c 64 0a 6f 70 65 6e 20 64 75 72 69 6e | held.open durin|
0000c230 67 20 6d 6f 73 74 20 6f 70 65 72 61 74 69 6f 6e |g most operation|
0000c240 73 20 6f 6e 20 74 68 65 6d 2c 20 62 75 74 20 69 |s on them, but i|
0000c250 74 20 69 73 20 67 6f 6f 64 20 74 6f 20 67 65 74 |t is good to get|
0000c260 20 69 6e 74 6f 20 74 68 65 20 68 61 62 69 74 20 | into the habit |
0000c270 6f 66 0a 64 69 73 6d 6f 75 6e 74 69 6e 67 20 66 |of.dismounting f|
0000c280 6c 6f 70 70 79 20 64 69 73 63 73 2e 0a 0a 2d 2d |loppy discs...--|
0000c290 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000c2d0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 35 2e 32 29 |----------..5.2)|
0000c2e0 20 49 20 68 61 76 65 20 6f 62 74 61 69 6e 65 64 | I have obtained|
0000c2f0 20 5b 50 44 5d 20 70 72 6f 67 72 61 6d 20 58 20 | [PD] program X |
0000c300 62 75 74 20 66 69 6e 64 20 69 74 20 6e 65 65 64 |but find it need|
0000c310 73 20 5b 76 65 72 73 69 6f 6e 20 59 2e 59 59 20 |s [version Y.YY |
0000c320 6f 66 5d 0a 20 20 20 20 20 6d 6f 64 75 6c 65 20 |of]. module |
0000c330 5a 2c 20 77 68 69 63 68 20 49 20 64 6f 6e 27 74 |Z, which I don't|
0000c340 20 68 61 76 65 2e 20 57 68 65 72 65 20 63 61 6e | have. Where can|
0000c350 20 49 20 67 65 74 20 69 74 3f 0a 0a 20 20 20 41 | I get it?.. A|
0000c360 6c 6c 20 70 61 74 63 68 20 6d 6f 64 75 6c 65 73 |ll patch modules|
0000c370 2c 20 6f 66 66 69 63 69 61 6c 20 41 63 6f 72 6e |, official Acorn|
0000c380 20 4f 53 20 65 78 74 65 6e 73 69 6f 6e 73 20 61 | OS extensions a|
0000c390 6e 64 20 74 68 65 20 6c 69 6b 65 20 63 61 6e 20 |nd the like can |
0000c3a0 62 65 0a 73 6f 75 72 63 65 64 20 66 72 6f 6d 20 |be.sourced from |
0000c3b0 74 68 65 20 41 63 6f 72 6e 20 66 74 70 20 73 69 |the Acorn ftp si|
0000c3c0 74 65 2e 20 49 64 65 61 6c 6c 79 20 79 6f 75 72 |te. Ideally your|
0000c3d0 20 64 65 61 6c 65 72 20 77 69 6c 6c 20 61 6c 73 | dealer will als|
0000c3e0 6f 20 68 61 76 65 20 63 6f 70 69 65 73 0a 6f 66 |o have copies.of|
0000c3f0 20 74 68 65 6d 20 74 6f 6f 20 61 6e 64 20 79 6f | them too and yo|
0000c400 75 20 73 68 6f 75 6c 64 20 62 65 20 61 62 6c 65 |u should be able|
0000c410 20 74 6f 20 6f 62 74 61 69 6e 20 74 68 65 6d 20 | to obtain them |
0000c420 66 72 6f 6d 20 74 68 65 6d 2e 20 28 49 66 20 74 |from them. (If t|
0000c430 68 65 79 20 64 6f 6e 27 74 0a 79 6f 75 20 6d 61 |hey don't.you ma|
0000c440 79 20 6c 69 6b 65 20 74 6f 20 70 61 73 73 20 6f |y like to pass o|
0000c450 6e 20 74 68 65 20 6f 6e 65 73 20 66 72 6f 6d 20 |n the ones from |
0000c460 74 68 65 20 66 74 70 20 73 69 74 65 2c 20 69 66 |the ftp site, if|
0000c470 20 79 6f 75 20 72 65 71 75 65 73 74 20 74 68 65 | you request the|
0000c480 6d 2c 20 73 6f 0a 74 68 61 74 20 74 68 65 79 20 |m, so.that they |
0000c490 61 72 65 20 75 70 20 74 6f 2d 64 61 74 65 2e 29 |are up to-date.)|
0000c4a0 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |..--------------|
0000c4b0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000c4e0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a |--------------..|
0000c4f0 35 2e 33 29 20 57 68 61 74 20 69 73 20 74 68 65 |5.3) What is the|
0000c500 20 63 75 72 72 65 6e 74 20 46 69 6c 65 2d 74 79 | current File-ty|
0000c510 70 65 20 61 6c 6c 6f 63 61 74 69 6f 6e 20 72 61 |pe allocation ra|
0000c520 6e 67 65 73 20 61 6e 64 20 77 68 79 20 77 6f 6e |nges and why won|
0000c530 27 74 20 41 63 6f 72 6e 0a 20 20 20 20 20 70 72 |'t Acorn. pr|
0000c540 6f 76 69 64 65 20 61 20 66 75 6c 6c 20 66 69 6c |ovide a full fil|
0000c550 65 2d 74 79 70 65 20 6c 69 73 74 3f 0a 0a 20 20 |e-type list?.. |
0000c560 20 41 63 6f 72 6e 20 68 61 76 65 20 72 65 61 6c | Acorn have real|
0000c570 6c 6f 63 61 74 65 64 20 74 68 65 20 46 69 6c 65 |located the File|
0000c580 2d 74 79 70 65 20 72 61 6e 67 65 73 20 66 6f 72 |-type ranges for|
0000c590 20 61 70 70 6c 69 63 61 74 69 6f 6e 73 2e 20 54 | applications. T|
0000c5a0 68 65 20 6e 65 77 0a 72 61 6e 67 65 73 20 61 72 |he new.ranges ar|
0000c5b0 65 20 3a 2d 0a 0a 20 20 4e 6f 6e 2d 75 73 65 72 |e :-.. Non-user|
0000c5c0 20 61 72 65 61 0a 0a 20 20 20 20 26 45 30 30 2d | area.. &E00-|
0000c5d0 26 46 46 46 20 20 20 41 63 6f 72 6e 0a 20 20 20 |&FFF Acorn. |
0000c5e0 20 26 42 30 30 2d 26 44 46 46 20 20 20 43 6f 6d | &B00-&DFF Com|
0000c5f0 6d 65 72 63 69 61 6c 20 73 6f 66 74 77 61 72 65 |mercial software|
0000c600 0a 20 20 20 20 26 41 30 30 2d 26 41 46 46 20 20 |. &A00-&AFF |
0000c610 20 41 63 6f 72 6e 73 6f 66 74 2c 20 61 6e 64 20 | Acornsoft, and |
0000c620 6f 74 68 65 72 20 63 6f 6d 6d 65 72 63 69 61 6c |other commercial|
0000c630 20 73 6f 66 74 77 61 72 65 0a 20 20 20 20 26 34 | software. &4|
0000c640 30 30 2d 26 39 46 46 20 20 20 43 6f 6d 6d 65 72 |00-&9FF Commer|
0000c650 63 69 61 6c 20 53 6f 66 74 77 61 72 65 0a 0a 20 |cial Software.. |
0000c660 20 55 73 65 72 20 61 72 65 61 0a 0a 20 20 20 20 | User area.. |
0000c670 26 31 30 30 2d 26 33 46 46 20 20 20 4e 6f 6e 2d |&100-&3FF Non-|
0000c680 63 6f 6d 6d 65 72 63 69 61 6c 20 64 69 73 74 72 |commercial distr|
0000c690 69 62 75 74 65 64 20 73 6f 66 74 77 61 72 65 20 |ibuted software |
0000c6a0 28 69 65 20 50 44 29 0a 20 20 20 20 26 30 30 30 |(ie PD). &000|
0000c6b0 2d 26 30 46 46 20 20 20 55 73 65 72 27 73 20 70 |-&0FF User's p|
0000c6c0 65 72 73 6f 6e 61 6c 20 75 73 61 67 65 20 28 69 |ersonal usage (i|
0000c6d0 65 20 6e 6f 6e 2d 64 69 73 74 72 69 62 75 74 65 |e non-distribute|
0000c6e0 64 29 0a 0a 37 35 25 20 6f 66 20 74 68 65 20 75 |d)..75% of the u|
0000c6f0 73 65 72 20 61 72 65 61 20 69 73 20 66 6f 72 20 |ser area is for |
0000c700 50 44 2f 53 68 61 72 65 77 61 72 65 2c 20 77 69 |PD/Shareware, wi|
0000c710 74 68 20 61 6c 6c 6f 63 61 74 69 6f 6e 73 20 63 |th allocations c|
0000c720 6f 2d 6f 72 64 69 6e 61 74 65 64 20 62 79 0a 41 |o-ordinated by.A|
0000c730 63 6f 72 6e 2e 20 49 66 20 79 6f 75 72 20 73 6f |corn. If your so|
0000c740 66 74 77 61 72 65 20 69 73 20 67 6f 69 6e 67 20 |ftware is going |
0000c750 74 6f 20 62 65 20 64 69 73 74 72 69 62 75 74 65 |to be distribute|
0000c760 64 2c 20 79 6f 75 20 73 68 6f 75 6c 64 20 68 61 |d, you should ha|
0000c770 76 65 20 61 6e 0a 61 6c 6c 6f 63 61 74 65 64 20 |ve an.allocated |
0000c780 66 69 6c 65 74 79 70 65 20 74 6f 20 61 76 6f 69 |filetype to avoi|
0000c790 64 20 63 6c 61 73 68 65 73 2e 0a 0a 20 20 20 41 |d clashes... A|
0000c7a0 63 6f 72 6e 20 63 61 6e 6e 6f 74 20 70 75 62 6c |corn cannot publ|
0000c7b0 69 73 68 20 69 74 27 73 20 6d 61 73 74 65 72 20 |ish it's master |
0000c7c0 6c 69 73 74 20 6f 66 20 66 69 6c 65 74 79 70 65 |list of filetype|
0000c7d0 73 20 62 65 63 61 75 73 65 2c 20 61 74 20 61 6e |s because, at an|
0000c7e0 79 20 67 69 76 65 6e 0a 74 69 6d 65 2c 20 69 74 |y given.time, it|
0000c7f0 20 77 69 6c 6c 20 63 6f 6e 74 61 69 6e 20 61 6c | will contain al|
0000c800 6c 6f 63 61 74 69 6f 6e 73 20 6d 61 64 65 20 66 |locations made f|
0000c810 6f 72 20 70 72 6f 64 75 63 74 73 20 77 68 69 63 |or products whic|
0000c820 68 20 68 61 76 65 20 6e 6f 74 20 79 65 74 20 62 |h have not yet b|
0000c830 65 65 6e 0a 61 6e 6e 6f 75 6e 63 65 64 2e 20 54 |een.announced. T|
0000c840 68 65 72 65 66 6f 72 65 2c 20 41 63 6f 72 6e 20 |herefore, Acorn |
0000c850 77 6f 75 6c 64 20 62 65 20 69 6e 20 62 72 65 61 |would be in brea|
0000c860 63 68 20 6f 66 20 63 6f 6e 66 69 64 65 6e 63 65 |ch of confidence|
0000c870 20 62 79 20 64 6f 69 6e 67 20 73 6f 20 2d 0a 61 | by doing so -.a|
0000c880 6e 64 20 74 68 65 20 65 64 69 74 69 6e 67 20 6f |nd the editing o|
0000c890 76 65 72 68 65 61 64 20 66 6f 72 20 70 72 6f 64 |verhead for prod|
0000c8a0 75 63 69 6e 67 20 61 20 73 61 6e 69 74 69 73 65 |ucing a sanitise|
0000c8b0 64 20 6c 69 73 74 20 69 73 20 74 6f 6f 20 67 72 |d list is too gr|
0000c8c0 65 61 74 2e 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |eat...----------|
0000c8d0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000c910 2d 2d 0a 0a 35 2e 34 29 20 49 73 20 74 68 65 72 |--..5.4) Is ther|
0000c920 65 20 61 20 4d 6f 64 75 6c 61 20 32 20 63 6f 6d |e a Modula 2 com|
0000c930 70 69 6c 65 72 20 66 6f 72 20 74 68 65 20 41 72 |piler for the Ar|
0000c940 63 3f 0a 0a 20 20 20 43 75 72 72 65 6e 74 6c 79 |c?.. Currently|
0000c950 2c 20 6e 6f 2e 20 41 63 6f 72 6e 20 64 69 64 20 |, no. Acorn did |
0000c960 68 61 76 65 2c 20 69 6e 20 74 68 65 20 65 61 72 |have, in the ear|
0000c970 6c 79 20 64 61 79 73 20 6f 66 20 74 68 65 20 65 |ly days of the e|
0000c980 78 70 65 72 69 6d 65 6e 74 61 6c 20 41 52 4d 0a |xperimental ARM.|
0000c990 77 6f 72 6b 2c 20 61 6e 20 69 6e 20 68 6f 75 73 |work, an in hous|
0000c9a0 65 20 63 6f 6d 70 69 6c 65 72 2e 20 48 6f 77 65 |e compiler. Howe|
0000c9b0 76 65 72 20 74 68 69 73 20 63 6f 6d 70 69 6c 65 |ver this compile|
0000c9c0 72 20 77 61 73 20 73 75 66 66 69 63 69 65 6e 74 |r was sufficient|
0000c9d0 6c 79 20 75 6e 73 74 61 62 6c 65 0a 61 6e 64 20 |ly unstable.and |
0000c9e0 62 75 67 67 79 20 74 6f 20 62 65 20 75 6e 72 65 |buggy to be unre|
0000c9f0 6c 65 61 73 61 62 6c 65 20 61 73 20 63 6f 6d 6d |leasable as comm|
0000ca00 65 72 63 69 61 6c 20 70 72 6f 64 75 63 74 20 61 |ercial product a|
0000ca10 6e 64 20 77 61 73 20 6f 6e 6c 79 20 75 73 65 64 |nd was only used|
0000ca20 20 62 65 63 61 75 73 65 0a 69 6e 20 68 6f 75 73 | because.in hous|
0000ca30 65 20 73 75 70 70 6f 72 74 20 77 61 73 20 61 76 |e support was av|
0000ca40 61 69 6c 61 62 6c 65 20 69 6d 6d 65 64 69 61 74 |ailable immediat|
0000ca50 65 6c 79 20 74 6f 20 74 68 65 20 75 73 65 72 73 |ely to the users|
0000ca60 20 6f 66 20 74 68 65 20 63 6f 6d 70 69 6c 65 72 | of the compiler|
0000ca70 2e 0a 57 68 65 6e 20 4f 6c 69 76 65 74 74 69 20 |..When Olivetti |
0000ca80 69 6e 76 65 73 74 65 64 20 69 6e 20 41 63 6f 72 |invested in Acor|
0000ca90 6e 20 74 68 69 73 20 74 65 63 68 6e 6f 6c 6f 67 |n this technolog|
0000caa0 79 20 77 65 6e 74 20 74 6f 20 74 68 65 6d 20 73 |y went to them s|
0000cab0 6f 20 74 68 61 74 20 41 63 6f 72 6e 0a 6e 6f 20 |o that Acorn.no |
0000cac0 6c 6f 6e 67 65 72 20 68 61 76 65 20 65 76 65 6e |longer have even|
0000cad0 20 61 6e 20 69 6e 20 68 6f 75 73 65 20 4d 6f 64 | an in house Mod|
0000cae0 75 6c 61 20 32 20 63 6f 6d 70 69 6c 65 72 2e 0a |ula 2 compiler..|
0000caf0 0a 20 20 20 48 6f 77 65 76 65 72 20 73 6f 6d 65 |. However some|
0000cb00 20 63 6f 6d 70 61 6e 69 65 73 20 68 61 76 65 20 | companies have |
0000cb10 73 74 61 74 65 64 20 69 6e 74 65 6e 74 69 6f 6e |stated intention|
0000cb20 73 20 74 6f 20 70 72 6f 64 75 63 65 20 4d 6f 64 |s to produce Mod|
0000cb30 75 6c 61 20 32 0a 63 6f 6d 70 69 6c 65 72 73 20 |ula 2.compilers |
0000cb40 66 6f 72 20 74 68 65 20 41 72 63 2e 20 57 68 65 |for the Arc. Whe|
0000cb50 74 68 65 72 20 74 68 65 73 65 20 69 6e 74 65 6e |ther these inten|
0000cb60 74 69 6f 6e 73 20 62 65 63 6f 6d 65 20 72 65 61 |tions become rea|
0000cb70 6c 69 74 79 20 68 61 73 20 79 65 74 20 74 6f 20 |lity has yet to |
0000cb80 62 65 0a 73 65 65 6e 2e 0a 0a 2d 2d 2d 2d 2d 2d |be.seen...------|
0000cb90 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000cbd0 2d 2d 2d 2d 2d 2d 0a 0a 35 2e 35 29 20 57 68 61 |------..5.5) Wha|
0000cbe0 74 20 76 65 72 73 69 6f 6e 20 6f 66 20 6d 6f 64 |t version of mod|
0000cbf0 75 6c 65 20 58 20 63 61 6e 20 49 20 61 73 73 75 |ule X can I assu|
0000cc00 6d 65 20 74 68 61 74 20 61 6c 6c 20 75 73 65 72 |me that all user|
0000cc10 73 20 68 61 76 65 3f 0a 0a 20 20 20 43 75 72 72 |s have?.. Curr|
0000cc20 65 6e 74 6c 79 20 74 68 65 20 76 65 72 73 69 6f |ently the versio|
0000cc30 6e 20 6e 75 6d 62 65 72 73 20 61 72 65 20 3a 2d |n numbers are :-|
0000cc40 0a 20 20 20 43 6c 69 62 20 20 20 20 20 20 20 20 |. Clib |
0000cc50 76 33 2e 37 35 0a 20 20 20 43 6f 6c 6f 75 72 73 |v3.75. Colours|
0000cc60 20 20 20 20 20 76 30 2e 35 32 0a 20 20 20 46 50 | v0.52. FP|
0000cc70 45 6d 75 6c 61 74 6f 72 20 20 76 32 2e 38 30 0a |Emulator v2.80.|
0000cc80 20 20 20 49 52 51 55 74 69 6c 73 20 20 20 20 76 | IRQUtils v|
0000cc90 30 2e 31 32 0a 20 20 20 48 6f 75 72 67 6c 61 73 |0.12. Hourglas|
0000cca0 73 20 20 20 76 32 2e 30 32 0a 20 20 20 53 6f 75 |s v2.02. Sou|
0000ccb0 6e 64 20 20 20 20 20 20 20 76 31 2e 31 33 0a 20 |nd v1.13. |
0000ccc0 20 20 57 69 6d 70 55 74 69 6c 73 20 20 20 76 30 | WimpUtils v0|
0000ccd0 2e 30 34 0a 0a 20 20 20 41 6c 6c 20 6f 66 20 74 |.04.. All of t|
0000cce0 68 65 73 65 20 6d 6f 64 75 6c 65 73 20 61 72 65 |hese modules are|
0000ccf0 20 6f 6e 6c 79 20 6e 65 65 64 65 64 20 69 66 20 | only needed if |
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0000cd10 6e 67 20 79 6f 75 72 0a 61 70 70 6c 69 63 61 74 |ng your.applicat|
0000cd20 69 6f 6e 73 20 6f 6e 20 52 49 53 43 20 4f 53 20 |ions on RISC OS |
0000cd30 32 20 6d 61 63 68 69 6e 65 73 2e 20 54 68 65 20 |2 machines. The |
0000cd40 66 75 6e 63 74 69 6f 6e 61 6c 69 74 79 20 6f 66 |functionality of|
0000cd50 20 61 6c 6c 20 74 68 65 73 65 20 6d 6f 64 75 6c | all these modul|
0000cd60 65 0a 76 65 72 73 69 6f 6e 73 20 68 61 76 65 20 |e.versions have |
0000cd70 62 65 65 6e 20 69 6e 63 6f 72 70 6f 72 61 74 65 |been incorporate|
0000cd80 64 20 69 6e 74 6f 20 52 4f 4d 20 75 6e 64 65 72 |d into ROM under|
0000cd90 20 52 49 53 43 20 4f 53 20 33 2e 0a 0a 2d 2d 2d | RISC OS 3...---|
0000cda0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000cde0 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 35 2e 36 29 20 |---------..5.6) |
0000cdf0 57 68 61 74 27 73 20 74 68 65 20 6d 69 6e 69 6d |What's the minim|
0000ce00 75 6d 20 76 65 72 73 69 6f 6e 20 6f 66 20 6d 6f |um version of mo|
0000ce10 64 75 6c 65 20 58 20 74 68 61 74 20 6d 79 20 70 |dule X that my p|
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0000ce30 61 74 0a 20 20 20 20 20 66 65 61 74 75 72 65 73 |at. features|
0000ce40 20 77 65 72 65 20 69 6e 74 72 6f 64 75 63 65 64 | were introduced|
0000ce50 2f 77 68 61 74 20 62 75 67 73 20 77 65 72 65 20 |/what bugs were |
0000ce60 66 69 78 65 64 20 69 6e 20 77 68 69 63 68 20 76 |fixed in which v|
0000ce70 65 72 73 69 6f 6e 73 3f 0a 0a 20 20 20 54 68 65 |ersions?.. The|
0000ce80 73 65 20 64 65 74 61 69 6c 73 20 77 69 6c 6c 20 |se details will |
0000ce90 63 6f 6d 65 20 77 69 74 68 20 74 68 65 20 72 65 |come with the re|
0000cea0 6c 65 61 73 65 20 6e 6f 74 65 73 20 61 63 63 6f |lease notes acco|
0000ceb0 6d 70 61 6e 79 69 6e 67 20 74 68 65 20 6d 6f 64 |mpanying the mod|
0000cec0 75 6c 65 0a 61 6e 64 20 74 68 65 20 70 61 72 74 |ule.and the part|
0000ced0 69 63 75 6c 61 72 20 70 72 6f 67 72 61 6d 2c 20 |icular program, |
0000cee0 69 66 20 70 72 6f 70 65 72 6c 79 20 64 6f 6e 65 |if properly done|
0000cef0 2c 20 77 69 6c 6c 20 69 6e 66 6f 72 6d 20 79 6f |, will inform yo|
0000cf00 75 20 6f 66 20 77 68 69 63 68 0a 76 65 72 73 69 |u of which.versi|
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0000cf20 65 20 79 6f 75 20 6e 65 65 64 20 61 73 20 72 65 |e you need as re|
0000cf30 71 75 69 72 65 64 2e 0a 2d 2d 2d 2d 2d 2d 2d 2d |quired..--------|
0000cf40 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
0000cf80 2d 2d 2d 2d 0a 0a 35 2e 37 29 20 57 68 61 74 20 |----..5.7) What |
0000cf90 50 75 62 6c 69 63 20 44 6f 6d 61 69 6e 20 4c 61 |Public Domain La|
0000cfa0 6e 67 75 61 67 65 73 20 61 72 65 20 61 76 61 69 |nguages are avai|
0000cfb0 6c 61 62 6c 65 20 66 6f 72 20 41 63 6f 72 6e 20 |lable for Acorn |
0000cfc0 6d 61 63 68 69 6e 65 73 3f 0a 0a 20 20 20 54 68 |machines?.. Th|
0000cfd0 65 20 61 6e 73 77 65 72 20 74 6f 20 74 68 69 73 |e answer to this|
0000cfe0 20 69 73 20 61 20 6c 69 73 74 20 74 68 61 74 20 | is a list that |
0000cff0 69 73 20 6d 61 69 6e 74 61 69 6e 65 64 20 62 79 |is maintained by|
0000d000 20 47 61 76 69 6e 20 57 72 61 69 74 68 20 3c 47 | Gavin Wraith <G|
0000d010 2e 57 72 61 69 74 68 40 73 75 73 73 65 78 2e 61 |.Wraith@sussex.a|
0000d020 63 2e 75 6b 3e 2e 20 41 63 63 6f 72 64 69 6e 67 |c.uk>. According|
0000d030 6c 79 20 75 70 64 61 74 65 73 2c 20 63 6f 72 72 |ly updates, corr|
0000d040 65 63 74 69 6f 6e 73 20 61 6e 64 20 6f 74 68 65 |ections and othe|
0000d050 72 20 63 6f 6d 6d 65 6e 74 73 20 73 68 6f 75 6c |r comments shoul|
0000d060 64 20 61 6c 6c 20 62 65 20 73 65 6e 74 20 74 6f |d all be sent to|
0000d070 20 68 69 6d 2e 0a 0a 2a 2a 2a 2a 2a 2a 2a 2a 20 | him...******** |
0000d080 50 44 20 4c 61 6e 67 75 61 67 65 73 20 66 6f 72 |PD Languages for|
0000d090 20 52 69 73 63 20 4f 53 20 2a 2a 2a 2a 2a 2a 2a | Risc OS *******|
0000d0a0 2a 2a 2a 2a 0a 0a 56 65 72 73 69 6f 6e 20 33 2e |****..Version 3.|
0000d0b0 0a 0a 55 70 64 61 74 65 73 3a 20 20 41 64 61 2c |..Updates: Ada,|
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0000d0d0 65 72 6c 0a 0a 4f 6e 20 74 68 65 20 75 73 65 6e |erl..On the usen|
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0000d100 20 72 65 67 75 6c 61 72 6c 79 20 70 6f 73 74 65 | regularly poste|
0000d110 64 20 61 6e 0a 61 72 63 68 69 76 65 20 6f 66 20 |d an.archive of |
0000d120 50 44 20 63 6f 6d 70 69 6c 65 72 73 20 61 6e 64 |PD compilers and|
0000d130 20 69 6e 74 65 72 70 72 65 74 65 72 73 20 28 61 | interpreters (a|
0000d140 62 6f 75 74 20 33 37 33 4b 27 73 20 77 6f 72 74 |bout 373K's wort|
0000d150 68 20 6f 66 20 0a 69 6e 66 6f 72 6d 61 74 69 6f |h of .informatio|
0000d160 6e 29 20 62 79 20 44 2e 53 68 61 72 6e 6f 66 66 |n) by D.Sharnoff|
0000d170 20 61 6e 64 20 41 2e 52 6f 62 65 6e 61 6c 74 2e | and A.Robenalt.|
0000d180 20 20 45 6e 71 75 69 72 69 65 73 20 74 6f 20 0a | Enquiries to .|
0000d190 63 6f 6d 70 69 6c 65 72 73 2d 72 65 71 75 65 73 |compilers-reques|
0000d1a0 74 40 69 65 63 63 2e 63 6f 6d 20 2e 0a 0a 48 65 |t@iecc.com ...He|
0000d1b0 72 65 20 69 73 20 61 6e 20 69 6e 63 6f 6d 70 6c |re is an incompl|
0000d1c0 65 74 65 20 6c 69 73 74 20 6f 66 20 50 44 20 70 |ete list of PD p|
0000d1d0 72 6f 67 72 61 6d 6d 69 6e 67 20 6c 61 6e 67 75 |rogramming langu|
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0000d1f0 6f 72 20 52 69 73 63 20 4f 53 20 6d 61 63 68 69 |or Risc OS machi|
0000d200 6e 65 73 2c 20 77 69 74 68 20 62 72 69 65 66 20 |nes, with brief |
0000d210 63 6f 6d 6d 65 6e 74 73 20 28 6e 6f 20 66 6c 61 |comments (no fla|
0000d220 6d 65 73 20 70 6c 65 61 73 65 29 2e 0a 49 66 20 |mes please)..If |
0000d230 79 6f 75 20 74 68 69 6e 6b 20 49 20 68 61 76 65 |you think I have|
0000d240 20 6f 6d 69 74 74 65 64 20 61 20 73 69 67 6e 69 | omitted a signi|
0000d250 66 69 63 61 6e 74 20 69 74 65 6d 2c 20 49 20 77 |ficant item, I w|
0000d260 69 6c 6c 20 62 65 20 67 72 61 74 65 66 75 6c 0a |ill be grateful.|
0000d270 74 6f 20 68 65 61 72 20 61 62 6f 75 74 20 69 74 |to hear about it|
0000d280 2e 20 4d 79 20 74 68 61 6e 6b 73 20 74 6f 20 4b |. My thanks to K|
0000d290 65 76 69 6e 20 51 75 69 6e 6e 20 61 6e 64 20 53 |evin Quinn and S|
0000d2a0 69 6d 6f 6e 20 43 61 6c 6c 61 6e 20 66 6f 72 20 |imon Callan for |
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0000d2f0 6f 6d 0a 0a 20 20 20 20 6d 69 63 72 6f 73 2e 68 |om.. micros.h|
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0000d310 73 2f 61 72 63 68 2f 72 69 73 63 6f 73 2f 3c 64 |s/arch/riscos/<d|
0000d320 69 72 6e 61 6d 65 3e 0a 0a 77 68 65 72 65 20 3c |irname>..where <|
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0000d340 70 65 63 69 66 69 65 64 20 62 65 6c 6f 77 2e 0a |pecified below..|
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0000d370 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 43 68 61 72 |----------..Char|
0000d380 6d 20 2d 20 41 20 50 61 73 63 61 6c 20 6c 69 6b |m - A Pascal lik|
0000d390 65 20 63 6f 6d 70 69 6c 65 64 20 6c 61 6e 67 75 |e compiled langu|
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*
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*
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*
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0000f470 69 6e 65 61 70 70 6c 65 0a 53 6f 66 74 77 61 72 |ineapple.Softwar|
0000f480 65 2e 20 57 68 6f 20 63 61 6e 20 62 65 20 72 65 |e. Who can be re|
0000f490 61 63 68 65 64 20 61 74 3a 2d 0a 0a 20 20 33 39 |ached at:-.. 39|
0000f4a0 20 42 72 6f 77 6e 6c 65 61 20 47 61 72 64 65 6e | Brownlea Garden|
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0000f4d0 33 20 39 4e 4c 0a 20 20 54 65 6c 2e 20 2b 34 34 |3 9NL. Tel. +44|
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0000f530 6b 0a 20 20 73 75 70 70 6f 72 74 40 70 69 6e 65 |k. support@pine|
0000f540 73 6f 66 74 2e 64 65 6d 6f 6e 2e 63 6f 2e 75 6b |soft.demon.co.uk|
0000f550 0a 0a 45 61 72 6c 79 20 76 65 72 73 69 6f 6e 73 |..Early versions|
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0000f570 65 20 50 44 2c 20 62 75 74 20 73 68 6f 75 6c 64 |e PD, but should|
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0000f5a0 66 66 65 63 74 69 76 65 20 61 67 61 69 6e 73 74 |ffective against|
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0000f5c0 20 76 69 72 75 73 65 73 20 74 68 61 74 20 68 61 | viruses that ha|
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*
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0000f740 69 6c 20 73 65 72 76 65 72 20 61 74 20 4d 49 54 |il server at MIT|
0000f750 2e 0a 0a 54 6f 20 72 65 71 75 65 73 74 20 69 74 |...To request it|
0000f760 20 66 72 6f 6d 20 74 68 69 73 20 73 65 72 76 65 | from this serve|
0000f770 72 20 73 65 6e 64 20 61 6e 20 65 6d 61 69 6c 20 |r send an email |
0000f780 74 6f 20 6d 61 69 6c 2d 73 65 72 76 65 72 40 72 |to mail-server@r|
0000f790 74 66 6d 2e 6d 69 74 2e 65 64 75 2e 20 4e 6f 0a |tfm.mit.edu. No.|
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*
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*
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000118c0 6f 64 69 63 6c 79 20 62 79 20 6d 79 73 65 6c 66 |odicly by myself|
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00011b70 20 74 6f 20 61 20 76 61 72 69 65 74 79 20 6f 66 | to a variety of|
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00011ba0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00011be0 2d 2d 2d 2d 0a 0a 20 20 20 54 68 61 6e 6b 73 20 |----.. Thanks |
00011bf0 67 6f 20 74 6f 20 61 6c 6c 20 74 68 65 20 70 65 |go to all the pe|
00011c00 6f 70 6c 65 20 77 68 6f 20 68 61 76 65 20 63 6f |ople who have co|
00011c10 6e 74 72 69 62 75 74 65 64 20 63 6f 72 72 65 63 |ntributed correc|
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00011c30 6f 6e 73 20 74 6f 20 74 68 65 20 6c 69 73 74 2e |ons to the list.|
00011c40 20 57 69 74 68 6f 75 74 20 74 68 69 73 20 68 65 | Without this he|
00011c50 6c 70 20 74 68 69 73 20 6c 69 73 74 20 77 6f 75 |lp this list wou|
00011c60 6c 64 20 62 65 20 61 20 68 65 6c 6c 20 6f 66 20 |ld be a hell of |
00011c70 61 6c 6f 74 0a 62 75 67 67 69 65 72 20 28 73 70 |alot.buggier (sp|
00011c80 6f 74 20 74 68 65 20 70 72 6f 67 72 61 6d 6d 65 |ot the programme|
00011c90 72 2e 2e 2e 20 3a 2d 29 20 29 20 74 68 61 6e 20 |r... :-) ) than |
00011ca0 69 74 20 69 73 2e 2e 2e 0a 0a 2d 2d 2d 2d 2d 2d |it is.....------|
00011cb0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00011cf0 2d 2d 2d 2d 2d 2d 0a 0a 41 6c 6c 20 61 64 64 69 |------..All addi|
00011d00 74 69 6f 6e 73 2c 20 63 6f 72 72 65 63 74 69 6f |tions, correctio|
00011d10 6e 73 20 26 20 73 75 67 67 65 73 74 69 6f 6e 73 |ns & suggestions|
00011d20 20 66 6f 72 20 74 68 65 20 46 41 51 20 4c 69 73 | for the FAQ Lis|
00011d30 74 20 73 68 6f 75 6c 64 20 62 65 20 73 65 6e 74 |t should be sent|
00011d40 20 74 6f 0a 20 20 20 20 20 20 20 20 20 20 20 20 | to. |
00011d50 20 20 20 20 2d 3d 3e 20 62 61 6e 6b 73 5f 70 40 | -=> banks_p@|
00011d60 6b 6f 73 6d 6f 73 2e 77 63 63 2e 67 6f 76 74 2e |kosmos.wcc.govt.|
00011d70 6e 7a 20 3c 3d 2d 0a 42 65 69 6e 67 20 74 68 65 |nz <=-.Being the|
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00011d90 68 69 73 20 46 41 51 20 49 20 72 65 73 65 72 76 |his FAQ I reserv|
00011da0 65 20 74 68 65 20 72 69 67 68 74 20 74 6f 20 62 |e the right to b|
00011db0 65 20 77 72 6f 6e 67 2c 20 69 6e 63 6f 72 72 65 |e wrong, incorre|
00011dc0 63 74 2c 0a 20 20 20 20 20 73 6c 6f 77 2c 20 6f |ct,. slow, o|
00011dd0 75 74 20 6f 66 20 64 61 74 65 20 61 6e 64 20 67 |ut of date and g|
00011de0 65 6e 65 72 61 6c 6c 79 20 68 6f 77 20 49 20 70 |enerally how I p|
00011df0 6c 65 61 73 65 20 77 69 74 68 20 74 68 65 20 46 |lease with the F|
00011e00 41 51 20 4c 69 73 74 2e 0a |AQ List..|
00011e09 
.