Home » CEEFAX disks » telesoftware17.adl » 04-08-89/DialTxt
04-08-89/DialTxt
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 » CEEFAX disks » telesoftware17.adl |
| Filename: | 04-08-89/DialTxt |
| Read OK: | ✔ |
| File size: | 128C bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
DIAL
----
Owners of the Acorn PRESTEL adaptor that want to use it for
non-viewdata services that produce scrolling, 80 column output have a
problem in that it is not normally possible to use the PRESTEL firmware in
any screen mode other than teletext, and it is not normally possible to
scroll the screen. On the other hand, there are terminal emulator
programmes available that do take non-viewdata services into account, but
they don't contain the necessary routines to operate the autodialler in
the PRESTEL adaptor and switch it on-line when connection is made. DIAL
solves the above problem. It is a short machine-code routine that is
called from disc when the computer is running such a terminal emulator
programme.
The programme to be described is not a terminal emulator in itself;
it is a routine that is loaded from disc and run once, leaving the
computer on-line. In order to use it successfully, the terminal software
must be able to support operating system commands, and the area of memory
where DIAL runs must not be the same as any occupied by the terminal
software. Also, the Acorn PRESTEL ROM must be present. DIAL will run
either in a "bare" BBC Micro or Master, or in the 6502 second processor.
DIAL is supplied as the BASIC and assembly language programme
B.DIAL. On running this the user is prompted for the desired start address
for the machine code. The assembled routine is then saved on the current
disc drive with a file-name of "DIAL". For a computer with no second
processor attached, a load address of &1200 has been found to be suitable,
with DFS as the file-system, but any address higher than that, up to the
start of screen memory less &21D bytes should be just as good. If the
terminal emulator being used is partly or wholly in BASIC, then DIAL will,
of course, have to be positioned somewhere where it can't overlay that
programme (e.g. at &1200). Don't forget that DIAL is only used while
making the call and going on-line; it can be overwritten after that with
complete safety. (However, be warned that, unlike the PRESTEL terminal, it
does not monitor the state of the line continuously after connection is
made, so there is no auto-disconnect if the data carrier drops.) BASIC
programmes that don't support OS commands might lend themselves to
modification, in which case, some lines including the BASIC OSCLI command
will need to be inserted. For example the number to be dialled could be
read from the keyboard into a string, NUM$, which is then used in a line
thus: OSCLI("DIAL "+NUM$). Users of BASIC I have no OSCLI command, but OS
commands with variable arguments can still be used - see the user manual.
In use, start the terminal software, and then enter OS command mode,
issuing *DIAL nn-nnn-nnnn, (one, and only one, space between the "L" of
"DIAL" and the first digit is essential) where "n" is any digit 0-9,and
the "-" is a separator that causes a short delay, and can be put in any
position. For example, to dial BT Gold, type "*DIAL 01-583-1275". The
routine first issues a RESET command to the Adaptor, then checks that it
is connected and switched on, exiting with the message "Adaptor?" if it is
not. If all is well, the adaptor connects to the exchange, waits 4 seconds
and then dials the number, pausing between the digit groups. On completion
of dialling, the adaptor waits for the appearance of data carrier on the
line before connecting the computer, after which the routine terminates,
returning to the terminal emulator. If no data carrier is received within
90 seconds, the routine is exited with a "No data carrier" message. On
completion of a session, pressing "BREAK" will reset the adaptor.
DIAL has been used to good effect in a BBC Micro + 6502 second
processor, running the Master's terminal emulator, enabling the author to
connect to a variety of data services using scrolling and 80 columns.
Note, however, that despite the fact that the Acorn PRESTEL user manual
says that the baud rates can be altered from the standard 1200 in, 75 out,
the hardware in the adaptor will not work properly if you try to set up,
say, 300 bauds send and receive, i.e. it is only a single standard modem,
so any service with which you try to connect must be sending at 1200 baud
and receiving at 75. As the 1200/75 standard is quite common, the user
will not feel unduly restricted!
R.D.Wright 20th Nov 1988
------------------------------------------------------------------------ 00000000 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000010 20 20 20 20 20 20 20 20 20 20 20 20 20 44 49 41 | DIA|
00000020 4c 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |L. |
00000030 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 2d | -|
00000040 2d 2d 2d 0d 0d 20 20 20 20 20 20 20 4f 77 6e 65 |---.. Owne|
00000050 72 73 20 20 6f 66 20 74 68 65 20 41 63 6f 72 6e |rs of the Acorn|
00000060 20 50 52 45 53 54 45 4c 20 20 61 64 61 70 74 6f | PRESTEL adapto|
00000070 72 20 20 74 68 61 74 20 20 77 61 6e 74 20 20 74 |r that want t|
00000080 6f 20 20 75 73 65 20 20 69 74 20 20 66 6f 72 0d |o use it for.|
00000090 6e 6f 6e 2d 76 69 65 77 64 61 74 61 20 73 65 72 |non-viewdata ser|
000000a0 76 69 63 65 73 20 20 74 68 61 74 20 20 70 72 6f |vices that pro|
000000b0 64 75 63 65 20 20 73 63 72 6f 6c 6c 69 6e 67 2c |duce scrolling,|
000000c0 20 20 38 30 20 20 63 6f 6c 75 6d 6e 20 6f 75 74 | 80 column out|
000000d0 70 75 74 20 68 61 76 65 20 61 0d 70 72 6f 62 6c |put have a.probl|
000000e0 65 6d 20 69 6e 20 74 68 61 74 20 69 74 20 69 73 |em in that it is|
000000f0 20 6e 6f 74 20 6e 6f 72 6d 61 6c 6c 79 20 70 6f | not normally po|
00000100 73 73 69 62 6c 65 20 74 6f 20 75 73 65 20 74 68 |ssible to use th|
00000110 65 20 50 52 45 53 54 45 4c 20 66 69 72 6d 77 61 |e PRESTEL firmwa|
00000120 72 65 20 69 6e 0d 61 6e 79 20 73 63 72 65 65 6e |re in.any screen|
00000130 20 6d 6f 64 65 20 6f 74 68 65 72 20 74 68 61 6e | mode other than|
00000140 20 74 65 6c 65 74 65 78 74 2c 20 61 6e 64 20 20 | teletext, and |
00000150 69 74 20 20 69 73 20 20 6e 6f 74 20 6e 6f 72 6d |it is not norm|
00000160 61 6c 6c 79 20 70 6f 73 73 69 62 6c 65 20 74 6f |ally possible to|
00000170 0d 73 63 72 6f 6c 6c 20 20 74 68 65 20 20 73 63 |.scroll the sc|
00000180 72 65 65 6e 2e 20 20 4f 6e 20 20 74 68 65 20 20 |reen. On the |
00000190 6f 74 68 65 72 20 20 68 61 6e 64 2c 20 20 74 68 |other hand, th|
000001a0 65 72 65 20 20 61 72 65 20 20 74 65 72 6d 69 6e |ere are termin|
000001b0 61 6c 20 65 6d 75 6c 61 74 6f 72 0d 70 72 6f 67 |al emulator.prog|
000001c0 72 61 6d 6d 65 73 20 20 61 76 61 69 6c 61 62 6c |rammes availabl|
000001d0 65 20 74 68 61 74 20 64 6f 20 74 61 6b 65 20 6e |e that do take n|
000001e0 6f 6e 2d 76 69 65 77 64 61 74 61 20 73 65 72 76 |on-viewdata serv|
000001f0 69 63 65 73 20 69 6e 74 6f 20 61 63 63 6f 75 6e |ices into accoun|
00000200 74 2c 20 62 75 74 0d 74 68 65 79 20 64 6f 6e 27 |t, but.they don'|
00000210 74 20 20 63 6f 6e 74 61 69 6e 20 20 74 68 65 20 |t contain the |
00000220 20 6e 65 63 65 73 73 61 72 79 20 72 6f 75 74 69 | necessary routi|
00000230 6e 65 73 20 74 6f 20 6f 70 65 72 61 74 65 20 74 |nes to operate t|
00000240 68 65 20 61 75 74 6f 64 69 61 6c 6c 65 72 20 69 |he autodialler i|
00000250 6e 0d 74 68 65 20 50 52 45 53 54 45 4c 20 61 64 |n.the PRESTEL ad|
00000260 61 70 74 6f 72 20 61 6e 64 20 73 77 69 74 63 68 |aptor and switch|
00000270 20 20 69 74 20 20 6f 6e 2d 6c 69 6e 65 20 20 77 | it on-line w|
00000280 68 65 6e 20 63 6f 6e 6e 65 63 74 69 6f 6e 20 69 |hen connection i|
00000290 73 20 6d 61 64 65 2e 20 44 49 41 4c 0d 73 6f 6c |s made. DIAL.sol|
000002a0 76 65 73 20 20 74 68 65 20 20 61 62 6f 76 65 20 |ves the above |
000002b0 70 72 6f 62 6c 65 6d 2e 20 49 74 20 69 73 20 61 |problem. It is a|
000002c0 20 73 68 6f 72 74 20 20 6d 61 63 68 69 6e 65 2d | short machine-|
000002d0 63 6f 64 65 20 20 72 6f 75 74 69 6e 65 20 20 74 |code routine t|
000002e0 68 61 74 20 20 69 73 0d 63 61 6c 6c 65 64 20 66 |hat is.called f|
000002f0 72 6f 6d 20 64 69 73 63 20 20 77 68 65 6e 20 20 |rom disc when |
00000300 74 68 65 20 20 63 6f 6d 70 75 74 65 72 20 20 69 |the computer i|
00000310 73 20 72 75 6e 6e 69 6e 67 20 73 75 63 68 20 61 |s running such a|
00000320 20 74 65 72 6d 69 6e 61 6c 20 65 6d 75 6c 61 74 | terminal emulat|
00000330 6f 72 0d 70 72 6f 67 72 61 6d 6d 65 2e 0d 0d 20 |or.programme... |
00000340 20 20 20 20 20 20 54 68 65 20 70 72 6f 67 72 61 | The progra|
00000350 6d 6d 65 20 74 6f 20 62 65 20 64 65 73 63 72 69 |mme to be descri|
00000360 62 65 64 20 69 73 20 6e 6f 74 20 61 20 74 65 72 |bed is not a ter|
00000370 6d 69 6e 61 6c 20 65 6d 75 6c 61 74 6f 72 20 69 |minal emulator i|
00000380 6e 20 69 74 73 65 6c 66 3b 0d 69 74 20 69 73 20 |n itself;.it is |
00000390 61 20 72 6f 75 74 69 6e 65 20 74 68 61 74 20 20 |a routine that |
000003a0 69 73 20 20 6c 6f 61 64 65 64 20 20 66 72 6f 6d |is loaded from|
000003b0 20 20 64 69 73 63 20 20 61 6e 64 20 20 72 75 6e | disc and run|
000003c0 20 20 6f 6e 63 65 2c 20 20 6c 65 61 76 69 6e 67 | once, leaving|
000003d0 20 74 68 65 0d 63 6f 6d 70 75 74 65 72 20 20 6f | the.computer o|
000003e0 6e 2d 6c 69 6e 65 2e 20 20 49 6e 20 6f 72 64 65 |n-line. In orde|
000003f0 72 20 74 6f 20 75 73 65 20 69 74 20 73 75 63 63 |r to use it succ|
00000400 65 73 73 66 75 6c 6c 79 2c 20 74 68 65 20 74 65 |essfully, the te|
00000410 72 6d 69 6e 61 6c 20 73 6f 66 74 77 61 72 65 0d |rminal software.|
00000420 6d 75 73 74 20 62 65 20 61 62 6c 65 20 20 74 6f |must be able to|
00000430 20 73 75 70 70 6f 72 74 20 6f 70 65 72 61 74 69 | support operati|
00000440 6e 67 20 73 79 73 74 65 6d 20 63 6f 6d 6d 61 6e |ng system comman|
00000450 64 73 2c 20 61 6e 64 20 74 68 65 20 61 72 65 61 |ds, and the area|
00000460 20 6f 66 20 6d 65 6d 6f 72 79 0d 77 68 65 72 65 | of memory.where|
00000470 20 44 49 41 4c 20 72 75 6e 73 20 6d 75 73 74 20 | DIAL runs must |
00000480 20 6e 6f 74 20 20 62 65 20 20 74 68 65 20 20 73 | not be the s|
00000490 61 6d 65 20 20 61 73 20 20 61 6e 79 20 6f 63 63 |ame as any occ|
000004a0 75 70 69 65 64 20 62 79 20 74 68 65 20 74 65 72 |upied by the ter|
000004b0 6d 69 6e 61 6c 0d 73 6f 66 74 77 61 72 65 2e 20 |minal.software. |
000004c0 20 41 6c 73 6f 2c 20 20 74 68 65 20 20 41 63 6f | Also, the Aco|
000004d0 72 6e 20 20 50 52 45 53 54 45 4c 20 52 4f 4d 20 |rn PRESTEL ROM |
000004e0 6d 75 73 74 20 62 65 20 70 72 65 73 65 6e 74 2e |must be present.|
000004f0 20 44 49 41 4c 20 20 77 69 6c 6c 20 20 72 75 6e | DIAL will run|
00000500 0d 65 69 74 68 65 72 20 69 6e 20 61 20 22 62 61 |.either in a "ba|
00000510 72 65 22 20 42 42 43 20 4d 69 63 72 6f 20 6f 72 |re" BBC Micro or|
00000520 20 4d 61 73 74 65 72 2c 20 6f 72 20 69 6e 20 74 | Master, or in t|
00000530 68 65 20 36 35 30 32 20 73 65 63 6f 6e 64 20 70 |he 6502 second p|
00000540 72 6f 63 65 73 73 6f 72 2e 0d 0d 20 20 20 20 20 |rocessor... |
00000550 20 20 44 49 41 4c 20 20 69 73 20 73 75 70 70 6c | DIAL is suppl|
00000560 69 65 64 20 61 73 20 74 68 65 20 20 42 41 53 49 |ied as the BASI|
00000570 43 20 20 61 6e 64 20 20 61 73 73 65 6d 62 6c 79 |C and assembly|
00000580 20 20 6c 61 6e 67 75 61 67 65 20 20 70 72 6f 67 | language prog|
00000590 72 61 6d 6d 65 0d 42 2e 44 49 41 4c 2e 20 4f 6e |ramme.B.DIAL. On|
000005a0 20 72 75 6e 6e 69 6e 67 20 74 68 69 73 20 74 68 | running this th|
000005b0 65 20 75 73 65 72 20 69 73 20 70 72 6f 6d 70 74 |e user is prompt|
000005c0 65 64 20 66 6f 72 20 74 68 65 20 64 65 73 69 72 |ed for the desir|
000005d0 65 64 20 73 74 61 72 74 20 61 64 64 72 65 73 73 |ed start address|
000005e0 0d 66 6f 72 20 74 68 65 20 20 6d 61 63 68 69 6e |.for the machin|
000005f0 65 20 20 63 6f 64 65 2e 20 54 68 65 20 61 73 73 |e code. The ass|
00000600 65 6d 62 6c 65 64 20 72 6f 75 74 69 6e 65 20 69 |embled routine i|
00000610 73 20 74 68 65 6e 20 73 61 76 65 64 20 6f 6e 20 |s then saved on |
00000620 74 68 65 20 63 75 72 72 65 6e 74 0d 64 69 73 63 |the current.disc|
00000630 20 64 72 69 76 65 20 77 69 74 68 20 61 20 20 66 | drive with a f|
00000640 69 6c 65 2d 6e 61 6d 65 20 20 6f 66 20 20 22 44 |ile-name of "D|
00000650 49 41 4c 22 2e 20 20 46 6f 72 20 20 61 20 20 63 |IAL". For a c|
00000660 6f 6d 70 75 74 65 72 20 77 69 74 68 20 6e 6f 20 |omputer with no |
00000670 73 65 63 6f 6e 64 0d 70 72 6f 63 65 73 73 6f 72 |second.processor|
00000680 20 61 74 74 61 63 68 65 64 2c 20 61 20 6c 6f 61 | attached, a loa|
00000690 64 20 61 64 64 72 65 73 73 20 6f 66 20 26 31 32 |d address of &12|
000006a0 30 30 20 68 61 73 20 62 65 65 6e 20 66 6f 75 6e |00 has been foun|
000006b0 64 20 74 6f 20 62 65 20 73 75 69 74 61 62 6c 65 |d to be suitable|
000006c0 2c 0d 77 69 74 68 20 44 46 53 20 61 73 20 74 68 |,.with DFS as th|
000006d0 65 20 66 69 6c 65 2d 73 79 73 74 65 6d 2c 20 62 |e file-system, b|
000006e0 75 74 20 61 6e 79 20 61 64 64 72 65 73 73 20 68 |ut any address h|
000006f0 69 67 68 65 72 20 74 68 61 6e 20 20 74 68 61 74 |igher than that|
00000700 2c 20 20 75 70 20 74 6f 20 74 68 65 0d 73 74 61 |, up to the.sta|
00000710 72 74 20 20 6f 66 20 20 73 63 72 65 65 6e 20 20 |rt of screen |
00000720 6d 65 6d 6f 72 79 20 6c 65 73 73 20 26 32 31 44 |memory less &21D|
00000730 20 62 79 74 65 73 20 73 68 6f 75 6c 64 20 62 65 | bytes should be|
00000740 20 6a 75 73 74 20 61 73 20 67 6f 6f 64 2e 20 20 | just as good. |
00000750 49 66 20 20 74 68 65 0d 74 65 72 6d 69 6e 61 6c |If the.terminal|
00000760 20 65 6d 75 6c 61 74 6f 72 20 62 65 69 6e 67 20 | emulator being |
00000770 75 73 65 64 20 69 73 20 70 61 72 74 6c 79 20 6f |used is partly o|
00000780 72 20 77 68 6f 6c 6c 79 20 69 6e 20 42 41 53 49 |r wholly in BASI|
00000790 43 2c 20 74 68 65 6e 20 44 49 41 4c 20 77 69 6c |C, then DIAL wil|
000007a0 6c 2c 0d 6f 66 20 63 6f 75 72 73 65 2c 20 68 61 |l,.of course, ha|
000007b0 76 65 20 74 6f 20 20 62 65 20 20 70 6f 73 69 74 |ve to be posit|
000007c0 69 6f 6e 65 64 20 20 73 6f 6d 65 77 68 65 72 65 |ioned somewhere|
000007d0 20 20 77 68 65 72 65 20 69 74 20 63 61 6e 27 74 | where it can't|
000007e0 20 6f 76 65 72 6c 61 79 20 74 68 61 74 0d 70 72 | overlay that.pr|
000007f0 6f 67 72 61 6d 6d 65 20 20 28 65 2e 67 2e 20 20 |ogramme (e.g. |
00000800 61 74 20 26 31 32 30 30 29 2e 20 44 6f 6e 27 74 |at &1200). Don't|
00000810 20 66 6f 72 67 65 74 20 74 68 61 74 20 44 49 41 | forget that DIA|
00000820 4c 20 20 69 73 20 20 6f 6e 6c 79 20 20 75 73 65 |L is only use|
00000830 64 20 20 77 68 69 6c 65 0d 6d 61 6b 69 6e 67 20 |d while.making |
00000840 74 68 65 20 63 61 6c 6c 20 20 61 6e 64 20 20 67 |the call and g|
00000850 6f 69 6e 67 20 6f 6e 2d 6c 69 6e 65 3b 20 69 74 |oing on-line; it|
00000860 20 63 61 6e 20 62 65 20 6f 76 65 72 77 72 69 74 | can be overwrit|
00000870 74 65 6e 20 61 66 74 65 72 20 74 68 61 74 20 77 |ten after that w|
00000880 69 74 68 0d 63 6f 6d 70 6c 65 74 65 20 73 61 66 |ith.complete saf|
00000890 65 74 79 2e 20 28 48 6f 77 65 76 65 72 2c 20 62 |ety. (However, b|
000008a0 65 20 77 61 72 6e 65 64 20 74 68 61 74 2c 20 75 |e warned that, u|
000008b0 6e 6c 69 6b 65 20 74 68 65 20 50 52 45 53 54 45 |nlike the PRESTE|
000008c0 4c 20 74 65 72 6d 69 6e 61 6c 2c 20 69 74 0d 64 |L terminal, it.d|
000008d0 6f 65 73 20 6e 6f 74 20 6d 6f 6e 69 74 6f 72 20 |oes not monitor |
000008e0 74 68 65 20 73 74 61 74 65 20 20 6f 66 20 20 74 |the state of t|
000008f0 68 65 20 20 6c 69 6e 65 20 63 6f 6e 74 69 6e 75 |he line continu|
00000900 6f 75 73 6c 79 20 61 66 74 65 72 20 63 6f 6e 6e |ously after conn|
00000910 65 63 74 69 6f 6e 20 69 73 0d 6d 61 64 65 2c 20 |ection is.made, |
00000920 73 6f 20 74 68 65 72 65 20 69 73 20 6e 6f 20 61 |so there is no a|
00000930 75 74 6f 2d 64 69 73 63 6f 6e 6e 65 63 74 20 69 |uto-disconnect i|
00000940 66 20 74 68 65 20 20 64 61 74 61 20 20 63 61 72 |f the data car|
00000950 72 69 65 72 20 20 64 72 6f 70 73 2e 29 20 20 42 |rier drops.) B|
00000960 41 53 49 43 0d 70 72 6f 67 72 61 6d 6d 65 73 20 |ASIC.programmes |
00000970 20 74 68 61 74 20 20 64 6f 6e 27 74 20 20 73 75 | that don't su|
00000980 70 70 6f 72 74 20 20 4f 53 20 20 63 6f 6d 6d 61 |pport OS comma|
00000990 6e 64 73 20 20 6d 69 67 68 74 20 20 6c 65 6e 64 |nds might lend|
000009a0 20 20 74 68 65 6d 73 65 6c 76 65 73 20 74 6f 0d | themselves to.|
000009b0 6d 6f 64 69 66 69 63 61 74 69 6f 6e 2c 20 69 6e |modification, in|
000009c0 20 77 68 69 63 68 20 63 61 73 65 2c 20 73 6f 6d | which case, som|
000009d0 65 20 6c 69 6e 65 73 20 69 6e 63 6c 75 64 69 6e |e lines includin|
000009e0 67 20 74 68 65 20 20 42 41 53 49 43 20 4f 53 43 |g the BASIC OSC|
000009f0 4c 49 20 63 6f 6d 6d 61 6e 64 0d 77 69 6c 6c 20 |LI command.will |
00000a00 6e 65 65 64 20 74 6f 20 62 65 20 69 6e 73 65 72 |need to be inser|
00000a10 74 65 64 2e 20 46 6f 72 20 65 78 61 6d 70 6c 65 |ted. For example|
00000a20 20 74 68 65 20 6e 75 6d 62 65 72 20 20 74 6f 20 | the number to |
00000a30 20 62 65 20 20 64 69 61 6c 6c 65 64 20 63 6f 75 | be dialled cou|
00000a40 6c 64 20 62 65 0d 72 65 61 64 20 66 72 6f 6d 20 |ld be.read from |
00000a50 74 68 65 20 6b 65 79 62 6f 61 72 64 20 69 6e 74 |the keyboard int|
00000a60 6f 20 61 20 73 74 72 69 6e 67 2c 20 4e 55 4d 24 |o a string, NUM$|
00000a70 2c 20 77 68 69 63 68 20 69 73 20 74 68 65 6e 20 |, which is then |
00000a80 75 73 65 64 20 20 69 6e 20 20 61 20 6c 69 6e 65 |used in a line|
00000a90 0d 74 68 75 73 3a 20 20 4f 53 43 4c 49 28 22 44 |.thus: OSCLI("D|
00000aa0 49 41 4c 20 22 2b 4e 55 4d 24 29 2e 20 55 73 65 |IAL "+NUM$). Use|
00000ab0 72 73 20 6f 66 20 42 41 53 49 43 20 49 20 68 61 |rs of BASIC I ha|
00000ac0 76 65 20 6e 6f 20 4f 53 43 4c 49 20 63 6f 6d 6d |ve no OSCLI comm|
00000ad0 61 6e 64 2c 20 62 75 74 20 4f 53 0d 63 6f 6d 6d |and, but OS.comm|
00000ae0 61 6e 64 73 20 77 69 74 68 20 76 61 72 69 61 62 |ands with variab|
00000af0 6c 65 20 61 72 67 75 6d 65 6e 74 73 20 63 61 6e |le arguments can|
00000b00 20 73 74 69 6c 6c 20 62 65 20 75 73 65 64 20 2d | still be used -|
00000b10 20 73 65 65 20 74 68 65 20 75 73 65 72 20 6d 61 | see the user ma|
00000b20 6e 75 61 6c 2e 0d 0d 0d 20 20 20 20 20 20 49 6e |nual.... In|
00000b30 20 75 73 65 2c 20 73 74 61 72 74 20 74 68 65 20 | use, start the |
00000b40 74 65 72 6d 69 6e 61 6c 20 73 6f 66 74 77 61 72 |terminal softwar|
00000b50 65 2c 20 61 6e 64 20 74 68 65 6e 20 65 6e 74 65 |e, and then ente|
00000b60 72 20 4f 53 20 63 6f 6d 6d 61 6e 64 20 6d 6f 64 |r OS command mod|
00000b70 65 2c 0d 69 73 73 75 69 6e 67 20 2a 44 49 41 4c |e,.issuing *DIAL|
00000b80 20 6e 6e 2d 6e 6e 6e 2d 6e 6e 6e 6e 2c 20 28 6f | nn-nnn-nnnn, (o|
00000b90 6e 65 2c 20 61 6e 64 20 20 6f 6e 6c 79 20 20 6f |ne, and only o|
00000ba0 6e 65 2c 20 20 73 70 61 63 65 20 62 65 74 77 65 |ne, space betwe|
00000bb0 65 6e 20 74 68 65 20 22 4c 22 20 6f 66 0d 22 44 |en the "L" of."D|
00000bc0 49 41 4c 22 20 61 6e 64 20 74 68 65 20 66 69 72 |IAL" and the fir|
00000bd0 73 74 20 64 69 67 69 74 20 69 73 20 65 73 73 65 |st digit is esse|
00000be0 6e 74 69 61 6c 29 20 77 68 65 72 65 20 20 22 6e |ntial) where "n|
00000bf0 22 20 20 69 73 20 20 61 6e 79 20 64 69 67 69 74 |" is any digit|
00000c00 20 30 2d 39 2c 61 6e 64 0d 74 68 65 20 22 2d 22 | 0-9,and.the "-"|
00000c10 20 69 73 20 61 20 73 65 70 61 72 61 74 6f 72 20 | is a separator |
00000c20 74 68 61 74 20 63 61 75 73 65 73 20 61 20 73 68 |that causes a sh|
00000c30 6f 72 74 20 64 65 6c 61 79 2c 20 61 6e 64 20 20 |ort delay, and |
00000c40 63 61 6e 20 20 62 65 20 20 70 75 74 20 69 6e 20 |can be put in |
00000c50 61 6e 79 0d 70 6f 73 69 74 69 6f 6e 2e 20 20 46 |any.position. F|
00000c60 6f 72 20 20 65 78 61 6d 70 6c 65 2c 20 20 74 6f |or example, to|
00000c70 20 20 64 69 61 6c 20 20 42 54 20 47 6f 6c 64 2c | dial BT Gold,|
00000c80 20 74 79 70 65 20 22 2a 44 49 41 4c 20 30 31 2d | type "*DIAL 01-|
00000c90 35 38 33 2d 31 32 37 35 22 2e 20 54 68 65 0d 72 |583-1275". The.r|
00000ca0 6f 75 74 69 6e 65 20 20 66 69 72 73 74 20 69 73 |outine first is|
00000cb0 73 75 65 73 20 61 20 52 45 53 45 54 20 63 6f 6d |sues a RESET com|
00000cc0 6d 61 6e 64 20 20 74 6f 20 74 68 65 20 41 64 61 |mand to the Ada|
00000cd0 70 74 6f 72 2c 20 74 68 65 6e 20 63 68 65 63 6b |ptor, then check|
00000ce0 73 20 74 68 61 74 20 69 74 0d 69 73 20 63 6f 6e |s that it.is con|
00000cf0 6e 65 63 74 65 64 20 61 6e 64 20 73 77 69 74 63 |nected and switc|
00000d00 68 65 64 20 6f 6e 2c 20 65 78 69 74 69 6e 67 20 |hed on, exiting |
00000d10 77 69 74 68 20 74 68 65 20 6d 65 73 73 61 67 65 |with the message|
00000d20 20 22 41 64 61 70 74 6f 72 3f 22 20 69 66 20 69 | "Adaptor?" if i|
00000d30 74 20 69 73 0d 6e 6f 74 2e 20 49 66 20 61 6c 6c |t is.not. If all|
00000d40 20 69 73 20 77 65 6c 6c 2c 20 74 68 65 20 61 64 | is well, the ad|
00000d50 61 70 74 6f 72 20 63 6f 6e 6e 65 63 74 73 20 74 |aptor connects t|
00000d60 6f 20 74 68 65 20 65 78 63 68 61 6e 67 65 2c 20 |o the exchange, |
00000d70 77 61 69 74 73 20 34 20 73 65 63 6f 6e 64 73 0d |waits 4 seconds.|
00000d80 61 6e 64 20 74 68 65 6e 20 64 69 61 6c 73 20 74 |and then dials t|
00000d90 68 65 20 6e 75 6d 62 65 72 2c 20 70 61 75 73 69 |he number, pausi|
00000da0 6e 67 20 62 65 74 77 65 65 6e 20 74 68 65 20 64 |ng between the d|
00000db0 69 67 69 74 20 67 72 6f 75 70 73 2e 20 4f 6e 20 |igit groups. On |
00000dc0 63 6f 6d 70 6c 65 74 69 6f 6e 0d 6f 66 20 64 69 |completion.of di|
00000dd0 61 6c 6c 69 6e 67 2c 20 74 68 65 20 61 64 61 70 |alling, the adap|
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00000e20 72 65 20 20 63 6f 6e 6e 65 63 74 69 6e 67 20 74 |re connecting t|
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00000e40 65 72 20 77 68 69 63 68 20 74 68 65 20 72 6f 75 |er which the rou|
00000e50 74 69 6e 65 20 74 65 72 6d 69 6e 61 74 65 73 2c |tine terminates,|
00000e60 0d 72 65 74 75 72 6e 69 6e 67 20 74 6f 20 74 68 |.returning to th|
00000e70 65 20 20 74 65 72 6d 69 6e 61 6c 20 65 6d 75 6c |e terminal emul|
00000e80 61 74 6f 72 2e 20 49 66 20 6e 6f 20 64 61 74 61 |ator. If no data|
00000e90 20 63 61 72 72 69 65 72 20 69 73 20 72 65 63 65 | carrier is rece|
00000ea0 69 76 65 64 20 77 69 74 68 69 6e 0d 39 30 20 73 |ived within.90 s|
00000eb0 65 63 6f 6e 64 73 2c 20 74 68 65 20 72 6f 75 74 |econds, the rout|
00000ec0 69 6e 65 20 20 69 73 20 20 65 78 69 74 65 64 20 |ine is exited |
00000ed0 20 77 69 74 68 20 20 61 20 22 4e 6f 20 64 61 74 | with a "No dat|
00000ee0 61 20 63 61 72 72 69 65 72 22 20 6d 65 73 73 61 |a carrier" messa|
00000ef0 67 65 2e 20 4f 6e 0d 63 6f 6d 70 6c 65 74 69 6f |ge. On.completio|
00000f00 6e 20 6f 66 20 61 20 73 65 73 73 69 6f 6e 2c 20 |n of a session, |
00000f10 70 72 65 73 73 69 6e 67 20 22 42 52 45 41 4b 22 |pressing "BREAK"|
00000f20 20 77 69 6c 6c 20 72 65 73 65 74 20 74 68 65 20 | will reset the |
00000f30 61 64 61 70 74 6f 72 2e 0d 0d 20 20 20 20 20 20 |adaptor... |
00000f40 20 44 49 41 4c 20 68 61 73 20 62 65 65 6e 20 75 | DIAL has been u|
00000f50 73 65 64 20 74 6f 20 20 67 6f 6f 64 20 20 65 66 |sed to good ef|
00000f60 66 65 63 74 20 20 69 6e 20 20 61 20 20 42 42 43 |fect in a BBC|
00000f70 20 4d 69 63 72 6f 20 2b 20 36 35 30 32 20 73 65 | Micro + 6502 se|
00000f80 63 6f 6e 64 0d 70 72 6f 63 65 73 73 6f 72 2c 20 |cond.processor, |
00000f90 20 72 75 6e 6e 69 6e 67 20 74 68 65 20 4d 61 73 | running the Mas|
00000fa0 74 65 72 27 73 20 74 65 72 6d 69 6e 61 6c 20 65 |ter's terminal e|
00000fb0 6d 75 6c 61 74 6f 72 2c 20 65 6e 61 62 6c 69 6e |mulator, enablin|
00000fc0 67 20 74 68 65 20 61 75 74 68 6f 72 20 74 6f 0d |g the author to.|
00000fd0 63 6f 6e 6e 65 63 74 20 74 6f 20 20 61 20 20 76 |connect to a v|
00000fe0 61 72 69 65 74 79 20 20 6f 66 20 20 64 61 74 61 |ariety of data|
00000ff0 20 20 73 65 72 76 69 63 65 73 20 75 73 69 6e 67 | services using|
00001000 20 73 63 72 6f 6c 6c 69 6e 67 20 61 6e 64 20 38 | scrolling and 8|
00001010 30 20 63 6f 6c 75 6d 6e 73 2e 0d 4e 6f 74 65 2c |0 columns..Note,|
00001020 20 68 6f 77 65 76 65 72 2c 20 74 68 61 74 20 64 | however, that d|
00001030 65 73 70 69 74 65 20 74 68 65 20 66 61 63 74 20 |espite the fact |
00001040 74 68 61 74 20 20 74 68 65 20 20 41 63 6f 72 6e |that the Acorn|
00001050 20 20 50 52 45 53 54 45 4c 20 75 73 65 72 20 6d | PRESTEL user m|
00001060 61 6e 75 61 6c 0d 73 61 79 73 20 74 68 61 74 20 |anual.says that |
00001070 74 68 65 20 62 61 75 64 20 72 61 74 65 73 20 63 |the baud rates c|
00001080 61 6e 20 62 65 20 61 6c 74 65 72 65 64 20 66 72 |an be altered fr|
00001090 6f 6d 20 74 68 65 20 73 74 61 6e 64 61 72 64 20 |om the standard |
000010a0 31 32 30 30 20 69 6e 2c 20 37 35 20 6f 75 74 2c |1200 in, 75 out,|
000010b0 0d 74 68 65 20 68 61 72 64 77 61 72 65 20 69 6e |.the hardware in|
000010c0 20 74 68 65 20 61 64 61 70 74 6f 72 20 77 69 6c | the adaptor wil|
000010d0 6c 20 6e 6f 74 20 77 6f 72 6b 20 70 72 6f 70 65 |l not work prope|
000010e0 72 6c 79 20 69 66 20 20 79 6f 75 20 20 74 72 79 |rly if you try|
000010f0 20 74 6f 20 73 65 74 20 75 70 2c 0d 73 61 79 2c | to set up,.say,|
00001100 20 33 30 30 20 62 61 75 64 73 20 73 65 6e 64 20 | 300 bauds send |
00001110 61 6e 64 20 72 65 63 65 69 76 65 2c 20 69 2e 65 |and receive, i.e|
00001120 2e 20 69 74 20 69 73 20 6f 6e 6c 79 20 61 20 73 |. it is only a s|
00001130 69 6e 67 6c 65 20 20 73 74 61 6e 64 61 72 64 20 |ingle standard |
00001140 6d 6f 64 65 6d 2c 0d 73 6f 20 61 6e 79 20 73 65 |modem,.so any se|
00001150 72 76 69 63 65 20 77 69 74 68 20 77 68 69 63 68 |rvice with which|
00001160 20 79 6f 75 20 74 72 79 20 74 6f 20 63 6f 6e 6e | you try to conn|
00001170 65 63 74 20 6d 75 73 74 20 62 65 20 73 65 6e 64 |ect must be send|
00001180 69 6e 67 20 61 74 20 20 31 32 30 30 20 62 61 75 |ing at 1200 bau|
00001190 64 0d 61 6e 64 20 20 72 65 63 65 69 76 69 6e 67 |d.and receiving|
000011a0 20 20 61 74 20 20 37 35 2e 20 20 41 73 20 74 68 | at 75. As th|
000011b0 65 20 31 32 30 30 2f 37 35 20 73 74 61 6e 64 61 |e 1200/75 standa|
000011c0 72 64 20 69 73 20 71 75 69 74 65 20 63 6f 6d 6d |rd is quite comm|
000011d0 6f 6e 2c 20 74 68 65 20 75 73 65 72 0d 77 69 6c |on, the user.wil|
000011e0 6c 20 6e 6f 74 20 66 65 65 6c 20 75 6e 64 75 6c |l not feel undul|
000011f0 79 20 72 65 73 74 72 69 63 74 65 64 21 0d 0d 0d |y restricted!...|
00001200 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
00001220 20 20 20 20 20 20 20 20 52 2e 44 2e 57 72 69 67 | R.D.Wrig|
00001230 68 74 20 20 20 32 30 74 68 20 4e 6f 76 20 31 39 |ht 20th Nov 19|
00001240 38 38 0d 0d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |88..------------|
00001250 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00001280 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |------------|
0000128c 
04-08-89/DialTxt.m0
04-08-89/DialTxt.m1
04-08-89/DialTxt.m2
04-08-89/DialTxt.m4
04-08-89/DialTxt.m5
.