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02-12-88/T\MOU02
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\MOU02 |
| Read OK: | ✔ |
| File size: | 275F bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Using a mouse with the BBC microcomputer - by - Gordon Horsington
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Module 2. Tube compatible mouse software
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Interrupts generated by I/O processor hardware are not passed to a second
processor. The IRQ1V and IRQ2V vectors are not implemented by the second
processor operating system. For this reason interrupts generated by a
mouse connected to the User Port must be dealt with by software in the I/O
processor.
It is quite straightforward to assemble code in the second processor and
use Osword &06 to transfer the code from the second processor to the I/O
processor. The real problem is to change the I/O processor primary
interrupt vector from a second processor. An interrupt vector should only
be altered with interrupts disabled but it is not possible to disable the
I/O processor interrupts from the second processor.
One way of overcoming this problem is to use either *CODE or *LINE to
alter the vector for you. Both *CODE and *LINE use the User Vector and
this vector can be altered with the I/O processor interrupts enabled. The
program SPMOUSE alters the User Vector and then uses *CODE to disable the
I/O processor interrupts, alter IRQ1V, and then re-enable the I/O
processor interrupts. An alternative method is available to disc users who
can assemble the I/O processor routine in the second processor, save it
onto disc and then *RUN it from disc in the I/O processor. This would be
far too inconvenient to do with a tape storage system.
The demonstration program SPMOUSE is assembled with the program counter
starting at &A00, the destination address for the I/O processor machine
code. After assembly the proceedure PROCwrite is used to transfer every
byte of the assembled machine code into page &0A of the I/O processor. It
is also used to revector the User Vector to point to &A00. The command
*CODE will then revector IRQ1V to point to the code labeled interrupt,
which is now in the I/O processor.
After IRQ1V has been revectored to the new I/O processor routine, the
mouse generated interrupts can be dealt with in the I/O processor in
exactly the same way as illustrated in module 1 and the result can be read
at any time by the second processor using Osword &05 (or simply peeked if
the second processor is not being used).
Osword &05 is implemented in the function FNread. This function reads a
byte of I/O processor memory and can be used from either the second
processor or the I/O processor. It is, however, very slow when compared
with using the BASIC indirection operators and, if the program using the
mouse is running in the I/O processor, it is far quicker to peek and poke
the memory locations directly than to use Osword &05.
Chain the program SPMOUSE which can be used with either a 6502 second
processor or with the I/O processor on its own. The mouse buttons are
polled using Osbyte &96 to read a byte in Sheila. This routine is Tube
compatible and faster than Osword &05. Osbytes &92 to &97 can be used to
read or write to memory mapped I/O hardware and are all much quicker than
using either Osword &05 or Osword &06 in this area of memory.
10 REM> SPMOUSE
20 DIM param &10 :REM: Osword parameter block
30 DIM mcode &100 :REM: assemble at mcode
40 ioaddr=&A00 :REM: address for machine code
50 xcoord=&80 :REM: x coordinate, range 0-255
60 ycoord=&81 :REM: y coordinate, range 0-255
70 savereg=&FC :REM: interrupt accumulator save register
80 userv=&200 :REM: user vector
90 irq1v=&204 :REM: primary interrupt vector
100 drb=&FE60 :REM: data register B
110 ddrb=&FE62 :REM: data direction register B
120 pcr=&FE6C :REM: peripheral control register
130 ifr=&FE6D :REM: interrupt flag register
140 ier=&FE6E :REM: interrupt enable register
150 osword=&FFF1
160 osbyte=&FFF4
170 FOR pass=4 TO 6 STEP 2
180 O%=mcode
190 P%=ioaddr
200 [ OPT pass
210 CMP #&00 \ is this *CODE?
220 BNE return \ return if not *CODE
230 LDX irq1v \ current primary interrupt vector, low byte
240 LDY irq1v+1 \ current primary interrupt vector, high byte
250 CPY #interrupt DIV 256 \ compare high byte
260 BEQ disable \ restore old vector if altered
270 STX oldirq1v \ save original irq1 vector, low byte
280 STY oldirq1v+1 \ save original irq1 vector, high byte
290 LDX #interrupt MOD 256 \ new irq1 vector, low byte
300 LDY #interrupt DIV 256 \ new irq1 vector, high byte
310 SEI \ set interrupt disable flag
320 STX irq1v \ alter irq1 vector, low byte
330 STY irq1v+1 \ alter irq1 vector, high byte
340 CLI \ clear interrupt disable flag
350 LDA #&98 \ %10011000, ie. enable CB1/2
360 STA ier \ interrupt enable register
370 LDA pcr \ peripheral control register
380 AND #&0F \ AND with %00001111, ie clear bits 4-7
390 ORA #&50 \ OR with %01010000, ie. set bits 4 and 6
400 STA pcr \ interrupt on +ve transition, CB2 input,
\ DRB to clear
410 LDA #0 \ user port input
420 STA ddrb \ data direction register B
430 STA xcoord \ initial value for x coordinate
440 STA ycoord \ initial value for y coordinate
450 .return
460 RTS \ return to BASIC
470 .disable
480 LDA #&18 \ %00011000 ready to clear bits 3 and 4 of ier
490 LDX oldirq1v \ original irq1 vector, low byte
500 LDY oldirq1v+1 \ original irq1 vector, high byte
510 SEI \ set interrupt disable flag
520 STA ier \ interrupt enable register
530 LDA pcr \ peripheral control register
540 AND #&0F \ clear bits 4-7
550 STA pcr \ peripheral control register
560 STX irq1v \ restore the original irq1 vector, low byte
570 STY irq1v+1 \ restore the original irq1 vector, high byte
580 CLI \ clear interrupt disable flag
590 RTS \ return to BASIC
600 .interrupt
610 LDA savereg \ interrupt accumulator save register
620 PHA \ and push it on the stack
630 LDA ifr \ interrupt flag register
640 BPL notuser \ bit 7 is set if VIA-B interrupt
650 AND #&18 \ AND with %00011000, ie. test bits 3 and 4
660 BEQ notuser \ exit if not CB1 or CB2
670 AND #&10 \ AND with %00010000, ie. test bit 4
680 BNE xpulse \ bit 4 set for an X direction movement
690 LDA drb \ Y direction, load data register B
700 AND #&04 \ AND with %00000100, ie. test bit 2
710 BNE ydown \ if bit 2 is set then Y is going down
720 INC ycoord \ Y is going up so increment Y coordinate
730 BNE exit \ branch if in the range 1 to 255
740 BEQ decy \ if zero then alter to 255
750 .ydown
760 LDA ycoord \ load Y coordinate
770 BEQ exit \ branch if zero because it can't go any lower
780 .decy
790 DEC ycoord \ reduce Y coordinate by 1
800 JMP exit \ restore interrupt accumulator save register
\ and RTI
810 .xpulse
820 LDA drb \ load data register B
830 ROR A \ bit 0 into carry
840 BCS xdown \ X is going down if bit 0 is set
850 INC xcoord \ X is going up if bit 0 is clear
860 BNE exit \ exit if X coordinate is in the range
\ from 1 to 255
870 BEQ decx \ if X coordinate = 0 then make it 255
880 .xdown
890 LDA xcoord \ load X coordinate
900 BEQ exit \ if it is zero it can't go any lower
910 .decx
920 DEC xcoord \ decrease X coordinate by 1
930 .exit
940 PLA \ pull interrupt accumulator save register off
\ the stack
950 STA savereg \ and restore zero page
960 RTI \ return from interrupt
970 .notuser
980 PLA \ pull the interrupt accumulator save register
\ off the stack
990 STA savereg \ restore the zero page address
1000 JMP (oldirq1v) \ exit via the original vector
1010 .oldirq1v
1020 EQUW &00 \ original irq1 vector
1030 .lastbyte
1040 ]
1050 NEXT
1060 end=mcode+(lastbyte-ioaddr)
1070 addr=ioaddr
1080 FOR byte=mcode TO end
1090 PROCwrite(?byte,addr)
1100 addr=addr+1
1110 NEXT
1120 PROCwrite((ioaddr MOD 256),userv)
1130 PROCwrite((ioaddr DIV 256),userv+1)
1140 *CODE
1150 MODE7
1160 mouse$=CHR$141+CHR$132+CHR$157+CHR$131+
"Mouse coordinates, range &00-&FF "+CHR$156
1170 PRINTTAB(0,1)mouse$
1180 PRINTTAB(0,2)mouse$
1190 ONERROR GOTO 1290
1200 VDU23,1,0;0;0;0;
1210 PRINTTAB(10,7)"Bytes used = &";~(lastbyte-ioaddr)
1220 REPEAT
1230 PRINTTAB(10,12)"X = &";~FNread(&80);" "
1240 PRINTTAB(20,12)"Y = &";~FNread(&81);" "
1250 IF FNright PRINTTAB(22,17)"Right" ELSE PRINTTAB(22,17)" "
1260 IF FNcentre PRINTTAB(15,17)"Centre" ELSE PRINTTAB(15,17)" "
1270 IF FNleft PRINTTAB(10,17)"Left" ELSE PRINTTAB(10,17)" "
1280 UNTIL FALSE
1290 *CODE
1300 VDU23,1,1;0;0;0;31,0,23
1310 END
1320 DEFPROCwrite(data,addr)
1330 !param=addr OR &FFFF0000
1340 param?4=data
1350 A%=6
1360 X%=param MOD 256
1370 Y%=param DIV 256
1380 CALL osword
1390 ENDPROC
1400 DEFFNread(addr)
1410 !param=addr OR &FFFF0000
1420 A%=5
1430 X%=param MOD 256
1440 Y%=param DIV 256
1450 CALL osword
1460 =param?4
1470 DEFFNbutton
1480 A%=&96
1490 X%=&60
1500 =(USR(osbyte) AND &FF0000)DIV&10000
1510 DEFFNright
1520 =((FNbutton AND &80)=0)
1530 DEFFNcentre
1540 =((FNbutton AND &40)=0)
1550 DEFFNleft
1560 =((FNbutton AND &20)=0)
00000000 55 73 69 6e 67 20 61 20 6d 6f 75 73 65 20 77 69 |Using a mouse wi| 00000010 74 68 20 74 68 65 20 42 42 43 20 6d 69 63 72 6f |th the BBC micro| 00000020 63 6f 6d 70 75 74 65 72 20 2d 20 62 79 20 2d 20 |computer - by - | 00000030 47 6f 72 64 6f 6e 20 48 6f 72 73 69 6e 67 74 6f |Gordon Horsingto| 00000040 6e 0d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |n.--------------| 00000050 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 00000080 2d 2d 2d 0d 0d 4d 6f 64 75 6c 65 20 32 2e 20 54 |---..Module 2. T| 00000090 75 62 65 20 63 6f 6d 70 61 74 69 62 6c 65 20 6d |ube compatible m| 000000a0 6f 75 73 65 20 73 6f 66 74 77 61 72 65 0d 2d 2d |ouse software.--| 000000b0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 000000d0 2d 2d 2d 2d 2d 2d 0d 0d 49 6e 74 65 72 72 75 70 |------..Interrup| 000000e0 74 73 20 67 65 6e 65 72 61 74 65 64 20 62 79 20 |ts generated by | 000000f0 49 2f 4f 20 70 72 6f 63 65 73 73 6f 72 20 68 61 |I/O processor ha| 00000100 72 64 77 61 72 65 20 61 72 65 20 6e 6f 74 20 70 |rdware are not p| 00000110 61 73 73 65 64 20 74 6f 20 61 20 73 65 63 6f 6e |assed to a secon| 00000120 64 0d 70 72 6f 63 65 73 73 6f 72 2e 20 54 68 65 |d.processor. The| 00000130 20 49 52 51 31 56 20 61 6e 64 20 49 52 51 32 56 | IRQ1V and IRQ2V| 00000140 20 76 65 63 74 6f 72 73 20 61 72 65 20 6e 6f 74 | vectors are not| 00000150 20 69 6d 70 6c 65 6d 65 6e 74 65 64 20 62 79 20 | implemented by | 00000160 74 68 65 20 73 65 63 6f 6e 64 0d 70 72 6f 63 65 |the second.proce| 00000170 73 73 6f 72 20 6f 70 65 72 61 74 69 6e 67 20 73 |ssor operating s| 00000180 79 73 74 65 6d 2e 20 46 6f 72 20 74 68 69 73 20 |ystem. For this | 00000190 72 65 61 73 6f 6e 20 69 6e 74 65 72 72 75 70 74 |reason interrupt| 000001a0 73 20 67 65 6e 65 72 61 74 65 64 20 62 79 20 61 |s generated by a| 000001b0 0d 6d 6f 75 73 65 20 63 6f 6e 6e 65 63 74 65 64 |.mouse connected| 000001c0 20 74 6f 20 74 68 65 20 55 73 65 72 20 50 6f 72 | to the User Por| 000001d0 74 20 6d 75 73 74 20 62 65 20 64 65 61 6c 74 20 |t must be dealt | 000001e0 77 69 74 68 20 62 79 20 73 6f 66 74 77 61 72 65 |with by software| 000001f0 20 69 6e 20 74 68 65 20 49 2f 4f 0d 70 72 6f 63 | in the I/O.proc| 00000200 65 73 73 6f 72 2e 0d 0d 49 74 20 69 73 20 71 75 |essor...It is qu| 00000210 69 74 65 20 73 74 72 61 69 67 68 74 66 6f 72 77 |ite straightforw| 00000220 61 72 64 20 74 6f 20 61 73 73 65 6d 62 6c 65 20 |ard to assemble | 00000230 63 6f 64 65 20 69 6e 20 74 68 65 20 73 65 63 6f |code in the seco| 00000240 6e 64 20 70 72 6f 63 65 73 73 6f 72 20 61 6e 64 |nd processor and| 00000250 0d 75 73 65 20 4f 73 77 6f 72 64 20 26 30 36 20 |.use Osword &06 | 00000260 74 6f 20 74 72 61 6e 73 66 65 72 20 74 68 65 20 |to transfer the | 00000270 63 6f 64 65 20 66 72 6f 6d 20 74 68 65 20 73 65 |code from the se| 00000280 63 6f 6e 64 20 70 72 6f 63 65 73 73 6f 72 20 74 |cond processor t| 00000290 6f 20 74 68 65 20 49 2f 4f 0d 70 72 6f 63 65 73 |o the I/O.proces| 000002a0 73 6f 72 2e 20 54 68 65 20 72 65 61 6c 20 70 72 |sor. The real pr| 000002b0 6f 62 6c 65 6d 20 69 73 20 74 6f 20 63 68 61 6e |oblem is to chan| 000002c0 67 65 20 74 68 65 20 49 2f 4f 20 70 72 6f 63 65 |ge the I/O proce| 000002d0 73 73 6f 72 20 70 72 69 6d 61 72 79 0d 69 6e 74 |ssor primary.int| 000002e0 65 72 72 75 70 74 20 76 65 63 74 6f 72 20 66 72 |errupt vector fr| 000002f0 6f 6d 20 61 20 73 65 63 6f 6e 64 20 70 72 6f 63 |om a second proc| 00000300 65 73 73 6f 72 2e 20 41 6e 20 69 6e 74 65 72 72 |essor. An interr| 00000310 75 70 74 20 76 65 63 74 6f 72 20 73 68 6f 75 6c |upt vector shoul| 00000320 64 20 6f 6e 6c 79 0d 62 65 20 61 6c 74 65 72 65 |d only.be altere| 00000330 64 20 77 69 74 68 20 69 6e 74 65 72 72 75 70 74 |d with interrupt| 00000340 73 20 64 69 73 61 62 6c 65 64 20 62 75 74 20 69 |s disabled but i| 00000350 74 20 69 73 20 6e 6f 74 20 70 6f 73 73 69 62 6c |t is not possibl| 00000360 65 20 74 6f 20 64 69 73 61 62 6c 65 20 74 68 65 |e to disable the| 00000370 0d 49 2f 4f 20 70 72 6f 63 65 73 73 6f 72 20 69 |.I/O processor i| 00000380 6e 74 65 72 72 75 70 74 73 20 66 72 6f 6d 20 74 |nterrupts from t| 00000390 68 65 20 73 65 63 6f 6e 64 20 70 72 6f 63 65 73 |he second proces| 000003a0 73 6f 72 2e 0d 0d 4f 6e 65 20 77 61 79 20 6f 66 |sor...One way of| 000003b0 20 6f 76 65 72 63 6f 6d 69 6e 67 20 74 68 69 73 | overcoming this| 000003c0 20 70 72 6f 62 6c 65 6d 20 69 73 20 74 6f 20 75 | problem is to u| 000003d0 73 65 20 65 69 74 68 65 72 20 2a 43 4f 44 45 20 |se either *CODE | 000003e0 6f 72 20 2a 4c 49 4e 45 20 74 6f 0d 61 6c 74 65 |or *LINE to.alte| 000003f0 72 20 74 68 65 20 76 65 63 74 6f 72 20 66 6f 72 |r the vector for| 00000400 20 79 6f 75 2e 20 42 6f 74 68 20 2a 43 4f 44 45 | you. Both *CODE| 00000410 20 61 6e 64 20 2a 4c 49 4e 45 20 75 73 65 20 74 | and *LINE use t| 00000420 68 65 20 55 73 65 72 20 56 65 63 74 6f 72 20 61 |he User Vector a| 00000430 6e 64 0d 74 68 69 73 20 76 65 63 74 6f 72 20 63 |nd.this vector c| 00000440 61 6e 20 62 65 20 61 6c 74 65 72 65 64 20 77 69 |an be altered wi| 00000450 74 68 20 74 68 65 20 49 2f 4f 20 70 72 6f 63 65 |th the I/O proce| 00000460 73 73 6f 72 20 69 6e 74 65 72 72 75 70 74 73 20 |ssor interrupts | 00000470 65 6e 61 62 6c 65 64 2e 20 54 68 65 0d 70 72 6f |enabled. The.pro| 00000480 67 72 61 6d 20 53 50 4d 4f 55 53 45 20 61 6c 74 |gram SPMOUSE alt| 00000490 65 72 73 20 74 68 65 20 55 73 65 72 20 56 65 63 |ers the User Vec| 000004a0 74 6f 72 20 61 6e 64 20 74 68 65 6e 20 75 73 65 |tor and then use| 000004b0 73 20 2a 43 4f 44 45 20 74 6f 20 64 69 73 61 62 |s *CODE to disab| 000004c0 6c 65 20 74 68 65 0d 49 2f 4f 20 70 72 6f 63 65 |le the.I/O proce| 000004d0 73 73 6f 72 20 69 6e 74 65 72 72 75 70 74 73 2c |ssor interrupts,| 000004e0 20 61 6c 74 65 72 20 49 52 51 31 56 2c 20 61 6e | alter IRQ1V, an| 000004f0 64 20 74 68 65 6e 20 72 65 2d 65 6e 61 62 6c 65 |d then re-enable| 00000500 20 74 68 65 20 49 2f 4f 0d 70 72 6f 63 65 73 73 | the I/O.process| 00000510 6f 72 20 69 6e 74 65 72 72 75 70 74 73 2e 20 41 |or interrupts. A| 00000520 6e 20 61 6c 74 65 72 6e 61 74 69 76 65 20 6d 65 |n alternative me| 00000530 74 68 6f 64 20 69 73 20 61 76 61 69 6c 61 62 6c |thod is availabl| 00000540 65 20 74 6f 20 64 69 73 63 20 75 73 65 72 73 20 |e to disc users | 00000550 77 68 6f 0d 63 61 6e 20 61 73 73 65 6d 62 6c 65 |who.can assemble| 00000560 20 74 68 65 20 49 2f 4f 20 70 72 6f 63 65 73 73 | the I/O process| 00000570 6f 72 20 72 6f 75 74 69 6e 65 20 69 6e 20 74 68 |or routine in th| 00000580 65 20 73 65 63 6f 6e 64 20 70 72 6f 63 65 73 73 |e second process| 00000590 6f 72 2c 20 73 61 76 65 20 69 74 0d 6f 6e 74 6f |or, save it.onto| 000005a0 20 64 69 73 63 20 61 6e 64 20 74 68 65 6e 20 2a | disc and then *| 000005b0 52 55 4e 20 69 74 20 66 72 6f 6d 20 64 69 73 63 |RUN it from disc| 000005c0 20 69 6e 20 74 68 65 20 49 2f 4f 20 70 72 6f 63 | in the I/O proc| 000005d0 65 73 73 6f 72 2e 20 54 68 69 73 20 77 6f 75 6c |essor. This woul| 000005e0 64 20 62 65 0d 66 61 72 20 74 6f 6f 20 69 6e 63 |d be.far too inc| 000005f0 6f 6e 76 65 6e 69 65 6e 74 20 74 6f 20 64 6f 20 |onvenient to do | 00000600 77 69 74 68 20 61 20 74 61 70 65 20 73 74 6f 72 |with a tape stor| 00000610 61 67 65 20 73 79 73 74 65 6d 2e 0d 0d 54 68 65 |age system...The| 00000620 20 64 65 6d 6f 6e 73 74 72 61 74 69 6f 6e 20 70 | demonstration p| 00000630 72 6f 67 72 61 6d 20 53 50 4d 4f 55 53 45 20 69 |rogram SPMOUSE i| 00000640 73 20 61 73 73 65 6d 62 6c 65 64 20 77 69 74 68 |s assembled with| 00000650 20 74 68 65 20 70 72 6f 67 72 61 6d 20 63 6f 75 | the program cou| 00000660 6e 74 65 72 0d 73 74 61 72 74 69 6e 67 20 61 74 |nter.starting at| 00000670 20 26 41 30 30 2c 20 74 68 65 20 64 65 73 74 69 | &A00, the desti| 00000680 6e 61 74 69 6f 6e 20 61 64 64 72 65 73 73 20 66 |nation address f| 00000690 6f 72 20 74 68 65 20 49 2f 4f 20 70 72 6f 63 65 |or the I/O proce| 000006a0 73 73 6f 72 20 6d 61 63 68 69 6e 65 0d 63 6f 64 |ssor machine.cod| 000006b0 65 2e 20 41 66 74 65 72 20 61 73 73 65 6d 62 6c |e. After assembl| 000006c0 79 20 74 68 65 20 70 72 6f 63 65 65 64 75 72 65 |y the proceedure| 000006d0 20 50 52 4f 43 77 72 69 74 65 20 69 73 20 75 73 | PROCwrite is us| 000006e0 65 64 20 74 6f 20 74 72 61 6e 73 66 65 72 20 65 |ed to transfer e| 000006f0 76 65 72 79 0d 62 79 74 65 20 6f 66 20 74 68 65 |very.byte of the| 00000700 20 61 73 73 65 6d 62 6c 65 64 20 6d 61 63 68 69 | assembled machi| 00000710 6e 65 20 63 6f 64 65 20 69 6e 74 6f 20 70 61 67 |ne code into pag| 00000720 65 20 26 30 41 20 6f 66 20 74 68 65 20 49 2f 4f |e &0A of the I/O| 00000730 20 70 72 6f 63 65 73 73 6f 72 2e 20 49 74 0d 69 | processor. It.i| 00000740 73 20 61 6c 73 6f 20 75 73 65 64 20 74 6f 20 72 |s also used to r| 00000750 65 76 65 63 74 6f 72 20 74 68 65 20 55 73 65 72 |evector the User| 00000760 20 56 65 63 74 6f 72 20 74 6f 20 70 6f 69 6e 74 | Vector to point| 00000770 20 74 6f 20 26 41 30 30 2e 20 54 68 65 20 63 6f | to &A00. The co| 00000780 6d 6d 61 6e 64 0d 2a 43 4f 44 45 20 77 69 6c 6c |mmand.*CODE will| 00000790 20 74 68 65 6e 20 72 65 76 65 63 74 6f 72 20 49 | then revector I| 000007a0 52 51 31 56 20 74 6f 20 70 6f 69 6e 74 20 74 6f |RQ1V to point to| 000007b0 20 74 68 65 20 63 6f 64 65 20 6c 61 62 65 6c 65 | the code labele| 000007c0 64 20 69 6e 74 65 72 72 75 70 74 2c 0d 77 68 69 |d interrupt,.whi| 000007d0 63 68 20 69 73 20 6e 6f 77 20 69 6e 20 74 68 65 |ch is now in the| 000007e0 20 49 2f 4f 20 70 72 6f 63 65 73 73 6f 72 2e 0d | I/O processor..| 000007f0 0d 41 66 74 65 72 20 49 52 51 31 56 20 68 61 73 |.After IRQ1V has| 00000800 20 62 65 65 6e 20 72 65 76 65 63 74 6f 72 65 64 | been revectored| 00000810 20 74 6f 20 74 68 65 20 6e 65 77 20 49 2f 4f 20 | to the new I/O | 00000820 70 72 6f 63 65 73 73 6f 72 20 72 6f 75 74 69 6e |processor routin| 00000830 65 2c 20 74 68 65 0d 6d 6f 75 73 65 20 67 65 6e |e, the.mouse gen| 00000840 65 72 61 74 65 64 20 69 6e 74 65 72 72 75 70 74 |erated interrupt| 00000850 73 20 63 61 6e 20 62 65 20 64 65 61 6c 74 20 77 |s can be dealt w| 00000860 69 74 68 20 69 6e 20 74 68 65 20 49 2f 4f 20 70 |ith in the I/O p| 00000870 72 6f 63 65 73 73 6f 72 20 69 6e 0d 65 78 61 63 |rocessor in.exac| 00000880 74 6c 79 20 74 68 65 20 73 61 6d 65 20 77 61 79 |tly the same way| 00000890 20 61 73 20 69 6c 6c 75 73 74 72 61 74 65 64 20 | as illustrated | 000008a0 69 6e 20 6d 6f 64 75 6c 65 20 31 20 61 6e 64 20 |in module 1 and | 000008b0 74 68 65 20 72 65 73 75 6c 74 20 63 61 6e 20 62 |the result can b| 000008c0 65 20 72 65 61 64 0d 61 74 20 61 6e 79 20 74 69 |e read.at any ti| 000008d0 6d 65 20 62 79 20 74 68 65 20 73 65 63 6f 6e 64 |me by the second| 000008e0 20 70 72 6f 63 65 73 73 6f 72 20 75 73 69 6e 67 | processor using| 000008f0 20 4f 73 77 6f 72 64 20 26 30 35 20 28 6f 72 20 | Osword &05 (or | 00000900 73 69 6d 70 6c 79 20 70 65 65 6b 65 64 20 69 66 |simply peeked if| 00000910 0d 74 68 65 20 73 65 63 6f 6e 64 20 70 72 6f 63 |.the second proc| 00000920 65 73 73 6f 72 20 69 73 20 6e 6f 74 20 62 65 69 |essor is not bei| 00000930 6e 67 20 75 73 65 64 29 2e 0d 0d 4f 73 77 6f 72 |ng used)...Oswor| 00000940 64 20 26 30 35 20 69 73 20 69 6d 70 6c 65 6d 65 |d &05 is impleme| 00000950 6e 74 65 64 20 69 6e 20 74 68 65 20 66 75 6e 63 |nted in the func| 00000960 74 69 6f 6e 20 46 4e 72 65 61 64 2e 20 54 68 69 |tion FNread. Thi| 00000970 73 20 66 75 6e 63 74 69 6f 6e 20 72 65 61 64 73 |s function reads| 00000980 20 61 0d 62 79 74 65 20 6f 66 20 49 2f 4f 20 70 | a.byte of I/O p| 00000990 72 6f 63 65 73 73 6f 72 20 6d 65 6d 6f 72 79 20 |rocessor memory | 000009a0 61 6e 64 20 63 61 6e 20 62 65 20 75 73 65 64 20 |and can be used | 000009b0 66 72 6f 6d 20 65 69 74 68 65 72 20 74 68 65 20 |from either the | 000009c0 73 65 63 6f 6e 64 0d 70 72 6f 63 65 73 73 6f 72 |second.processor| 000009d0 20 6f 72 20 74 68 65 20 49 2f 4f 20 70 72 6f 63 | or the I/O proc| 000009e0 65 73 73 6f 72 2e 20 49 74 20 69 73 2c 20 68 6f |essor. It is, ho| 000009f0 77 65 76 65 72 2c 20 76 65 72 79 20 73 6c 6f 77 |wever, very slow| 00000a00 20 77 68 65 6e 20 63 6f 6d 70 61 72 65 64 0d 77 | when compared.w| 00000a10 69 74 68 20 75 73 69 6e 67 20 74 68 65 20 42 41 |ith using the BA| 00000a20 53 49 43 20 69 6e 64 69 72 65 63 74 69 6f 6e 20 |SIC indirection | 00000a30 6f 70 65 72 61 74 6f 72 73 20 61 6e 64 2c 20 69 |operators and, i| 00000a40 66 20 74 68 65 20 70 72 6f 67 72 61 6d 20 75 73 |f the program us| 00000a50 69 6e 67 20 74 68 65 0d 6d 6f 75 73 65 20 69 73 |ing the.mouse is| 00000a60 20 72 75 6e 6e 69 6e 67 20 69 6e 20 74 68 65 20 | running in the | 00000a70 49 2f 4f 20 70 72 6f 63 65 73 73 6f 72 2c 20 69 |I/O processor, i| 00000a80 74 20 69 73 20 66 61 72 20 71 75 69 63 6b 65 72 |t is far quicker| 00000a90 20 74 6f 20 70 65 65 6b 20 61 6e 64 20 70 6f 6b | to peek and pok| 00000aa0 65 0d 74 68 65 20 6d 65 6d 6f 72 79 20 6c 6f 63 |e.the memory loc| 00000ab0 61 74 69 6f 6e 73 20 64 69 72 65 63 74 6c 79 20 |ations directly | 00000ac0 74 68 61 6e 20 74 6f 20 75 73 65 20 4f 73 77 6f |than to use Oswo| 00000ad0 72 64 20 26 30 35 2e 0d 0d 43 68 61 69 6e 20 74 |rd &05...Chain t| 00000ae0 68 65 20 70 72 6f 67 72 61 6d 20 53 50 4d 4f 55 |he program SPMOU| 00000af0 53 45 20 77 68 69 63 68 20 63 61 6e 20 62 65 20 |SE which can be | 00000b00 75 73 65 64 20 77 69 74 68 20 65 69 74 68 65 72 |used with either| 00000b10 20 61 20 36 35 30 32 20 73 65 63 6f 6e 64 0d 70 | a 6502 second.p| 00000b20 72 6f 63 65 73 73 6f 72 20 6f 72 20 77 69 74 68 |rocessor or with| 00000b30 20 74 68 65 20 49 2f 4f 20 70 72 6f 63 65 73 73 | the I/O process| 00000b40 6f 72 20 6f 6e 20 69 74 73 20 6f 77 6e 2e 20 54 |or on its own. T| 00000b50 68 65 20 6d 6f 75 73 65 20 62 75 74 74 6f 6e 73 |he mouse buttons| 00000b60 20 61 72 65 0d 70 6f 6c 6c 65 64 20 75 73 69 6e | are.polled usin| 00000b70 67 20 4f 73 62 79 74 65 20 26 39 36 20 74 6f 20 |g Osbyte &96 to | 00000b80 72 65 61 64 20 61 20 62 79 74 65 20 69 6e 20 53 |read a byte in S| 00000b90 68 65 69 6c 61 2e 20 54 68 69 73 20 72 6f 75 74 |heila. This rout| 00000ba0 69 6e 65 20 69 73 20 54 75 62 65 0d 63 6f 6d 70 |ine is Tube.comp| 00000bb0 61 74 69 62 6c 65 20 61 6e 64 20 66 61 73 74 65 |atible and faste| 00000bc0 72 20 74 68 61 6e 20 4f 73 77 6f 72 64 20 26 30 |r than Osword &0| 00000bd0 35 2e 20 4f 73 62 79 74 65 73 20 26 39 32 20 74 |5. Osbytes &92 t| 00000be0 6f 20 26 39 37 20 63 61 6e 20 62 65 20 75 73 65 |o &97 can be use| 00000bf0 64 20 74 6f 0d 72 65 61 64 20 6f 72 20 77 72 69 |d to.read or wri| 00000c00 74 65 20 74 6f 20 6d 65 6d 6f 72 79 20 6d 61 70 |te to memory map| 00000c10 70 65 64 20 49 2f 4f 20 68 61 72 64 77 61 72 65 |ped I/O hardware| 00000c20 20 61 6e 64 20 61 72 65 20 61 6c 6c 20 6d 75 63 | and are all muc| 00000c30 68 20 71 75 69 63 6b 65 72 20 74 68 61 6e 0d 75 |h quicker than.u| 00000c40 73 69 6e 67 20 65 69 74 68 65 72 20 4f 73 77 6f |sing either Oswo| 00000c50 72 64 20 26 30 35 20 6f 72 20 4f 73 77 6f 72 64 |rd &05 or Osword| 00000c60 20 26 30 36 20 69 6e 20 74 68 69 73 20 61 72 65 | &06 in this are| 00000c70 61 20 6f 66 20 6d 65 6d 6f 72 79 2e 0d 0d 0d 20 |a of memory.... | 00000c80 20 20 31 30 20 52 45 4d 3e 20 53 50 4d 4f 55 53 | 10 REM> SPMOUS| 00000c90 45 0d 20 20 20 32 30 20 44 49 4d 20 70 61 72 61 |E. 20 DIM para| 00000ca0 6d 20 26 31 30 20 3a 52 45 4d 3a 20 4f 73 77 6f |m &10 :REM: Oswo| 00000cb0 72 64 20 70 61 72 61 6d 65 74 65 72 20 62 6c 6f |rd parameter blo| 00000cc0 63 6b 0d 20 20 20 33 30 20 44 49 4d 20 6d 63 6f |ck. 30 DIM mco| 00000cd0 64 65 20 26 31 30 30 20 3a 52 45 4d 3a 20 61 73 |de &100 :REM: as| 00000ce0 73 65 6d 62 6c 65 20 61 74 20 6d 63 6f 64 65 0d |semble at mcode.| 00000cf0 20 20 20 34 30 20 69 6f 61 64 64 72 3d 26 41 30 | 40 ioaddr=&A0| 00000d00 30 20 3a 52 45 4d 3a 20 61 64 64 72 65 73 73 20 |0 :REM: address | 00000d10 66 6f 72 20 6d 61 63 68 69 6e 65 20 63 6f 64 65 |for machine code| 00000d20 0d 20 20 20 35 30 20 78 63 6f 6f 72 64 3d 26 38 |. 50 xcoord=&8| 00000d30 30 20 3a 52 45 4d 3a 20 78 20 63 6f 6f 72 64 69 |0 :REM: x coordi| 00000d40 6e 61 74 65 2c 20 72 61 6e 67 65 20 30 2d 32 35 |nate, range 0-25| 00000d50 35 0d 20 20 20 36 30 20 79 63 6f 6f 72 64 3d 26 |5. 60 ycoord=&| 00000d60 38 31 20 3a 52 45 4d 3a 20 79 20 63 6f 6f 72 64 |81 :REM: y coord| 00000d70 69 6e 61 74 65 2c 20 72 61 6e 67 65 20 30 2d 32 |inate, range 0-2| 00000d80 35 35 0d 20 20 20 37 30 20 73 61 76 65 72 65 67 |55. 70 savereg| 00000d90 3d 26 46 43 20 3a 52 45 4d 3a 20 69 6e 74 65 72 |=&FC :REM: inter| 00000da0 72 75 70 74 20 61 63 63 75 6d 75 6c 61 74 6f 72 |rupt accumulator| 00000db0 20 73 61 76 65 20 72 65 67 69 73 74 65 72 0d 20 | save register. | 00000dc0 20 20 38 30 20 75 73 65 72 76 3d 26 32 30 30 20 | 80 userv=&200 | 00000dd0 3a 52 45 4d 3a 20 75 73 65 72 20 76 65 63 74 6f |:REM: user vecto| 00000de0 72 0d 20 20 20 39 30 20 69 72 71 31 76 3d 26 32 |r. 90 irq1v=&2| 00000df0 30 34 20 3a 52 45 4d 3a 20 70 72 69 6d 61 72 79 |04 :REM: primary| 00000e00 20 69 6e 74 65 72 72 75 70 74 20 76 65 63 74 6f | interrupt vecto| 00000e10 72 0d 20 20 31 30 30 20 64 72 62 3d 26 46 45 36 |r. 100 drb=&FE6| 00000e20 30 20 3a 52 45 4d 3a 20 64 61 74 61 20 72 65 67 |0 :REM: data reg| 00000e30 69 73 74 65 72 20 42 0d 20 20 31 31 30 20 64 64 |ister B. 110 dd| 00000e40 72 62 3d 26 46 45 36 32 20 3a 52 45 4d 3a 20 64 |rb=&FE62 :REM: d| 00000e50 61 74 61 20 64 69 72 65 63 74 69 6f 6e 20 72 65 |ata direction re| 00000e60 67 69 73 74 65 72 20 42 0d 20 20 31 32 30 20 70 |gister B. 120 p| 00000e70 63 72 3d 26 46 45 36 43 20 3a 52 45 4d 3a 20 70 |cr=&FE6C :REM: p| 00000e80 65 72 69 70 68 65 72 61 6c 20 63 6f 6e 74 72 6f |eripheral contro| 00000e90 6c 20 72 65 67 69 73 74 65 72 0d 20 20 31 33 30 |l register. 130| 00000ea0 20 69 66 72 3d 26 46 45 36 44 20 3a 52 45 4d 3a | ifr=&FE6D :REM:| 00000eb0 20 69 6e 74 65 72 72 75 70 74 20 66 6c 61 67 20 | interrupt flag | 00000ec0 72 65 67 69 73 74 65 72 0d 20 20 31 34 30 20 69 |register. 140 i| 00000ed0 65 72 3d 26 46 45 36 45 20 3a 52 45 4d 3a 20 69 |er=&FE6E :REM: i| 00000ee0 6e 74 65 72 72 75 70 74 20 65 6e 61 62 6c 65 20 |nterrupt enable | 00000ef0 72 65 67 69 73 74 65 72 0d 20 20 31 35 30 20 6f |register. 150 o| 00000f00 73 77 6f 72 64 3d 26 46 46 46 31 0d 20 20 31 36 |sword=&FFF1. 16| 00000f10 30 20 6f 73 62 79 74 65 3d 26 46 46 46 34 0d 20 |0 osbyte=&FFF4. | 00000f20 20 31 37 30 20 46 4f 52 20 70 61 73 73 3d 34 20 | 170 FOR pass=4 | 00000f30 54 4f 20 36 20 53 54 45 50 20 32 0d 20 20 31 38 |TO 6 STEP 2. 18| 00000f40 30 20 4f 25 3d 6d 63 6f 64 65 0d 20 20 31 39 30 |0 O%=mcode. 190| 00000f50 20 50 25 3d 69 6f 61 64 64 72 0d 20 20 32 30 30 | P%=ioaddr. 200| 00000f60 20 5b 20 20 20 20 20 20 20 4f 50 54 20 70 61 73 | [ OPT pas| 00000f70 73 0d 20 20 32 31 30 20 20 20 20 20 20 20 20 20 |s. 210 | 00000f80 43 4d 50 20 23 26 30 30 20 20 20 20 20 20 5c 20 |CMP #&00 \ | 00000f90 69 73 20 74 68 69 73 20 2a 43 4f 44 45 3f 0d 20 |is this *CODE?. | 00000fa0 20 32 32 30 20 20 20 20 20 20 20 20 20 42 4e 45 | 220 BNE| 00000fb0 20 72 65 74 75 72 6e 20 20 20 20 5c 20 72 65 74 | return \ ret| 00000fc0 75 72 6e 20 69 66 20 6e 6f 74 20 2a 43 4f 44 45 |urn if not *CODE| 00000fd0 0d 20 20 32 33 30 20 20 20 20 20 20 20 20 20 4c |. 230 L| 00000fe0 44 58 20 69 72 71 31 76 20 20 20 20 20 5c 20 63 |DX irq1v \ c| 00000ff0 75 72 72 65 6e 74 20 70 72 69 6d 61 72 79 20 69 |urrent primary i| 00001000 6e 74 65 72 72 75 70 74 20 76 65 63 74 6f 72 2c |nterrupt vector,| 00001010 20 6c 6f 77 20 62 79 74 65 0d 20 20 32 34 30 20 | low byte. 240 | 00001020 20 20 20 20 20 20 20 20 4c 44 59 20 69 72 71 31 | LDY irq1| 00001030 76 2b 31 20 20 20 5c 20 63 75 72 72 65 6e 74 20 |v+1 \ current | 00001040 70 72 69 6d 61 72 79 20 69 6e 74 65 72 72 75 70 |primary interrup| 00001050 74 20 76 65 63 74 6f 72 2c 20 68 69 67 68 20 62 |t vector, high b| 00001060 79 74 65 0d 20 20 32 35 30 20 20 20 20 20 20 20 |yte. 250 | 00001070 20 20 43 50 59 20 23 69 6e 74 65 72 72 75 70 74 | CPY #interrupt| 00001080 20 44 49 56 20 32 35 36 20 5c 20 63 6f 6d 70 61 | DIV 256 \ compa| 00001090 72 65 20 68 69 67 68 20 62 79 74 65 0d 20 20 32 |re high byte. 2| 000010a0 36 30 20 20 20 20 20 20 20 20 20 42 45 51 20 64 |60 BEQ d| 000010b0 69 73 61 62 6c 65 20 20 20 5c 20 72 65 73 74 6f |isable \ resto| 000010c0 72 65 20 6f 6c 64 20 76 65 63 74 6f 72 20 69 66 |re old vector if| 000010d0 20 61 6c 74 65 72 65 64 0d 20 20 32 37 30 20 20 | altered. 270 | 000010e0 20 20 20 20 20 20 20 53 54 58 20 6f 6c 64 69 72 | STX oldir| 000010f0 71 31 76 20 20 5c 20 73 61 76 65 20 6f 72 69 67 |q1v \ save orig| 00001100 69 6e 61 6c 20 69 72 71 31 20 76 65 63 74 6f 72 |inal irq1 vector| 00001110 2c 20 6c 6f 77 20 62 79 74 65 0d 20 20 32 38 30 |, low byte. 280| 00001120 20 20 20 20 20 20 20 20 20 53 54 59 20 6f 6c 64 | STY old| 00001130 69 72 71 31 76 2b 31 20 5c 20 73 61 76 65 20 6f |irq1v+1 \ save o| 00001140 72 69 67 69 6e 61 6c 20 69 72 71 31 20 76 65 63 |riginal irq1 vec| 00001150 74 6f 72 2c 20 68 69 67 68 20 62 79 74 65 0d 20 |tor, high byte. | 00001160 20 32 39 30 20 20 20 20 20 20 20 20 20 4c 44 58 | 290 LDX| 00001170 20 23 69 6e 74 65 72 72 75 70 74 20 4d 4f 44 20 | #interrupt MOD | 00001180 32 35 36 20 5c 20 6e 65 77 20 69 72 71 31 20 76 |256 \ new irq1 v| 00001190 65 63 74 6f 72 2c 20 6c 6f 77 20 62 79 74 65 0d |ector, low byte.| 000011a0 20 20 33 30 30 20 20 20 20 20 20 20 20 20 4c 44 | 300 LD| 000011b0 59 20 23 69 6e 74 65 72 72 75 70 74 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30 20 20 20 20 20 20 20 20 20 43 4c | 340 CL| 000012a0 49 20 20 20 20 20 20 20 20 20 20 20 5c 20 63 6c |I \ cl| 000012b0 65 61 72 20 69 6e 74 65 72 72 75 70 74 20 64 69 |ear interrupt di| 000012c0 73 61 62 6c 65 20 66 6c 61 67 0d 20 20 33 35 30 |sable flag. 350| 000012d0 20 20 20 20 20 20 20 20 20 4c 44 41 20 23 26 39 | LDA #&9| 000012e0 38 20 20 20 20 20 20 5c 20 25 31 30 30 31 31 30 |8 \ %100110| 000012f0 30 30 2c 20 69 65 2e 20 65 6e 61 62 6c 65 20 43 |00, ie. enable C| 00001300 42 31 2f 32 0d 20 20 33 36 30 20 20 20 20 20 20 |B1/2. 360 | 00001310 20 20 20 53 54 41 20 69 65 72 20 20 20 20 20 20 | STA ier | 00001320 20 5c 20 69 6e 74 65 72 72 75 70 74 20 65 6e 61 | \ interrupt ena| 00001330 62 6c 65 20 72 65 67 69 73 74 65 72 0d 20 20 33 |ble register. 3| 00001340 37 30 20 20 20 20 20 20 20 20 20 4c 44 41 20 70 |70 LDA p| 00001350 63 72 20 20 20 20 20 20 20 5c 20 70 65 72 69 70 |cr \ perip| 00001360 68 65 72 61 6c 20 63 6f 6e 74 72 6f 6c 20 72 65 |heral control re| 00001370 67 69 73 74 65 72 0d 20 20 33 38 30 20 20 20 20 |gister. 380 | 00001380 20 20 20 20 20 41 4e 44 20 23 26 30 46 20 20 20 | AND #&0F | 00001390 20 20 20 5c 20 41 4e 44 20 77 69 74 68 20 25 30 | \ AND with %0| 000013a0 30 30 30 31 31 31 31 2c 20 69 65 20 63 6c 65 61 |0001111, ie clea| 000013b0 72 20 62 69 74 73 20 34 2d 37 0d 20 20 33 39 30 |r bits 4-7. 390| 000013c0 20 20 20 20 20 20 20 20 20 4f 52 41 20 23 26 35 | ORA #&5| 000013d0 30 20 20 20 20 20 20 5c 20 4f 52 20 77 69 74 68 |0 \ OR with| 000013e0 20 25 30 31 30 31 30 30 30 30 2c 20 69 65 2e 20 | %01010000, ie. | 000013f0 73 65 74 20 62 69 74 73 20 34 20 61 6e 64 20 36 |set bits 4 and 6| 00001400 0d 20 20 34 30 30 20 20 20 20 20 20 20 20 20 53 |. 400 S| 00001410 54 41 20 70 63 72 20 20 20 20 20 20 20 5c 20 69 |TA pcr \ i| 00001420 6e 74 65 72 72 75 70 74 20 6f 6e 20 2b 76 65 20 |nterrupt on +ve | 00001430 74 72 61 6e 73 69 74 69 6f 6e 2c 20 43 42 32 20 |transition, CB2 | 00001440 69 6e 70 75 74 2c 0d 20 20 20 20 20 20 20 20 20 |input,. | 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69 |1v \ original i| 00001610 72 71 31 20 76 65 63 74 6f 72 2c 20 6c 6f 77 20 |rq1 vector, low | 00001620 62 79 74 65 0d 20 20 35 30 30 20 20 20 20 20 20 |byte. 500 | 00001630 20 20 20 4c 44 59 20 6f 6c 64 69 72 71 31 76 2b | LDY oldirq1v+| 00001640 31 20 5c 20 6f 72 69 67 69 6e 61 6c 20 69 72 71 |1 \ original irq| 00001650 31 20 76 65 63 74 6f 72 2c 20 68 69 67 68 20 62 |1 vector, high b| 00001660 79 74 65 0d 20 20 35 31 30 20 20 20 20 20 20 20 |yte. 510 | 00001670 20 20 53 45 49 20 20 20 20 20 20 20 20 20 20 20 | SEI | 00001680 5c 20 73 65 74 20 69 6e 74 65 72 72 75 70 74 20 |\ set interrupt | 00001690 64 69 73 61 62 6c 65 20 66 6c 61 67 0d 20 20 35 |disable flag. 5| 000016a0 32 30 20 20 20 20 20 20 20 20 20 53 54 41 20 69 |20 STA i| 000016b0 65 72 20 20 20 20 20 20 20 5c 20 69 6e 74 65 72 |er \ inter| 000016c0 72 75 70 74 20 65 6e 61 62 6c 65 20 72 65 67 69 |rupt enable regi| 000016d0 73 74 65 72 0d 20 20 35 33 30 20 20 20 20 20 20 |ster. 530 | 000016e0 20 20 20 4c 44 41 20 70 63 72 20 20 20 20 20 20 | LDA pcr | 000016f0 20 5c 20 70 65 72 69 70 68 65 72 61 6c 20 63 6f | \ peripheral co| 00001700 6e 74 72 6f 6c 20 72 65 67 69 73 74 65 72 0d 20 |ntrol register. | 00001710 20 35 34 30 20 20 20 20 20 20 20 20 20 41 4e 44 | 540 AND| 00001720 20 23 26 30 46 20 20 20 20 20 20 5c 20 63 6c 65 | #&0F \ cle| 00001730 61 72 20 62 69 74 73 20 34 2d 37 0d 20 20 35 35 |ar bits 4-7. 55| 00001740 30 20 20 20 20 20 20 20 20 20 53 54 41 20 70 63 |0 STA pc| 00001750 72 20 20 20 20 20 20 20 5c 20 70 65 72 69 70 68 |r \ periph| 00001760 65 72 61 6c 20 63 6f 6e 74 72 6f 6c 20 72 65 67 |eral control reg| 00001770 69 73 74 65 72 0d 20 20 35 36 30 20 20 20 20 20 |ister. 560 | 00001780 20 20 20 20 53 54 58 20 69 72 71 31 76 20 20 20 | STX irq1v | 00001790 20 20 5c 20 72 65 73 74 6f 72 65 20 74 68 65 20 | \ restore the | 000017a0 6f 72 69 67 69 6e 61 6c 20 69 72 71 31 20 76 65 |original irq1 ve| 000017b0 63 74 6f 72 2c 20 6c 6f 77 20 62 79 74 65 0d 20 |ctor, low byte. | 000017c0 20 35 37 30 20 20 20 20 20 20 20 20 20 53 54 59 | 570 STY| 000017d0 20 69 72 71 31 76 2b 31 20 20 20 5c 20 72 65 73 | irq1v+1 \ res| 000017e0 74 6f 72 65 20 74 68 65 20 6f 72 69 67 69 6e 61 |tore the origina| 000017f0 6c 20 69 72 71 31 20 76 65 63 74 6f 72 2c 20 68 |l irq1 vector, h| 00001800 69 67 68 20 62 79 74 65 0d 20 20 35 38 30 20 20 |igh byte. 580 | 00001810 20 20 20 20 20 20 20 43 4c 49 20 20 20 20 20 20 | CLI | 00001820 20 20 20 20 20 5c 20 63 6c 65 61 72 20 69 6e 74 | \ clear int| 00001830 65 72 72 75 70 74 20 64 69 73 61 62 6c 65 20 66 |errupt disable f| 00001840 6c 61 67 0d 20 20 35 39 30 20 20 20 20 20 20 20 |lag. 590 | 00001850 20 20 52 54 53 20 20 20 20 20 20 20 20 20 20 20 | RTS | 00001860 5c 20 72 65 74 75 72 6e 20 74 6f 20 42 41 53 49 |\ return to BASI| 00001870 43 0d 20 20 36 30 30 20 2e 69 6e 74 65 72 72 75 |C. 600 .interru| 00001880 70 74 0d 20 20 36 31 30 20 20 20 20 20 20 20 20 |pt. 610 | 00001890 20 4c 44 41 20 73 61 76 65 72 65 67 20 20 20 5c | LDA savereg \| 000018a0 20 69 6e 74 65 72 72 75 70 74 20 61 63 63 75 6d | interrupt accum| 000018b0 75 6c 61 74 6f 72 20 73 61 76 65 20 72 65 67 69 |ulator save regi| 000018c0 73 74 65 72 0d 20 20 36 32 30 20 20 20 20 20 20 |ster. 620 | 000018d0 20 20 20 50 48 41 20 20 20 20 20 20 20 20 20 20 | PHA | 000018e0 20 5c 20 61 6e 64 20 70 75 73 68 20 69 74 20 6f | \ and push it o| 000018f0 6e 20 74 68 65 20 73 74 61 63 6b 0d 20 20 36 33 |n the stack. 63| 00001900 30 20 20 20 20 20 20 20 20 20 4c 44 41 20 69 66 |0 LDA if| 00001910 72 20 20 20 20 20 20 20 5c 20 69 6e 74 65 72 72 |r \ interr| 00001920 75 70 74 20 66 6c 61 67 20 72 65 67 69 73 74 65 |upt flag registe| 00001930 72 0d 20 20 36 34 30 20 20 20 20 20 20 20 20 20 |r. 640 | 00001940 42 50 4c 20 6e 6f 74 75 73 65 72 20 20 20 5c 20 |BPL notuser \ | 00001950 62 69 74 20 37 20 69 73 20 73 65 74 20 69 66 20 |bit 7 is set if | 00001960 56 49 41 2d 42 20 69 6e 74 65 72 72 75 70 74 0d |VIA-B interrupt.| 00001970 20 20 36 35 30 20 20 20 20 20 20 20 20 20 41 4e | 650 AN| 00001980 44 20 23 26 31 38 20 20 20 20 20 20 5c 20 41 4e |D #&18 \ AN| 00001990 44 20 77 69 74 68 20 25 30 30 30 31 31 30 30 30 |D with %00011000| 000019a0 2c 20 69 65 2e 20 74 65 73 74 20 62 69 74 73 20 |, ie. test bits | 000019b0 33 20 61 6e 64 20 34 0d 20 20 36 36 30 20 20 20 |3 and 4. 660 | 000019c0 20 20 20 20 20 20 42 45 51 20 6e 6f 74 75 73 65 | BEQ notuse| 000019d0 72 20 20 20 5c 20 65 78 69 74 20 69 66 20 6e 6f |r \ exit if no| 000019e0 74 20 43 42 31 20 6f 72 20 43 42 32 0d 20 20 36 |t CB1 or CB2. 6| 000019f0 37 30 20 20 20 20 20 20 20 20 20 41 4e 44 20 23 |70 AND #| 00001a00 26 31 30 20 20 20 20 20 20 5c 20 41 4e 44 20 77 |&10 \ AND w| 00001a10 69 74 68 20 25 30 30 30 31 30 30 30 30 2c 20 69 |ith %00010000, i| 00001a20 65 2e 20 74 65 73 74 20 62 69 74 20 34 0d 20 20 |e. test bit 4. | 00001a30 36 38 30 20 20 20 20 20 20 20 20 20 42 4e 45 20 |680 BNE | 00001a40 78 70 75 6c 73 65 20 20 20 20 5c 20 62 69 74 20 |xpulse \ bit | 00001a50 34 20 73 65 74 20 66 6f 72 20 61 6e 20 58 20 64 |4 set for an X d| 00001a60 69 72 65 63 74 69 6f 6e 20 6d 6f 76 65 6d 65 6e |irection movemen| 00001a70 74 0d 20 20 36 39 30 20 20 20 20 20 20 20 20 20 |t. 690 | 00001a80 4c 44 41 20 64 72 62 20 20 20 20 20 20 20 5c 20 |LDA drb \ | 00001a90 59 20 64 69 72 65 63 74 69 6f 6e 2c 20 6c 6f 61 |Y direction, loa| 00001aa0 64 20 64 61 74 61 20 72 65 67 69 73 74 65 72 20 |d data register | 00001ab0 42 0d 20 20 37 30 30 20 20 20 20 20 20 20 20 20 |B. 700 | 00001ac0 41 4e 44 20 23 26 30 34 20 20 20 20 20 20 5c 20 |AND #&04 \ | 00001ad0 41 4e 44 20 77 69 74 68 20 25 30 30 30 30 30 31 |AND with %000001| 00001ae0 30 30 2c 20 69 65 2e 20 74 65 73 74 20 62 69 74 |00, ie. test bit| 00001af0 20 32 0d 20 20 37 31 30 20 20 20 20 20 20 20 20 | 2. 710 | 00001b00 20 42 4e 45 20 79 64 6f 77 6e 20 20 20 20 20 5c | BNE ydown \| 00001b10 20 69 66 20 62 69 74 20 32 20 69 73 20 73 65 74 | if bit 2 is set| 00001b20 20 74 68 65 6e 20 59 20 69 73 20 67 6f 69 6e 67 | then Y is going| 00001b30 20 64 6f 77 6e 0d 20 20 37 32 30 20 20 20 20 20 | down. 720 | 00001b40 20 20 20 20 49 4e 43 20 79 63 6f 6f 72 64 20 20 | INC ycoord | 00001b50 20 20 5c 20 59 20 69 73 20 67 6f 69 6e 67 20 75 | \ Y is going u| 00001b60 70 20 73 6f 20 69 6e 63 72 65 6d 65 6e 74 20 59 |p so increment Y| 00001b70 20 63 6f 6f 72 64 69 6e 61 74 65 0d 20 20 37 33 | coordinate. 73| 00001b80 30 20 20 20 20 20 20 20 20 20 42 4e 45 20 65 78 |0 BNE ex| 00001b90 69 74 20 20 20 20 20 20 5c 20 62 72 61 6e 63 68 |it \ branch| 00001ba0 20 69 66 20 69 6e 20 74 68 65 20 72 61 6e 67 65 | if in the range| 00001bb0 20 31 20 74 6f 20 32 35 35 0d 20 20 37 34 30 20 | 1 to 255. 740 | 00001bc0 20 20 20 20 20 20 20 20 42 45 51 20 64 65 63 79 | BEQ decy| 00001bd0 20 20 20 20 20 20 5c 20 69 66 20 7a 65 72 6f 20 | \ if zero | 00001be0 74 68 65 6e 20 61 6c 74 65 72 20 74 6f 20 32 35 |then alter to 25| 00001bf0 35 0d 20 20 37 35 30 20 2e 79 64 6f 77 6e 0d 20 |5. 750 .ydown. | 00001c00 20 37 36 30 20 20 20 20 20 20 20 20 20 4c 44 41 | 760 LDA| 00001c10 20 79 63 6f 6f 72 64 20 20 20 20 5c 20 6c 6f 61 | ycoord \ loa| 00001c20 64 20 59 20 63 6f 6f 72 64 69 6e 61 74 65 0d 20 |d Y coordinate. | 00001c30 20 37 37 30 20 20 20 20 20 20 20 20 20 42 45 51 | 770 BEQ| 00001c40 20 65 78 69 74 20 20 20 20 20 20 5c 20 62 72 61 | exit \ bra| 00001c50 6e 63 68 20 69 66 20 7a 65 72 6f 20 62 65 63 61 |nch if zero beca| 00001c60 75 73 65 20 69 74 20 63 61 6e 27 74 20 67 6f 20 |use it can't go | 00001c70 61 6e 79 20 6c 6f 77 65 72 0d 20 20 37 38 30 20 |any lower. 780 | 00001c80 2e 64 65 63 79 0d 20 20 37 39 30 20 20 20 20 20 |.decy. 790 | 00001c90 20 20 20 20 44 45 43 20 79 63 6f 6f 72 64 20 20 | DEC ycoord | 00001ca0 20 20 5c 20 72 65 64 75 63 65 20 59 20 63 6f 6f | \ reduce Y coo| 00001cb0 72 64 69 6e 61 74 65 20 62 79 20 31 0d 20 20 38 |rdinate by 1. 8| 00001cc0 30 30 20 20 20 20 20 20 20 20 20 4a 4d 50 20 65 |00 JMP e| 00001cd0 78 69 74 20 20 20 20 20 20 5c 20 72 65 73 74 6f |xit \ resto| 00001ce0 72 65 20 69 6e 74 65 72 72 75 70 74 20 61 63 63 |re interrupt acc| 00001cf0 75 6d 75 6c 61 74 6f 72 20 73 61 76 65 20 72 65 |umulator save re| 00001d00 67 69 73 74 65 72 0d 20 20 20 20 20 20 20 20 20 |gister. | 00001d10 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001d20 20 20 20 5c 20 61 6e 64 20 52 54 49 0d 20 20 38 | \ and RTI. 8| 00001d30 31 30 20 2e 78 70 75 6c 73 65 0d 20 20 38 32 30 |10 .xpulse. 820| 00001d40 20 20 20 20 20 20 20 20 20 4c 44 41 20 64 72 62 | LDA drb| 00001d50 20 20 20 20 20 20 20 5c 20 6c 6f 61 64 20 64 61 | \ load da| 00001d60 74 61 20 72 65 67 69 73 74 65 72 20 42 0d 20 20 |ta register B. | 00001d70 38 33 30 20 20 20 20 20 20 20 20 20 52 4f 52 20 |830 ROR | 00001d80 41 20 20 20 20 20 20 20 20 20 5c 20 62 69 74 20 |A \ bit | 00001d90 30 20 69 6e 74 6f 20 63 61 72 72 79 0d 20 20 38 |0 into carry. 8| 00001da0 34 30 20 20 20 20 20 20 20 20 20 42 43 53 20 78 |40 BCS x| 00001db0 64 6f 77 6e 20 20 20 20 20 5c 20 58 20 69 73 20 |down \ X is | 00001dc0 67 6f 69 6e 67 20 64 6f 77 6e 20 69 66 20 62 69 |going down if bi| 00001dd0 74 20 30 20 69 73 20 73 65 74 0d 20 20 38 35 30 |t 0 is set. 850| 00001de0 20 20 20 20 20 20 20 20 20 49 4e 43 20 78 63 6f | INC xco| 00001df0 6f 72 64 20 20 20 20 5c 20 58 20 69 73 20 67 6f |ord \ X is go| 00001e00 69 6e 67 20 75 70 20 69 66 20 62 69 74 20 30 20 |ing up if bit 0 | 00001e10 69 73 20 63 6c 65 61 72 0d 20 20 38 36 30 20 20 |is clear. 860 | 00001e20 20 20 20 20 20 20 20 42 4e 45 20 65 78 69 74 20 | BNE exit | 00001e30 20 20 20 20 20 5c 20 65 78 69 74 20 69 66 20 58 | \ exit if X| 00001e40 20 63 6f 6f 72 64 69 6e 61 74 65 20 69 73 20 69 | coordinate is i| 00001e50 6e 20 74 68 65 20 72 61 6e 67 65 0d 20 20 20 20 |n the range. | 00001e60 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001e70 20 20 20 20 20 20 20 20 5c 20 66 72 6f 6d 20 31 | \ from 1| 00001e80 20 74 6f 20 32 35 35 0d 20 20 38 37 30 20 20 20 | to 255. 870 | 00001e90 20 20 20 20 20 20 42 45 51 20 64 65 63 78 20 20 | BEQ decx | 00001ea0 20 20 20 20 5c 20 69 66 20 58 20 63 6f 6f 72 64 | \ if X coord| 00001eb0 69 6e 61 74 65 20 3d 20 30 20 74 68 65 6e 20 6d |inate = 0 then m| 00001ec0 61 6b 65 20 69 74 20 32 35 35 0d 20 20 38 38 30 |ake it 255. 880| 00001ed0 20 2e 78 64 6f 77 6e 0d 20 20 38 39 30 20 20 20 | .xdown. 890 | 00001ee0 20 20 20 20 20 20 4c 44 41 20 78 63 6f 6f 72 64 | LDA xcoord| 00001ef0 20 20 20 20 5c 20 6c 6f 61 64 20 58 20 63 6f 6f | \ load X coo| 00001f00 72 64 69 6e 61 74 65 0d 20 20 39 30 30 20 20 20 |rdinate. 900 | 00001f10 20 20 20 20 20 20 42 45 51 20 65 78 69 74 20 20 | BEQ exit | 00001f20 20 20 20 20 5c 20 69 66 20 69 74 20 69 73 20 7a | \ if it is z| 00001f30 65 72 6f 20 69 74 20 63 61 6e 27 74 20 67 6f 20 |ero it can't go | 00001f40 61 6e 79 20 6c 6f 77 65 72 0d 20 20 39 31 30 20 |any lower. 910 | 00001f50 2e 64 65 63 78 0d 20 20 39 32 30 20 20 20 20 20 |.decx. 920 | 00001f60 20 20 20 20 44 45 43 20 78 63 6f 6f 72 64 20 20 | DEC xcoord | 00001f70 20 20 5c 20 64 65 63 72 65 61 73 65 20 58 20 63 | \ decrease X c| 00001f80 6f 6f 72 64 69 6e 61 74 65 20 62 79 20 31 0d 20 |oordinate by 1. | 00001f90 20 39 33 30 20 2e 65 78 69 74 0d 20 20 39 34 30 | 930 .exit. 940| 00001fa0 20 20 20 20 20 20 20 20 20 50 4c 41 20 20 20 20 | PLA | 00001fb0 20 20 20 20 20 20 20 5c 20 70 75 6c 6c 20 69 6e | \ pull in| 00001fc0 74 65 72 72 75 70 74 20 61 63 63 75 6d 75 6c 61 |terrupt accumula| 00001fd0 74 6f 72 20 73 61 76 65 20 72 65 67 69 73 74 65 |tor save registe| 00001fe0 72 20 6f 66 66 0d 20 20 20 20 20 20 20 20 20 20 |r off. | 00001ff0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00002000 20 20 5c 20 74 68 65 20 73 74 61 63 6b 0d 20 20 | \ the stack. | 00002010 39 35 30 20 20 20 20 20 20 20 20 20 53 54 41 20 |950 STA | 00002020 73 61 76 65 72 65 67 20 20 20 5c 20 61 6e 64 20 |savereg \ and | 00002030 72 65 73 74 6f 72 65 20 7a 65 72 6f 20 70 61 67 |restore zero pag| 00002040 65 0d 20 20 39 36 30 20 20 20 20 20 20 20 20 20 |e. 960 | 00002050 52 54 49 20 20 20 20 20 20 20 20 20 20 20 5c 20 |RTI \ | 00002060 72 65 74 75 72 6e 20 66 72 6f 6d 20 69 6e 74 65 |return from inte| 00002070 72 72 75 70 74 0d 20 20 39 37 30 20 2e 6e 6f 74 |rrupt. 970 .not| 00002080 75 73 65 72 0d 20 20 39 38 30 20 20 20 20 20 20 |user. 980 | 00002090 20 20 20 50 4c 41 20 20 20 20 20 20 20 20 20 20 | PLA | 000020a0 20 5c 20 70 75 6c 6c 20 74 68 65 20 69 6e 74 65 | \ pull the inte| 000020b0 72 72 75 70 74 20 61 63 63 75 6d 75 6c 61 74 6f |rrupt accumulato| 000020c0 72 20 73 61 76 65 20 72 65 67 69 73 74 65 72 0d |r save register.| 000020d0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000020e0 20 20 20 20 20 20 20 20 20 20 20 20 5c 20 6f 66 | \ of| 000020f0 66 20 74 68 65 20 73 74 61 63 6b 0d 20 20 39 39 |f the stack. 99| 00002100 30 20 20 20 20 20 20 20 20 20 53 54 41 20 73 61 |0 STA sa| 00002110 76 65 72 65 67 20 20 20 5c 20 72 65 73 74 6f 72 |vereg \ restor| 00002120 65 20 74 68 65 20 7a 65 72 6f 20 70 61 67 65 20 |e the zero page | 00002130 61 64 64 72 65 73 73 0d 20 31 30 30 30 20 20 20 |address. 1000 | 00002140 20 20 20 20 20 20 4a 4d 50 20 28 6f 6c 64 69 72 | JMP (oldir| 00002150 71 31 76 29 20 5c 20 65 78 69 74 20 76 69 61 20 |q1v) \ exit via | 00002160 74 68 65 20 6f 72 69 67 69 6e 61 6c 20 76 65 63 |the original vec| 00002170 74 6f 72 0d 20 31 30 31 30 20 2e 6f 6c 64 69 72 |tor. 1010 .oldir| 00002180 71 31 76 0d 20 31 30 32 30 20 20 20 20 20 20 20 |q1v. 1020 | 00002190 20 20 45 51 55 57 20 26 30 30 20 20 20 20 20 20 | EQUW &00 | 000021a0 5c 20 6f 72 69 67 69 6e 61 6c 20 69 72 71 31 20 |\ original irq1 | 000021b0 76 65 63 74 6f 72 0d 20 31 30 33 30 20 2e 6c 61 |vector. 1030 .la| 000021c0 73 74 62 79 74 65 0d 20 31 30 34 30 20 5d 0d 20 |stbyte. 1040 ]. | 000021d0 31 30 35 30 20 4e 45 58 54 0d 20 31 30 36 30 20 |1050 NEXT. 1060 | 000021e0 65 6e 64 3d 6d 63 6f 64 65 2b 28 6c 61 73 74 62 |end=mcode+(lastb| 000021f0 79 74 65 2d 69 6f 61 64 64 72 29 0d 20 31 30 37 |yte-ioaddr). 107| 00002200 30 20 61 64 64 72 3d 69 6f 61 64 64 72 0d 20 31 |0 addr=ioaddr. 1| 00002210 30 38 30 20 46 4f 52 20 62 79 74 65 3d 6d 63 6f |080 FOR byte=mco| 00002220 64 65 20 54 4f 20 65 6e 64 0d 20 31 30 39 30 20 |de TO end. 1090 | 00002230 50 52 4f 43 77 72 69 74 65 28 3f 62 79 74 65 2c |PROCwrite(?byte,| 00002240 61 64 64 72 29 0d 20 31 31 30 30 20 61 64 64 72 |addr). 1100 addr| 00002250 3d 61 64 64 72 2b 31 0d 20 31 31 31 30 20 4e 45 |=addr+1. 1110 NE| 00002260 58 54 0d 20 31 31 32 30 20 50 52 4f 43 77 72 69 |XT. 1120 PROCwri| 00002270 74 65 28 28 69 6f 61 64 64 72 20 4d 4f 44 20 32 |te((ioaddr MOD 2| 00002280 35 36 29 2c 75 73 65 72 76 29 0d 20 31 31 33 30 |56),userv). 1130| 00002290 20 50 52 4f 43 77 72 69 74 65 28 28 69 6f 61 64 | PROCwrite((ioad| 000022a0 64 72 20 44 49 56 20 32 35 36 29 2c 75 73 65 72 |dr DIV 256),user| 000022b0 76 2b 31 29 0d 20 31 31 34 30 20 2a 43 4f 44 45 |v+1). 1140 *CODE| 000022c0 0d 20 31 31 35 30 20 4d 4f 44 45 37 0d 20 31 31 |. 1150 MODE7. 11| 000022d0 36 30 20 6d 6f 75 73 65 24 3d 43 48 52 24 31 34 |60 mouse$=CHR$14| 000022e0 31 2b 43 48 52 24 31 33 32 2b 43 48 52 24 31 35 |1+CHR$132+CHR$15| 000022f0 37 2b 43 48 52 24 31 33 31 2b 0d 20 20 20 20 20 |7+CHR$131+. | 00002300 20 22 4d 6f 75 73 65 20 63 6f 6f 72 64 69 6e 61 | "Mouse coordina| 00002310 74 65 73 2c 20 72 61 6e 67 65 20 26 30 30 2d 26 |tes, range &00-&| 00002320 46 46 20 20 22 2b 43 48 52 24 31 35 36 0d 20 31 |FF "+CHR$156. 1| 00002330 31 37 30 20 50 52 49 4e 54 54 41 42 28 30 2c 31 |170 PRINTTAB(0,1| 00002340 29 6d 6f 75 73 65 24 0d 20 31 31 38 30 20 50 52 |)mouse$. 1180 PR| 00002350 49 4e 54 54 41 42 28 30 2c 32 29 6d 6f 75 73 65 |INTTAB(0,2)mouse| 00002360 24 0d 20 31 31 39 30 20 4f 4e 45 52 52 4f 52 20 |$. 1190 ONERROR | 00002370 47 4f 54 4f 20 31 32 39 30 0d 20 31 32 30 30 20 |GOTO 1290. 1200 | 00002380 56 44 55 32 33 2c 31 2c 30 3b 30 3b 30 3b 30 3b |VDU23,1,0;0;0;0;| 00002390 0d 20 31 32 31 30 20 50 52 49 4e 54 54 41 42 28 |. 1210 PRINTTAB(| 000023a0 31 30 2c 37 29 22 42 79 74 65 73 20 75 73 65 64 |10,7)"Bytes used| 000023b0 20 3d 20 26 22 3b 7e 28 6c 61 73 74 62 79 74 65 | = &";~(lastbyte| 000023c0 2d 69 6f 61 64 64 72 29 0d 20 31 32 32 30 20 52 |-ioaddr). 1220 R| 000023d0 45 50 45 41 54 0d 20 31 32 33 30 20 50 52 49 4e |EPEAT. 1230 PRIN| 000023e0 54 54 41 42 28 31 30 2c 31 32 29 22 58 20 3d 20 |TTAB(10,12)"X = | 000023f0 26 22 3b 7e 46 4e 72 65 61 64 28 26 38 30 29 3b |&";~FNread(&80);| 00002400 22 20 22 0d 20 31 32 34 30 20 50 52 49 4e 54 54 |" ". 1240 PRINTT| 00002410 41 42 28 32 30 2c 31 32 29 22 59 20 3d 20 26 22 |AB(20,12)"Y = &"| 00002420 3b 7e 46 4e 72 65 61 64 28 26 38 31 29 3b 22 20 |;~FNread(&81);" | 00002430 22 0d 20 31 32 35 30 20 49 46 20 46 4e 72 69 67 |". 1250 IF FNrig| 00002440 68 74 20 50 52 49 4e 54 54 41 42 28 32 32 2c 31 |ht PRINTTAB(22,1| 00002450 37 29 22 52 69 67 68 74 22 20 45 4c 53 45 20 50 |7)"Right" ELSE P| 00002460 52 49 4e 54 54 41 42 28 32 32 2c 31 37 29 22 20 |RINTTAB(22,17)" | 00002470 20 20 20 20 22 0d 20 31 32 36 30 20 49 46 20 46 | ". 1260 IF F| 00002480 4e 63 65 6e 74 72 65 20 50 52 49 4e 54 54 41 42 |Ncentre PRINTTAB| 00002490 28 31 35 2c 31 37 29 22 43 65 6e 74 72 65 22 20 |(15,17)"Centre" | 000024a0 45 4c 53 45 20 50 52 49 4e 54 54 41 42 28 31 35 |ELSE PRINTTAB(15| 000024b0 2c 31 37 29 22 20 20 20 20 20 20 22 0d 20 31 32 |,17)" ". 12| 000024c0 37 30 20 49 46 20 46 4e 6c 65 66 74 20 50 52 49 |70 IF FNleft PRI| 000024d0 4e 54 54 41 42 28 31 30 2c 31 37 29 22 4c 65 66 |NTTAB(10,17)"Lef| 000024e0 74 22 20 45 4c 53 45 20 50 52 49 4e 54 54 41 42 |t" ELSE PRINTTAB| 000024f0 28 31 30 2c 31 37 29 22 20 20 20 20 22 0d 20 31 |(10,17)" ". 1| 00002500 32 38 30 20 55 4e 54 49 4c 20 46 41 4c 53 45 0d |280 UNTIL FALSE.| 00002510 20 31 32 39 30 20 2a 43 4f 44 45 0d 20 31 33 30 | 1290 *CODE. 130| 00002520 30 20 56 44 55 32 33 2c 31 2c 31 3b 30 3b 30 3b |0 VDU23,1,1;0;0;| 00002530 30 3b 33 31 2c 30 2c 32 33 0d 20 31 33 31 30 20 |0;31,0,23. 1310 | 00002540 45 4e 44 0d 20 31 33 32 30 20 44 45 46 50 52 4f |END. 1320 DEFPRO| 00002550 43 77 72 69 74 65 28 64 61 74 61 2c 61 64 64 72 |Cwrite(data,addr| 00002560 29 0d 20 31 33 33 30 20 21 70 61 72 61 6d 3d 61 |). 1330 !param=a| 00002570 64 64 72 20 4f 52 20 26 46 46 46 46 30 30 30 30 |ddr OR &FFFF0000| 00002580 0d 20 31 33 34 30 20 70 61 72 61 6d 3f 34 3d 64 |. 1340 param?4=d| 00002590 61 74 61 0d 20 31 33 35 30 20 41 25 3d 36 0d 20 |ata. 1350 A%=6. | 000025a0 31 33 36 30 20 58 25 3d 70 61 72 61 6d 20 4d 4f |1360 X%=param MO| 000025b0 44 20 32 35 36 0d 20 31 33 37 30 20 59 25 3d 70 |D 256. 1370 Y%=p| 000025c0 61 72 61 6d 20 44 49 56 20 32 35 36 0d 20 31 33 |aram DIV 256. 13| 000025d0 38 30 20 43 41 4c 4c 20 6f 73 77 6f 72 64 0d 20 |80 CALL osword. | 000025e0 31 33 39 30 20 45 4e 44 50 52 4f 43 0d 20 31 34 |1390 ENDPROC. 14| 000025f0 30 30 20 44 45 46 46 4e 72 65 61 64 28 61 64 64 |00 DEFFNread(add| 00002600 72 29 0d 20 31 34 31 30 20 21 70 61 72 61 6d 3d |r). 1410 !param=| 00002610 61 64 64 72 20 4f 52 20 26 46 46 46 46 30 30 30 |addr OR &FFFF000| 00002620 30 0d 20 31 34 32 30 20 41 25 3d 35 0d 20 31 34 |0. 1420 A%=5. 14| 00002630 33 30 20 58 25 3d 70 61 72 61 6d 20 4d 4f 44 20 |30 X%=param MOD | 00002640 32 35 36 0d 20 31 34 34 30 20 59 25 3d 70 61 72 |256. 1440 Y%=par| 00002650 61 6d 20 44 49 56 20 32 35 36 0d 20 31 34 35 30 |am DIV 256. 1450| 00002660 20 43 41 4c 4c 20 6f 73 77 6f 72 64 0d 20 31 34 | CALL osword. 14| 00002670 36 30 20 3d 70 61 72 61 6d 3f 34 0d 20 31 34 37 |60 =param?4. 147| 00002680 30 20 44 45 46 46 4e 62 75 74 74 6f 6e 0d 20 31 |0 DEFFNbutton. 1| 00002690 34 38 30 20 41 25 3d 26 39 36 0d 20 31 34 39 30 |480 A%=&96. 1490| 000026a0 20 58 25 3d 26 36 30 0d 20 31 35 30 30 20 3d 28 | X%=&60. 1500 =(| 000026b0 55 53 52 28 6f 73 62 79 74 65 29 20 41 4e 44 20 |USR(osbyte) AND | 000026c0 26 46 46 30 30 30 30 29 44 49 56 26 31 30 30 30 |&FF0000)DIV&1000| 000026d0 30 0d 20 31 35 31 30 20 44 45 46 46 4e 72 69 67 |0. 1510 DEFFNrig| 000026e0 68 74 0d 20 31 35 32 30 20 3d 28 28 46 4e 62 75 |ht. 1520 =((FNbu| 000026f0 74 74 6f 6e 20 41 4e 44 20 26 38 30 29 3d 30 29 |tton AND &80)=0)| 00002700 0d 20 31 35 33 30 20 44 45 46 46 4e 63 65 6e 74 |. 1530 DEFFNcent| 00002710 72 65 0d 20 31 35 34 30 20 3d 28 28 46 4e 62 75 |re. 1540 =((FNbu| 00002720 74 74 6f 6e 20 41 4e 44 20 26 34 30 29 3d 30 29 |tton AND &40)=0)| 00002730 0d 20 31 35 35 30 20 44 45 46 46 4e 6c 65 66 74 |. 1550 DEFFNleft| 00002740 0d 20 31 35 36 30 20 3d 28 28 46 4e 62 75 74 74 |. 1560 =((FNbutt| 00002750 6f 6e 20 41 4e 44 20 26 32 30 29 3d 30 29 0d |on AND &20)=0).| 0000275f
02-12-88/T\MOU02.m0
02-12-88/T\MOU02.m1
02-12-88/T\MOU02.m2
02-12-88/T\MOU02.m4
02-12-88/T\MOU02.m5
.