#PIC V1.0 (c)1997 J.Petroglou LIST FILE #file: dh2:IDE/APICforAMINET/APIC/examples/mouse.src #date: Sun Dec 14 20:43:54 1997 #pic : PIC16C54 ADDR CODE SRCLINE SOURCECODE 0000 000001 ;PC mouse adapter for Amiga computers 0000 000002 ; 0000 000003 ; use serial Pc mouse on Amiga Computers without Software driver !! 0000 000004 ; 0000 000005 ; 03.01.96 0000 000006 ; 0000 000007 ;This Program converts the microsoft and the mouse system format to amiga ones, 0000 000008 ;three mouse buttons are supported (mouse system). 0000 000009 ;Only hardware, it`s like an original Amiga mouse 0000 000010 ;The Xtal frequenzy is 11.0592 Mhz, the TXD line from mouse is with a 20K 0000 000011 ;resistor directly with the PIC 16C54 Port connected. Only three other components 0000 000012 ;are needed for the voltage conversion: ICL7660 (voltage converter from Harris 0000 000013 ;semiconductor,INTERSIL) and two capacitors with 10µF. The PCB is about 3*4.5cm. 0000 000014 ;My PC mouse needs -5V on TXD,5V on RTS and ground. 0000 000015 ;The adapter recognizes mouse protocoll changes automatic. I think it`s easy 0000 000016 ;to include the Logitech protokoll but I don`t know it. 0000 000017 ; 0000 000018 ; see our Amiga Pic Tools Home Page: 0000 000019 ; 0000 000020 ; http://linux.rz.fh-hannover.de/~duesterb/ 0000 000021 ; (Pic Simulator, Pic Progger) 0000 000022 ; 0000 000023 ;Dirk Düsterberg, duesterb@unixserv.rz.fh-hannover.de 0000 000024 ; 0000 000025 ;Jahnstr.9 0000 000026 ;31860 Emmerthal 0000 000027 ;Germany 0000 000028 ; 0000 000029 ; 0000 000030 ;thanks to Joannis Petroglou, who made this with his wonderful Tools possibel! 0000 000031 0000 000032 0000 000033 0000 000034 ; Microsoft is a registered trademark of Microsoft Corp. 0000 000035 ; Mouse Systems is registered trademark of MSC Technologies, Inc. 0000 000036 ; Microchip is a registered trademark of Microchip Technology 0000 000037 ; Logitech is a registered trademark too 0000 000038 ; This source is copyrighted to Dirk Düsterberg, no trademark 0000 000039 0000 000040 0000 000041 0000 000042 0000 000043 0000 000044 0000 000045 list p=PIC16C54, r=hex, s=off 0000 000046 01FF 000047 RESET start 0000 000048 0000 000049 0000 000050 CBLOCK 08h 0000 000051 trycnt ;synctrys, which format? 0000 000052 loopcnt ;loop counter 0000 000053 bitcnt ;bit counter 0000 000054 serbuf ;serial buffer 0000 000055 RBbuf ;Port buffer 0000 000056 ENDC 0000 000057 0000 000058 CBLOCK 10h 0000 000059 byte0 ;first received byte 0000 000060 byte1 ;second received byte and byte 4 (mouse system) 0000 000061 byte2 ;third received byte and byte 5 (mouse system) 0000 000062 ENDC 0000 000063 0000 000064 RA = 5 0000 000065 RB = 6 0000 000066 0000 000067 0000 000068 0000 000069 #define RXD RA,1 ;RXD input, bit 1 from Port A 0000 000070 0000 000071 #define r_b RBbuf,2 ;right mouse button 0000 000072 #define m_b RBbuf,4 ;middle mouse button 0000 000073 #define l_b RBbuf,6 ;left mouse button 0000 000074 0000 000075 #define H RBbuf,0 ;Horizontal Pulses 0000 000076 #define HQ RBbuf,5 ;Horizontal Quadrature Pulses 0000 000077 #define V RBbuf,1 ;Vertical Pulses 0000 000078 #define VQ RBbuf,7 ;Vertical Quadrature Pulses 0000 000079 0000 000080 0000 000081 #define c 03,0 0000 000082 #define z 03,2 0000 000083 0000 000084 0000 0C00 000085 start movlw 0 0001 0006 000086 tris RB 0002 000087 0002 0CFF 000088 movlw 0ffh 0003 0005 000089 tris RA 0004 000090 0004 006C 000091 clrf RBbuf ;make butoons unpressed 0005 00EC 000092 decf RBbuf,f 0006 000093 0006 020C 000094 movf RBbuf,w ;use Port buffer to prevent read from Port 0007 0026 000095 movwf RB 0008 000096 0008 0068 000097 clrf trycnt,f 0009 000098 0009 000099 0009 000100 0009 000101 0009 000102 0009 000103 0009 000104 0009 000105 0009 000106 0009 000107 0009 000108 0009 000109 ;this is the routine for the microsoft format (3 bytes with 2 buttons) 0009 000110 0009 000111 0009 000112 0009 0068 000113 micro clrf trycnt,f 000A 0C04 000114 mic movlw .4 000B 0088 000115 subwf trycnt,w 000C 0603 000116 btfsc c 000D 0A48 000117 goto mouse ;more than 3 trys? jump! 000E 000118 000E 0971 000119 call rcb ;receive the first byte 000F 02A8 000120 incf trycnt,f 0010 000121 0010 020B 000122 movf serbuf,w 0011 0FC0 000123 xorlw 11000000b ;invert bit 6 and 7 from working register 0012 0EC0 000124 andlw 11000000b ;clr bit 0 to 5 (buttons and coord.) 0013 0743 000125 btfss z ;skip if w is zero 0014 0A0A 000126 goto mic ;if not zero -> no match 0015 000127 0015 020B 000128 movf serbuf,w ;this is the first received byte 0016 0030 000129 movwf byte0 0017 000130 0017 058C 000131 bsf m_b ;middle button not supported 0018 000132 0018 068B 000133 btfsc serbuf,4 ;mov buttons 0019 044C 000134 bcf r_b 001A 078B 000135 btfss serbuf,4 001B 054C 000136 bsf r_b 001C 000137 001C 06AB 000138 btfsc serbuf,5 001D 04CC 000139 bcf l_b 001E 07AB 000140 btfss serbuf,5 001F 05CC 000141 bsf l_b 0020 000142 0020 0971 000143 call rcb ;receive second byte 0021 000144 0021 000145 0021 0C80 000146 movlw 10000000b 0022 01AB 000147 xorwf serbuf,f ;invert bit 7 from buffer 0023 020B 000148 movf serbuf,w 0024 0EC0 000149 andlw 11000000b ;clr bit 0 to 5 (coord.) 0025 0743 000150 btfss z ;skip if w is zero 0026 0A48 000151 goto mouse ;if not zero -> no match -> mouse format 0027 000152 0027 000153 0027 0071 000154 clrf byte1 0028 000155 0028 0710 000156 btfss byte0,0 ;mov x6 and x7 coord. to byte1 0029 04D1 000157 bcf byte1,6 002A 0610 000158 btfsc byte0,0 002B 05D1 000159 bsf byte1,6 002C 000160 002C 000161 002C 0730 000162 btfss byte0,1 ;mov x6 and x7 coord. to byte1 002D 04F1 000163 bcf byte1,7 002E 0630 000164 btfsc byte0,1 002F 05F1 000165 bsf byte1,7 0030 000166 0030 000167 0030 000168 0030 020B 000169 movf serbuf,w ;set rest of x coord. 0031 0131 000170 iorwf byte1,f 0032 000171 0032 000172 0032 000173 0032 0971 000174 call rcb ;receive third byte 0033 000175 0033 000176 0033 0C80 000177 movlw 10000000b 0034 01AB 000178 xorwf serbuf,f ;invert bit 7 from buffer 0035 020B 000179 movf serbuf,w 0036 0EC0 000180 andlw 11000000b ;clr bit 0 to 5 (coord.) 0037 0743 000181 btfss z ;skip if w is zero 0038 0A48 000182 goto mouse ;if not zero -> no match -> mouse format 0039 000183 0039 0072 000184 clrf byte2 003A 000185 003A 000186 003A 000187 003A 0750 000188 btfss byte0,2 ;mov y6 and y7 coord. to byte2 003B 04D2 000189 bcf byte2,6 003C 0650 000190 btfsc byte0,2 003D 05D2 000191 bsf byte2,6 003E 000192 003E 000193 003E 000194 003E 0770 000195 btfss byte0,3 ;mov y6 and y7 coord. to byte2 003F 04F2 000196 bcf byte2,7 0040 0670 000197 btfsc byte0,3 0041 05F2 000198 bsf byte2,7 0042 000199 0042 000200 0042 000201 0042 020B 000202 movf serbuf,w ;set rest of y coord. 0043 0132 000203 iorwf byte2,f 0044 000204 0044 0272 000205 comf byte2,f ;fix microsoft to mouse protokoll 0045 02B2 000206 incf byte2,f ;(up and down exchanged) 0046 000207 0046 0068 000208 clrf trycnt 0047 0A09 000209 goto micro 0048 000210 0048 000211 0048 000212 0048 000213 ;this is the routine for the mouse system format (5 bytes with 3 buttons) 0048 000214 0048 000215 0048 0C06 000216 mouse movlw .6 0049 0088 000217 subwf trycnt,w 004A 0603 000218 btfsc c 004B 0A09 000219 goto micro ;more than 5 trys? jump micro! 004C 000220 004C 0971 000221 call rcb ;get first of five bytes from serial mouse 004D 000222 004D 02A8 000223 incf trycnt,f ;one more try 004E 000224 004E 000225 ;test format #10000lmr (left, middle, right) 004E 000226 004E 020B 000227 movf serbuf,w 004F 0F80 000228 xorlw 10000000b ;invert bit 7 from working register 0050 0EF8 000229 andlw 11111000b ;clr bit 0 to 2 (buttons) 0051 0743 000230 btfss z ;skip if w is zero 0052 0A48 000231 goto mouse ;if not zero -> no match 0053 000232 0053 020B 000233 movf serbuf,w 0054 0030 000234 movwf byte0 0055 000235 0055 000236 0055 000237 0055 0971 000238 call rcb ;byte1, X-Axis movement data 0056 020B 000239 movf serbuf,w 0057 0031 000240 movwf byte1 0058 000241 0058 0971 000242 call rcb ;byte2, Y-Axis movement data 0059 020B 000243 movf serbuf,w 005A 0032 000244 movwf byte2 005B 000245 005B 0971 000246 call rcb ;byte3, X-Axis movement data 005C 020B 000247 movf serbuf,w 005D 0031 000248 movwf byte1 005E 000249 005E 0971 000250 call rcb ;byte4, Y-Axis movement data 005F 020B 000251 movf serbuf,w 0060 0032 000252 movwf byte2 0061 000253 0061 000254 0061 000255 0061 0710 000256 btfss byte0,0 ;convert to Amiga 0062 044C 000257 bcf r_b 0063 0610 000258 btfsc byte0,0 0064 054C 000259 bsf r_b 0065 000260 0065 000261 0065 0730 000262 btfss byte0,1 0066 048C 000263 bcf m_b 0067 0630 000264 btfsc byte0,1 0068 058C 000265 bsf m_b 0069 000266 0069 000267 0069 0750 000268 btfss byte0,2 006A 04CC 000269 bcf l_b 006B 0650 000270 btfsc byte0,2 006C 05CC 000271 bsf l_b 006D 000272 006D 000273 006D 020C 000274 movf RBbuf,w 006E 0026 000275 movwf RB ;use Port buffer to prevent read from Port 006F 000276 006F 0068 000277 clrf trycnt 0070 000278 0070 0A48 000279 goto mouse 0071 000280 0071 000281 0071 000282 0071 000283 0071 000284 0071 000285 0071 000286 0071 000287 ;receive routine, receive 8bits 0071 000288 ;loop is done until byte is received 0071 000289 0071 000290 0071 000291 0071 000292 0071 0625 000293 rcb btfsc RXD 0072 0A74 000294 goto rcshift ;startbit ? 0073 0A71 000295 goto rcb 0074 000296 0074 0C08 000297 rcshift movlw .8 0075 002A 000298 movwf bitcnt 0076 000299 0076 0982 000300 call whbit ;wait half bit (middle bit position) 0077 000301 0077 098E 000302 r_it call wbit ;wait bit delay 0078 000303 0078 0725 000304 btfss RXD ;move RXD into c 0079 0403 000305 bcf c 007A 0625 000306 btfsc RXD 007B 0503 000307 bsf c 007C 000308 007C 032B 000309 rrf serbuf,f ;rotate c in serbuf 007D 02EA 000310 decfsz bitcnt 007E 0A77 000311 goto r_it ;decrement bit counter (8 bits) 007F 026B 000312 comf serbuf ;invert serbuf (RS232 -> TTL) 0080 0982 000313 call whbit ;wait a half bit to get out from data area 0081 0800 000314 retlw 0 ;back 0082 000315 0082 000316 0082 000317 0082 000318 0082 000319 0082 000320 0082 000321 0082 000322 0082 000323 ;wait routine for one and one half bit for 1200 baud 0082 000324 0082 000325 0082 0C7D 000326 whbit movlw .125 0083 0029 000327 movwf loopcnt ;1200 0084 0000 000328 do_hbit nop 0085 0000 000329 nop 0086 0000 000330 nop 0087 0000 000331 nop 0088 0000 000332 nop 0089 0000 000333 nop 008A 0000 000334 nop 008B 02E9 000335 decfsz loopcnt 008C 0A84 000336 goto do_hbit 008D 0800 000337 retlw 0 008E 000338 008E 000339 008E 000340 008E 000341 008E 000342 008E 000343 ;this routine is one bit long, it converts the axe counter to a quadrature 008E 000344 ;modulation, every change on V,VQ,H or HQ means a mouse move 008E 000345 008E 000346 008E 0C2D 000347 wbit movlw .45 008F 0029 000348 movwf loopcnt ;quad mod is done while bit waiting 0090 000349 0090 0211 000350 x_axe movf byte1,w 0091 0643 000351 btfsc z 0092 0AA8 000352 goto x_axe0 ;byte1 = 0, nothing to do 0093 06F1 000353 btfsc byte1,7 0094 0ABB 000354 goto _right ;jump if bit 0095 0000 000355 nop 0096 0000 000356 nop 0097 0000 000357 nop 0098 0000 000358 nop 0099 0000 000359 nop 009A 00F1 000360 left decf byte1,f ;decrement byte 1 009B 060C 000361 btfsc H 009C 0AA1 000362 goto leftx1 ;jmp to x1 if H set 009D 06AC 000363 btfsc HQ 009E 0AA6 000364 goto left10 009F 050C 000365 bsf H ;set H if H and HQ clear 00A0 0AB6 000366 goto lback1 00A1 06AC 000367 leftx1 btfsc HQ 00A2 040C 000368 bcf H ;clr H if H set and HQ set 00A3 07AC 000369 btfss HQ 00A4 05AC 000370 bsf HQ ;set HQ if H set and HQ clear 00A5 0AB8 000371 goto lback3 00A6 04AC 000372 left10 bcf HQ ;clear HQ if H clear and HQ set 00A7 0AB7 000373 goto lback2 00A8 0000 000374 x_axe0 nop 00A9 0000 000375 nop 00AA 0000 000376 nop 00AB 0000 000377 nop 00AC 0000 000378 nop 00AD 0000 000379 nop 00AE 0000 000380 nop 00AF 0000 000381 nop 00B0 0000 000382 nop 00B1 0000 000383 nop 00B2 0000 000384 nop 00B3 0000 000385 nop 00B4 0000 000386 nop 00B5 0000 000387 nop 00B6 0000 000388 lback1 nop 00B7 0000 000389 lback2 nop 00B8 020C 000390 lback3 movf RBbuf,w 00B9 0026 000391 movwf RB ;use Port buffer to prevent read from Port 00BA 0AD3 000392 goto y_axe 00BB 000393 00BB 0271 000394 _right comf byte1,f ;negate byte1 00BC 02B1 000395 incf byte1,f 00BD 000396 00BD 0000 000397 nop 00BE 0000 000398 nop 00BF 000399 00BF 00F1 000400 right decf byte1,f 00C0 06AC 000401 btfsc HQ 00C1 0AC6 000402 goto right1x ;jmp to 1x if HQ set 00C2 060C 000403 btfsc H 00C3 0ACB 000404 goto right01 00C4 05AC 000405 bsf HQ ;set HQ if H and HQ clear 00C5 0ACD 000406 goto rback1 00C6 060C 000407 right1x btfsc H 00C7 04AC 000408 bcf HQ ;clrb H if H and HQ set 00C8 070C 000409 btfss H 00C9 050C 000410 bsf H ;setb H if H clear and HQ set 00CA 0ACF 000411 goto rback3 00CB 040C 000412 right01 bcf H ;clr H if HQ clear and H set 00CC 0ACE 000413 goto rback2 00CD 000414 00CD 0000 000415 rback1 nop 00CE 0000 000416 rback2 nop 00CF 020C 000417 rback3 movf RBbuf,w 00D0 0026 000418 movwf RB ;use Port buffer to prevent read from Port 00D1 0271 000419 comf byte1,f 00D2 02B1 000420 incf byte1,f 00D3 000421 00D3 000422 00D3 000423 00D3 000424 00D3 0212 000425 y_axe movf byte2,w 00D4 0643 000426 btfsc z 00D5 0AEB 000427 goto y_axe0 ;byte2 = 0, nothing to do 00D6 06F2 000428 btfsc byte2,7 00D7 0AFE 000429 goto _up ;jump if bit 00D8 0000 000430 nop 00D9 0000 000431 nop 00DA 0000 000432 nop 00DB 0000 000433 nop 00DC 0000 000434 nop 00DD 00F2 000435 down decf byte2,f 00DE 06EC 000436 btfsc VQ 00DF 0AE4 000437 goto down1x ;jmp to 1x if VQ set 00E0 062C 000438 btfsc V 00E1 0AE9 000439 goto down01 00E2 05EC 000440 bsf VQ ;set VQ if V and VQ clear 00E3 0AF9 000441 goto dback1 00E4 062C 000442 down1x btfsc V 00E5 04EC 000443 bcf VQ ;clrb V if V and VQ set 00E6 072C 000444 btfss V 00E7 052C 000445 bsf V ;setb V if V clear and VQ set 00E8 0AFB 000446 goto dback3 00E9 042C 000447 down01 bcf V ;clr V if VQ clear and V set 00EA 0AFA 000448 goto dback2 00EB 0000 000449 y_axe0 nop 00EC 0000 000450 nop 00ED 0000 000451 nop 00EE 0000 000452 nop 00EF 0000 000453 nop 00F0 0000 000454 nop 00F1 0000 000455 nop 00F2 0000 000456 nop 00F3 0000 000457 nop 00F4 0000 000458 nop 00F5 0000 000459 nop 00F6 0000 000460 nop 00F7 0000 000461 nop 00F8 0000 000462 nop 00F9 0000 000463 dback1 nop 00FA 0000 000464 dback2 nop 00FB 020C 000465 dback3 movf RBbuf,w 00FC 0026 000466 movwf RB ;use Port buffer to prevent read from Port 00FD 0B16 000467 goto done 00FE 000468 00FE 0272 000469 _up comf byte2,f 00FF 02B2 000470 incf byte2,f 0100 0000 000471 nop 0101 0000 000472 nop 0102 000473 0102 00F2 000474 up decf byte2,f 0103 062C 000475 btfsc V 0104 0B09 000476 goto up_x1 ;jmp to x1 if V set 0105 06EC 000477 btfsc VQ 0106 0B0E 000478 goto up_10 0107 052C 000479 bsf V ;set V if V and VQ clear 0108 0B10 000480 goto uback1 0109 06EC 000481 up_x1 btfsc VQ 010A 042C 000482 bcf V ;clr V if V set and VQ set 010B 07EC 000483 btfss VQ 010C 05EC 000484 bsf VQ ;set VQ if V set and VQ clear 010D 0B12 000485 goto uback3 010E 04EC 000486 up_10 bcf VQ ;clear VQ if V clear and VQ set 010F 0B11 000487 goto uback2 0110 0000 000488 uback1 nop 0111 0000 000489 uback2 nop 0112 020C 000490 uback3 movf RBbuf,w 0113 0026 000491 movwf RB ;use Port buffer to prevent read from Port 0114 0272 000492 comf byte2,f 0115 02B2 000493 incf byte2,f 0116 000494 0116 000495 0116 000496 0116 02E9 000497 done decfsz loopcnt 0117 0A90 000498 goto x_axe 0118 0800 000499 retlw 0 Used Symbols ----------------------------------------- trycnt 00000008 loopcnt 00000009 bitcnt 0000000A serbuf 0000000B RBbuf 0000000C byte0 00000010 byte1 00000011 byte2 00000012 RA 00000005 RB 00000006 start 00000000 micro 00000009 mic 0000000A mouse 00000048 rcb 00000071 rcshift 00000074 r_it 00000077 whbit 00000082 do_hbit 00000084 wbit 0000008E x_axe 00000090 left 0000009A leftx1 000000A1 left10 000000A6 x_axe0 000000A8 lback1 000000B6 lback2 000000B7 lback3 000000B8 _right 000000BB right 000000BF right1x 000000C6 right01 000000CB rback1 000000CD rback2 000000CE rback3 000000CF y_axe 000000D3 down 000000DD down1x 000000E4 down01 000000E9 y_axe0 000000EB dback1 000000F9 dback2 000000FA dback3 000000FB _up 000000FE up 00000102 up_x1 00000109 up_10 0000010E uback1 00000110 uback2 00000111 uback3 00000112 done 00000116 Used Defines ----------------------------------------- c 03,0 H RBbuf,0 V RBbuf,1 z 03,2 HQ RBbuf,5 VQ RBbuf,7 l_b RBbuf,6 m_b RBbuf,4 RXD RA,1 r_b RBbuf,2 PROGRAM MEMORY USAGE TABLE: '-' = not used 'X' = used 0000 : XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX 0040 : XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX 0080 : XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX 00C0 : XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX 0100 : XXXXXXXXXXXXXXXX XXXXXXXXX------- ---------------- ---------------- 0140 : ---------------- ---------------- ---------------- ---------------- 0180 : ---------------- ---------------- ---------------- ---------------- 01C0 : ---------------- ---------------- ---------------- ---------------- Program Memory Words Used: 0281 Program Memory Words Free: 0231 Errors: 0