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Thomas/!IBrowse/!Help/!Help
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.
| Tape/disk: | Home » Recent acquisitions » Acorn ADFS disks » adfs_AcornUser_199611.adf » Extras |
| Filename: | Thomas/!IBrowse/!Help/!Help |
| Read OK: | ✔ |
| File size: | 253D bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
____________________________________________________________________________
� / /) _ _ _ _ �
/ /_) ( (_) (_|_) _) (/_
Extremely compact Sprite and JPEG viewer for machines
equipped with SpriteExtend 0.99 or later.
______________
by David Thomas, � 1996
version 0.15 (19 Aug 1996) AU PD Scheme
____________________________________________________________________________
Introduction ______________________________________________________________
IBrowse is a Sprite and JPEG image viewer for RISC OS computers equipped
with the SpriteExtend module version 0.99 or later. This version of the
module is built into RISC OS 3.6 and is available as a soft-loadable module
for RISC OS 3.5 machines. There are details of how to get the module later
on in this file.
IBrowse was created to run in as little memory as possible, for this
reason it doesn�t provide some of the less-used features of image viewers
such as scaling the view, �slideshowing� etc. However, it does support
app-to-app transfer of images and performs excellently in its capacity as a
fast way to view images.
Usage ____________________________________________________________________
Drag a Sprite or JPEG file to the IBrowse icon bar icon. A window will
open displaying the file. Also, double-clicking on a Sprite or JPEG file
when IBrowse is loaded will load it.
In addition to the standard Info and Quit entries on the icon bar menu,
there is also a �Choices...� entry which, when selected will open the
choices window which allows you to set the types of dithering used on the
display. The options there, are :
Sprite Choices _________________________________________________________
� �Simple dithering� - uses a simple patterning technique in most modes
which helps lessen the banding effect you get when you display deep
Sprites in paletted modes. My preference is to leave this option
off, as it seems to make Sprites look worse in certain cases.
( Note that The patterning technique will not always appear
immediately on the display. Sometimes a change of screen
mode is needed to �kick� it into action. )
� �Load on double-click� - will make IBrowse respond to double-clicks
on Sprite files, which it will automatically load. This option is
off by default as most Sprite files will have more than one Sprite in
them and IBrowse will only display the first.
JPEG Dithering _________________________________________________________
� �No dithering� - performs no dithering so the image may look �banded�
in 256 and less colour modes. However, it is the quickest display
method.
� �Simple dithering� - uses a simple patterning technique in most modes
which helps lessen the banding effect.
� �Error diffusion� - is the slowest display method but provides a much
better quality of display. This method only works for 256 colour
modes, in other colour depths this is equivalent to �Simple�. It is
the default.
It is worth noting that even with Error diffusion, in paletted modes the
display quality will never be as good as that produced by ChangeFSI. Use
ChangeFSI if you're converting an image permanently to a Sprite.
A menu is available from the display window which allows you to open the
Choices window as outlined above, also it allows you to access an
information window which provides details about the image such as the
resolution and depth.
IBrowse will use a Dynamic Area for storage of the image. IBrowse is
compatible with Clare's Virtualise package.
Obtaining The Module (and fixing it) _____________________________________
If you are using RISC OS 3.5 and do not already have it, the SpriteExtend
0.99 module is available from ftp.acorn.co.uk in the pub/riscos/releases
directory under the name �spriteextend.arc�. It was also present on the
Acorn User CD-ROM 2, in the �RESOURCE� directory under the name
�SPRITEXT/SPK�.
Now, there is a bug in version 0.99 of SpriteExtend which means tiny
programs like IBrowse will not work unless they're given 24K of memory. So,
once you have the module, you should patch it with the patch file supplied
with this distribution. (You shouldn't patch the module in RISC OS 3.6 as
it won't save you any memory.) To patch the module do the following :
1) Load the Acorn Patch Utility (!Patch)
2) Double-click on the supplied patch file
3) Find the module �SpriteExt� and drag it to the Patch icon on the
icon bar.
4) Select the �Apply� option in the window
5) Open the Patch menu and select �Patch selected.�
The module will now be patched so programs that use it can work with
wimpslots of less than 24K. IBrowse will auto-detect this and use an 8K
wimpslot.
Justin Fletcher is currently working on a solution to enable RISC OS 3.1
users to use the latest SpriteExtend. You can mail him at
�Gerph@essex.ac.uk�.
Technical Notes ___________________________________________________________
This version of IBrowse _should_ run in 8K - but there appears to be an
amazingly stupid bug in SpriteExtend 0.99 which is described below. The net
result of this bug is that IBrowse has to be given a 24K wimpslot to run
without crashing. IBrowse will automatically check the version of
SpriteExtend installed and will use an 8K slot if a version later than 0.99
is available. This will of course only work if the next version has the bug
fixed.
At offset &1F90 from the start of the module is the following code :
MOV r3, #&D800
ORR r3, r3, #&20 ; = &D820
LDR r0, [r3]
MOV r0, #&90
This is a damn silly bug, as R0 is loaded from an assumed position in the
controlling task�s wimpslot and then gets overwritten by the MOV r0,#&90
instruction. This means that anything with a wimpslot of less than 22528
bytes will data abort. I�ve said it before and I�m sure I�ll say it again:
�Nice one Acorn.�
A patch file, for use with the Acorn Patch utility, is included with this
distribution of IBrowse, which allows you to fix the bug. However, if you
are a RISC OS 3.6 user then it's not really worth patching the module, as
you would have to re-load it into RAM which takes up 74K, outweighing the
saving made by fixing the module.
Credits __________________________________________________________________
Thanks to :
� Gerph (who will have no eyes left if he has to keep on using that TV :-)
� The IRC #acorn bunch (for having that cheese-fight the other day)
� Dave Lomax (who keeps trying to amalgamate me into the Dave collective)
� Craig Beech (for the insider info ;-)
� John O'Rourke (for being a �traveller� and wearing stoodent-boots)
� James Sinnott (for blowing up his PC with his static-charged fingers :-)
No thanks to :
� All the useless twazzocks who I tried to get some help off when my RPC's
power unit went kaput. Bunch o' divvies. :-(
History __________________________________________________________________
0.02 (26 Feb 1996) - Beta Test release (only given to a couple of people).
- Do not distribute.
0.05 (29 Feb 1996) - Added Scrap file handling.
- Window close functions.
0.06 (02 Mar 1996) - Fixed scrapfile handling to return error.
- RO3.5+ -friendly error routine.
0.07 (07 Mar 1996) - Fix of mouse button click on choices window.
0.08 (18 Mar 1996) - More error checking.
(06 Apr 1996) - Docs updated.
(18 Apr 1996) - Slight change to the templates.
- Fixed version of HelpFile.
0.15 (03 Jul 1996) - Added Sprite support, with optional dithering.
- SpriteExtend 0.99 is now available for RISC OS 3.5
machines, so RO 3.5 users can use IBrowse now.
- Needs an 8K slot now, rather than 4K as before.
- Error diffusion is now the default.
Copyright & Contact Addresses _____________________________________________
This program is part of the Acorn User PD Scheme. This means that three
months after publication it becomes PD and can from then on be freely
distributed. You must not distribute it within the three month period
following its publication.
This software is copyrighted work of David Thomas, it is supplied �as is�;
using it is entirely at your own risk. I make no warranty as to the fitness
of this software for any purpose. You are free, within the bound of the AU
PD Scheme, to distribute this application to anyone you please, as long as
you are not supplying it for personal gain and it is delivered with all the
supplied files unaltered.
If you have any comments, bug reports, suggestions for future versions or
anything else don't hesitate to contact me at -
Mail: Mr D.P. Thomas
20 Rosebery Avenue
Waterloo
Liverpool
L22 2BH
Email: CMSDTHOM@livjm.ac.uk
WWW: http://www.cms.livjm.ac.uk/www/homepage/cmsdthom/index.htm
IRC: #acorn as Spanners
The latest versions of my applications will be available from my World
Wide Web pages, where term dates allow.
____________________________________________________________________________
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I| 00000250 6e 74 72 6f 64 75 63 74 69 6f 6e 20 5f 5f 5f 5f |ntroduction ____| 00000260 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 00000290 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 0a 0a 20 20 49 42 |__________.. IB| 000002a0 72 6f 77 73 65 20 69 73 20 61 20 53 70 72 69 74 |rowse is a Sprit| 000002b0 65 20 61 6e 64 20 4a 50 45 47 20 69 6d 61 67 65 |e and JPEG image| 000002c0 20 76 69 65 77 65 72 20 66 6f 72 20 52 49 53 43 | viewer for RISC| 000002d0 20 4f 53 20 63 6f 6d 70 75 74 65 72 73 20 65 71 | OS computers eq| 000002e0 75 69 70 70 65 64 0a 77 69 74 68 20 74 68 65 20 |uipped.with the | 000002f0 53 70 72 69 74 65 45 78 74 65 6e 64 20 6d 6f 64 |SpriteExtend mod| 00000300 75 6c 65 20 76 65 72 73 69 6f 6e 20 30 2e 39 39 |ule version 0.99| 00000310 20 6f 72 20 6c 61 74 65 72 2e 20 20 54 68 69 73 | or later. This| 00000320 20 76 65 72 73 69 6f 6e 20 6f 66 20 74 68 65 0a | version of the.| 00000330 6d 6f 64 75 6c 65 20 69 73 20 62 75 69 6c 74 20 |module is built | 00000340 69 6e 74 6f 20 52 49 53 43 20 4f 53 20 33 2e 36 |into RISC OS 3.6| 00000350 20 61 6e 64 20 69 73 20 61 76 61 69 6c 61 62 6c | and is availabl| 00000360 65 20 61 73 20 61 20 73 6f 66 74 2d 6c 6f 61 64 |e as a soft-load| 00000370 61 62 6c 65 20 6d 6f 64 75 6c 65 0a 66 6f 72 20 |able module.for | 00000380 52 49 53 43 20 4f 53 20 33 2e 35 20 6d 61 63 68 |RISC OS 3.5 mach| 00000390 69 6e 65 73 2e 20 20 54 68 65 72 65 20 61 72 65 |ines. There are| 000003a0 20 64 65 74 61 69 6c 73 20 6f 66 20 68 6f 77 20 | details of how | 000003b0 74 6f 20 67 65 74 20 74 68 65 20 6d 6f 64 75 6c |to get the modul| 000003c0 65 20 6c 61 74 65 72 0a 6f 6e 20 69 6e 20 74 68 |e later.on in th| 000003d0 69 73 20 66 69 6c 65 2e 0a 0a 20 20 49 42 72 6f |is file... IBro| 000003e0 77 73 65 20 77 61 73 20 63 72 65 61 74 65 64 20 |wse was created | 000003f0 74 6f 20 72 75 6e 20 69 6e 20 61 73 20 6c 69 74 |to run in as lit| 00000400 74 6c 65 20 6d 65 6d 6f 72 79 20 61 73 20 70 6f |tle memory as po| 00000410 73 73 69 62 6c 65 2c 20 66 6f 72 20 74 68 69 73 |ssible, for this| 00000420 0a 72 65 61 73 6f 6e 20 69 74 20 64 6f 65 73 6e |.reason it doesn| 00000430 91 74 20 70 72 6f 76 69 64 65 20 73 6f 6d 65 20 |.t provide some | 00000440 6f 66 20 74 68 65 20 6c 65 73 73 2d 75 73 65 64 |of the less-used| 00000450 20 66 65 61 74 75 72 65 73 20 6f 66 20 69 6d 61 | features of ima| 00000460 67 65 20 76 69 65 77 65 72 73 0a 73 75 63 68 20 |ge viewers.such | 00000470 61 73 20 73 63 61 6c 69 6e 67 20 74 68 65 20 76 |as scaling the v| 00000480 69 65 77 2c 20 90 73 6c 69 64 65 73 68 6f 77 69 |iew, .slideshowi| 00000490 6e 67 91 20 65 74 63 2e 20 20 48 6f 77 65 76 65 |ng. etc. Howeve| 000004a0 72 2c 20 69 74 20 64 6f 65 73 20 73 75 70 70 6f |r, it does suppo| 000004b0 72 74 0a 61 70 70 2d 74 6f 2d 61 70 70 20 74 72 |rt.app-to-app tr| 000004c0 61 6e 73 66 65 72 20 6f 66 20 69 6d 61 67 65 73 |ansfer of images| 000004d0 20 61 6e 64 20 70 65 72 66 6f 72 6d 73 20 65 78 | and performs ex| 000004e0 63 65 6c 6c 65 6e 74 6c 79 20 69 6e 20 69 74 73 |cellently in its| 000004f0 20 63 61 70 61 63 69 74 79 20 61 73 20 61 0a 66 | capacity as a.f| 00000500 61 73 74 20 77 61 79 20 74 6f 20 76 69 65 77 20 |ast way to view | 00000510 69 6d 61 67 65 73 2e 0a 0a 0a 20 55 73 61 67 65 |images.... Usage| 00000520 20 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f | _______________| 00000530 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 00000560 5f 5f 5f 5f 5f 0a 0a 20 20 44 72 61 67 20 61 20 |_____.. Drag a | 00000570 53 70 72 69 74 65 20 6f 72 20 4a 50 45 47 20 66 |Sprite or JPEG f| 00000580 69 6c 65 20 74 6f 20 74 68 65 20 49 42 72 6f 77 |ile to the IBrow| 00000590 73 65 20 69 63 6f 6e 20 62 61 72 20 69 63 6f 6e |se icon bar icon| 000005a0 2e 20 20 41 20 77 69 6e 64 6f 77 20 77 69 6c 6c |. A window will| 000005b0 0a 6f 70 65 6e 20 64 69 73 70 6c 61 79 69 6e 67 |.open displaying| 000005c0 20 74 68 65 20 66 69 6c 65 2e 20 20 41 6c 73 6f | the file. Also| 000005d0 2c 20 64 6f 75 62 6c 65 2d 63 6c 69 63 6b 69 6e |, double-clickin| 000005e0 67 20 6f 6e 20 61 20 53 70 72 69 74 65 20 6f 72 |g on a Sprite or| 000005f0 20 4a 50 45 47 20 66 69 6c 65 0a 77 68 65 6e 20 | JPEG file.when | 00000600 49 42 72 6f 77 73 65 20 69 73 20 6c 6f 61 64 65 |IBrowse is loade| 00000610 64 20 77 69 6c 6c 20 6c 6f 61 64 20 69 74 2e 0a |d will load it..| 00000620 0a 20 20 49 6e 20 61 64 64 69 74 69 6f 6e 20 74 |. In addition t| 00000630 6f 20 74 68 65 20 73 74 61 6e 64 61 72 64 20 49 |o the standard I| 00000640 6e 66 6f 20 61 6e 64 20 51 75 69 74 20 65 6e 74 |nfo and Quit ent| 00000650 72 69 65 73 20 6f 6e 20 74 68 65 20 69 63 6f 6e |ries on the icon| 00000660 20 62 61 72 20 6d 65 6e 75 2c 0a 74 68 65 72 65 | bar menu,.there| 00000670 20 69 73 20 61 6c 73 6f 20 61 20 90 43 68 6f 69 | is also a .Choi| 00000680 63 65 73 2e 2e 2e 91 20 65 6e 74 72 79 20 77 68 |ces.... entry wh| 00000690 69 63 68 2c 20 77 68 65 6e 20 73 65 6c 65 63 74 |ich, when select| 000006a0 65 64 20 77 69 6c 6c 20 6f 70 65 6e 20 74 68 65 |ed will open the| 000006b0 0a 63 68 6f 69 63 65 73 20 77 69 6e 64 6f 77 20 |.choices window | 000006c0 77 68 69 63 68 20 61 6c 6c 6f 77 73 20 79 6f 75 |which allows you| 000006d0 20 74 6f 20 73 65 74 20 74 68 65 20 74 79 70 65 | to set the type| 000006e0 73 20 6f 66 20 64 69 74 68 65 72 69 6e 67 20 75 |s of dithering u| 000006f0 73 65 64 20 6f 6e 20 74 68 65 0a 64 69 73 70 6c |sed on the.displ| 00000700 61 79 2e 20 20 54 68 65 20 6f 70 74 69 6f 6e 73 |ay. The options| 00000710 20 74 68 65 72 65 2c 20 61 72 65 20 3a 0a 0a 20 | there, are :.. | 00000720 20 53 70 72 69 74 65 20 43 68 6f 69 63 65 73 20 | Sprite Choices | 00000730 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 00000760 5f 5f 5f 5f 5f 5f 5f 5f 5f 0a 20 20 0a 20 20 20 |_________. . | 00000770 20 8f 20 90 53 69 6d 70 6c 65 20 64 69 74 68 65 | . .Simple dithe| 00000780 72 69 6e 67 91 20 2d 20 75 73 65 73 20 61 20 73 |ring. - uses a s| 00000790 69 6d 70 6c 65 20 70 61 74 74 65 72 6e 69 6e 67 |imple patterning| 000007a0 20 74 65 63 68 6e 69 71 75 65 20 69 6e 20 6d 6f | technique in mo| 000007b0 73 74 20 6d 6f 64 65 73 0a 20 20 20 20 20 20 77 |st modes. w| 000007c0 68 69 63 68 20 68 65 6c 70 73 20 6c 65 73 73 65 |hich helps lesse| 000007d0 6e 20 74 68 65 20 62 61 6e 64 69 6e 67 20 65 66 |n the banding ef| 000007e0 66 65 63 74 20 79 6f 75 20 67 65 74 20 77 68 65 |fect you get whe| 000007f0 6e 20 79 6f 75 20 64 69 73 70 6c 61 79 20 64 65 |n you display de| 00000800 65 70 0a 20 20 20 20 20 20 53 70 72 69 74 65 73 |ep. Sprites| 00000810 20 69 6e 20 70 61 6c 65 74 74 65 64 20 6d 6f 64 | in paletted mod| 00000820 65 73 2e 20 20 4d 79 20 70 72 65 66 65 72 65 6e |es. My preferen| 00000830 63 65 20 69 73 20 74 6f 20 6c 65 61 76 65 20 74 |ce is to leave t| 00000840 68 69 73 20 6f 70 74 69 6f 6e 0a 20 20 20 20 20 |his option. | 00000850 20 6f 66 66 2c 20 61 73 20 69 74 20 73 65 65 6d | off, as it seem| 00000860 73 20 74 6f 20 6d 61 6b 65 20 53 70 72 69 74 65 |s to make Sprite| 00000870 73 20 6c 6f 6f 6b 20 77 6f 72 73 65 20 69 6e 20 |s look worse in | 00000880 63 65 72 74 61 69 6e 20 63 61 73 65 73 2e 0a 0a |certain cases...| 00000890 20 20 20 20 20 20 28 20 4e 6f 74 65 20 74 68 61 | ( Note tha| 000008a0 74 20 54 68 65 20 70 61 74 74 65 72 6e 69 6e 67 |t The patterning| 000008b0 20 74 65 63 68 6e 69 71 75 65 20 77 69 6c 6c 20 | technique will | 000008c0 6e 6f 74 20 61 6c 77 61 79 73 20 61 70 70 65 61 |not always appea| 000008d0 72 0a 20 20 20 20 20 20 20 20 69 6d 6d 65 64 69 |r. immedi| 000008e0 61 74 65 6c 79 20 6f 6e 20 74 68 65 20 64 69 73 |ately on the dis| 000008f0 70 6c 61 79 2e 20 20 53 6f 6d 65 74 69 6d 65 73 |play. Sometimes| 00000900 20 61 20 63 68 61 6e 67 65 20 6f 66 20 73 63 72 | a change of scr| 00000910 65 65 6e 0a 20 20 20 20 20 20 20 20 6d 6f 64 65 |een. mode| 00000920 20 69 73 20 6e 65 65 64 65 64 20 74 6f 20 90 6b | is needed to .k| 00000930 69 63 6b 91 20 69 74 20 69 6e 74 6f 20 61 63 74 |ick. it into act| 00000940 69 6f 6e 2e 20 29 0a 0a 20 20 20 20 8f 20 90 4c |ion. ).. . .L| 00000950 6f 61 64 20 6f 6e 20 64 6f 75 62 6c 65 2d 63 6c |oad on double-cl| 00000960 69 63 6b 91 20 2d 20 77 69 6c 6c 20 6d 61 6b 65 |ick. - will make| 00000970 20 49 42 72 6f 77 73 65 20 72 65 73 70 6f 6e 64 | IBrowse respond| 00000980 20 74 6f 20 64 6f 75 62 6c 65 2d 63 6c 69 63 6b | to double-click| 00000990 73 0a 20 20 20 20 20 20 6f 6e 20 53 70 72 69 74 |s. on Sprit| 000009a0 65 20 66 69 6c 65 73 2c 20 77 68 69 63 68 20 69 |e files, which i| 000009b0 74 20 77 69 6c 6c 20 61 75 74 6f 6d 61 74 69 63 |t will automatic| 000009c0 61 6c 6c 79 20 6c 6f 61 64 2e 20 20 54 68 69 73 |ally load. This| 000009d0 20 6f 70 74 69 6f 6e 20 69 73 0a 20 20 20 20 20 | option is. | 000009e0 20 6f 66 66 20 62 79 20 64 65 66 61 75 6c 74 20 | off by default | 000009f0 61 73 20 6d 6f 73 74 20 53 70 72 69 74 65 20 66 |as most Sprite f| 00000a00 69 6c 65 73 20 77 69 6c 6c 20 68 61 76 65 20 6d |iles will have m| 00000a10 6f 72 65 20 74 68 61 6e 20 6f 6e 65 20 53 70 72 |ore than one Spr| 00000a20 69 74 65 20 69 6e 0a 20 20 20 20 20 20 74 68 65 |ite in. the| 00000a30 6d 20 61 6e 64 20 49 42 72 6f 77 73 65 20 77 69 |m and IBrowse wi| 00000a40 6c 6c 20 6f 6e 6c 79 20 64 69 73 70 6c 61 79 20 |ll only display | 00000a50 74 68 65 20 66 69 72 73 74 2e 0a 0a 20 20 4a 50 |the first... JP| 00000a60 45 47 20 44 69 74 68 65 72 69 6e 67 20 5f 5f 5f |EG Dithering ___| 00000a70 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 00000aa0 5f 5f 5f 5f 5f 5f 0a 0a 20 20 20 20 8f 20 90 4e |______.. . .N| 00000ab0 6f 20 64 69 74 68 65 72 69 6e 67 91 20 2d 20 70 |o dithering. - p| 00000ac0 65 72 66 6f 72 6d 73 20 6e 6f 20 64 69 74 68 65 |erforms no dithe| 00000ad0 72 69 6e 67 20 73 6f 20 74 68 65 20 69 6d 61 67 |ring so the imag| 00000ae0 65 20 6d 61 79 20 6c 6f 6f 6b 20 90 62 61 6e 64 |e may look .band| 00000af0 65 64 91 0a 20 20 20 20 20 20 69 6e 20 32 35 36 |ed.. in 256| 00000b00 20 61 6e 64 20 6c 65 73 73 20 63 6f 6c 6f 75 72 | and less colour| 00000b10 20 6d 6f 64 65 73 2e 20 20 48 6f 77 65 76 65 72 | modes. However| 00000b20 2c 20 69 74 20 69 73 20 74 68 65 20 71 75 69 63 |, it is the quic| 00000b30 6b 65 73 74 20 64 69 73 70 6c 61 79 0a 20 20 20 |kest display. | 00000b40 20 20 20 6d 65 74 68 6f 64 2e 0a 0a 20 20 20 20 | method... | 00000b50 8f 20 90 53 69 6d 70 6c 65 20 64 69 74 68 65 72 |. .Simple dither| 00000b60 69 6e 67 91 20 2d 20 75 73 65 73 20 61 20 73 69 |ing. - uses a si| 00000b70 6d 70 6c 65 20 70 61 74 74 65 72 6e 69 6e 67 20 |mple patterning | 00000b80 74 65 63 68 6e 69 71 75 65 20 69 6e 20 6d 6f 73 |technique in mos| 00000b90 74 20 6d 6f 64 65 73 0a 20 20 20 20 20 20 77 68 |t modes. wh| 00000ba0 69 63 68 20 68 65 6c 70 73 20 6c 65 73 73 65 6e |ich helps lessen| 00000bb0 20 74 68 65 20 62 61 6e 64 69 6e 67 20 65 66 66 | the banding eff| 00000bc0 65 63 74 2e 0a 0a 20 20 20 20 8f 20 90 45 72 72 |ect... . .Err| 00000bd0 6f 72 20 64 69 66 66 75 73 69 6f 6e 91 20 2d 20 |or diffusion. - | 00000be0 69 73 20 74 68 65 20 73 6c 6f 77 65 73 74 20 64 |is the slowest d| 00000bf0 69 73 70 6c 61 79 20 6d 65 74 68 6f 64 20 62 75 |isplay method bu| 00000c00 74 20 70 72 6f 76 69 64 65 73 20 61 20 6d 75 63 |t provides a muc| 00000c10 68 0a 20 20 20 20 20 20 62 65 74 74 65 72 20 71 |h. better q| 00000c20 75 61 6c 69 74 79 20 6f 66 20 64 69 73 70 6c 61 |uality of displa| 00000c30 79 2e 20 20 54 68 69 73 20 6d 65 74 68 6f 64 20 |y. This method | 00000c40 6f 6e 6c 79 20 77 6f 72 6b 73 20 66 6f 72 20 32 |only works for 2| 00000c50 35 36 20 63 6f 6c 6f 75 72 0a 20 20 20 20 20 20 |56 colour. | 00000c60 6d 6f 64 65 73 2c 20 69 6e 20 6f 74 68 65 72 20 |modes, in other | 00000c70 63 6f 6c 6f 75 72 20 64 65 70 74 68 73 20 74 68 |colour depths th| 00000c80 69 73 20 69 73 20 65 71 75 69 76 61 6c 65 6e 74 |is is equivalent| 00000c90 20 74 6f 20 90 53 69 6d 70 6c 65 91 2e 20 20 49 | to .Simple.. I| 00000ca0 74 20 69 73 0a 20 20 20 20 20 20 74 68 65 20 64 |t is. the d| 00000cb0 65 66 61 75 6c 74 2e 0a 0a 49 74 20 69 73 20 77 |efault...It is w| 00000cc0 6f 72 74 68 20 6e 6f 74 69 6e 67 20 74 68 61 74 |orth noting that| 00000cd0 20 65 76 65 6e 20 77 69 74 68 20 45 72 72 6f 72 | even with Error| 00000ce0 20 64 69 66 66 75 73 69 6f 6e 2c 20 69 6e 20 70 | diffusion, in p| 00000cf0 61 6c 65 74 74 65 64 20 6d 6f 64 65 73 20 74 68 |aletted modes th| 00000d00 65 0a 64 69 73 70 6c 61 79 20 71 75 61 6c 69 74 |e.display qualit| 00000d10 79 20 77 69 6c 6c 20 6e 65 76 65 72 20 62 65 20 |y will never be | 00000d20 61 73 20 67 6f 6f 64 20 61 73 20 74 68 61 74 20 |as good as that | 00000d30 70 72 6f 64 75 63 65 64 20 62 79 20 43 68 61 6e |produced by Chan| 00000d40 67 65 46 53 49 2e 20 20 55 73 65 0a 43 68 61 6e |geFSI. Use.Chan| 00000d50 67 65 46 53 49 20 69 66 20 79 6f 75 27 72 65 20 |geFSI if you're | 00000d60 63 6f 6e 76 65 72 74 69 6e 67 20 61 6e 20 69 6d |converting an im| 00000d70 61 67 65 20 70 65 72 6d 61 6e 65 6e 74 6c 79 20 |age permanently | 00000d80 74 6f 20 61 20 53 70 72 69 74 65 2e 0a 0a 20 20 |to a Sprite... | 00000d90 41 20 6d 65 6e 75 20 69 73 20 61 76 61 69 6c 61 |A menu is availa| 00000da0 62 6c 65 20 66 72 6f 6d 20 74 68 65 20 64 69 73 |ble from the dis| 00000db0 70 6c 61 79 20 77 69 6e 64 6f 77 20 77 68 69 63 |play window whic| 00000dc0 68 20 61 6c 6c 6f 77 73 20 79 6f 75 20 74 6f 20 |h allows you to | 00000dd0 6f 70 65 6e 20 74 68 65 0a 43 68 6f 69 63 65 73 |open the.Choices| 00000de0 20 77 69 6e 64 6f 77 20 61 73 20 6f 75 74 6c 69 | window as outli| 00000df0 6e 65 64 20 61 62 6f 76 65 2c 20 61 6c 73 6f 20 |ned above, also | 00000e00 69 74 20 61 6c 6c 6f 77 73 20 79 6f 75 20 74 6f |it allows you to| 00000e10 20 61 63 63 65 73 73 20 61 6e 0a 69 6e 66 6f 72 | access an.infor| 00000e20 6d 61 74 69 6f 6e 20 77 69 6e 64 6f 77 20 77 68 |mation window wh| 00000e30 69 63 68 20 70 72 6f 76 69 64 65 73 20 64 65 74 |ich provides det| 00000e40 61 69 6c 73 20 61 62 6f 75 74 20 74 68 65 20 69 |ails about the i| 00000e50 6d 61 67 65 20 73 75 63 68 20 61 73 20 74 68 65 |mage such as the| 00000e60 0a 72 65 73 6f 6c 75 74 69 6f 6e 20 61 6e 64 20 |.resolution and | 00000e70 64 65 70 74 68 2e 0a 0a 0a 20 20 49 42 72 6f 77 |depth.... IBrow| 00000e80 73 65 20 77 69 6c 6c 20 75 73 65 20 61 20 44 79 |se will use a Dy| 00000e90 6e 61 6d 69 63 20 41 72 65 61 20 66 6f 72 20 73 |namic Area for s| 00000ea0 74 6f 72 61 67 65 20 6f 66 20 74 68 65 20 69 6d |torage of the im| 00000eb0 61 67 65 2e 20 20 49 42 72 6f 77 73 65 20 69 73 |age. IBrowse is| 00000ec0 0a 63 6f 6d 70 61 74 69 62 6c 65 20 77 69 74 68 |.compatible with| 00000ed0 20 43 6c 61 72 65 27 73 20 56 69 72 74 75 61 6c | Clare's Virtual| 00000ee0 69 73 65 20 70 61 63 6b 61 67 65 2e 0a 0a 0a 20 |ise package.... | 00000ef0 4f 62 74 61 69 6e 69 6e 67 20 54 68 65 20 4d 6f |Obtaining The Mo| 00000f00 64 75 6c 65 20 28 61 6e 64 20 66 69 78 69 6e 67 |dule (and fixing| 00000f10 20 69 74 29 20 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f | it) ___________| 00000f20 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| 00000f30 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 0a 0a 20 20 49 66 |__________.. If| 00000f40 20 79 6f 75 20 61 72 65 20 75 73 69 6e 67 20 52 | you are using R| 00000f50 49 53 43 20 4f 53 20 33 2e 35 20 61 6e 64 20 64 |ISC OS 3.5 and d| 00000f60 6f 20 6e 6f 74 20 61 6c 72 65 61 64 79 20 68 61 |o not already ha| 00000f70 76 65 20 69 74 2c 20 74 68 65 20 53 70 72 69 74 |ve it, the Sprit| 00000f80 65 45 78 74 65 6e 64 0a 30 2e 39 39 20 6d 6f 64 |eExtend.0.99 mod| 00000f90 75 6c 65 20 69 73 20 61 76 61 69 6c 61 62 6c 65 |ule is available| 00000fa0 20 66 72 6f 6d 20 66 74 70 2e 61 63 6f 72 6e 2e | from ftp.acorn.| 00000fb0 63 6f 2e 75 6b 20 69 6e 20 74 68 65 20 70 75 62 |co.uk in the pub| 00000fc0 2f 72 69 73 63 6f 73 2f 72 65 6c 65 61 73 65 73 |/riscos/releases| 00000fd0 0a 64 69 72 65 63 74 6f 72 79 20 75 6e 64 65 72 |.directory under| 00000fe0 20 74 68 65 20 6e 61 6d 65 20 90 73 70 72 69 74 | the name .sprit| 00000ff0 65 65 78 74 65 6e 64 2e 61 72 63 91 2e 20 20 49 |eextend.arc.. I| 00001000 74 20 77 61 73 20 61 6c 73 6f 20 70 72 65 73 65 |t was also prese| 00001010 6e 74 20 6f 6e 20 74 68 65 0a 41 63 6f 72 6e 20 |nt on the.Acorn | 00001020 55 73 65 72 20 43 44 2d 52 4f 4d 20 32 2c 20 69 |User CD-ROM 2, i| 00001030 6e 20 74 68 65 20 90 52 45 53 4f 55 52 43 45 91 |n the .RESOURCE.| 00001040 20 64 69 72 65 63 74 6f 72 79 20 75 6e 64 65 72 | directory under| 00001050 20 74 68 65 20 6e 61 6d 65 0a 90 53 50 52 49 54 | the name..SPRIT| 00001060 45 58 54 2f 53 50 4b 91 2e 0a 0a 20 20 4e 6f 77 |EXT/SPK.... Now| 00001070 2c 20 74 68 65 72 65 20 69 73 20 61 20 62 75 67 |, there is a bug| 00001080 20 69 6e 20 76 65 72 73 69 6f 6e 20 30 2e 39 39 | in version 0.99| 00001090 20 6f 66 20 53 70 72 69 74 65 45 78 74 65 6e 64 | of SpriteExtend| 000010a0 20 77 68 69 63 68 20 6d 65 61 6e 73 20 74 69 6e | which means tin| 000010b0 79 0a 70 72 6f 67 72 61 6d 73 20 6c 69 6b 65 20 |y.programs like | 000010c0 49 42 72 6f 77 73 65 20 77 69 6c 6c 20 6e 6f 74 |IBrowse will not| 000010d0 20 77 6f 72 6b 20 75 6e 6c 65 73 73 20 74 68 65 | work unless the| 000010e0 79 27 72 65 20 67 69 76 65 6e 20 32 34 4b 20 6f |y're given 24K o| 000010f0 66 20 6d 65 6d 6f 72 79 2e 20 20 53 6f 2c 0a 6f |f memory. So,.o| 00001100 6e 63 65 20 79 6f 75 20 68 61 76 65 20 74 68 65 |nce you have the| 00001110 20 6d 6f 64 75 6c 65 2c 20 79 6f 75 20 73 68 6f | module, you sho| 00001120 75 6c 64 20 70 61 74 63 68 20 69 74 20 77 69 74 |uld patch it wit| 00001130 68 20 74 68 65 20 70 61 74 63 68 20 66 69 6c 65 |h the patch file| 00001140 20 73 75 70 70 6c 69 65 64 0a 77 69 74 68 20 74 | supplied.with t| 00001150 68 69 73 20 64 69 73 74 72 69 62 75 74 69 6f 6e |his distribution| 00001160 2e 20 20 28 59 6f 75 20 73 68 6f 75 6c 64 6e 27 |. (You shouldn'| 00001170 74 20 70 61 74 63 68 20 74 68 65 20 6d 6f 64 75 |t patch the modu| 00001180 6c 65 20 69 6e 20 52 49 53 43 20 4f 53 20 33 2e |le in RISC OS 3.| 00001190 36 20 61 73 0a 69 74 20 77 6f 6e 27 74 20 73 61 |6 as.it won't sa| 000011a0 76 65 20 79 6f 75 20 61 6e 79 20 6d 65 6d 6f 72 |ve you any memor| 000011b0 79 2e 29 20 20 54 6f 20 70 61 74 63 68 20 74 68 |y.) To patch th| 000011c0 65 20 6d 6f 64 75 6c 65 20 64 6f 20 74 68 65 20 |e module do the | 000011d0 66 6f 6c 6c 6f 77 69 6e 67 20 3a 0a 0a 20 31 29 |following :.. 1)| 000011e0 20 4c 6f 61 64 20 74 68 65 20 41 63 6f 72 6e 20 | Load the Acorn | 000011f0 50 61 74 63 68 20 55 74 69 6c 69 74 79 20 28 21 |Patch Utility (!| 00001200 50 61 74 63 68 29 0a 20 32 29 20 44 6f 75 62 6c |Patch). 2) Doubl| 00001210 65 2d 63 6c 69 63 6b 20 6f 6e 20 74 68 65 20 73 |e-click on the s| 00001220 75 70 70 6c 69 65 64 20 70 61 74 63 68 20 66 69 |upplied patch fi| 00001230 6c 65 0a 20 33 29 20 46 69 6e 64 20 74 68 65 20 |le. 3) Find the | 00001240 6d 6f 64 75 6c 65 20 90 53 70 72 69 74 65 45 78 |module .SpriteEx| 00001250 74 91 20 61 6e 64 20 64 72 61 67 20 69 74 20 74 |t. and drag it t| 00001260 6f 20 74 68 65 20 50 61 74 63 68 20 69 63 6f 6e |o the Patch icon| 00001270 20 6f 6e 20 74 68 65 0a 20 20 20 20 69 63 6f 6e | on the. icon| 00001280 20 62 61 72 2e 0a 20 34 29 20 53 65 6c 65 63 74 | bar.. 4) Select| 00001290 20 74 68 65 20 90 41 70 70 6c 79 91 20 6f 70 74 | the .Apply. opt| 000012a0 69 6f 6e 20 69 6e 20 74 68 65 20 77 69 6e 64 6f |ion in the windo| 000012b0 77 0a 20 35 29 20 4f 70 65 6e 20 74 68 65 20 50 |w. 5) Open the P| 000012c0 61 74 63 68 20 6d 65 6e 75 20 61 6e 64 20 73 65 |atch menu and se| 000012d0 6c 65 63 74 20 90 50 61 74 63 68 20 73 65 6c 65 |lect .Patch sele| 000012e0 63 74 65 64 2e 91 0a 0a 54 68 65 20 6d 6f 64 75 |cted....The modu| 000012f0 6c 65 20 77 69 6c 6c 20 6e 6f 77 20 62 65 20 70 |le will now be p| 00001300 61 74 63 68 65 64 20 73 6f 20 70 72 6f 67 72 61 |atched so progra| 00001310 6d 73 20 74 68 61 74 20 75 73 65 20 69 74 20 63 |ms that use it c| 00001320 61 6e 20 77 6f 72 6b 20 77 69 74 68 0a 77 69 6d |an work with.wim| 00001330 70 73 6c 6f 74 73 20 6f 66 20 6c 65 73 73 20 74 |pslots of less t| 00001340 68 61 6e 20 32 34 4b 2e 20 20 49 42 72 6f 77 73 |han 24K. IBrows| 00001350 65 20 77 69 6c 6c 20 61 75 74 6f 2d 64 65 74 65 |e will auto-dete| 00001360 63 74 20 74 68 69 73 20 61 6e 64 20 75 73 65 20 |ct this and use | 00001370 61 6e 20 38 4b 0a 77 69 6d 70 73 6c 6f 74 2e 0a |an 8K.wimpslot..| 00001380 0a 20 20 0a 20 20 4a 75 73 74 69 6e 20 46 6c 65 |. . Justin Fle| 00001390 74 63 68 65 72 20 69 73 20 63 75 72 72 65 6e 74 |tcher is current| 000013a0 6c 79 20 77 6f 72 6b 69 6e 67 20 6f 6e 20 61 20 |ly working on a | 000013b0 73 6f 6c 75 74 69 6f 6e 20 74 6f 20 65 6e 61 62 |solution to enab| 000013c0 6c 65 20 52 49 53 43 20 4f 53 20 33 2e 31 0a 75 |le RISC OS 3.1.u| 000013d0 73 65 72 73 20 74 6f 20 75 73 65 20 74 68 65 20 |sers to use the | 000013e0 6c 61 74 65 73 74 20 53 70 72 69 74 65 45 78 74 |latest SpriteExt| 000013f0 65 6e 64 2e 20 20 59 6f 75 20 63 61 6e 20 6d 61 |end. You can ma| 00001400 69 6c 20 68 69 6d 20 61 74 0a 90 47 65 72 70 68 |il him at..Gerph| 00001410 40 65 73 73 65 78 2e 61 63 2e 75 6b 91 2e 0a 0a |@essex.ac.uk....| 00001420 0a 20 54 65 63 68 6e 69 63 61 6c 20 4e 6f 74 65 |. Technical Note| 00001430 73 20 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |s ______________| 00001440 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 00001460 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 0a 0a 20 |_____________.. | 00001470 20 54 68 69 73 20 76 65 72 73 69 6f 6e 20 6f 66 | This version of| 00001480 20 49 42 72 6f 77 73 65 20 5f 73 68 6f 75 6c 64 | IBrowse _should| 00001490 5f 20 72 75 6e 20 69 6e 20 38 4b 20 2d 20 62 75 |_ run in 8K - bu| 000014a0 74 20 74 68 65 72 65 20 61 70 70 65 61 72 73 20 |t there appears | 000014b0 74 6f 20 62 65 20 61 6e 0a 61 6d 61 7a 69 6e 67 |to be an.amazing| 000014c0 6c 79 20 73 74 75 70 69 64 20 62 75 67 20 69 6e |ly stupid bug in| 000014d0 20 53 70 72 69 74 65 45 78 74 65 6e 64 20 30 2e | SpriteExtend 0.| 000014e0 39 39 20 77 68 69 63 68 20 69 73 20 64 65 73 63 |99 which is desc| 000014f0 72 69 62 65 64 20 62 65 6c 6f 77 2e 20 20 54 68 |ribed below. Th| 00001500 65 20 6e 65 74 0a 72 65 73 75 6c 74 20 6f 66 20 |e net.result of | 00001510 74 68 69 73 20 62 75 67 20 69 73 20 74 68 61 74 |this bug is that| 00001520 20 49 42 72 6f 77 73 65 20 68 61 73 20 74 6f 20 | IBrowse has to | 00001530 62 65 20 67 69 76 65 6e 20 61 20 32 34 4b 20 77 |be given a 24K w| 00001540 69 6d 70 73 6c 6f 74 20 74 6f 20 72 75 6e 0a 77 |impslot to run.w| 00001550 69 74 68 6f 75 74 20 63 72 61 73 68 69 6e 67 2e |ithout crashing.| 00001560 20 20 49 42 72 6f 77 73 65 20 77 69 6c 6c 20 61 | IBrowse will a| 00001570 75 74 6f 6d 61 74 69 63 61 6c 6c 79 20 63 68 65 |utomatically che| 00001580 63 6b 20 74 68 65 20 76 65 72 73 69 6f 6e 20 6f |ck the version o| 00001590 66 0a 53 70 72 69 74 65 45 78 74 65 6e 64 20 69 |f.SpriteExtend i| 000015a0 6e 73 74 61 6c 6c 65 64 20 61 6e 64 20 77 69 6c |nstalled and wil| 000015b0 6c 20 75 73 65 20 61 6e 20 38 4b 20 73 6c 6f 74 |l use an 8K slot| 000015c0 20 69 66 20 61 20 76 65 72 73 69 6f 6e 20 6c 61 | if a version la| 000015d0 74 65 72 20 74 68 61 6e 20 30 2e 39 39 0a 69 73 |ter than 0.99.is| 000015e0 20 61 76 61 69 6c 61 62 6c 65 2e 20 20 54 68 69 | available. Thi| 000015f0 73 20 77 69 6c 6c 20 6f 66 20 63 6f 75 72 73 65 |s will of course| 00001600 20 6f 6e 6c 79 20 77 6f 72 6b 20 69 66 20 74 68 | only work if th| 00001610 65 20 6e 65 78 74 20 76 65 72 73 69 6f 6e 20 68 |e next version h| 00001620 61 73 20 74 68 65 20 62 75 67 0a 66 69 78 65 64 |as the bug.fixed| 00001630 2e 0a 0a 20 20 41 74 20 6f 66 66 73 65 74 20 26 |... At offset &| 00001640 31 46 39 30 20 66 72 6f 6d 20 74 68 65 20 73 74 |1F90 from the st| 00001650 61 72 74 20 6f 66 20 74 68 65 20 6d 6f 64 75 6c |art of the modul| 00001660 65 20 69 73 20 74 68 65 20 66 6f 6c 6c 6f 77 69 |e is the followi| 00001670 6e 67 20 63 6f 64 65 20 3a 0a 0a 20 20 20 20 20 |ng code :.. | 00001680 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001690 20 4d 4f 56 20 20 20 20 20 72 33 2c 20 23 26 44 | MOV r3, #&D| 000016a0 38 30 30 0a 20 20 20 20 20 20 20 20 20 20 20 20 |800. | 000016b0 20 20 20 20 20 20 20 20 20 20 4f 52 52 20 20 20 | ORR | 000016c0 20 20 72 33 2c 20 72 33 2c 20 23 26 32 30 20 20 | r3, r3, #&20 | 000016d0 20 20 3b 20 3d 20 26 44 38 32 30 0a 20 20 20 20 | ; = &D820. | 000016e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000016f0 20 20 4c 44 52 20 20 20 20 20 72 30 2c 20 5b 72 | LDR r0, [r| 00001700 33 5d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 |3]. | 00001710 20 20 20 20 20 20 20 20 20 4d 4f 56 20 20 20 20 | MOV | 00001720 20 72 30 2c 20 23 26 39 30 0a 0a 54 68 69 73 20 | r0, #&90..This | 00001730 69 73 20 61 20 64 61 6d 6e 20 73 69 6c 6c 79 20 |is a damn silly | 00001740 62 75 67 2c 20 61 73 20 52 30 20 69 73 20 6c 6f |bug, as R0 is lo| 00001750 61 64 65 64 20 66 72 6f 6d 20 61 6e 20 61 73 73 |aded from an ass| 00001760 75 6d 65 64 20 70 6f 73 69 74 69 6f 6e 20 69 6e |umed position in| 00001770 20 74 68 65 0a 63 6f 6e 74 72 6f 6c 6c 69 6e 67 | the.controlling| 00001780 20 74 61 73 6b 91 73 20 77 69 6d 70 73 6c 6f 74 | task.s wimpslot| 00001790 20 61 6e 64 20 74 68 65 6e 20 67 65 74 73 20 6f | and then gets o| 000017a0 76 65 72 77 72 69 74 74 65 6e 20 62 79 20 74 68 |verwritten by th| 000017b0 65 20 4d 4f 56 20 72 30 2c 23 26 39 30 0a 69 6e |e MOV r0,#&90.in| 000017c0 73 74 72 75 63 74 69 6f 6e 2e 20 20 54 68 69 73 |struction. This| 000017d0 20 6d 65 61 6e 73 20 74 68 61 74 20 61 6e 79 74 | means that anyt| 000017e0 68 69 6e 67 20 77 69 74 68 20 61 20 77 69 6d 70 |hing with a wimp| 000017f0 73 6c 6f 74 20 6f 66 20 6c 65 73 73 20 74 68 61 |slot of less tha| 00001800 6e 20 32 32 35 32 38 0a 62 79 74 65 73 20 77 69 |n 22528.bytes wi| 00001810 6c 6c 20 64 61 74 61 20 61 62 6f 72 74 2e 20 20 |ll data abort. | 00001820 49 91 76 65 20 73 61 69 64 20 69 74 20 62 65 66 |I.ve said it bef| 00001830 6f 72 65 20 61 6e 64 20 49 91 6d 20 73 75 72 65 |ore and I.m sure| 00001840 20 49 91 6c 6c 20 73 61 79 20 69 74 20 61 67 61 | I.ll say it aga| 00001850 69 6e 3a 0a 94 4e 69 63 65 20 6f 6e 65 20 41 63 |in:..Nice one Ac| 00001860 6f 72 6e 2e 95 0a 0a 20 20 41 20 70 61 74 63 68 |orn.... A patch| 00001870 20 66 69 6c 65 2c 20 66 6f 72 20 75 73 65 20 77 | file, for use w| 00001880 69 74 68 20 74 68 65 20 41 63 6f 72 6e 20 50 61 |ith the Acorn Pa| 00001890 74 63 68 20 75 74 69 6c 69 74 79 2c 20 69 73 20 |tch utility, is | 000018a0 69 6e 63 6c 75 64 65 64 20 77 69 74 68 20 74 68 |included with th| 000018b0 69 73 0a 64 69 73 74 72 69 62 75 74 69 6f 6e 20 |is.distribution | 000018c0 6f 66 20 49 42 72 6f 77 73 65 2c 20 77 68 69 63 |of IBrowse, whic| 000018d0 68 20 61 6c 6c 6f 77 73 20 79 6f 75 20 74 6f 20 |h allows you to | 000018e0 66 69 78 20 74 68 65 20 62 75 67 2e 20 20 48 6f |fix the bug. Ho| 000018f0 77 65 76 65 72 2c 20 69 66 20 79 6f 75 0a 61 72 |wever, if you.ar| 00001900 65 20 61 20 52 49 53 43 20 4f 53 20 33 2e 36 20 |e a RISC OS 3.6 | 00001910 75 73 65 72 20 74 68 65 6e 20 69 74 27 73 20 6e |user then it's n| 00001920 6f 74 20 72 65 61 6c 6c 79 20 77 6f 72 74 68 20 |ot really worth | 00001930 70 61 74 63 68 69 6e 67 20 74 68 65 20 6d 6f 64 |patching the mod| 00001940 75 6c 65 2c 20 61 73 0a 79 6f 75 20 77 6f 75 6c |ule, as.you woul| 00001950 64 20 68 61 76 65 20 74 6f 20 72 65 2d 6c 6f 61 |d have to re-loa| 00001960 64 20 69 74 20 69 6e 74 6f 20 52 41 4d 20 77 68 |d it into RAM wh| 00001970 69 63 68 20 74 61 6b 65 73 20 75 70 20 37 34 4b |ich takes up 74K| 00001980 2c 20 6f 75 74 77 65 69 67 68 69 6e 67 20 74 68 |, outweighing th| 00001990 65 0a 73 61 76 69 6e 67 20 6d 61 64 65 20 62 79 |e.saving made by| 000019a0 20 66 69 78 69 6e 67 20 74 68 65 20 6d 6f 64 75 | fixing the modu| 000019b0 6c 65 2e 0a 0a 0a 20 43 72 65 64 69 74 73 20 5f |le.... Credits _| 000019c0 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 00001a00 5f 0a 0a 20 20 54 68 61 6e 6b 73 20 74 6f 20 3a |_.. Thanks to :| 00001a10 0a 0a 20 20 8f 20 47 65 72 70 68 20 28 77 68 6f |.. . Gerph (who| 00001a20 20 77 69 6c 6c 20 68 61 76 65 20 6e 6f 20 65 79 | will have no ey| 00001a30 65 73 20 6c 65 66 74 20 69 66 20 68 65 20 68 61 |es left if he ha| 00001a40 73 20 74 6f 20 6b 65 65 70 20 6f 6e 20 75 73 69 |s to keep on usi| 00001a50 6e 67 20 74 68 61 74 20 54 56 20 3a 2d 29 0a 20 |ng that TV :-). | 00001a60 20 8f 20 54 68 65 20 49 52 43 20 23 61 63 6f 72 | . The IRC #acor| 00001a70 6e 20 62 75 6e 63 68 20 28 66 6f 72 20 68 61 76 |n bunch (for hav| 00001a80 69 6e 67 20 74 68 61 74 20 63 68 65 65 73 65 2d |ing that cheese-| 00001a90 66 69 67 68 74 20 74 68 65 20 6f 74 68 65 72 20 |fight the other | 00001aa0 64 61 79 29 0a 20 20 8f 20 44 61 76 65 20 4c 6f |day). . Dave Lo| 00001ab0 6d 61 78 20 28 77 68 6f 20 6b 65 65 70 73 20 74 |max (who keeps t| 00001ac0 72 79 69 6e 67 20 74 6f 20 61 6d 61 6c 67 61 6d |rying to amalgam| 00001ad0 61 74 65 20 6d 65 20 69 6e 74 6f 20 74 68 65 20 |ate me into the | 00001ae0 44 61 76 65 20 63 6f 6c 6c 65 63 74 69 76 65 29 |Dave collective)| 00001af0 0a 20 20 8f 20 43 72 61 69 67 20 42 65 65 63 68 |. . Craig Beech| 00001b00 20 28 66 6f 72 20 74 68 65 20 69 6e 73 69 64 65 | (for the inside| 00001b10 72 20 69 6e 66 6f 20 3b 2d 29 0a 20 20 8f 20 4a |r info ;-). . J| 00001b20 6f 68 6e 20 4f 27 52 6f 75 72 6b 65 20 28 66 6f |ohn O'Rourke (fo| 00001b30 72 20 62 65 69 6e 67 20 61 20 94 74 72 61 76 65 |r being a .trave| 00001b40 6c 6c 65 72 95 20 61 6e 64 20 77 65 61 72 69 6e |ller. and wearin| 00001b50 67 20 73 74 6f 6f 64 65 6e 74 2d 62 6f 6f 74 73 |g stoodent-boots| 00001b60 29 0a 20 20 8f 20 4a 61 6d 65 73 20 53 69 6e 6e |). . James Sinn| 00001b70 6f 74 74 20 28 66 6f 72 20 62 6c 6f 77 69 6e 67 |ott (for blowing| 00001b80 20 75 70 20 68 69 73 20 50 43 20 77 69 74 68 20 | up his PC with | 00001b90 68 69 73 20 73 74 61 74 69 63 2d 63 68 61 72 67 |his static-charg| 00001ba0 65 64 20 66 69 6e 67 65 72 73 20 3a 2d 29 0a 0a |ed fingers :-)..| 00001bb0 20 20 4e 6f 20 74 68 61 6e 6b 73 20 74 6f 20 3a | No thanks to :| 00001bc0 0a 20 20 0a 20 20 8f 20 41 6c 6c 20 74 68 65 20 |. . . All the | 00001bd0 75 73 65 6c 65 73 73 20 74 77 61 7a 7a 6f 63 6b |useless twazzock| 00001be0 73 20 77 68 6f 20 49 20 74 72 69 65 64 20 74 6f |s who I tried to| 00001bf0 20 67 65 74 20 73 6f 6d 65 20 68 65 6c 70 20 6f | get some help o| 00001c00 66 66 20 77 68 65 6e 20 6d 79 20 52 50 43 27 73 |ff when my RPC's| 00001c10 0a 20 20 20 20 70 6f 77 65 72 20 75 6e 69 74 20 |. power unit | 00001c20 77 65 6e 74 20 6b 61 70 75 74 2e 20 20 42 75 6e |went kaput. Bun| 00001c30 63 68 20 6f 27 20 64 69 76 76 69 65 73 2e 20 3a |ch o' divvies. :| 00001c40 2d 28 0a 0a 0a 20 48 69 73 74 6f 72 79 20 5f 5f |-(... History __| 00001c50 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 00001c90 0a 0a 20 20 30 2e 30 32 20 28 32 36 20 46 65 62 |.. 0.02 (26 Feb| 00001ca0 20 31 39 39 36 29 20 2d 20 42 65 74 61 20 54 65 | 1996) - Beta Te| 00001cb0 73 74 20 72 65 6c 65 61 73 65 20 28 6f 6e 6c 79 |st release (only| 00001cc0 20 67 69 76 65 6e 20 74 6f 20 61 20 63 6f 75 70 | given to a coup| 00001cd0 6c 65 20 6f 66 20 70 65 6f 70 6c 65 29 2e 0a 20 |le of people).. | 00001ce0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001cf0 20 20 20 20 2d 20 44 6f 20 6e 6f 74 20 64 69 73 | - Do not dis| 00001d00 74 72 69 62 75 74 65 2e 0a 20 20 30 2e 30 35 20 |tribute.. 0.05 | 00001d10 28 32 39 20 46 65 62 20 31 39 39 36 29 20 2d 20 |(29 Feb 1996) - | 00001d20 41 64 64 65 64 20 53 63 72 61 70 20 66 69 6c 65 |Added Scrap file| 00001d30 20 68 61 6e 64 6c 69 6e 67 2e 0a 20 20 20 20 20 | handling.. | 00001d40 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001d50 2d 20 57 69 6e 64 6f 77 20 63 6c 6f 73 65 20 66 |- Window close f| 00001d60 75 6e 63 74 69 6f 6e 73 2e 0a 20 20 30 2e 30 36 |unctions.. 0.06| 00001d70 20 28 30 32 20 4d 61 72 20 31 39 39 36 29 20 2d | (02 Mar 1996) -| 00001d80 20 46 69 78 65 64 20 73 63 72 61 70 66 69 6c 65 | Fixed scrapfile| 00001d90 20 68 61 6e 64 6c 69 6e 67 20 74 6f 20 72 65 74 | handling to ret| 00001da0 75 72 6e 20 65 72 72 6f 72 2e 0a 20 20 20 20 20 |urn error.. | 00001db0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001dc0 2d 20 52 4f 33 2e 35 2b 20 2d 66 72 69 65 6e 64 |- RO3.5+ -friend| 00001dd0 6c 79 20 65 72 72 6f 72 20 72 6f 75 74 69 6e 65 |ly error routine| 00001de0 2e 0a 20 20 30 2e 30 37 20 28 30 37 20 4d 61 72 |.. 0.07 (07 Mar| 00001df0 20 31 39 39 36 29 20 2d 20 46 69 78 20 6f 66 20 | 1996) - Fix of | 00001e00 6d 6f 75 73 65 20 62 75 74 74 6f 6e 20 63 6c 69 |mouse button cli| 00001e10 63 6b 20 6f 6e 20 63 68 6f 69 63 65 73 20 77 69 |ck on choices wi| 00001e20 6e 64 6f 77 2e 0a 20 20 30 2e 30 38 20 28 31 38 |ndow.. 0.08 (18| 00001e30 20 4d 61 72 20 31 39 39 36 29 20 2d 20 4d 6f 72 | Mar 1996) - Mor| 00001e40 65 20 65 72 72 6f 72 20 63 68 65 63 6b 69 6e 67 |e error checking| 00001e50 2e 0a 20 20 20 20 20 20 20 28 30 36 20 41 70 72 |.. (06 Apr| 00001e60 20 31 39 39 36 29 20 2d 20 44 6f 63 73 20 75 70 | 1996) - Docs up| 00001e70 64 61 74 65 64 2e 0a 20 20 20 20 20 20 20 28 31 |dated.. (1| 00001e80 38 20 41 70 72 20 31 39 39 36 29 20 2d 20 53 6c |8 Apr 1996) - Sl| 00001e90 69 67 68 74 20 63 68 61 6e 67 65 20 74 6f 20 74 |ight change to t| 00001ea0 68 65 20 74 65 6d 70 6c 61 74 65 73 2e 0a 20 20 |he templates.. | 00001eb0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001ec0 20 20 20 2d 20 46 69 78 65 64 20 76 65 72 73 69 | - Fixed versi| 00001ed0 6f 6e 20 6f 66 20 48 65 6c 70 46 69 6c 65 2e 0a |on of HelpFile..| 00001ee0 20 20 30 2e 31 35 20 28 30 33 20 4a 75 6c 20 31 | 0.15 (03 Jul 1| 00001ef0 39 39 36 29 20 2d 20 41 64 64 65 64 20 53 70 72 |996) - Added Spr| 00001f00 69 74 65 20 73 75 70 70 6f 72 74 2c 20 77 69 74 |ite support, wit| 00001f10 68 20 6f 70 74 69 6f 6e 61 6c 20 64 69 74 68 65 |h optional dithe| 00001f20 72 69 6e 67 2e 0a 20 20 20 20 20 20 20 20 20 20 |ring.. | 00001f30 20 20 20 20 20 20 20 20 20 20 20 2d 20 53 70 72 | - Spr| 00001f40 69 74 65 45 78 74 65 6e 64 20 30 2e 39 39 20 69 |iteExtend 0.99 i| 00001f50 73 20 6e 6f 77 20 61 76 61 69 6c 61 62 6c 65 20 |s now available | 00001f60 66 6f 72 20 52 49 53 43 20 4f 53 20 33 2e 35 0a |for RISC OS 3.5.| 00001f70 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001f80 20 20 20 20 20 20 20 6d 61 63 68 69 6e 65 73 2c | machines,| 00001f90 20 73 6f 20 52 4f 20 33 2e 35 20 75 73 65 72 73 | so RO 3.5 users| 00001fa0 20 63 61 6e 20 75 73 65 20 49 42 72 6f 77 73 65 | can use IBrowse| 00001fb0 20 6e 6f 77 2e 0a 20 20 20 20 20 20 20 20 20 20 | now.. | 00001fc0 20 20 20 20 20 20 20 20 20 20 20 2d 20 4e 65 65 | - Nee| 00001fd0 64 73 20 61 6e 20 38 4b 20 73 6c 6f 74 20 6e 6f |ds an 8K slot no| 00001fe0 77 2c 20 72 61 74 68 65 72 20 74 68 61 6e 20 34 |w, rather than 4| 00001ff0 4b 20 61 73 20 62 65 66 6f 72 65 2e 0a 20 20 20 |K as before.. | 00002000 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00002010 20 20 2d 20 45 72 72 6f 72 20 64 69 66 66 75 73 | - Error diffus| 00002020 69 6f 6e 20 69 73 20 6e 6f 77 20 74 68 65 20 64 |ion is now the d| 00002030 65 66 61 75 6c 74 2e 0a 0a 0a 20 43 6f 70 79 72 |efault.... Copyr| 00002040 69 67 68 74 20 26 20 43 6f 6e 74 61 63 74 20 41 |ight & Contact A| 00002050 64 64 72 65 73 73 65 73 20 5f 5f 5f 5f 5f 5f 5f |ddresses _______| 00002060 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 00002080 5f 5f 5f 5f 5f 5f 0a 0a 20 20 54 68 69 73 20 70 |______.. This p| 00002090 72 6f 67 72 61 6d 20 69 73 20 70 61 72 74 20 6f |rogram is part o| 000020a0 66 20 74 68 65 20 41 63 6f 72 6e 20 55 73 65 72 |f the Acorn User| 000020b0 20 50 44 20 53 63 68 65 6d 65 2e 20 20 54 68 69 | PD Scheme. Thi| 000020c0 73 20 6d 65 61 6e 73 20 74 68 61 74 20 74 68 72 |s means that thr| 000020d0 65 65 0a 6d 6f 6e 74 68 73 20 61 66 74 65 72 20 |ee.months after | 000020e0 70 75 62 6c 69 63 61 74 69 6f 6e 20 69 74 20 62 |publication it b| 000020f0 65 63 6f 6d 65 73 20 50 44 20 61 6e 64 20 63 61 |ecomes PD and ca| 00002100 6e 20 66 72 6f 6d 20 74 68 65 6e 20 6f 6e 20 62 |n from then on b| 00002110 65 20 66 72 65 65 6c 79 0a 64 69 73 74 72 69 62 |e freely.distrib| 00002120 75 74 65 64 2e 20 20 59 6f 75 20 6d 75 73 74 20 |uted. You must | 00002130 6e 6f 74 20 64 69 73 74 72 69 62 75 74 65 20 69 |not distribute i| 00002140 74 20 77 69 74 68 69 6e 20 74 68 65 20 74 68 72 |t within the thr| 00002150 65 65 20 6d 6f 6e 74 68 20 70 65 72 69 6f 64 0a |ee month period.| 00002160 66 6f 6c 6c 6f 77 69 6e 67 20 69 74 73 20 70 75 |following its pu| 00002170 62 6c 69 63 61 74 69 6f 6e 2e 0a 0a 20 20 54 68 |blication... Th| 00002180 69 73 20 73 6f 66 74 77 61 72 65 20 69 73 20 63 |is software is c| 00002190 6f 70 79 72 69 67 68 74 65 64 20 77 6f 72 6b 20 |opyrighted work | 000021a0 6f 66 20 44 61 76 69 64 20 54 68 6f 6d 61 73 2c |of David Thomas,| 000021b0 20 69 74 20 69 73 20 73 75 70 70 6c 69 65 64 20 | it is supplied | 000021c0 94 61 73 20 69 73 95 3b 0a 75 73 69 6e 67 20 69 |.as is.;.using i| 000021d0 74 20 69 73 20 65 6e 74 69 72 65 6c 79 20 61 74 |t is entirely at| 000021e0 20 79 6f 75 72 20 6f 77 6e 20 72 69 73 6b 2e 20 | your own risk. | 000021f0 20 49 20 6d 61 6b 65 20 6e 6f 20 77 61 72 72 61 | I make no warra| 00002200 6e 74 79 20 61 73 20 74 6f 20 74 68 65 20 66 69 |nty as to the fi| 00002210 74 6e 65 73 73 0a 6f 66 20 74 68 69 73 20 73 6f |tness.of this so| 00002220 66 74 77 61 72 65 20 66 6f 72 20 61 6e 79 20 70 |ftware for any p| 00002230 75 72 70 6f 73 65 2e 20 20 59 6f 75 20 61 72 65 |urpose. You are| 00002240 20 66 72 65 65 2c 20 77 69 74 68 69 6e 20 74 68 | free, within th| 00002250 65 20 62 6f 75 6e 64 20 6f 66 20 74 68 65 20 41 |e bound of the A| 00002260 55 0a 50 44 20 53 63 68 65 6d 65 2c 20 74 6f 20 |U.PD Scheme, to | 00002270 64 69 73 74 72 69 62 75 74 65 20 74 68 69 73 20 |distribute this | 00002280 61 70 70 6c 69 63 61 74 69 6f 6e 20 74 6f 20 61 |application to a| 00002290 6e 79 6f 6e 65 20 79 6f 75 20 70 6c 65 61 73 65 |nyone you please| 000022a0 2c 20 61 73 20 6c 6f 6e 67 20 61 73 0a 79 6f 75 |, as long as.you| 000022b0 20 61 72 65 20 6e 6f 74 20 73 75 70 70 6c 79 69 | are not supplyi| 000022c0 6e 67 20 69 74 20 66 6f 72 20 70 65 72 73 6f 6e |ng it for person| 000022d0 61 6c 20 67 61 69 6e 20 61 6e 64 20 69 74 20 69 |al gain and it i| 000022e0 73 20 64 65 6c 69 76 65 72 65 64 20 77 69 74 68 |s delivered with| 000022f0 20 61 6c 6c 20 74 68 65 0a 73 75 70 70 6c 69 65 | all the.supplie| 00002300 64 20 66 69 6c 65 73 20 75 6e 61 6c 74 65 72 65 |d files unaltere| 00002310 64 2e 0a 0a 20 20 49 66 20 79 6f 75 20 68 61 76 |d... If you hav| 00002320 65 20 61 6e 79 20 63 6f 6d 6d 65 6e 74 73 2c 20 |e any comments, | 00002330 62 75 67 20 72 65 70 6f 72 74 73 2c 20 73 75 67 |bug reports, sug| 00002340 67 65 73 74 69 6f 6e 73 20 66 6f 72 20 66 75 74 |gestions for fut| 00002350 75 72 65 20 76 65 72 73 69 6f 6e 73 20 6f 72 0a |ure versions or.| 00002360 61 6e 79 74 68 69 6e 67 20 65 6c 73 65 20 64 6f |anything else do| 00002370 6e 27 74 20 68 65 73 69 74 61 74 65 20 74 6f 20 |n't hesitate to | 00002380 63 6f 6e 74 61 63 74 20 6d 65 20 61 74 20 2d 0a |contact me at -.| 00002390 0a 20 20 4d 61 69 6c 3a 20 20 4d 72 20 44 2e 50 |. Mail: Mr D.P| 000023a0 2e 20 54 68 6f 6d 61 73 0a 20 20 20 20 20 20 20 |. Thomas. | 000023b0 20 20 32 30 20 52 6f 73 65 62 65 72 79 20 41 76 | 20 Rosebery Av| 000023c0 65 6e 75 65 0a 20 20 20 20 20 20 20 20 20 57 61 |enue. Wa| 000023d0 74 65 72 6c 6f 6f 0a 20 20 20 20 20 20 20 20 20 |terloo. | 000023e0 4c 69 76 65 72 70 6f 6f 6c 0a 20 20 20 20 20 20 |Liverpool. | 000023f0 20 20 20 4c 32 32 20 32 42 48 0a 0a 20 20 45 6d | L22 2BH.. Em| 00002400 61 69 6c 3a 20 43 4d 53 44 54 48 4f 4d 40 6c 69 |ail: CMSDTHOM@li| 00002410 76 6a 6d 2e 61 63 2e 75 6b 0a 0a 20 20 57 57 57 |vjm.ac.uk.. WWW| 00002420 3a 20 20 20 68 74 74 70 3a 2f 2f 77 77 77 2e 63 |: http://www.c| 00002430 6d 73 2e 6c 69 76 6a 6d 2e 61 63 2e 75 6b 2f 77 |ms.livjm.ac.uk/w| 00002440 77 77 2f 68 6f 6d 65 70 61 67 65 2f 63 6d 73 64 |ww/homepage/cmsd| 00002450 74 68 6f 6d 2f 69 6e 64 65 78 2e 68 74 6d 0a 20 |thom/index.htm. | 00002460 20 49 52 43 3a 20 20 20 23 61 63 6f 72 6e 20 61 | IRC: #acorn a| 00002470 73 20 53 70 61 6e 6e 65 72 73 0a 20 20 0a 20 20 |s Spanners. . | 00002480 54 68 65 20 6c 61 74 65 73 74 20 76 65 72 73 69 |The latest versi| 00002490 6f 6e 73 20 6f 66 20 6d 79 20 61 70 70 6c 69 63 |ons of my applic| 000024a0 61 74 69 6f 6e 73 20 77 69 6c 6c 20 62 65 20 61 |ations will be a| 000024b0 76 61 69 6c 61 62 6c 65 20 66 72 6f 6d 20 6d 79 |vailable from my| 000024c0 20 57 6f 72 6c 64 0a 57 69 64 65 20 57 65 62 20 | World.Wide Web | 000024d0 70 61 67 65 73 2c 20 77 68 65 72 65 20 74 65 72 |pages, where ter| 000024e0 6d 20 64 61 74 65 73 20 61 6c 6c 6f 77 2e 0a 5f |m dates allow.._| 000024f0 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 00002530 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 0a 0a |___________..| 0000253d
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