Home » CEEFAX disks » telesoftware11.adl » 02-12-88/T\SWR22
02-12-88/T\SWR22
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 » telesoftware11.adl |
| Filename: | 02-12-88/T\SWR22 |
| Read OK: | ✔ |
| File size: | 1B2B bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
Duplicates
There is 1 duplicate copy of this file in the archive:
- CEEFAX disks » telesoftware11.adl » 02-12-88/T\SWR22
- CEEFAX disks » telesoftware6.adl » 04-04-88/T\SWR22
File contents
Mastering Sideways ROM & RAM - Module 22 - RFS cartridges
---------------------------------------------------------
The RFS language rom introduced in Module 21 can be modified to
auto-boot from any rom socket. The method used to achieve this uses an
"illegal" interception of service call &FE and it is not fully
compatible with a 6502 second processor. In spite of this it can be
quite a useful modification to make to the RFS service call
interpreter for software stored in rom cartridges. A rom cartridge
formatted with the program AUTORFS will always boot itself when the
Break key is pressed.
Language roms in low priority sockets are usually entered by typing
a * command which is compared with the rom's title string and the rom
is selected with Osbyte &8E when a match is found (see Module 17). The
service call interpreter in the program AUTORFS does not intercept
service call 4 to select the language in this way. Instead it
intercepts service call &FE as shown in figure 22.1. If you have been
following the course you will know that service call &FE is issued by
the MOS on both hard and soft reset and can be intercepted for illegal
purposes as long as the registers are restored after the illegal
activity (see module 12).
.service
PHA \ store accumulator
CMP #&FE \ is this service call &FE?
BNE trythirteen \ if not branch to RFS interpreter
TXA
PHA \ store X
TYA
PHA \ store Y
LDA #&FC \ Osbyte &FC
LDX &F4 \ load X with this rom number
LDY #0 \ and make this rom number
JSR &FFF4 \ the current language after reset
PLA \ pull Y
TAY \ restore Y
PLA \ pull X
TAX \ restore X
PLA \ retore A
RTS \ and return
.trythirteen
Figure 22.1 Intercepting service call &FE.
----------- ------------------------------
The rom interpreter intercepts service call &FE and uses Osbyte &FC
to write the number of the rom to be entered following a soft reset
(Break). Using Osbyte &FC in this way stores the number of the rom
cartridge in location &28C. The rom whose number is stored in this
location is entered following a soft reset or a BRK (error). The RFS
rom cartridge will be entered after pressing the Break key as long as
BASIC is the highest priority language. When you write programs to be
stored in RFS rom cartridges there is no need to trap the Break key
because AUTORFS will do this for you.
If the AUTORFS rom image is installed in socket &0F and the programs
stored in the RFS disable the Escape key then it is difficult to stop
the software running. Pressing Break, Ctrl+Break and Shift+Break will
all boot the RFS software. Shift+Break will attempt to boot a disc but
the rom will still boot afterwards. Software formatted in this way can
be permanently installed in socket &0F of a computer which is
dedicated to a well defined task such as controling laboratory
equipment. Installing the software in socket &0F also gives some
limited Tube compatibility and the language will boot in a 6502 second
processor after Ctrl+Break.
The program AUTORFS must be used with the formatting program RFSGEN
and whatever programs you want to store in the RFS. These programs are
used to create the RFS rom image and detailed instructions on using
them were included in Module 18. AUTORFS was written to be used with
the supplied demonstration program DEMO. If you want to use it with
any other program you will need to alter the command string in lines
1160 to 1180.
10 REM: AUTORFS
20 MODE7
30 HIMEM=&3C00
40 diff=&8000-HIMEM
50 H%=HIMEM
60 romnumber=&F4
70 phrom=&F5
80 rompoint=&F6
90 breakv=&202
100 osbyte=&FFF4
110 FOR pass = 0 TO 2 STEP 2
120 P%=HIMEM
130 [ OPT pass
140 JMP language+diff
150 JMP service+diff
160 OPT FNequb(&C2)
170 OPT FNequb((copyright+diff) MOD 256)
180 BRK
190 OPT FNequs("AUTORFS")
200 .copyright
210 BRK
220 OPT FNequs("(C) Gordon Horsington 1987")
230 BRK
240 .service
250 PHA
260 CMP #&FE
270 BNE trythirteen
280 TXA
290 PHA
300 TYA
310 PHA
320 LDA #&FC
330 LDX romnumber
340 LDY #0
350 JSR osbyte
360 PLA
370 TAY
380 PLA
390 TAX
400 PLA
410 RTS
420 .trythirteen
430 CMP #13
440 BNE fourteen
450 TYA
460 EOR #&F
470 CMP romnumber
480 BCC out
490 LDA #(lastbyte+diff) MOD 256
500 STA rompoint
510 LDA #(lastbyte+diff) DIV 256
520 STA rompoint+1
530 LDA romnumber
540 EOR #&F
550 STA phrom
560 .exit
570 PLA
580 LDA #0
590 RTS
600 .fourteen
610 CMP #14
620 BNE out
630 LDA phrom
640 EOR #&F
650 CMP romnumber
660 BNE out
670 LDY #0
680 LDA (rompoint),Y
690 TAY
700 INC rompoint
710 BNE exit
720 INC rompoint+1
730 JMP exit+diff
740 .out
750 PLA
760 RTS
770 .language
780 CLI \ Enable interupt requests
790 LDX #&FF
800 TXS \ Reset stack
810 LDA #(basic+diff) MOD 256
820 STA breakv
830 LDA #(basic+diff) DIV 256
840 STA breakv+1
850 LDA #&8D
860 JSR osbyte \ *ROM
870 LDA #&8B
880 LDX #1
890 LDY #0
900 JSR osbyte \ *OPT1,0
910 LDA #&0F
920 LDX #0
930 JSR osbyte \ Flush all buffers
940 LDA #&FF
950 PHA
960 .keyboard
970 PLA
980 TAX
990 INX
1000 TXA
1010 PHA
1020 LDY rfscomm+diff,X
1030 BEQ basic
1040 LDA #&8A
1050 LDX #0
1060 JSR osbyte
1070 JMP keyboard+diff
1080 .basic
1090 LDA #&BB
1100 LDX #0
1110 LDY #&FF
1120 JSR osbyte \ Find BASIC
1130 LDA #&8E
1140 JMP osbyte \ Enter BASIC
1150 .rfscomm
1160 OPT FNequs("CHAIN""DEMO""")
1170 OPT FNequb(&0D)
1180 BRK
1190 .lastbyte
1200 ]
1210 NEXT
1220 O%=lastbyte
1230 CHAIN"RFSGEN"
1240 DEFFNequb(byte)
1250 ?P%=byte
1260 P%=P%+1
1270 =pass
1280 DEFFNequw(word)
1290 ?P%=word MOD 256
1300 P%?1=word DIV 256
1310 P%=P%+2
1320 =pass
1330 DEFFNequd(double)
1340 !P%=double
1350 P%=P%+4
1360 =pass
1370 DEFFNequs(string$)
1380 $P%=string$
1390 P%=P%+LEN(string$)
1400 =pass
00000000 4d 61 73 74 65 72 69 6e 67 20 53 69 64 65 77 61 |Mastering Sidewa|
00000010 79 73 20 52 4f 4d 20 26 20 52 41 4d 20 2d 20 4d |ys ROM & RAM - M|
00000020 6f 64 75 6c 65 20 32 32 20 2d 20 52 46 53 20 63 |odule 22 - RFS c|
00000030 61 72 74 72 69 64 67 65 73 0d 2d 2d 2d 2d 2d 2d |artridges.------|
00000040 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000070 2d 2d 2d 0d 0d 20 20 54 68 65 20 52 46 53 20 6c |---.. The RFS l|
00000080 61 6e 67 75 61 67 65 20 72 6f 6d 20 69 6e 74 72 |anguage rom intr|
00000090 6f 64 75 63 65 64 20 69 6e 20 4d 6f 64 75 6c 65 |oduced in Module|
000000a0 20 32 31 20 63 61 6e 20 62 65 20 6d 6f 64 69 66 | 21 can be modif|
000000b0 69 65 64 20 74 6f 0d 61 75 74 6f 2d 62 6f 6f 74 |ied to.auto-boot|
000000c0 20 66 72 6f 6d 20 61 6e 79 20 72 6f 6d 20 73 6f | from any rom so|
000000d0 63 6b 65 74 2e 20 54 68 65 20 6d 65 74 68 6f 64 |cket. The method|
000000e0 20 75 73 65 64 20 74 6f 20 61 63 68 69 65 76 65 | used to achieve|
000000f0 20 74 68 69 73 20 75 73 65 73 20 61 6e 0d 22 69 | this uses an."i|
00000100 6c 6c 65 67 61 6c 22 20 69 6e 74 65 72 63 65 70 |llegal" intercep|
00000110 74 69 6f 6e 20 6f 66 20 73 65 72 76 69 63 65 20 |tion of service |
00000120 63 61 6c 6c 20 26 46 45 20 61 6e 64 20 69 74 20 |call &FE and it |
00000130 69 73 20 6e 6f 74 20 66 75 6c 6c 79 0d 63 6f 6d |is not fully.com|
00000140 70 61 74 69 62 6c 65 20 77 69 74 68 20 61 20 36 |patible with a 6|
00000150 35 30 32 20 73 65 63 6f 6e 64 20 70 72 6f 63 65 |502 second proce|
00000160 73 73 6f 72 2e 20 49 6e 20 73 70 69 74 65 20 6f |ssor. In spite o|
00000170 66 20 74 68 69 73 20 69 74 20 63 61 6e 20 62 65 |f this it can be|
00000180 0d 71 75 69 74 65 20 61 20 75 73 65 66 75 6c 20 |.quite a useful |
00000190 6d 6f 64 69 66 69 63 61 74 69 6f 6e 20 74 6f 20 |modification to |
000001a0 6d 61 6b 65 20 74 6f 20 74 68 65 20 52 46 53 20 |make to the RFS |
000001b0 73 65 72 76 69 63 65 20 63 61 6c 6c 0d 69 6e 74 |service call.int|
000001c0 65 72 70 72 65 74 65 72 20 66 6f 72 20 73 6f 66 |erpreter for sof|
000001d0 74 77 61 72 65 20 73 74 6f 72 65 64 20 69 6e 20 |tware stored in |
000001e0 72 6f 6d 20 63 61 72 74 72 69 64 67 65 73 2e 20 |rom cartridges. |
000001f0 41 20 72 6f 6d 20 63 61 72 74 72 69 64 67 65 0d |A rom cartridge.|
00000200 66 6f 72 6d 61 74 74 65 64 20 77 69 74 68 20 74 |formatted with t|
00000210 68 65 20 70 72 6f 67 72 61 6d 20 41 55 54 4f 52 |he program AUTOR|
00000220 46 53 20 77 69 6c 6c 20 61 6c 77 61 79 73 20 62 |FS will always b|
00000230 6f 6f 74 20 69 74 73 65 6c 66 20 77 68 65 6e 20 |oot itself when |
00000240 74 68 65 0d 42 72 65 61 6b 20 6b 65 79 20 69 73 |the.Break key is|
00000250 20 70 72 65 73 73 65 64 2e 0d 0d 20 20 4c 61 6e | pressed... Lan|
00000260 67 75 61 67 65 20 72 6f 6d 73 20 69 6e 20 6c 6f |guage roms in lo|
00000270 77 20 70 72 69 6f 72 69 74 79 20 73 6f 63 6b 65 |w priority socke|
00000280 74 73 20 61 72 65 20 75 73 75 61 6c 6c 79 20 65 |ts are usually e|
00000290 6e 74 65 72 65 64 20 62 79 20 74 79 70 69 6e 67 |ntered by typing|
000002a0 0d 61 20 2a 20 63 6f 6d 6d 61 6e 64 20 77 68 69 |.a * command whi|
000002b0 63 68 20 69 73 20 63 6f 6d 70 61 72 65 64 20 77 |ch is compared w|
000002c0 69 74 68 20 74 68 65 20 72 6f 6d 27 73 20 74 69 |ith the rom's ti|
000002d0 74 6c 65 20 73 74 72 69 6e 67 20 61 6e 64 20 74 |tle string and t|
000002e0 68 65 20 72 6f 6d 0d 69 73 20 73 65 6c 65 63 74 |he rom.is select|
000002f0 65 64 20 77 69 74 68 20 4f 73 62 79 74 65 20 26 |ed with Osbyte &|
00000300 38 45 20 77 68 65 6e 20 61 20 6d 61 74 63 68 20 |8E when a match |
00000310 69 73 20 66 6f 75 6e 64 20 28 73 65 65 20 4d 6f |is found (see Mo|
00000320 64 75 6c 65 20 31 37 29 2e 20 54 68 65 0d 73 65 |dule 17). The.se|
00000330 72 76 69 63 65 20 63 61 6c 6c 20 69 6e 74 65 72 |rvice call inter|
00000340 70 72 65 74 65 72 20 69 6e 20 74 68 65 20 70 72 |preter in the pr|
00000350 6f 67 72 61 6d 20 41 55 54 4f 52 46 53 20 64 6f |ogram AUTORFS do|
00000360 65 73 20 6e 6f 74 20 69 6e 74 65 72 63 65 70 74 |es not intercept|
00000370 0d 73 65 72 76 69 63 65 20 63 61 6c 6c 20 34 20 |.service call 4 |
00000380 74 6f 20 73 65 6c 65 63 74 20 74 68 65 20 6c 61 |to select the la|
00000390 6e 67 75 61 67 65 20 69 6e 20 74 68 69 73 20 77 |nguage in this w|
000003a0 61 79 2e 20 49 6e 73 74 65 61 64 20 69 74 0d 69 |ay. Instead it.i|
000003b0 6e 74 65 72 63 65 70 74 73 20 73 65 72 76 69 63 |ntercepts servic|
000003c0 65 20 63 61 6c 6c 20 26 46 45 20 61 73 20 73 68 |e call &FE as sh|
000003d0 6f 77 6e 20 69 6e 20 66 69 67 75 72 65 20 32 32 |own in figure 22|
000003e0 2e 31 2e 20 49 66 20 79 6f 75 20 68 61 76 65 20 |.1. If you have |
000003f0 62 65 65 6e 0d 66 6f 6c 6c 6f 77 69 6e 67 20 74 |been.following t|
00000400 68 65 20 63 6f 75 72 73 65 20 79 6f 75 20 77 69 |he course you wi|
00000410 6c 6c 20 6b 6e 6f 77 20 74 68 61 74 20 73 65 72 |ll know that ser|
00000420 76 69 63 65 20 63 61 6c 6c 20 26 46 45 20 69 73 |vice call &FE is|
00000430 20 69 73 73 75 65 64 20 62 79 0d 74 68 65 20 4d | issued by.the M|
00000440 4f 53 20 6f 6e 20 62 6f 74 68 20 68 61 72 64 20 |OS on both hard |
00000450 61 6e 64 20 73 6f 66 74 20 72 65 73 65 74 20 61 |and soft reset a|
00000460 6e 64 20 63 61 6e 20 62 65 20 69 6e 74 65 72 63 |nd can be interc|
00000470 65 70 74 65 64 20 66 6f 72 20 69 6c 6c 65 67 61 |epted for illega|
00000480 6c 0d 70 75 72 70 6f 73 65 73 20 61 73 20 6c 6f |l.purposes as lo|
00000490 6e 67 20 61 73 20 74 68 65 20 72 65 67 69 73 74 |ng as the regist|
000004a0 65 72 73 20 61 72 65 20 72 65 73 74 6f 72 65 64 |ers are restored|
000004b0 20 61 66 74 65 72 20 74 68 65 20 69 6c 6c 65 67 | after the illeg|
000004c0 61 6c 0d 61 63 74 69 76 69 74 79 20 28 73 65 65 |al.activity (see|
000004d0 20 6d 6f 64 75 6c 65 20 31 32 29 2e 0d 0d 0d 0d | module 12).....|
000004e0 0d 20 2e 73 65 72 76 69 63 65 0d 20 20 20 20 20 |. .service. |
000004f0 20 20 20 20 50 48 41 20 20 20 20 20 20 20 20 20 | PHA |
00000500 20 20 20 20 20 5c 20 73 74 6f 72 65 20 61 63 63 | \ store acc|
00000510 75 6d 75 6c 61 74 6f 72 0d 20 20 20 20 20 20 20 |umulator. |
00000520 20 20 43 4d 50 20 23 26 46 45 20 20 20 20 20 20 | CMP #&FE |
00000530 20 20 20 5c 20 69 73 20 74 68 69 73 20 73 65 72 | \ is this ser|
00000540 76 69 63 65 20 63 61 6c 6c 20 26 46 45 3f 0d 20 |vice call &FE?. |
00000550 20 20 20 20 20 20 20 20 42 4e 45 20 74 72 79 74 | BNE tryt|
00000560 68 69 72 74 65 65 6e 20 20 5c 20 69 66 20 6e 6f |hirteen \ if no|
00000570 74 20 62 72 61 6e 63 68 20 74 6f 20 52 46 53 20 |t branch to RFS |
00000580 69 6e 74 65 72 70 72 65 74 65 72 0d 20 20 20 20 |interpreter. |
00000590 20 20 20 20 20 54 58 41 0d 20 20 20 20 20 20 20 | TXA. |
000005a0 20 20 50 48 41 20 20 20 20 20 20 20 20 20 20 20 | PHA |
000005b0 20 20 20 5c 20 73 74 6f 72 65 20 58 0d 20 20 20 | \ store X. |
000005c0 20 20 20 20 20 20 54 59 41 0d 20 20 20 20 20 20 | TYA. |
000005d0 20 20 20 50 48 41 20 20 20 20 20 20 20 20 20 20 | PHA |
000005e0 20 20 20 20 5c 20 73 74 6f 72 65 20 59 0d 20 20 | \ store Y. |
000005f0 20 20 20 20 20 20 20 4c 44 41 20 23 26 46 43 20 | LDA #&FC |
00000600 20 20 20 20 20 20 20 20 5c 20 4f 73 62 79 74 65 | \ Osbyte|
00000610 20 26 46 43 0d 20 20 20 20 20 20 20 20 20 4c 44 | &FC. LD|
00000620 58 20 26 46 34 20 20 20 20 20 20 20 20 20 20 5c |X &F4 \|
00000630 20 6c 6f 61 64 20 58 20 77 69 74 68 20 74 68 69 | load X with thi|
00000640 73 20 72 6f 6d 20 6e 75 6d 62 65 72 0d 20 20 20 |s rom number. |
00000650 20 20 20 20 20 20 4c 44 59 20 23 30 20 20 20 20 | LDY #0 |
00000660 20 20 20 20 20 20 20 5c 20 61 6e 64 20 6d 61 6b | \ and mak|
00000670 65 20 74 68 69 73 20 72 6f 6d 20 6e 75 6d 62 65 |e this rom numbe|
00000680 72 0d 20 20 20 20 20 20 20 20 20 4a 53 52 20 26 |r. JSR &|
00000690 46 46 46 34 20 20 20 20 20 20 20 20 5c 20 74 68 |FFF4 \ th|
000006a0 65 20 63 75 72 72 65 6e 74 20 6c 61 6e 67 75 61 |e current langua|
000006b0 67 65 20 61 66 74 65 72 20 72 65 73 65 74 0d 20 |ge after reset. |
000006c0 20 20 20 20 20 20 20 20 50 4c 41 20 20 20 20 20 | PLA |
000006d0 20 20 20 20 20 20 20 20 20 5c 20 70 75 6c 6c 20 | \ pull |
000006e0 59 0d 20 20 20 20 20 20 20 20 20 54 41 59 20 20 |Y. TAY |
000006f0 20 20 20 20 20 20 20 20 20 20 20 20 5c 20 72 65 | \ re|
00000700 73 74 6f 72 65 20 59 0d 20 20 20 20 20 20 20 20 |store Y. |
00000710 20 50 4c 41 20 20 20 20 20 20 20 20 20 20 20 20 | PLA |
00000720 20 20 5c 20 70 75 6c 6c 20 58 0d 20 20 20 20 20 | \ pull X. |
00000730 20 20 20 20 54 41 58 20 20 20 20 20 20 20 20 20 | TAX |
00000740 20 20 20 20 20 5c 20 72 65 73 74 6f 72 65 20 58 | \ restore X|
00000750 0d 20 20 20 20 20 20 20 20 20 50 4c 41 20 20 20 |. PLA |
00000760 20 20 20 20 20 20 20 20 20 20 20 5c 20 72 65 74 | \ ret|
00000770 6f 72 65 20 41 0d 20 20 20 20 20 20 20 20 20 52 |ore A. R|
00000780 54 53 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |TS |
00000790 5c 20 61 6e 64 20 72 65 74 75 72 6e 0d 2e 74 72 |\ and return..tr|
000007a0 79 74 68 69 72 74 65 65 6e 0d 0d 46 69 67 75 72 |ythirteen..Figur|
000007b0 65 20 32 32 2e 31 20 20 49 6e 74 65 72 63 65 70 |e 22.1 Intercep|
000007c0 74 69 6e 67 20 73 65 72 76 69 63 65 20 63 61 6c |ting service cal|
000007d0 6c 20 26 46 45 2e 0d 2d 2d 2d 2d 2d 2d 2d 2d 2d |l &FE..---------|
000007e0 2d 2d 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |-- ------------|
000007f0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00000800 2d 2d 0d 0d 0d 0d 0d 20 20 54 68 65 20 72 6f 6d |--..... The rom|
00000810 20 69 6e 74 65 72 70 72 65 74 65 72 20 69 6e 74 | interpreter int|
00000820 65 72 63 65 70 74 73 20 73 65 72 76 69 63 65 20 |ercepts service |
00000830 63 61 6c 6c 20 26 46 45 20 61 6e 64 20 75 73 65 |call &FE and use|
00000840 73 20 4f 73 62 79 74 65 20 26 46 43 0d 74 6f 20 |s Osbyte &FC.to |
00000850 77 72 69 74 65 20 74 68 65 20 6e 75 6d 62 65 72 |write the number|
00000860 20 6f 66 20 74 68 65 20 72 6f 6d 20 74 6f 20 62 | of the rom to b|
00000870 65 20 65 6e 74 65 72 65 64 20 66 6f 6c 6c 6f 77 |e entered follow|
00000880 69 6e 67 20 61 20 73 6f 66 74 20 72 65 73 65 74 |ing a soft reset|
00000890 0d 28 42 72 65 61 6b 29 2e 20 55 73 69 6e 67 20 |.(Break). Using |
000008a0 4f 73 62 79 74 65 20 26 46 43 20 69 6e 20 74 68 |Osbyte &FC in th|
000008b0 69 73 20 77 61 79 20 73 74 6f 72 65 73 20 74 68 |is way stores th|
000008c0 65 20 6e 75 6d 62 65 72 20 6f 66 20 74 68 65 20 |e number of the |
000008d0 72 6f 6d 0d 63 61 72 74 72 69 64 67 65 20 69 6e |rom.cartridge in|
000008e0 20 6c 6f 63 61 74 69 6f 6e 20 26 32 38 43 2e 20 | location &28C. |
000008f0 54 68 65 20 72 6f 6d 20 77 68 6f 73 65 20 6e 75 |The rom whose nu|
00000900 6d 62 65 72 20 69 73 20 73 74 6f 72 65 64 20 69 |mber is stored i|
00000910 6e 20 74 68 69 73 0d 6c 6f 63 61 74 69 6f 6e 20 |n this.location |
00000920 69 73 20 65 6e 74 65 72 65 64 20 66 6f 6c 6c 6f |is entered follo|
00000930 77 69 6e 67 20 61 20 73 6f 66 74 20 72 65 73 65 |wing a soft rese|
00000940 74 20 6f 72 20 61 20 42 52 4b 20 28 65 72 72 6f |t or a BRK (erro|
00000950 72 29 2e 20 54 68 65 20 52 46 53 0d 72 6f 6d 20 |r). The RFS.rom |
00000960 63 61 72 74 72 69 64 67 65 20 77 69 6c 6c 20 62 |cartridge will b|
00000970 65 20 65 6e 74 65 72 65 64 20 61 66 74 65 72 20 |e entered after |
00000980 70 72 65 73 73 69 6e 67 20 74 68 65 20 42 72 65 |pressing the Bre|
00000990 61 6b 20 6b 65 79 20 61 73 20 6c 6f 6e 67 20 61 |ak key as long a|
000009a0 73 0d 42 41 53 49 43 20 69 73 20 74 68 65 20 68 |s.BASIC is the h|
000009b0 69 67 68 65 73 74 20 70 72 69 6f 72 69 74 79 20 |ighest priority |
000009c0 6c 61 6e 67 75 61 67 65 2e 20 57 68 65 6e 20 79 |language. When y|
000009d0 6f 75 20 77 72 69 74 65 20 70 72 6f 67 72 61 6d |ou write program|
000009e0 73 20 74 6f 20 62 65 0d 73 74 6f 72 65 64 20 69 |s to be.stored i|
000009f0 6e 20 52 46 53 20 72 6f 6d 20 63 61 72 74 72 69 |n RFS rom cartri|
00000a00 64 67 65 73 20 74 68 65 72 65 20 69 73 20 6e 6f |dges there is no|
00000a10 20 6e 65 65 64 20 74 6f 20 74 72 61 70 20 74 68 | need to trap th|
00000a20 65 20 42 72 65 61 6b 20 6b 65 79 0d 62 65 63 61 |e Break key.beca|
00000a30 75 73 65 20 41 55 54 4f 52 46 53 20 77 69 6c 6c |use AUTORFS will|
00000a40 20 64 6f 20 74 68 69 73 20 66 6f 72 20 79 6f 75 | do this for you|
00000a50 2e 0d 0d 20 20 49 66 20 74 68 65 20 41 55 54 4f |... If the AUTO|
00000a60 52 46 53 20 72 6f 6d 20 69 6d 61 67 65 20 69 73 |RFS rom image is|
00000a70 20 69 6e 73 74 61 6c 6c 65 64 20 69 6e 20 73 6f | installed in so|
00000a80 63 6b 65 74 20 26 30 46 20 61 6e 64 20 74 68 65 |cket &0F and the|
00000a90 20 70 72 6f 67 72 61 6d 73 0d 73 74 6f 72 65 64 | programs.stored|
00000aa0 20 69 6e 20 74 68 65 20 52 46 53 20 64 69 73 61 | in the RFS disa|
00000ab0 62 6c 65 20 74 68 65 20 45 73 63 61 70 65 20 6b |ble the Escape k|
00000ac0 65 79 20 74 68 65 6e 20 69 74 20 69 73 20 64 69 |ey then it is di|
00000ad0 66 66 69 63 75 6c 74 20 74 6f 20 73 74 6f 70 0d |fficult to stop.|
00000ae0 74 68 65 20 73 6f 66 74 77 61 72 65 20 72 75 6e |the software run|
00000af0 6e 69 6e 67 2e 20 50 72 65 73 73 69 6e 67 20 42 |ning. Pressing B|
00000b00 72 65 61 6b 2c 20 43 74 72 6c 2b 42 72 65 61 6b |reak, Ctrl+Break|
00000b10 20 61 6e 64 20 53 68 69 66 74 2b 42 72 65 61 6b | and Shift+Break|
00000b20 20 77 69 6c 6c 0d 61 6c 6c 20 62 6f 6f 74 20 74 | will.all boot t|
00000b30 68 65 20 52 46 53 20 73 6f 66 74 77 61 72 65 2e |he RFS software.|
00000b40 20 53 68 69 66 74 2b 42 72 65 61 6b 20 77 69 6c | Shift+Break wil|
00000b50 6c 20 61 74 74 65 6d 70 74 20 74 6f 20 62 6f 6f |l attempt to boo|
00000b60 74 20 61 20 64 69 73 63 20 62 75 74 0d 74 68 65 |t a disc but.the|
00000b70 20 72 6f 6d 20 77 69 6c 6c 20 73 74 69 6c 6c 20 | rom will still |
00000b80 62 6f 6f 74 20 61 66 74 65 72 77 61 72 64 73 2e |boot afterwards.|
00000b90 20 53 6f 66 74 77 61 72 65 20 66 6f 72 6d 61 74 | Software format|
00000ba0 74 65 64 20 69 6e 20 74 68 69 73 20 77 61 79 20 |ted in this way |
00000bb0 63 61 6e 0d 62 65 20 70 65 72 6d 61 6e 65 6e 74 |can.be permanent|
00000bc0 6c 79 20 69 6e 73 74 61 6c 6c 65 64 20 69 6e 20 |ly installed in |
00000bd0 73 6f 63 6b 65 74 20 26 30 46 20 6f 66 20 61 20 |socket &0F of a |
00000be0 63 6f 6d 70 75 74 65 72 20 77 68 69 63 68 20 69 |computer which i|
00000bf0 73 0d 64 65 64 69 63 61 74 65 64 20 74 6f 20 61 |s.dedicated to a|
00000c00 20 77 65 6c 6c 20 64 65 66 69 6e 65 64 20 74 61 | well defined ta|
00000c10 73 6b 20 73 75 63 68 20 61 73 20 63 6f 6e 74 72 |sk such as contr|
00000c20 6f 6c 69 6e 67 20 6c 61 62 6f 72 61 74 6f 72 79 |oling laboratory|
00000c30 0d 65 71 75 69 70 6d 65 6e 74 2e 20 49 6e 73 74 |.equipment. Inst|
00000c40 61 6c 6c 69 6e 67 20 74 68 65 20 73 6f 66 74 77 |alling the softw|
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00000e10 45 4d 4f 2e 20 49 66 20 79 6f 75 20 77 61 6e 74 |EMO. If you want|
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00000e30 61 6e 79 20 6f 74 68 65 72 20 70 72 6f 67 72 61 |any other progra|
00000e40 6d 20 79 6f 75 20 77 69 6c 6c 20 6e 65 65 64 20 |m you will need |
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00001850 58 20 23 30 0d 20 31 30 36 30 20 20 20 20 20 20 |X #0. 1060 |
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00001870 30 37 30 20 20 20 20 20 20 20 20 20 4a 4d 50 20 |070 JMP |
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00001890 30 38 30 20 2e 62 61 73 69 63 0d 20 31 30 39 30 |080 .basic. 1090|
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00001900 20 42 41 53 49 43 0d 20 31 31 33 30 20 20 20 20 | BASIC. 1130 |
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00001920 31 34 30 20 20 20 20 20 20 20 20 20 4a 4d 50 20 |140 JMP |
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00001950 66 73 63 6f 6d 6d 0d 20 31 31 36 30 20 20 20 20 |fscomm. 1160 |
00001960 20 20 20 20 20 4f 50 54 20 46 4e 65 71 75 73 28 | OPT FNequs(|
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000019c0 0d 20 31 32 30 30 20 5d 0d 20 31 32 31 30 20 4e |. 1200 ]. 1210 N|
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00001a00 44 45 46 46 4e 65 71 75 62 28 62 79 74 65 29 0d |DEFFNequb(byte).|
00001a10 20 31 32 35 30 20 3f 50 25 3d 62 79 74 65 0d 20 | 1250 ?P%=byte. |
00001a20 31 32 36 30 20 50 25 3d 50 25 2b 31 0d 20 31 32 |1260 P%=P%+1. 12|
00001a30 37 30 20 3d 70 61 73 73 0d 20 31 32 38 30 20 44 |70 =pass. 1280 D|
00001a40 45 46 46 4e 65 71 75 77 28 77 6f 72 64 29 0d 20 |EFFNequw(word). |
00001a50 31 32 39 30 20 3f 50 25 3d 77 6f 72 64 20 4d 4f |1290 ?P%=word MO|
00001a60 44 20 32 35 36 0d 20 31 33 30 30 20 50 25 3f 31 |D 256. 1300 P%?1|
00001a70 3d 77 6f 72 64 20 44 49 56 20 32 35 36 0d 20 31 |=word DIV 256. 1|
00001a80 33 31 30 20 50 25 3d 50 25 2b 32 0d 20 31 33 32 |310 P%=P%+2. 132|
00001a90 30 20 3d 70 61 73 73 0d 20 31 33 33 30 20 44 45 |0 =pass. 1330 DE|
00001aa0 46 46 4e 65 71 75 64 28 64 6f 75 62 6c 65 29 0d |FFNequd(double).|
00001ab0 20 31 33 34 30 20 21 50 25 3d 64 6f 75 62 6c 65 | 1340 !P%=double|
00001ac0 0d 20 31 33 35 30 20 50 25 3d 50 25 2b 34 0d 20 |. 1350 P%=P%+4. |
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00001b00 72 69 6e 67 24 0d 20 31 33 39 30 20 50 25 3d 50 |ring$. 1390 P%=P|
00001b10 25 2b 4c 45 4e 28 73 74 72 69 6e 67 24 29 0d 20 |%+LEN(string$). |
00001b20 31 34 30 30 20 3d 70 61 73 73 0d |1400 =pass.|
00001b2b 
02-12-88/T\SWR22.m0
02-12-88/T\SWR22.m1
02-12-88/T\SWR22.m2
02-12-88/T\SWR22.m4
02-12-88/T\SWR22.m5
.