Home » CEEFAX disks » telesoftware11.adl » 27-11-88/MOUSE
27-11-88/MOUSE
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: | 27-11-88/MOUSE |
| Read OK: | ✔ |
| File size: | 10B9 bytes |
| Load address: | FFFF1900 |
| Exec address: | FFFF8023 |
File contents
10REM> MOUSE 20DIM mcode &200 :REM: machine code at mcode 30xcoord=&80 :REM: x coordinate, range 0-255 40ycoord=&81 :REM: y coordinate, range 0-255 50savereg=&FC :REM: interrupt accumulator save register 60irq1v=&204 :REM: primary interrupt vector 70drb=&FE60 :REM: data register B 80ddrb=&FE62 :REM: data direction register B 90pcr=&FE6C :REM: peripheral control register 100ifr=&FE6D :REM: interrupt flag register 110ier=&FE6E :REM: interrupt enable register 120FOR pass=0 TO 2 STEP 2 130P%=mcode 140[OPT pass 150LDX irq1v \ current primary interrupt vector, low byte 160LDY irq1v+1 \ current primary interrupt vector, high byte 170CPY #interrupt DIV 256 \ compare high byte 180BEQ disable \ restore old vector if altered 190STX oldirq1v \ save original irq1 vector, low byte 200STY oldirq1v+1 \ save original irq1 vector, high byte 210LDX #interrupt MOD 256 \ new irq1 vector, low byte 220LDY #interrupt DIV 256 \ new irq1 vector, high byte 230SEI \ set interrupt disable flag 240STX irq1v \ alter irq1 vector, low byte 250STY irq1v+1 \ alter irq1 vector, high byte 260CLI \ clear interrupt disable flag 270LDA #&98 \ %10011000, ie. enable CB1/2 280STA ier \ interrupt enable register 290LDA pcr \ peripheral control register 300AND #&0F \ AND with %00001111, ie clear bits 4-7 310ORA #&50 \ OR with %01010000, ie. set bits 4 and 6 320STA pcr \ interrupt on +ve transition, CB2 input, DRB to clear 330LDA #&00 \ user port input 340STA ddrb \ data direction register B 350STA xcoord \ initial value for x coordinate 360STA ycoord \ initial value for y coordinate 370RTS \ return to BASIC 380.disable 390LDA #&18 \ %00011000, ready to clear bits 3 and 4 of ier 400LDX oldirq1v \ original irq1 vector, low byte 410LDY oldirq1v+1 \ original irq1 vector, high byte 420SEI \ set interrupt disable flag 430STA ier \ interrupt enable register 440LDA pcr \ peripheral control register 450AND #&0F \ clear bits 4-7 460STA pcr \ peripheral control register 470STX irq1v \ restore the original irq1 vector, low byte 480STY irq1v+1 \ restore the original irq1 vector, high byte 490CLI \ clear interrupt disable flag 500RTS \ return to BASIC 510.interrupt 520LDA savereg \ interrupt accumulator save register 530PHA \ and push it on the stack 540LDA ifr \ interrupt flag register 550BPL notuser \ bit 7 is set if VIA-B interrupt 560AND #&18 \ AND with %00011000, ie. test bits 3 and 4 570BEQ notuser \ exit if not CB1 or CB2 580AND #&10 \ AND with %00010000, ie. test CB1 590BNE xpulse \ bit 4 set for an X direction movement 600LDA drb \ Y direction, load data register B 610AND #&04 \ AND with %00000100, ie. test bit 2 620BNE ydown \ if bit 2 is set then Y is going down 630INC ycoord \ Y is going up so increment Y coordinate 640BNE exit \ branch if in the range 1 to 255 650BEQ decy \ if zero then alter to 255 660.ydown 670LDA ycoord \ load Y coordinate 680BEQ exit \ branch if zero because it can't go any lower 690.decy 700DEC ycoord \ reduce Y coordinate by 1 710JMP exit \ restore interrupt accumulator save register and RTI 720.xpulse 730LDA drb \ data register B 740ROR A \ bit 0 into carry 750BCS xdown \ X is going down if bit 0 is set 760INC xcoord \ X is going up if bit 0 is clear 770BNE exit \ exit if X coordinate is in the range from 1 to 255 780BEQ decx \ if X coordinate = 0 then make it 255 790.xdown 800LDA xcoord \ load X coordinate 810BEQ exit \ if it is zero it can't go any lower 820.decx 830DEC xcoord \ decrease X coordinate by 1 840.exit 850PLA \ pull interrupt accumulator save register off the stack 860STA savereg \ and restore zero page 870RTI \ return from interrupt 880.notuser 890PLA \ pull the interrupt accumulator save register off the stack 900STA savereg \ restore the zero page address 910JMP (oldirq1v) \ exit via the original vector 920.oldirq1v 930EQUW &00 \ original irq1v 940.lastbyte 950] 960NEXT 970CALL mcode 980MODE7 990mouse$=CHR$141+CHR$132+CHR$157+CHR$131+"Mouse coordinates, range &00-&FF "+CHR$156 1000PRINTTAB(0,1)mouse$ 1010PRINTTAB(0,2)mouse$ 1020VDU23,1,0;0;0;0; 1030ONERROR GOTO 1120 1040PRINTTAB(10,7)"Bytes used = &";~lastbyte-mcode 1050REPEAT 1060PRINTTAB(10,12)"X = &";~?&80;" "TAB(20,12);"Y = &";~?&81;" " 1070button=?drb :REM: data register B 1080IF (button AND &80)=0 PRINTTAB(22,17)"Right" ELSE PRINTTAB(22,17)" " 1090IF (button AND &40)=0 PRINTTAB(15,17)"Centre" ELSE PRINTTAB(15,17)" " 1100IF (button AND &20)=0 PRINTTAB(10,17)"Left" ELSE PRINTTAB(10,17)" " 1110UNTIL FALSE 1120VDU23,1,1;0;0;0; 1130CALL mcode
�> MOUSE *� mcode &200 :�: machine code at mcode ,xcoord=&80 :�: x coordinate, range 0-255 (,ycoord=&81 :�: y coordinate, range 0-255 27savereg=&FC :�: interrupt accumulator save register <+irq1v=&204 :�: primary interrupt vector F!drb=&FE60 :�: data register B P,ddrb=&FE62 :�: data direction register B Z-pcr=&FE6C :�: peripheral control register d)ifr=&FE6D :�: interrupt flag register n+ier=&FE6E :�: interrupt enable register x� pass=0 � 2 � 2 � P%=mcode � [OPT pass �:LDX irq1v \ current primary interrupt vector, low byte �=LDY irq1v+1 \ current primary interrupt vector, high byte �,CPY #interrupt � 256 \ compare high byte �/BEQ disable \ restore old vector if altered �6STX oldirq1v \ save original irq1 vector, low byte �9STY oldirq1v+1 \ save original irq1 vector, high byte �4LDX #interrupt � 256 \ new irq1 vector, low byte �5LDY #interrupt � 256 \ new irq1 vector, high byte �$SEI \ set interrupt disable flag �+STX irq1v \ alter irq1 vector, low byte �.STY irq1v+1 \ alter irq1 vector, high byte &CLI \ clear interrupt disable flag *LDA #&98 \ %10011000, ie. enable CB1/2 'STA ier \ interrupt enable register ")LDA pcr \ peripheral control register ,0� #&0F \ � with %00001111, ie clear bits 4-7 64�A #&50 \ � with %01010000, ie. set bits 4 and 6 @BSTA pcr \ interrupt on +ve transition, CB2 input, DRB to clear J LDA #&00 \ user port input T(STA ddrb \ data direction register B ^/STA xcoord \ initial value for x coordinate h/STA ycoord \ initial value for y coordinate rRTS \ return to BASIC | .disable �<LDA #&18 \ %00011000, ready to clear bits 3 and 4 of ier �1LDX oldirq1v \ original irq1 vector, low byte �4LDY oldirq1v+1 \ original irq1 vector, high byte �$SEI \ set interrupt disable flag �'STA ier \ interrupt enable register �)LDA pcr \ peripheral control register �� #&0F \ clear bits 4-7 �)STA pcr \ peripheral control register �:STX irq1v \ restore the original irq1 vector, low byte �=STY irq1v+1 \ restore the original irq1 vector, high byte �&CLI \ clear interrupt disable flag �RTS \ return to BASIC �.interrupt 5LDA savereg \ interrupt accumulator save register "PHA \ and push it on the stack %LDA ifr \ interrupt flag register &1BPL notuser \ bit 7 is set if VIA-B interrupt 04� #&18 \ � with %00011000, ie. test bits 3 and 4 :(BEQ notuser \ exit if not CB1 or CB2 D+� #&10 \ � with %00010000, ie. test CB1 N6BNE xpulse \ bit 4 set for an X direction movement X/LDA drb \ Y direction, load data register B b-� #&04 \ � with %00000100, ie. test bit 2 l4BNE ydown \ if bit 2 is set then Y is going down v8INC ycoord \ Y is going up so increment Y coordinate �.BNE exit \ branch if in the range 1 to 255 �(BEQ decy \ if zero then alter to 255 � .ydown �"LDA ycoord \ load Y coordinate �;BEQ exit \ branch if zero because it can't go any lower � .decy �)DEC ycoord \ reduce Y coordinate by 1 �BJMP exit \ restore interrupt accumulator save register and RTI � .xpulse � LDA drb \ data register B � ROR A \ bit 0 into carry �/BCS xdown \ X is going down if bit 0 is set �0INC xcoord \ X is going up if bit 0 is clear ABNE exit \ exit if X coordinate is in the range from 1 to 255 3BEQ decx \ if X coordinate = 0 then make it 255 .xdown "LDA xcoord \ load X coordinate *2BEQ exit \ if it is zero it can't go any lower 4 .decx >+DEC xcoord \ decrease X coordinate by 1 H .exit R@PLA \ pull interrupt accumulator save register off the stack \'STA savereg \ and restore zero page f RTI \ return from interrupt p .notuser zDPLA \ pull the interrupt accumulator save register off the stack �/STA savereg \ restore the zero page address �1JMP (oldirq1v) \ exit via the original vector � .oldirq1v � EQUW &00 \ original irq1v � .lastbyte �] �� � � mcode ��7 �Hmouse$=�141+�132+�157+�131+"Mouse coordinates, range &00-&FF "+�156 ��0,1)mouse$ ��0,2)mouse$ ��23,1,0;0;0;0; � � �D`D +�10,7)"Bytes used = &";~lastbyte-mcode � $6�10,12)"X = &";~?&80;" "�20,12);"Y = &";~?&81;" " .#button=?drb :�: data register B 88� (button � &80)=0 �22,17)"Right" � �22,17)" " B:� (button � &40)=0 �15,17)"Centre" � �15,17)" " L6� (button � &20)=0 �10,17)"Left" � �10,17)" " V� � `�23,1,1;0;0;0; j � mcode �
00000000 0d 00 0a 0c f4 3e 20 4d 4f 55 53 45 0d 00 14 2a |.....> MOUSE...*| 00000010 de 20 6d 63 6f 64 65 20 26 32 30 30 20 3a f4 3a |. mcode &200 :.:| 00000020 20 6d 61 63 68 69 6e 65 20 63 6f 64 65 20 61 74 | machine code at| 00000030 20 6d 63 6f 64 65 0d 00 1e 2c 78 63 6f 6f 72 64 | mcode...,xcoord| 00000040 3d 26 38 30 20 3a f4 3a 20 78 20 63 6f 6f 72 64 |=&80 :.: x coord| 00000050 69 6e 61 74 65 2c 20 72 61 6e 67 65 20 30 2d 32 |inate, range 0-2| 00000060 35 35 0d 00 28 2c 79 63 6f 6f 72 64 3d 26 38 31 |55..(,ycoord=&81| 00000070 20 3a f4 3a 20 79 20 63 6f 6f 72 64 69 6e 61 74 | :.: y coordinat| 00000080 65 2c 20 72 61 6e 67 65 20 30 2d 32 35 35 0d 00 |e, range 0-255..| 00000090 32 37 73 61 76 65 72 65 67 3d 26 46 43 20 3a f4 |27savereg=&FC :.| 000000a0 3a 20 69 6e 74 65 72 72 75 70 74 20 61 63 63 75 |: interrupt accu| 000000b0 6d 75 6c 61 74 6f 72 20 73 61 76 65 20 72 65 67 |mulator save reg| 000000c0 69 73 74 65 72 0d 00 3c 2b 69 72 71 31 76 3d 26 |ister..<+irq1v=&| 000000d0 32 30 34 20 3a f4 3a 20 70 72 69 6d 61 72 79 20 |204 :.: primary | 000000e0 69 6e 74 65 72 72 75 70 74 20 76 65 63 74 6f 72 |interrupt vector| 000000f0 0d 00 46 21 64 72 62 3d 26 46 45 36 30 20 3a f4 |..F!drb=&FE60 :.| 00000100 3a 20 64 61 74 61 20 72 65 67 69 73 74 65 72 20 |: data register | 00000110 42 0d 00 50 2c 64 64 72 62 3d 26 46 45 36 32 20 |B..P,ddrb=&FE62 | 00000120 3a f4 3a 20 64 61 74 61 20 64 69 72 65 63 74 69 |:.: data directi| 00000130 6f 6e 20 72 65 67 69 73 74 65 72 20 42 0d 00 5a |on register B..Z| 00000140 2d 70 63 72 3d 26 46 45 36 43 20 3a f4 3a 20 70 |-pcr=&FE6C :.: p| 00000150 65 72 69 70 68 65 72 61 6c 20 63 6f 6e 74 72 6f |eripheral contro| 00000160 6c 20 72 65 67 69 73 74 65 72 0d 00 64 29 69 66 |l register..d)if| 00000170 72 3d 26 46 45 36 44 20 3a f4 3a 20 69 6e 74 65 |r=&FE6D :.: inte| 00000180 72 72 75 70 74 20 66 6c 61 67 20 72 65 67 69 73 |rrupt flag regis| 00000190 74 65 72 0d 00 6e 2b 69 65 72 3d 26 46 45 36 45 |ter..n+ier=&FE6E| 000001a0 20 3a f4 3a 20 69 6e 74 65 72 72 75 70 74 20 65 | :.: interrupt e| 000001b0 6e 61 62 6c 65 20 72 65 67 69 73 74 65 72 0d 00 |nable register..| 000001c0 78 14 e3 20 70 61 73 73 3d 30 20 b8 20 32 20 88 |x.. pass=0 . 2 .| 000001d0 20 32 0d 00 82 0c 50 25 3d 6d 63 6f 64 65 0d 00 | 2....P%=mcode..| 000001e0 8c 0d 5b 4f 50 54 20 70 61 73 73 0d 00 96 3a 4c |..[OPT pass...:L| 000001f0 44 58 20 69 72 71 31 76 20 5c 20 63 75 72 72 65 |DX irq1v \ curre| 00000200 6e 74 20 70 72 69 6d 61 72 79 20 69 6e 74 65 72 |nt primary inter| 00000210 72 75 70 74 20 76 65 63 74 6f 72 2c 20 6c 6f 77 |rupt vector, low| 00000220 20 62 79 74 65 0d 00 a0 3d 4c 44 59 20 69 72 71 | byte...=LDY irq| 00000230 31 76 2b 31 20 5c 20 63 75 72 72 65 6e 74 20 70 |1v+1 \ current p| 00000240 72 69 6d 61 72 79 20 69 6e 74 65 72 72 75 70 74 |rimary interrupt| 00000250 20 76 65 63 74 6f 72 2c 20 68 69 67 68 20 62 79 | vector, high by| 00000260 74 65 0d 00 aa 2c 43 50 59 20 23 69 6e 74 65 72 |te...,CPY #inter| 00000270 72 75 70 74 20 81 20 32 35 36 20 5c 20 63 6f 6d |rupt . 256 \ com| 00000280 70 61 72 65 20 68 69 67 68 20 62 79 74 65 0d 00 |pare high byte..| 00000290 b4 2f 42 45 51 20 64 69 73 61 62 6c 65 20 5c 20 |./BEQ disable \ | 000002a0 72 65 73 74 6f 72 65 20 6f 6c 64 20 76 65 63 74 |restore old vect| 000002b0 6f 72 20 69 66 20 61 6c 74 65 72 65 64 0d 00 be |or if altered...| 000002c0 36 53 54 58 20 6f 6c 64 69 72 71 31 76 20 5c 20 |6STX oldirq1v \ | 000002d0 73 61 76 65 20 6f 72 69 67 69 6e 61 6c 20 69 72 |save original ir| 000002e0 71 31 20 76 65 63 74 6f 72 2c 20 6c 6f 77 20 62 |q1 vector, low b| 000002f0 79 74 65 0d 00 c8 39 53 54 59 20 6f 6c 64 69 72 |yte...9STY oldir| 00000300 71 31 76 2b 31 20 5c 20 73 61 76 65 20 6f 72 69 |q1v+1 \ save ori| 00000310 67 69 6e 61 6c 20 69 72 71 31 20 76 65 63 74 6f |ginal irq1 vecto| 00000320 72 2c 20 68 69 67 68 20 62 79 74 65 0d 00 d2 34 |r, high byte...4| 00000330 4c 44 58 20 23 69 6e 74 65 72 72 75 70 74 20 83 |LDX #interrupt .| 00000340 20 32 35 36 20 5c 20 6e 65 77 20 69 72 71 31 20 | 256 \ new irq1 | 00000350 76 65 63 74 6f 72 2c 20 6c 6f 77 20 62 79 74 65 |vector, low byte| 00000360 0d 00 dc 35 4c 44 59 20 23 69 6e 74 65 72 72 75 |...5LDY #interru| 00000370 70 74 20 81 20 32 35 36 20 5c 20 6e 65 77 20 69 |pt . 256 \ new i| 00000380 72 71 31 20 76 65 63 74 6f 72 2c 20 68 69 67 68 |rq1 vector, high| 00000390 20 62 79 74 65 0d 00 e6 24 53 45 49 20 5c 20 73 | byte...$SEI \ s| 000003a0 65 74 20 69 6e 74 65 72 72 75 70 74 20 64 69 73 |et interrupt dis| 000003b0 61 62 6c 65 20 66 6c 61 67 0d 00 f0 2b 53 54 58 |able flag...+STX| 000003c0 20 69 72 71 31 76 20 5c 20 61 6c 74 65 72 20 69 | irq1v \ alter i| 000003d0 72 71 31 20 76 65 63 74 6f 72 2c 20 6c 6f 77 20 |rq1 vector, low | 000003e0 62 79 74 65 0d 00 fa 2e 53 54 59 20 69 72 71 31 |byte....STY irq1| 000003f0 76 2b 31 20 5c 20 61 6c 74 65 72 20 69 72 71 31 |v+1 \ alter irq1| 00000400 20 76 65 63 74 6f 72 2c 20 68 69 67 68 20 62 79 | vector, high by| 00000410 74 65 0d 01 04 26 43 4c 49 20 5c 20 63 6c 65 61 |te...&CLI \ clea| 00000420 72 20 69 6e 74 65 72 72 75 70 74 20 64 69 73 61 |r interrupt disa| 00000430 62 6c 65 20 66 6c 61 67 0d 01 0e 2a 4c 44 41 20 |ble flag...*LDA | 00000440 23 26 39 38 20 5c 20 25 31 30 30 31 31 30 30 30 |#&98 \ %10011000| 00000450 2c 20 69 65 2e 20 65 6e 61 62 6c 65 20 43 42 31 |, ie. enable CB1| 00000460 2f 32 0d 01 18 27 53 54 41 20 69 65 72 20 5c 20 |/2...'STA ier \ | 00000470 69 6e 74 65 72 72 75 70 74 20 65 6e 61 62 6c 65 |interrupt enable| 00000480 20 72 65 67 69 73 74 65 72 0d 01 22 29 4c 44 41 | register..")LDA| 00000490 20 70 63 72 20 5c 20 70 65 72 69 70 68 65 72 61 | pcr \ periphera| 000004a0 6c 20 63 6f 6e 74 72 6f 6c 20 72 65 67 69 73 74 |l control regist| 000004b0 65 72 0d 01 2c 30 80 20 23 26 30 46 20 5c 20 80 |er..,0. #&0F \ .| 000004c0 20 77 69 74 68 20 25 30 30 30 30 31 31 31 31 2c | with %00001111,| 000004d0 20 69 65 20 63 6c 65 61 72 20 62 69 74 73 20 34 | ie clear bits 4| 000004e0 2d 37 0d 01 36 34 84 41 20 23 26 35 30 20 5c 20 |-7..64.A #&50 \ | 000004f0 84 20 77 69 74 68 20 25 30 31 30 31 30 30 30 30 |. with %01010000| 00000500 2c 20 69 65 2e 20 73 65 74 20 62 69 74 73 20 34 |, ie. set bits 4| 00000510 20 61 6e 64 20 36 0d 01 40 42 53 54 41 20 70 63 | and 6..@BSTA pc| 00000520 72 20 5c 20 69 6e 74 65 72 72 75 70 74 20 6f 6e |r \ interrupt on| 00000530 20 2b 76 65 20 74 72 61 6e 73 69 74 69 6f 6e 2c | +ve transition,| 00000540 20 43 42 32 20 69 6e 70 75 74 2c 20 44 52 42 20 | CB2 input, DRB | 00000550 74 6f 20 63 6c 65 61 72 0d 01 4a 1e 4c 44 41 20 |to clear..J.LDA | 00000560 23 26 30 30 20 5c 20 75 73 65 72 20 70 6f 72 74 |#&00 \ user port| 00000570 20 69 6e 70 75 74 0d 01 54 28 53 54 41 20 64 64 | input..T(STA dd| 00000580 72 62 20 5c 20 64 61 74 61 20 64 69 72 65 63 74 |rb \ data direct| 00000590 69 6f 6e 20 72 65 67 69 73 74 65 72 20 42 0d 01 |ion register B..| 000005a0 5e 2f 53 54 41 20 78 63 6f 6f 72 64 20 5c 20 69 |^/STA xcoord \ i| 000005b0 6e 69 74 69 61 6c 20 76 61 6c 75 65 20 66 6f 72 |nitial value for| 000005c0 20 78 20 63 6f 6f 72 64 69 6e 61 74 65 0d 01 68 | x coordinate..h| 000005d0 2f 53 54 41 20 79 63 6f 6f 72 64 20 5c 20 69 6e |/STA ycoord \ in| 000005e0 69 74 69 61 6c 20 76 61 6c 75 65 20 66 6f 72 20 |itial value for | 000005f0 79 20 63 6f 6f 72 64 69 6e 61 74 65 0d 01 72 19 |y coordinate..r.| 00000600 52 54 53 20 5c 20 72 65 74 75 72 6e 20 74 6f 20 |RTS \ return to | 00000610 42 41 53 49 43 0d 01 7c 0c 2e 64 69 73 61 62 6c |BASIC..|..disabl| 00000620 65 0d 01 86 3c 4c 44 41 20 23 26 31 38 20 5c 20 |e...<LDA #&18 \ | 00000630 25 30 30 30 31 31 30 30 30 2c 20 72 65 61 64 79 |%00011000, ready| 00000640 20 74 6f 20 63 6c 65 61 72 20 62 69 74 73 20 33 | to clear bits 3| 00000650 20 61 6e 64 20 34 20 6f 66 20 69 65 72 0d 01 90 | and 4 of ier...| 00000660 31 4c 44 58 20 6f 6c 64 69 72 71 31 76 20 5c 20 |1LDX oldirq1v \ | 00000670 6f 72 69 67 69 6e 61 6c 20 69 72 71 31 20 76 65 |original irq1 ve| 00000680 63 74 6f 72 2c 20 6c 6f 77 20 62 79 74 65 0d 01 |ctor, low byte..| 00000690 9a 34 4c 44 59 20 6f 6c 64 69 72 71 31 76 2b 31 |.4LDY oldirq1v+1| 000006a0 20 5c 20 6f 72 69 67 69 6e 61 6c 20 69 72 71 31 | \ original irq1| 000006b0 20 76 65 63 74 6f 72 2c 20 68 69 67 68 20 62 79 | vector, high by| 000006c0 74 65 0d 01 a4 24 53 45 49 20 5c 20 73 65 74 20 |te...$SEI \ set | 000006d0 69 6e 74 65 72 72 75 70 74 20 64 69 73 61 62 6c |interrupt disabl| 000006e0 65 20 66 6c 61 67 0d 01 ae 27 53 54 41 20 69 65 |e flag...'STA ie| 000006f0 72 20 5c 20 69 6e 74 65 72 72 75 70 74 20 65 6e |r \ interrupt en| 00000700 61 62 6c 65 20 72 65 67 69 73 74 65 72 0d 01 b8 |able register...| 00000710 29 4c 44 41 20 70 63 72 20 5c 20 70 65 72 69 70 |)LDA pcr \ perip| 00000720 68 65 72 61 6c 20 63 6f 6e 74 72 6f 6c 20 72 65 |heral control re| 00000730 67 69 73 74 65 72 0d 01 c2 1b 80 20 23 26 30 46 |gister..... #&0F| 00000740 20 5c 20 63 6c 65 61 72 20 62 69 74 73 20 34 2d | \ clear bits 4-| 00000750 37 0d 01 cc 29 53 54 41 20 70 63 72 20 5c 20 70 |7...)STA pcr \ p| 00000760 65 72 69 70 68 65 72 61 6c 20 63 6f 6e 74 72 6f |eripheral contro| 00000770 6c 20 72 65 67 69 73 74 65 72 0d 01 d6 3a 53 54 |l register...:ST| 00000780 58 20 69 72 71 31 76 20 5c 20 72 65 73 74 6f 72 |X irq1v \ restor| 00000790 65 20 74 68 65 20 6f 72 69 67 69 6e 61 6c 20 69 |e the original i| 000007a0 72 71 31 20 76 65 63 74 6f 72 2c 20 6c 6f 77 20 |rq1 vector, low | 000007b0 62 79 74 65 0d 01 e0 3d 53 54 59 20 69 72 71 31 |byte...=STY irq1| 000007c0 76 2b 31 20 5c 20 72 65 73 74 6f 72 65 20 74 68 |v+1 \ restore th| 000007d0 65 20 6f 72 69 67 69 6e 61 6c 20 69 72 71 31 20 |e original irq1 | 000007e0 76 65 63 74 6f 72 2c 20 68 69 67 68 20 62 79 74 |vector, high byt| 000007f0 65 0d 01 ea 26 43 4c 49 20 5c 20 63 6c 65 61 72 |e...&CLI \ clear| 00000800 20 69 6e 74 65 72 72 75 70 74 20 64 69 73 61 62 | interrupt disab| 00000810 6c 65 20 66 6c 61 67 0d 01 f4 19 52 54 53 20 5c |le flag....RTS \| 00000820 20 72 65 74 75 72 6e 20 74 6f 20 42 41 53 49 43 | return to BASIC| 00000830 0d 01 fe 0e 2e 69 6e 74 65 72 72 75 70 74 0d 02 |.....interrupt..| 00000840 08 35 4c 44 41 20 73 61 76 65 72 65 67 20 5c 20 |.5LDA savereg \ | 00000850 69 6e 74 65 72 72 75 70 74 20 61 63 63 75 6d 75 |interrupt accumu| 00000860 6c 61 74 6f 72 20 73 61 76 65 20 72 65 67 69 73 |lator save regis| 00000870 74 65 72 0d 02 12 22 50 48 41 20 5c 20 61 6e 64 |ter..."PHA \ and| 00000880 20 70 75 73 68 20 69 74 20 6f 6e 20 74 68 65 20 | push it on the | 00000890 73 74 61 63 6b 0d 02 1c 25 4c 44 41 20 69 66 72 |stack...%LDA ifr| 000008a0 20 5c 20 69 6e 74 65 72 72 75 70 74 20 66 6c 61 | \ interrupt fla| 000008b0 67 20 72 65 67 69 73 74 65 72 0d 02 26 31 42 50 |g register..&1BP| 000008c0 4c 20 6e 6f 74 75 73 65 72 20 5c 20 62 69 74 20 |L notuser \ bit | 000008d0 37 20 69 73 20 73 65 74 20 69 66 20 56 49 41 2d |7 is set if VIA-| 000008e0 42 20 69 6e 74 65 72 72 75 70 74 0d 02 30 34 80 |B interrupt..04.| 000008f0 20 23 26 31 38 20 5c 20 80 20 77 69 74 68 20 25 | #&18 \ . with %| 00000900 30 30 30 31 31 30 30 30 2c 20 69 65 2e 20 74 65 |00011000, ie. te| 00000910 73 74 20 62 69 74 73 20 33 20 61 6e 64 20 34 0d |st bits 3 and 4.| 00000920 02 3a 28 42 45 51 20 6e 6f 74 75 73 65 72 20 5c |.:(BEQ notuser \| 00000930 20 65 78 69 74 20 69 66 20 6e 6f 74 20 43 42 31 | exit if not CB1| 00000940 20 6f 72 20 43 42 32 0d 02 44 2b 80 20 23 26 31 | or CB2..D+. #&1| 00000950 30 20 5c 20 80 20 77 69 74 68 20 25 30 30 30 31 |0 \ . with %0001| 00000960 30 30 30 30 2c 20 69 65 2e 20 74 65 73 74 20 43 |0000, ie. test C| 00000970 42 31 0d 02 4e 36 42 4e 45 20 78 70 75 6c 73 65 |B1..N6BNE xpulse| 00000980 20 5c 20 62 69 74 20 34 20 73 65 74 20 66 6f 72 | \ bit 4 set for| 00000990 20 61 6e 20 58 20 64 69 72 65 63 74 69 6f 6e 20 | an X direction | 000009a0 6d 6f 76 65 6d 65 6e 74 0d 02 58 2f 4c 44 41 20 |movement..X/LDA | 000009b0 64 72 62 20 5c 20 59 20 64 69 72 65 63 74 69 6f |drb \ Y directio| 000009c0 6e 2c 20 6c 6f 61 64 20 64 61 74 61 20 72 65 67 |n, load data reg| 000009d0 69 73 74 65 72 20 42 0d 02 62 2d 80 20 23 26 30 |ister B..b-. #&0| 000009e0 34 20 5c 20 80 20 77 69 74 68 20 25 30 30 30 30 |4 \ . with %0000| 000009f0 30 31 30 30 2c 20 69 65 2e 20 74 65 73 74 20 62 |0100, ie. test b| 00000a00 69 74 20 32 0d 02 6c 34 42 4e 45 20 79 64 6f 77 |it 2..l4BNE ydow| 00000a10 6e 20 5c 20 69 66 20 62 69 74 20 32 20 69 73 20 |n \ if bit 2 is | 00000a20 73 65 74 20 74 68 65 6e 20 59 20 69 73 20 67 6f |set then Y is go| 00000a30 69 6e 67 20 64 6f 77 6e 0d 02 76 38 49 4e 43 20 |ing down..v8INC | 00000a40 79 63 6f 6f 72 64 20 5c 20 59 20 69 73 20 67 6f |ycoord \ Y is go| 00000a50 69 6e 67 20 75 70 20 73 6f 20 69 6e 63 72 65 6d |ing up so increm| 00000a60 65 6e 74 20 59 20 63 6f 6f 72 64 69 6e 61 74 65 |ent Y coordinate| 00000a70 0d 02 80 2e 42 4e 45 20 65 78 69 74 20 5c 20 62 |....BNE exit \ b| 00000a80 72 61 6e 63 68 20 69 66 20 69 6e 20 74 68 65 20 |ranch if in the | 00000a90 72 61 6e 67 65 20 31 20 74 6f 20 32 35 35 0d 02 |range 1 to 255..| 00000aa0 8a 28 42 45 51 20 64 65 63 79 20 5c 20 69 66 20 |.(BEQ decy \ if | 00000ab0 7a 65 72 6f 20 74 68 65 6e 20 61 6c 74 65 72 20 |zero then alter | 00000ac0 74 6f 20 32 35 35 0d 02 94 0a 2e 79 64 6f 77 6e |to 255.....ydown| 00000ad0 0d 02 9e 22 4c 44 41 20 79 63 6f 6f 72 64 20 5c |..."LDA ycoord \| 00000ae0 20 6c 6f 61 64 20 59 20 63 6f 6f 72 64 69 6e 61 | load Y coordina| 00000af0 74 65 0d 02 a8 3b 42 45 51 20 65 78 69 74 20 5c |te...;BEQ exit \| 00000b00 20 62 72 61 6e 63 68 20 69 66 20 7a 65 72 6f 20 | branch if zero | 00000b10 62 65 63 61 75 73 65 20 69 74 20 63 61 6e 27 74 |because it can't| 00000b20 20 67 6f 20 61 6e 79 20 6c 6f 77 65 72 0d 02 b2 | go any lower...| 00000b30 09 2e 64 65 63 79 0d 02 bc 29 44 45 43 20 79 63 |..decy...)DEC yc| 00000b40 6f 6f 72 64 20 5c 20 72 65 64 75 63 65 20 59 20 |oord \ reduce Y | 00000b50 63 6f 6f 72 64 69 6e 61 74 65 20 62 79 20 31 0d |coordinate by 1.| 00000b60 02 c6 42 4a 4d 50 20 65 78 69 74 20 5c 20 72 65 |..BJMP exit \ re| 00000b70 73 74 6f 72 65 20 69 6e 74 65 72 72 75 70 74 20 |store interrupt | 00000b80 61 63 63 75 6d 75 6c 61 74 6f 72 20 73 61 76 65 |accumulator save| 00000b90 20 72 65 67 69 73 74 65 72 20 61 6e 64 20 52 54 | register and RT| 00000ba0 49 0d 02 d0 0b 2e 78 70 75 6c 73 65 0d 02 da 1d |I.....xpulse....| 00000bb0 4c 44 41 20 64 72 62 20 5c 20 64 61 74 61 20 72 |LDA drb \ data r| 00000bc0 65 67 69 73 74 65 72 20 42 0d 02 e4 1c 52 4f 52 |egister B....ROR| 00000bd0 20 41 20 5c 20 62 69 74 20 30 20 69 6e 74 6f 20 | A \ bit 0 into | 00000be0 63 61 72 72 79 0d 02 ee 2f 42 43 53 20 78 64 6f |carry.../BCS xdo| 00000bf0 77 6e 20 5c 20 58 20 69 73 20 67 6f 69 6e 67 20 |wn \ X is going | 00000c00 64 6f 77 6e 20 69 66 20 62 69 74 20 30 20 69 73 |down if bit 0 is| 00000c10 20 73 65 74 0d 02 f8 30 49 4e 43 20 78 63 6f 6f | set...0INC xcoo| 00000c20 72 64 20 5c 20 58 20 69 73 20 67 6f 69 6e 67 20 |rd \ X is going | 00000c30 75 70 20 69 66 20 62 69 74 20 30 20 69 73 20 63 |up if bit 0 is c| 00000c40 6c 65 61 72 0d 03 02 41 42 4e 45 20 65 78 69 74 |lear...ABNE exit| 00000c50 20 5c 20 65 78 69 74 20 69 66 20 58 20 63 6f 6f | \ exit if X coo| 00000c60 72 64 69 6e 61 74 65 20 69 73 20 69 6e 20 74 68 |rdinate is in th| 00000c70 65 20 72 61 6e 67 65 20 66 72 6f 6d 20 31 20 74 |e range from 1 t| 00000c80 6f 20 32 35 35 0d 03 0c 33 42 45 51 20 64 65 63 |o 255...3BEQ dec| 00000c90 78 20 5c 20 69 66 20 58 20 63 6f 6f 72 64 69 6e |x \ if X coordin| 00000ca0 61 74 65 20 3d 20 30 20 74 68 65 6e 20 6d 61 6b |ate = 0 then mak| 00000cb0 65 20 69 74 20 32 35 35 0d 03 16 0a 2e 78 64 6f |e it 255.....xdo| 00000cc0 77 6e 0d 03 20 22 4c 44 41 20 78 63 6f 6f 72 64 |wn.. "LDA xcoord| 00000cd0 20 5c 20 6c 6f 61 64 20 58 20 63 6f 6f 72 64 69 | \ load X coordi| 00000ce0 6e 61 74 65 0d 03 2a 32 42 45 51 20 65 78 69 74 |nate..*2BEQ exit| 00000cf0 20 5c 20 69 66 20 69 74 20 69 73 20 7a 65 72 6f | \ if it is zero| 00000d00 20 69 74 20 63 61 6e 27 74 20 67 6f 20 61 6e 79 | it can't go any| 00000d10 20 6c 6f 77 65 72 0d 03 34 09 2e 64 65 63 78 0d | lower..4..decx.| 00000d20 03 3e 2b 44 45 43 20 78 63 6f 6f 72 64 20 5c 20 |.>+DEC xcoord \ | 00000d30 64 65 63 72 65 61 73 65 20 58 20 63 6f 6f 72 64 |decrease X coord| 00000d40 69 6e 61 74 65 20 62 79 20 31 0d 03 48 09 2e 65 |inate by 1..H..e| 00000d50 78 69 74 0d 03 52 40 50 4c 41 20 5c 20 70 75 6c |xit..R@PLA \ pul| 00000d60 6c 20 69 6e 74 65 72 72 75 70 74 20 61 63 63 75 |l interrupt accu| 00000d70 6d 75 6c 61 74 6f 72 20 73 61 76 65 20 72 65 67 |mulator save reg| 00000d80 69 73 74 65 72 20 6f 66 66 20 74 68 65 20 73 74 |ister off the st| 00000d90 61 63 6b 0d 03 5c 27 53 54 41 20 73 61 76 65 72 |ack..\'STA saver| 00000da0 65 67 20 5c 20 61 6e 64 20 72 65 73 74 6f 72 65 |eg \ and restore| 00000db0 20 7a 65 72 6f 20 70 61 67 65 0d 03 66 1f 52 54 | zero page..f.RT| 00000dc0 49 20 5c 20 72 65 74 75 72 6e 20 66 72 6f 6d 20 |I \ return from | 00000dd0 69 6e 74 65 72 72 75 70 74 0d 03 70 0c 2e 6e 6f |interrupt..p..no| 00000de0 74 75 73 65 72 0d 03 7a 44 50 4c 41 20 5c 20 70 |tuser..zDPLA \ p| 00000df0 75 6c 6c 20 74 68 65 20 69 6e 74 65 72 72 75 70 |ull the interrup| 00000e00 74 20 61 63 63 75 6d 75 6c 61 74 6f 72 20 73 61 |t accumulator sa| 00000e10 76 65 20 72 65 67 69 73 74 65 72 20 6f 66 66 20 |ve register off | 00000e20 74 68 65 20 73 74 61 63 6b 0d 03 84 2f 53 54 41 |the stack.../STA| 00000e30 20 73 61 76 65 72 65 67 20 5c 20 72 65 73 74 6f | savereg \ resto| 00000e40 72 65 20 74 68 65 20 7a 65 72 6f 20 70 61 67 65 |re the zero page| 00000e50 20 61 64 64 72 65 73 73 0d 03 8e 31 4a 4d 50 20 | address...1JMP | 00000e60 28 6f 6c 64 69 72 71 31 76 29 20 5c 20 65 78 69 |(oldirq1v) \ exi| 00000e70 74 20 76 69 61 20 74 68 65 20 6f 72 69 67 69 6e |t via the origin| 00000e80 61 6c 20 76 65 63 74 6f 72 0d 03 98 0d 2e 6f 6c |al vector.....ol| 00000e90 64 69 72 71 31 76 0d 03 a2 1d 45 51 55 57 20 26 |dirq1v....EQUW &| 00000ea0 30 30 20 5c 20 6f 72 69 67 69 6e 61 6c 20 69 72 |00 \ original ir| 00000eb0 71 31 76 0d 03 ac 0d 2e 6c 61 73 74 62 79 74 65 |q1v.....lastbyte| 00000ec0 0d 03 b6 05 5d 0d 03 c0 05 ed 0d 03 ca 0b d6 20 |....].......... | 00000ed0 6d 63 6f 64 65 0d 03 d4 06 eb 37 0d 03 de 48 6d |mcode.....7...Hm| 00000ee0 6f 75 73 65 24 3d bd 31 34 31 2b bd 31 33 32 2b |ouse$=.141+.132+| 00000ef0 bd 31 35 37 2b bd 31 33 31 2b 22 4d 6f 75 73 65 |.157+.131+"Mouse| 00000f00 20 63 6f 6f 72 64 69 6e 61 74 65 73 2c 20 72 61 | coordinates, ra| 00000f10 6e 67 65 20 26 30 30 2d 26 46 46 20 20 22 2b bd |nge &00-&FF "+.| 00000f20 31 35 36 0d 03 e8 10 f1 8a 30 2c 31 29 6d 6f 75 |156......0,1)mou| 00000f30 73 65 24 0d 03 f2 10 f1 8a 30 2c 32 29 6d 6f 75 |se$......0,2)mou| 00000f40 73 65 24 0d 03 fc 12 ef 32 33 2c 31 2c 30 3b 30 |se$.....23,1,0;0| 00000f50 3b 30 3b 30 3b 0d 04 06 0d ee 85 20 e5 20 8d 44 |;0;0;...... . .D| 00000f60 60 44 0d 04 10 2b f1 8a 31 30 2c 37 29 22 42 79 |`D...+..10,7)"By| 00000f70 74 65 73 20 75 73 65 64 20 3d 20 26 22 3b 7e 6c |tes used = &";~l| 00000f80 61 73 74 62 79 74 65 2d 6d 63 6f 64 65 0d 04 1a |astbyte-mcode...| 00000f90 05 f5 0d 04 24 36 f1 8a 31 30 2c 31 32 29 22 58 |....$6..10,12)"X| 00000fa0 20 3d 20 26 22 3b 7e 3f 26 38 30 3b 22 20 22 8a | = &";~?&80;" ".| 00000fb0 32 30 2c 31 32 29 3b 22 59 20 3d 20 26 22 3b 7e |20,12);"Y = &";~| 00000fc0 3f 26 38 31 3b 22 20 22 0d 04 2e 23 62 75 74 74 |?&81;" "...#butt| 00000fd0 6f 6e 3d 3f 64 72 62 20 3a f4 3a 20 64 61 74 61 |on=?drb :.: data| 00000fe0 20 72 65 67 69 73 74 65 72 20 42 0d 04 38 38 e7 | register B..88.| 00000ff0 20 28 62 75 74 74 6f 6e 20 80 20 26 38 30 29 3d | (button . &80)=| 00001000 30 20 f1 8a 32 32 2c 31 37 29 22 52 69 67 68 74 |0 ..22,17)"Right| 00001010 22 20 8b 20 f1 8a 32 32 2c 31 37 29 22 20 20 20 |" . ..22,17)" | 00001020 20 20 22 0d 04 42 3a e7 20 28 62 75 74 74 6f 6e | "..B:. (button| 00001030 20 80 20 26 34 30 29 3d 30 20 f1 8a 31 35 2c 31 | . &40)=0 ..15,1| 00001040 37 29 22 43 65 6e 74 72 65 22 20 8b 20 f1 8a 31 |7)"Centre" . ..1| 00001050 35 2c 31 37 29 22 20 20 20 20 20 20 22 0d 04 4c |5,17)" "..L| 00001060 36 e7 20 28 62 75 74 74 6f 6e 20 80 20 26 32 30 |6. (button . &20| 00001070 29 3d 30 20 f1 8a 31 30 2c 31 37 29 22 4c 65 66 |)=0 ..10,17)"Lef| 00001080 74 22 20 8b 20 f1 8a 31 30 2c 31 37 29 22 20 20 |t" . ..10,17)" | 00001090 20 20 22 0d 04 56 07 fd 20 a3 0d 04 60 12 ef 32 | "..V.. ...`..2| 000010a0 33 2c 31 2c 31 3b 30 3b 30 3b 30 3b 0d 04 6a 0b |3,1,1;0;0;0;..j.| 000010b0 d6 20 6d 63 6f 64 65 0d ff |. mcode..| 000010b9
27-11-88/MOUSE.m0
27-11-88/MOUSE.m1
27-11-88/MOUSE.m2
27-11-88/MOUSE.m4
27-11-88/MOUSE.m5
.