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Commit | Line | Data |
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9c15f366 L |
1 | ; Z80 Interpreter. |
2 | ; This is part of the Z80-CP/M emulator written by Sprite_tm. | |
3 | ; The Z80-specific instructions themselves actually aren't | |
4 | ; implemented yet, making this more of an i8080 emulator. | |
5 | ||
fdcfcd44 | 6 | ; Copyright (C) 2010 Sprite_tm |
9c15f366 L |
7 | ; Copyright (C) 2010 Leo C. |
8 | ||
9 | ; This file is part of avrcpm. | |
fdcfcd44 | 10 | ; |
9c15f366 L |
11 | ; avrcpm is free software: you can redistribute it and/or modify it |
12 | ; under the terms of the GNU General Public License as published by | |
fdcfcd44 L |
13 | ; the Free Software Foundation, either version 3 of the License, or |
14 | ; (at your option) any later version. | |
15 | ; | |
9c15f366 | 16 | ; avrcpm is distributed in the hope that it will be useful, |
fdcfcd44 L |
17 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ; GNU General Public License for more details. | |
20 | ; | |
21 | ; You should have received a copy of the GNU General Public License | |
9c15f366 | 22 | ; along with avrcpm. If not, see <http://www.gnu.org/licenses/>. |
78700514 L |
23 | ; |
24 | ; $Id$ | |
25 | ; | |
fdcfcd44 | 26 | |
9c15f366 | 27 | .dseg |
66faee4c | 28 | |
9c15f366 L |
29 | z_b: .byte 1 |
30 | z_c: .byte 1 | |
31 | z_d: .byte 1 | |
32 | z_e: .byte 1 | |
33 | z_h: .byte 1 | |
34 | z_l: .byte 1 | |
fdcfcd44 | 35 | |
9c15f366 | 36 | .cseg |
fdcfcd44 L |
37 | |
38 | ;Init z80 | |
9c15f366 L |
39 | z80_init: |
40 | ldi z_pcl,low (IPLADDR) | |
41 | ldi z_pch,high(IPLADDR) | |
fdcfcd44 | 42 | |
db568140 | 43 | cbi flags,trace |
9c15f366 L |
44 | printnewline |
45 | printstring "Ok, CPU is live!" | |
46 | printnewline | |
fdcfcd44 L |
47 | |
48 | main: | |
9c15f366 | 49 | .if INS_DEBUG |
db568140 | 50 | cbi flags,trace |
9c15f366 | 51 | cpi z_pch,DBG_TRACE_BOTTOM |
fdcfcd44 | 52 | brlo notraceon |
9c15f366 | 53 | cpi z_pch,DBG_TRACE_TOP |
fdcfcd44 | 54 | brsh notraceon |
db568140 | 55 | sbi flags,trace |
fdcfcd44 | 56 | notraceon: |
9c15f366 | 57 | .endif |
fdcfcd44 | 58 | |
fdcfcd44 | 59 | .if PRINT_PC |
9c15f366 | 60 | cpi z_pch,DBG_TRACE_BOTTOM |
fdcfcd44 | 61 | brlo noprintpc |
9c15f366 | 62 | cpi z_pch,DBG_TRACE_TOP |
fdcfcd44 L |
63 | brsh noprintpc |
64 | ||
9c15f366 L |
65 | printnewline |
66 | printstring "PC=" | |
846ffdc9 L |
67 | movw temp,z_pcl |
68 | rcall printhexw | |
9c15f366 | 69 | printstring " " |
fdcfcd44 L |
70 | noprintpc: |
71 | .endif | |
72 | ||
73 | ; *** Stage 1: Fetch next opcode | |
9c15f366 | 74 | mem_read_s z_pc |
fdcfcd44 L |
75 | |
76 | ||
77 | .if INS_DEBUG | |
db568140 L |
78 | sbis flags,trace |
79 | rjmp notrace1 | |
9c15f366 L |
80 | printnewline |
81 | printstring "PC=" | |
fdcfcd44 | 82 | push temp |
846ffdc9 L |
83 | movw temp,z_pcl |
84 | rcall printhexw | |
fdcfcd44 | 85 | pop temp |
9c15f366 | 86 | printstring ", opcode=" |
fdcfcd44 L |
87 | rcall printhex |
88 | notrace1: | |
89 | .endif | |
8a4df3af | 90 | adiw z_pcl,1 |
fdcfcd44 L |
91 | |
92 | ; *** Stage 2: Decode it using the ins_table. | |
fdcfcd44 | 93 | ldi zh,high(inst_table*2) |
99ed7199 | 94 | mov zl,temp |
fdcfcd44 | 95 | add zl,temp |
99ed7199 | 96 | adc zh,_0 |
fdcfcd44 L |
97 | lpm insdecl,Z+ |
98 | lpm insdech,Z | |
99 | ||
100 | .if INS_DEBUG | |
db568140 L |
101 | sbis flags,trace |
102 | rjmp notrace2 | |
9c15f366 L |
103 | printstring ", decoded=" |
104 | movw temp,insdecl | |
105 | rcall printhexw | |
fdcfcd44 L |
106 | notrace2: |
107 | .endif | |
108 | ||
109 | ; *** Stage 3: Fetch operand. Use the fetch jumptable for this. | |
110 | mov temp,insdecl | |
111 | andi temp,0x1F | |
fdcfcd44 | 112 | breq nofetch |
99ed7199 L |
113 | ldi zl,low(fetchjumps) |
114 | ldi zh,high(fetchjumps) | |
fdcfcd44 | 115 | add zl,temp |
99ed7199 | 116 | adc zh,_0 |
fdcfcd44 L |
117 | icall |
118 | ||
119 | .if INS_DEBUG | |
db568140 L |
120 | sbis flags,trace |
121 | rjmp notrace3 | |
9c15f366 L |
122 | printstring " pre: op=" |
123 | movw temp,opl | |
124 | rcall printhexw | |
fdcfcd44 | 125 | notrace3: |
9c15f366 | 126 | rjmp nonofetch |
fdcfcd44 L |
127 | .endif |
128 | ||
129 | nofetch: | |
9c15f366 L |
130 | .if INS_DEBUG |
131 | sbis flags,trace | |
132 | rjmp nonofetch | |
133 | printstring " " | |
134 | ||
135 | nonofetch: | |
136 | .endif | |
fdcfcd44 L |
137 | ; *** Stage 4: Execute operation :) Use the op jumptable for this. |
138 | mov temp,insdech | |
139 | andi temp,0xFC | |
fdcfcd44 | 140 | breq nooper |
99ed7199 L |
141 | lsr temp |
142 | lsr temp | |
143 | ldi zl,low(opjumps) | |
144 | ldi zh,high(opjumps) | |
fdcfcd44 | 145 | add zl,temp |
99ed7199 | 146 | adc zh,_0 |
fdcfcd44 L |
147 | icall |
148 | ||
149 | .if INS_DEBUG | |
db568140 L |
150 | sbis flags,trace |
151 | rjmp notrace4 | |
9c15f366 L |
152 | printstring " post: op=" |
153 | movw temp,opl | |
154 | rcall printhexw | |
fdcfcd44 | 155 | notrace4: |
9c15f366 | 156 | rjmp nonooper |
fdcfcd44 L |
157 | .endif |
158 | ||
159 | nooper: | |
9c15f366 L |
160 | .if INS_DEBUG |
161 | sbis flags,trace | |
162 | rjmp nonooper | |
163 | printstring " " | |
164 | ||
165 | nonooper: | |
166 | .endif | |
fdcfcd44 L |
167 | ; *** Stage 5: Store operand. Use the store jumptable for this. |
168 | swap insdecl | |
169 | swap insdech | |
db568140 | 170 | movw temp,insdecl |
fdcfcd44 | 171 | andi temp,0x0E |
db568140 L |
172 | andi temp2,0x30 |
173 | or temp,temp2 | |
fdcfcd44 | 174 | breq nostore |
99ed7199 L |
175 | lsr temp |
176 | ldi zl,low(storejumps) | |
177 | ldi zh,high(storejumps) | |
fdcfcd44 | 178 | add zl,temp |
99ed7199 | 179 | adc zh,_0 |
fdcfcd44 L |
180 | icall |
181 | ||
182 | .if INS_DEBUG | |
db568140 L |
183 | sbis flags,trace |
184 | rjmp notrace5 | |
9c15f366 | 185 | printstring " stored " |
fdcfcd44 L |
186 | notrace5: |
187 | .endif | |
188 | ||
189 | nostore: | |
fdcfcd44 L |
190 | ;All done. Neeeext! |
191 | rjmp main | |
192 | ||
37617bd8 | 193 | ; -------------------------------------------------------------- |
fdcfcd44 | 194 | |
fdcfcd44 L |
195 | ; ------------ Fetch phase stuff ----------------- |
196 | ||
197 | .equ FETCH_NOP = (0<<0) | |
198 | .equ FETCH_A = (1<<0) | |
199 | .equ FETCH_B = (2<<0) | |
200 | .equ FETCH_C = (3<<0) | |
201 | .equ FETCH_D = (4<<0) | |
202 | .equ FETCH_E = (5<<0) | |
203 | .equ FETCH_H = (6<<0) | |
204 | .equ FETCH_L = (7<<0) | |
205 | .equ FETCH_AF = (8<<0) | |
206 | .equ FETCH_BC = (9<<0) | |
207 | .equ FETCH_DE = (10<<0) | |
208 | .equ FETCH_HL = (11<<0) | |
209 | .equ FETCH_SP = (12<<0) | |
210 | .equ FETCH_MBC = (13<<0) | |
211 | .equ FETCH_MDE = (14<<0) | |
212 | .equ FETCH_MHL = (15<<0) | |
213 | .equ FETCH_MSP = (16<<0) | |
214 | .equ FETCH_DIR8 = (17<<0) | |
215 | .equ FETCH_DIR16= (18<<0) | |
216 | .equ FETCH_RST = (19<<0) | |
217 | ||
218 | ||
219 | ;Jump table for fetch routines. Make sure to keep this in sync with the .equs! | |
220 | fetchjumps: | |
99ed7199 L |
221 | rjmp do_fetch_nop |
222 | rjmp do_fetch_a | |
223 | rjmp do_fetch_b | |
224 | rjmp do_fetch_c | |
225 | rjmp do_fetch_d | |
226 | rjmp do_fetch_e | |
227 | rjmp do_fetch_h | |
228 | rjmp do_fetch_l | |
229 | rjmp do_fetch_af | |
230 | rjmp do_fetch_bc | |
231 | rjmp do_fetch_de | |
232 | rjmp do_fetch_hl | |
233 | rjmp do_fetch_sp | |
234 | rjmp do_fetch_mbc | |
235 | rjmp do_fetch_mde | |
236 | rjmp do_fetch_mhl | |
237 | rjmp do_fetch_msp | |
238 | rjmp do_fetch_dir8 | |
239 | rjmp do_fetch_dir16 | |
240 | rjmp do_fetch_rst | |
fdcfcd44 L |
241 | |
242 | do_fetch_nop: | |
243 | ret | |
244 | ||
245 | do_fetch_a: | |
246 | mov opl,z_a | |
247 | ret | |
248 | ||
249 | do_fetch_b: | |
9c15f366 | 250 | lds opl,z_b |
fdcfcd44 L |
251 | ret |
252 | ||
253 | do_fetch_c: | |
9c15f366 | 254 | lds opl,z_c |
fdcfcd44 L |
255 | ret |
256 | ||
257 | do_fetch_d: | |
9c15f366 | 258 | lds opl,z_d |
fdcfcd44 L |
259 | ret |
260 | ||
261 | do_fetch_e: | |
9c15f366 | 262 | lds opl,z_e |
fdcfcd44 L |
263 | ret |
264 | ||
265 | do_fetch_h: | |
9c15f366 | 266 | lds opl,z_h |
fdcfcd44 L |
267 | ret |
268 | ||
269 | do_fetch_l: | |
9c15f366 | 270 | lds opl,z_l |
fdcfcd44 L |
271 | ret |
272 | ||
273 | do_fetch_af: | |
274 | mov opl,z_flags | |
275 | mov oph,z_a | |
fdcfcd44 L |
276 | ret |
277 | ||
278 | do_fetch_bc: | |
9c15f366 L |
279 | lds opl,z_c |
280 | lds oph,z_b | |
fdcfcd44 L |
281 | ret |
282 | ||
283 | do_fetch_de: | |
9c15f366 L |
284 | lds opl,z_e |
285 | lds oph,z_d | |
fdcfcd44 L |
286 | ret |
287 | ||
288 | do_fetch_hl: | |
9c15f366 L |
289 | lds opl,z_l |
290 | lds oph,z_h | |
fdcfcd44 L |
291 | ret |
292 | ||
293 | do_fetch_sp: | |
99ed7199 | 294 | movw opl,z_spl |
fdcfcd44 L |
295 | ret |
296 | ||
297 | do_fetch_mbc: | |
9c15f366 L |
298 | lds xh,z_b |
299 | lds xl,z_c | |
f1deeee3 | 300 | mem_read_d z_a |
fdcfcd44 L |
301 | ret |
302 | ||
303 | do_fetch_mde: | |
9c15f366 L |
304 | lds xh,z_d |
305 | lds xl,z_e | |
f1deeee3 | 306 | mem_read_d z_a |
fdcfcd44 L |
307 | ret |
308 | ||
309 | do_fetch_mhl: | |
9c15f366 L |
310 | lds xh,z_h |
311 | lds xl,z_l | |
312 | mem_read_d opl | |
fdcfcd44 L |
313 | ret |
314 | ||
315 | do_fetch_msp: | |
9c15f366 L |
316 | movw x,z_spl |
317 | mem_read_d opl | |
318 | adiw x,1 | |
319 | mem_read_d oph | |
fdcfcd44 L |
320 | ret |
321 | ||
322 | do_fetch_dir8: | |
9c15f366 | 323 | mem_read_ds opl, z_pc |
fdcfcd44 | 324 | adiw z_pcl,1 |
fdcfcd44 L |
325 | ret |
326 | ||
327 | do_fetch_dir16: | |
9c15f366 L |
328 | mem_read_ds opl, z_pc |
329 | adiw z_pcl,1 | |
330 | mem_read_ds oph, z_pc | |
331 | adiw z_pcl,1 | |
fdcfcd44 L |
332 | ret |
333 | ||
334 | do_fetch_rst: | |
9c15f366 L |
335 | movw x,z_pcl |
336 | sbiw x,1 | |
337 | mem_read_d opl | |
338 | andi opl,0x38 | |
fdcfcd44 | 339 | ldi oph,0 |
fdcfcd44 L |
340 | ret |
341 | ||
fdcfcd44 L |
342 | ; ------------ Store phase stuff ----------------- |
343 | ||
344 | .equ STORE_NOP = (0<<5) | |
345 | .equ STORE_A = (1<<5) | |
346 | .equ STORE_B = (2<<5) | |
347 | .equ STORE_C = (3<<5) | |
348 | .equ STORE_D = (4<<5) | |
349 | .equ STORE_E = (5<<5) | |
350 | .equ STORE_H = (6<<5) | |
351 | .equ STORE_L = (7<<5) | |
352 | .equ STORE_AF = (8<<5) | |
353 | .equ STORE_BC = (9<<5) | |
354 | .equ STORE_DE = (10<<5) | |
355 | .equ STORE_HL = (11<<5) | |
356 | .equ STORE_SP = (12<<5) | |
357 | .equ STORE_PC = (13<<5) | |
358 | .equ STORE_MBC = (14<<5) | |
359 | .equ STORE_MDE = (15<<5) | |
360 | .equ STORE_MHL = (16<<5) | |
361 | .equ STORE_MSP = (17<<5) | |
362 | .equ STORE_RET = (18<<5) | |
363 | .equ STORE_CALL = (19<<5) | |
364 | .equ STORE_AM = (20<<5) | |
365 | ||
366 | ;Jump table for store routines. Make sure to keep this in sync with the .equs! | |
367 | storejumps: | |
99ed7199 L |
368 | rjmp do_store_nop |
369 | rjmp do_store_a | |
370 | rjmp do_store_b | |
371 | rjmp do_store_c | |
372 | rjmp do_store_d | |
373 | rjmp do_store_e | |
374 | rjmp do_store_h | |
375 | rjmp do_store_l | |
376 | rjmp do_store_af | |
377 | rjmp do_store_bc | |
378 | rjmp do_store_de | |
379 | rjmp do_store_hl | |
380 | rjmp do_store_sp | |
381 | rjmp do_store_pc | |
382 | rjmp do_store_mbc | |
383 | rjmp do_store_mde | |
384 | rjmp do_store_mhl | |
385 | rjmp do_store_msp | |
386 | rjmp do_store_ret | |
387 | rjmp do_store_call | |
388 | rjmp do_store_am | |
fdcfcd44 L |
389 | |
390 | ||
391 | do_store_nop: | |
392 | ret | |
393 | ||
394 | do_store_a: | |
395 | mov z_a,opl | |
396 | ret | |
397 | ||
398 | do_store_b: | |
9c15f366 | 399 | sts z_b,opl |
fdcfcd44 L |
400 | ret |
401 | ||
402 | do_store_c: | |
9c15f366 | 403 | sts z_c,opl |
fdcfcd44 L |
404 | ret |
405 | ||
406 | do_store_d: | |
9c15f366 | 407 | sts z_d,opl |
fdcfcd44 L |
408 | ret |
409 | ||
410 | do_store_e: | |
9c15f366 | 411 | sts z_e,opl |
fdcfcd44 L |
412 | ret |
413 | ||
414 | do_store_h: | |
9c15f366 | 415 | sts z_h,opl |
fdcfcd44 L |
416 | ret |
417 | ||
418 | do_store_l: | |
9c15f366 | 419 | sts z_l,opl |
fdcfcd44 L |
420 | ret |
421 | ||
422 | do_store_af: | |
423 | mov z_a,oph | |
424 | mov z_flags,opl | |
fdcfcd44 L |
425 | ret |
426 | ||
427 | do_store_bc: | |
9c15f366 L |
428 | sts z_b,oph |
429 | sts z_c,opl | |
fdcfcd44 L |
430 | ret |
431 | ||
432 | do_store_de: | |
9c15f366 L |
433 | sts z_d,oph |
434 | sts z_e,opl | |
fdcfcd44 L |
435 | ret |
436 | ||
437 | do_store_hl: | |
9c15f366 L |
438 | sts z_h,oph |
439 | sts z_l,opl | |
fdcfcd44 L |
440 | ret |
441 | ||
442 | do_store_mbc: | |
9c15f366 L |
443 | lds xh,z_b |
444 | lds xl,z_c | |
f1deeee3 | 445 | mem_write_s z_a |
fdcfcd44 L |
446 | ret |
447 | ||
448 | do_store_mde: | |
9c15f366 L |
449 | lds xh,z_d |
450 | lds xl,z_e | |
f1deeee3 | 451 | mem_write_s z_a |
fdcfcd44 L |
452 | ret |
453 | ||
454 | do_store_mhl: | |
9c15f366 L |
455 | lds xh,z_h |
456 | lds xl,z_l | |
457 | mem_write_s opl | |
fdcfcd44 L |
458 | ret |
459 | ||
460 | do_store_msp: | |
9c15f366 L |
461 | movw xl,z_spl |
462 | mem_write_s opl | |
78700514 | 463 | adiw xl,1 |
9c15f366 | 464 | mem_write_s oph |
fdcfcd44 L |
465 | ret |
466 | ||
467 | do_store_sp: | |
99ed7199 | 468 | movw z_spl,opl |
fdcfcd44 L |
469 | ret |
470 | ||
471 | do_store_pc: | |
99ed7199 | 472 | movw z_pcl,opl |
fdcfcd44 L |
473 | ret |
474 | ||
475 | do_store_ret: | |
9c15f366 L |
476 | movw x,z_spl |
477 | mem_read_d z_pcl | |
478 | adiw x,1 | |
479 | mem_read_d z_pch | |
480 | adiw x,1 | |
481 | movw z_spl,x | |
482 | ||
483 | .if STACK_DBG | |
484 | printnewline | |
485 | printstring "Stack pop " | |
486 | movw temp,z_pcl | |
487 | rcall printhexw | |
488 | printstring ", SP is now " | |
489 | movw temp,z_spl | |
490 | rcall printhexw | |
491 | printstring ". " | |
492 | .endif | |
fdcfcd44 L |
493 | ret |
494 | ||
495 | do_store_call: | |
9c15f366 L |
496 | movw xl,z_spl |
497 | sbiw x,1 | |
498 | mem_write_s z_pch | |
499 | sbiw x,1 | |
500 | mem_write_s z_pcl | |
501 | movw z_spl,xl | |
502 | ||
503 | .if STACK_DBG | |
504 | printnewline | |
505 | printstring "Stack push " | |
506 | movw temp,z_pcl | |
507 | rcall printhexw | |
508 | printstring ", SP is now " | |
509 | movw temp,z_spl | |
510 | rcall printhexw | |
511 | printstring ". " | |
512 | .endif | |
513 | movw z_pcl,opl | |
fdcfcd44 L |
514 | ret |
515 | ||
9c15f366 | 516 | |
fdcfcd44 | 517 | do_store_am: |
9c15f366 | 518 | mem_write_ds op, z_a |
fdcfcd44 L |
519 | ret |
520 | ||
521 | ||
522 | ; ------------ Operation phase stuff ----------------- | |
523 | ||
524 | ||
f1deeee3 L |
525 | .equ OP_NOP = (0<<10) |
526 | .equ OP_INC = (1<<10) | |
527 | .equ OP_DEC = (2<<10) | |
fdcfcd44 L |
528 | .equ OP_INC16 = (3<<10) |
529 | .equ OP_DEC16 = (4<<10) | |
f1deeee3 L |
530 | .equ OP_RLCA = (5<<10) |
531 | .equ OP_RRCA = (6<<10) | |
532 | .equ OP_RRA = (7<<10) | |
533 | .equ OP_RLA = (8<<10) | |
fdcfcd44 L |
534 | .equ OP_ADDA = (9<<10) |
535 | .equ OP_ADCA = (10<<10) | |
536 | .equ OP_SUBFA = (11<<10) | |
537 | .equ OP_SBCFA = (12<<10) | |
538 | .equ OP_ANDA = (13<<10) | |
f1deeee3 | 539 | .equ OP_ORA = (14<<10) |
fdcfcd44 L |
540 | .equ OP_XORA = (15<<10) |
541 | .equ OP_ADDHL = (16<<10) | |
542 | .equ OP_STHL = (17<<10) ;store HL in fetched address | |
543 | .equ OP_RMEM16 = (18<<10) ;read mem at fetched address | |
544 | .equ OP_RMEM8 = (19<<10) ;read mem at fetched address | |
f1deeee3 L |
545 | .equ OP_DA = (20<<10) |
546 | .equ OP_SCF = (21<<10) | |
547 | .equ OP_CPL = (22<<10) | |
548 | .equ OP_CCF = (23<<10) | |
fdcfcd44 L |
549 | .equ OP_POP16 = (24<<10) |
550 | .equ OP_PUSH16 = (25<<10) | |
551 | .equ OP_IFNZ = (26<<10) | |
f1deeee3 | 552 | .equ OP_IFZ = (27<<10) |
fdcfcd44 L |
553 | .equ OP_IFNC = (28<<10) |
554 | .equ OP_IFC = (29<<10) | |
555 | .equ OP_IFPO = (30<<10) | |
556 | .equ OP_IFPE = (31<<10) | |
557 | .equ OP_IFP = (32<<10) | |
558 | .equ OP_IFM = (33<<10) | |
559 | .equ OP_OUTA = (34<<10) | |
560 | .equ OP_IN = (35<<10) | |
561 | .equ OP_EXHL = (36<<10) | |
562 | .equ OP_DI = (37<<10) | |
563 | .equ OP_EI = (38<<10) | |
564 | .equ OP_INV = (39<<10) | |
1a1d6a78 | 565 | .equ OP_CPFA = (40<<10) |
d305f8e4 L |
566 | .equ OP_INCA = (41<<10) |
567 | .equ OP_DECA = (42<<10) | |
fdcfcd44 L |
568 | |
569 | opjumps: | |
99ed7199 L |
570 | rjmp do_op_nop |
571 | rjmp do_op_inc | |
572 | rjmp do_op_dec | |
573 | rjmp do_op_inc16 | |
574 | rjmp do_op_dec16 | |
f1deeee3 L |
575 | rjmp do_op_rlca |
576 | rjmp do_op_rrca | |
577 | rjmp do_op_rra | |
578 | rjmp do_op_rla | |
99ed7199 L |
579 | rjmp do_op_adda |
580 | rjmp do_op_adca | |
581 | rjmp do_op_subfa | |
582 | rjmp do_op_sbcfa | |
583 | rjmp do_op_anda | |
584 | rjmp do_op_ora | |
585 | rjmp do_op_xora | |
586 | rjmp do_op_addhl | |
587 | rjmp do_op_sthl | |
588 | rjmp do_op_rmem16 | |
589 | rjmp do_op_rmem8 | |
590 | rjmp do_op_da | |
591 | rjmp do_op_scf | |
592 | rjmp do_op_cpl | |
593 | rjmp do_op_ccf | |
594 | rjmp do_op_pop16 | |
595 | rjmp do_op_push16 | |
596 | rjmp do_op_ifnz | |
597 | rjmp do_op_ifz | |
598 | rjmp do_op_ifnc | |
599 | rjmp do_op_ifc | |
600 | rjmp do_op_ifpo | |
601 | rjmp do_op_ifpe | |
602 | rjmp do_op_ifp | |
603 | rjmp do_op_ifm | |
604 | rjmp do_op_outa | |
605 | rjmp do_op_in | |
606 | rjmp do_op_exhl | |
607 | rjmp do_op_di | |
608 | rjmp do_op_ei | |
609 | rjmp do_op_inv | |
1a1d6a78 | 610 | rjmp do_op_cpfa |
d305f8e4 L |
611 | rjmp do_op_inca |
612 | rjmp do_op_deca | |
fdcfcd44 L |
613 | |
614 | ||
3c3744f1 L |
615 | ;---------------------------------------------------------------- |
616 | ;| | | |
617 | ;| Zilog | | |
618 | ;| | | |
619 | ;| ZZZZZZZ 88888 000 | | |
620 | ;| Z 8 8 0 0 | | |
621 | ;| Z 8 8 0 0 0 | | |
622 | ;| Z 88888 0 0 0 | | |
623 | ;| Z 8 8 0 0 0 | | |
624 | ;| Z 8 8 0 0 | | |
625 | ;| ZZZZZZZ 88888 000 | | |
626 | ;| | | |
627 | ;| Z80 MICROPROCESSOR Instruction Set Summary | | |
628 | ;| | | |
629 | ;---------------------------------------------------------------- | |
630 | ;---------------------------------------------------------------- | |
631 | ;|Mnemonic |SZHPNC|Description |Notes | | |
632 | ;|----------+------+---------------------+----------------------| | |
633 | ;|ADC A,s |***V0*|Add with Carry |A=A+s+CY | | |
634 | ;|ADC HL,ss |**?V0*|Add with Carry |HL=HL+ss+CY | | |
635 | ;|ADD A,s |***V0*|Add |A=A+s | | |
636 | ;|ADD HL,ss |--?-0*|Add |HL=HL+ss | | |
637 | ;|ADD IX,pp |--?-0*|Add |IX=IX+pp | | |
638 | ;|ADD IY,rr |--?-0*|Add |IY=IY+rr | | |
37617bd8 | 639 | ;|AND s |**1P00|Logical AND |A=A&s | |
3c3744f1 L |
640 | ;|BIT b,m |?*1?0-|Test Bit |m&{2^b} | |
641 | ;|CALL cc,nn|------|Conditional Call |If cc CALL | | |
642 | ;|CALL nn |------|Unconditional Call |-[SP]=PC,PC=nn | | |
643 | ;|CCF |--?-0*|Complement Carry Flag|CY=~CY | | |
644 | ;|CP s |***V1*|Compare |A-s | | |
645 | ;|CPD |****1-|Compare and Decrement|A-[HL],HL=HL-1,BC=BC-1| | |
646 | ;|CPDR |****1-|Compare, Dec., Repeat|CPD till A=[HL]or BC=0| | |
647 | ;|CPI |****1-|Compare and Increment|A-[HL],HL=HL+1,BC=BC-1| | |
648 | ;|CPIR |****1-|Compare, Inc., Repeat|CPI till A=[HL]or BC=0| | |
649 | ;|CPL |--1-1-|Complement |A=~A | | |
650 | ;|DAA |***P-*|Decimal Adjust Acc. |A=BCD format | | |
651 | ;|DEC s |***V1-|Decrement |s=s-1 | | |
652 | ;|DEC xx |------|Decrement |xx=xx-1 | | |
653 | ;|DEC ss |------|Decrement |ss=ss-1 | | |
654 | ;|DI |------|Disable Interrupts | | | |
655 | ;|DJNZ e |------|Dec., Jump Non-Zero |B=B-1 till B=0 | | |
656 | ;|EI |------|Enable Interrupts | | | |
657 | ;|EX [SP],HL|------|Exchange |[SP]<->HL | | |
658 | ;|EX [SP],xx|------|Exchange |[SP]<->xx | | |
659 | ;|EX AF,AF' |------|Exchange |AF<->AF' | | |
660 | ;|EX DE,HL |------|Exchange |DE<->HL | | |
661 | ;|EXX |------|Exchange |qq<->qq' (except AF)| | |
662 | ;|HALT |------|Halt | | | |
663 | ;|IM n |------|Interrupt Mode | (n=0,1,2)| | |
664 | ;|IN A,[n] |------|Input |A=[n] | | |
665 | ;|IN r,[C] |***P0-|Input |r=[C] | | |
666 | ;|INC r |***V0-|Increment |r=r+1 | | |
667 | ;|INC [HL] |***V0-|Increment |[HL]=[HL]+1 | | |
668 | ;|INC xx |------|Increment |xx=xx+1 | | |
669 | ;|INC [xx+d]|***V0-|Increment |[xx+d]=[xx+d]+1 | | |
670 | ;|INC ss |------|Increment |ss=ss+1 | | |
671 | ;|IND |?*??1-|Input and Decrement |[HL]=[C],HL=HL-1,B=B-1| | |
672 | ;|INDR |?1??1-|Input, Dec., Repeat |IND till B=0 | | |
673 | ;|INI |?*??1-|Input and Increment |[HL]=[C],HL=HL+1,B=B-1| | |
674 | ;|INIR |?1??1-|Input, Inc., Repeat |INI till B=0 | | |
675 | ;|JP [HL] |------|Unconditional Jump |PC=[HL] | | |
676 | ;|JP [xx] |------|Unconditional Jump |PC=[xx] | | |
677 | ;|JP nn |------|Unconditional Jump |PC=nn | | |
678 | ;|JP cc,nn |------|Conditional Jump |If cc JP | | |
679 | ;|JR e |------|Unconditional Jump |PC=PC+e | | |
680 | ;|JR cc,e |------|Conditional Jump |If cc JR(cc=C,NC,NZ,Z)| | |
681 | ;|LD dst,src|------|Load |dst=src | | |
682 | ;|LD A,i |**0*0-|Load |A=i (i=I,R)| | |
683 | ;|LDD |--0*0-|Load and Decrement |[DE]=[HL],HL=HL-1,# | | |
684 | ;|LDDR |--000-|Load, Dec., Repeat |LDD till BC=0 | | |
685 | ;|LDI |--0*0-|Load and Increment |[DE]=[HL],HL=HL+1,# | | |
686 | ;|LDIR |--000-|Load, Inc., Repeat |LDI till BC=0 | | |
687 | ;|NEG |***V1*|Negate |A=-A | | |
688 | ;|NOP |------|No Operation | | | |
37617bd8 | 689 | ;|OR s |**0P00|Logical inclusive OR |A=Avs | |
3c3744f1 L |
690 | ;|OTDR |?1??1-|Output, Dec., Repeat |OUTD till B=0 | |
691 | ;|OTIR |?1??1-|Output, Inc., Repeat |OUTI till B=0 | | |
692 | ;|OUT [C],r |------|Output |[C]=r | | |
693 | ;|OUT [n],A |------|Output |[n]=A | | |
694 | ;|OUTD |?*??1-|Output and Decrement |[C]=[HL],HL=HL-1,B=B-1| | |
695 | ;|OUTI |?*??1-|Output and Increment |[C]=[HL],HL=HL+1,B=B-1| | |
696 | ;|POP xx |------|Pop |xx=[SP]+ | | |
697 | ;|POP qq |------|Pop |qq=[SP]+ | | |
698 | ;|PUSH xx |------|Push |-[SP]=xx | | |
699 | ;|PUSH qq |------|Push |-[SP]=qq | | |
700 | ;|RES b,m |------|Reset bit |m=m&{~2^b} | | |
701 | ;|RET |------|Return |PC=[SP]+ | | |
702 | ;|RET cc |------|Conditional Return |If cc RET | | |
703 | ;|RETI |------|Return from Interrupt|PC=[SP]+ | | |
704 | ;|RETN |------|Return from NMI |PC=[SP]+ | | |
705 | ;|RL m |**0P0*|Rotate Left |m={CY,m}<- | | |
706 | ;|RLA |--0-0*|Rotate Left Acc. |A={CY,A}<- | | |
707 | ;|RLC m |**0P0*|Rotate Left Circular |m=m<- | | |
708 | ;|RLCA |--0-0*|Rotate Left Circular |A=A<- | | |
3c3744f1 L |
709 | ;|RLD |**0P0-|Rotate Left 4 bits |{A,[HL]}={A,[HL]}<- ##| |
710 | ;|RR m |**0P0*|Rotate Right |m=->{CY,m} | | |
711 | ;|RRA |--0-0*|Rotate Right Acc. |A=->{CY,A} | | |
712 | ;|RRC m |**0P0*|Rotate Right Circular|m=->m | | |
713 | ;|RRCA |--0-0*|Rotate Right Circular|A=->A | | |
714 | ;|RRD |**0P0-|Rotate Right 4 bits |{A,[HL]}=->{A,[HL]} ##| | |
715 | ;|RST p |------|Restart | (p=0H,8H,10H,...,38H)| | |
716 | ;|SBC A,s |***V1*|Subtract with Carry |A=A-s-CY | | |
717 | ;|SBC HL,ss |**?V1*|Subtract with Carry |HL=HL-ss-CY | | |
718 | ;|SCF |--0-01|Set Carry Flag |CY=1 | | |
719 | ;|SET b,m |------|Set bit |m=mv{2^b} | | |
720 | ;|SLA m |**0P0*|Shift Left Arithmetic|m=m*2 | | |
721 | ;|SRA m |**0P0*|Shift Right Arith. |m=m/2 | | |
722 | ;|SRL m |**0P0*|Shift Right Logical |m=->{0,m,CY} | | |
723 | ;|SUB s |***V1*|Subtract |A=A-s | | |
37617bd8 | 724 | ;|XOR s |**0P00|Logical Exclusive OR |A=Axs | |
3c3744f1 | 725 | ;|----------+------+--------------------------------------------| |
99ed7199 L |
726 | ;| F |-*01? |Flag unaffected/affected/reset/set/unknown | |
727 | ;| S |S |Sign flag (Bit 7) | | |
728 | ;| Z | Z |Zero flag (Bit 6) | | |
729 | ;| HC | H |Half Carry flag (Bit 4) | | |
730 | ;| P/V | P |Parity/Overflow flag (Bit 2, V=overflow) | | |
731 | ;| N | N |Add/Subtract flag (Bit 1) | | |
732 | ;| CY | C|Carry flag (Bit 0) | | |
733 | ;|-----------------+--------------------------------------------| | |
734 | ;| n |Immediate addressing | | |
735 | ;| nn |Immediate extended addressing | | |
736 | ;| e |Relative addressing (PC=PC+2+offset) | | |
737 | ;| [nn] |Extended addressing | | |
738 | ;| [xx+d] |Indexed addressing | | |
739 | ;| r |Register addressing | | |
740 | ;| [rr] |Register indirect addressing | | |
741 | ;| |Implied addressing | | |
742 | ;| b |Bit addressing | | |
743 | ;| p |Modified page zero addressing (see RST) | | |
744 | ;|-----------------+--------------------------------------------| | |
745 | ;|DEFB n(,...) |Define Byte(s) | | |
746 | ;|DEFB 'str'(,...) |Define Byte ASCII string(s) | | |
747 | ;|DEFS nn |Define Storage Block | | |
748 | ;|DEFW nn(,...) |Define Word(s) | | |
749 | ;|-----------------+--------------------------------------------| | |
750 | ;| A B C D E |Registers (8-bit) | | |
751 | ;| AF BC DE HL |Register pairs (16-bit) | | |
752 | ;| F |Flag register (8-bit) | | |
753 | ;| I |Interrupt page address register (8-bit) | | |
754 | ;| IX IY |Index registers (16-bit) | | |
755 | ;| PC |Program Counter register (16-bit) | | |
756 | ;| R |Memory Refresh register | | |
757 | ;| SP |Stack Pointer register (16-bit) | | |
758 | ;|-----------------+--------------------------------------------| | |
759 | ;| b |One bit (0 to 7) | | |
760 | ;| cc |Condition (C,M,NC,NZ,P,PE,PO,Z) | | |
761 | ;| d |One-byte expression (-128 to +127) | | |
762 | ;| dst |Destination s, ss, [BC], [DE], [HL], [nn] | | |
763 | ;| e |One-byte expression (-126 to +129) | | |
764 | ;| m |Any register r, [HL] or [xx+d] | | |
765 | ;| n |One-byte expression (0 to 255) | | |
766 | ;| nn |Two-byte expression (0 to 65535) | | |
767 | ;| pp |Register pair BC, DE, IX or SP | | |
768 | ;| qq |Register pair AF, BC, DE or HL | | |
769 | ;| qq' |Alternative register pair AF, BC, DE or HL | | |
770 | ;| r |Register A, B, C, D, E, H or L | | |
771 | ;| rr |Register pair BC, DE, IY or SP | | |
772 | ;| s |Any register r, value n, [HL] or [xx+d] | | |
773 | ;| src |Source s, ss, [BC], [DE], [HL], nn, [nn] | | |
774 | ;| ss |Register pair BC, DE, HL or SP | | |
775 | ;| xx |Index register IX or IY | | |
776 | ;|-----------------+--------------------------------------------| | |
777 | ;| + - * / ^ |Add/subtract/multiply/divide/exponent | | |
778 | ;| & ~ v x |Logical AND/NOT/inclusive OR/exclusive OR | | |
779 | ;| <- -> |Rotate left/right | | |
780 | ;| [ ] |Indirect addressing | | |
781 | ;| [ ]+ -[ ] |Indirect addressing auto-increment/decrement| | |
782 | ;| { } |Combination of operands | | |
783 | ;| # |Also BC=BC-1,DE=DE-1 | | |
784 | ;| ## |Only lower 4 bits of accumulator A used | | |
785 | ;---------------------------------------------------------------- | |
fdcfcd44 | 786 | |
9c15f366 L |
787 | ;How the flags are supposed to work: |
788 | ;7 ZFL_S - Sign flag (=MSBit of result) | |
789 | ;6 ZFL_Z - Zero flag. Is 1 when the result is 0 | |
790 | ;4 ZFL_H - Half-carry (carry from bit 3 to 4) | |
791 | ;2 ZFL_P - Parity/2-complement Overflow | |
792 | ;1 ZFL_N - Subtract - set if last op was a subtract | |
793 | ;0 ZFL_C - Carry | |
794 | ; | |
795 | ;I sure hope I got the mapping between flags and instructions correct... | |
796 | ||
797 | .equ ZFL_S = 7 | |
798 | .equ ZFL_Z = 6 | |
799 | .equ ZFL_H = 4 | |
800 | .equ ZFL_P = 2 | |
801 | .equ ZFL_N = 1 | |
802 | .equ ZFL_C = 0 | |
37617bd8 | 803 | |
78700514 L |
804 | .equ AVR_T = SREG_T |
805 | .equ AVR_H = SREG_H | |
806 | .equ AVR_S = SREG_S | |
807 | .equ AVR_V = SREG_V | |
808 | .equ AVR_N = SREG_N | |
809 | .equ AVR_Z = SREG_Z | |
810 | .equ AVR_C = SREG_C | |
fdcfcd44 | 811 | |
37617bd8 L |
812 | ;------------------------------------------------; |
813 | ; Load table value from flash indexed by source reg. | |
814 | ; | |
815 | ; ldpmx dstreg,tablebase,indexreg | |
816 | ; | |
817 | ; (6 words, 8 cycles) | |
818 | ||
819 | .macro ldpmx | |
99ed7199 L |
820 | ldi zh,high(@1*2) ; table must be page aligned |
821 | mov zl,@2 | |
37617bd8 L |
822 | lpm @0,z |
823 | .endm | |
9c15f366 | 824 | |
f1deeee3 | 825 | .macro do_z80_flags_V |
37617bd8 L |
826 | #if EM_Z80 |
827 | bmov z_flags, ZFL_P, temp, AVR_V | |
37617bd8 L |
828 | #endif |
829 | .endm | |
830 | ||
831 | .macro do_z80_flags_set_N | |
832 | #if EM_Z80 | |
833 | ori z_flags, (1<<ZFL_N) ; Negation auf 1 | |
834 | #endif | |
835 | .endm | |
836 | ||
837 | .macro do_z80_flags_set_HN | |
838 | #if EM_Z80 | |
839 | ori z_flags,(1<<ZFL_N)|(1<<ZFL_H) | |
840 | #endif | |
841 | .endm | |
842 | ||
843 | .macro do_z80_flags_clear_N | |
844 | #if EM_Z80 | |
845 | andi z_flags,~(1<<ZFL_N) | |
846 | #endif | |
847 | .endm | |
848 | ||
f1deeee3 L |
849 | .macro do_z80_flags_clear_HN |
850 | #if EM_Z80 | |
851 | andi z_flags,~((1<<ZFL_H)|(1<<ZFL_N)) | |
852 | #endif | |
853 | .endm | |
854 | ||
855 | ||
856 | .macro do_z80_flags_copy_HC | |
857 | #if EM_Z80 | |
858 | bmov z_flags, ZFL_H, z_flags, ZFL_H | |
859 | #endif | |
860 | .endm | |
861 | ||
37617bd8 L |
862 | .macro do_z80_flags_op_rotate |
863 | ; must not change avr carry flag! | |
864 | #if EM_Z80 | |
865 | andi z_flags, ~( (1<<ZFL_H) | (1<<ZFL_N) | (1<<ZFL_C) ) | |
866 | #else | |
867 | andi z_flags, ~( (1<<ZFL_C) ) | |
868 | #endif | |
869 | .endm | |
870 | ||
871 | .macro do_z80_flags_op_and | |
872 | #if EM_Z80 | |
873 | ori z_flags,(1<<ZFL_H) | |
37617bd8 L |
874 | #endif |
875 | .endm | |
876 | ||
877 | .macro do_z80_flags_op_or | |
878 | #if EM_Z80 | |
f1deeee3 | 879 | ;nothing to do |
37617bd8 L |
880 | #endif |
881 | .endm | |
882 | ||
883 | ||
9c15f366 | 884 | ;---------------------------------------------------------------- |
f1deeee3 | 885 | |
9c15f366 | 886 | do_op_inv: |
f1deeee3 L |
887 | sbiw z_pcl,1 |
888 | lcall printregs | |
889 | printstring "Invalid opcode! " | |
890 | ||
9c15f366 L |
891 | haltinv: |
892 | rjmp haltinv | |
893 | ||
fdcfcd44 L |
894 | do_op_nop: |
895 | ret | |
896 | ||
9c15f366 L |
897 | ;---------------------------------------------------------------- |
898 | ;|Mnemonic |SZHPNC|Description |Notes | | |
899 | ;---------------------------------------------------------------- | |
900 | ;|OUT [n],A |------|Output |[n]=A | | |
901 | ; | |
902 | ; | |
903 | ;Interface with peripherials goes here :) | |
904 | do_op_outa: ; out (opl),a | |
905 | .if PORT_DEBUG | |
906 | printnewline | |
907 | printstring "Port write: " | |
908 | mov temp,z_a | |
909 | rcall printhex | |
910 | printstring " -> (" | |
911 | mov temp,opl | |
912 | rcall printhex | |
913 | printstring ") " | |
914 | .endif | |
915 | mov temp,z_a | |
916 | mov temp2,opl | |
f1deeee3 | 917 | lcall portWrite |
9c15f366 L |
918 | ret |
919 | ||
920 | ;---------------------------------------------------------------- | |
921 | ;|Mnemonic |SZHPNC|Description |Notes | | |
922 | ;---------------------------------------------------------------- | |
923 | ;|IN A,[n] |------|Input |A=[n] | | |
924 | ; | |
925 | ; | |
926 | do_op_in: ; in a,(opl) | |
927 | .if PORT_DEBUG | |
928 | printnewline | |
929 | printstring "Port read: (" | |
930 | mov temp,opl | |
931 | rcall printhex | |
932 | printstring ") -> " | |
933 | .endif | |
934 | ||
935 | mov temp2,opl | |
f1deeee3 | 936 | lcall portRead |
9c15f366 L |
937 | mov opl,temp |
938 | ||
939 | .if PORT_DEBUG | |
940 | rcall printhex | |
941 | printstring " " | |
942 | .endif | |
943 | ret | |
944 | ||
3c3744f1 L |
945 | ;---------------------------------------------------------------- |
946 | ;|Mnemonic |SZHPNC|Description |Notes | | |
947 | ;---------------------------------------------------------------- | |
948 | ;|INC r |***V0-|Increment |r=r+1 | | |
949 | ;|INC [HL] |***V0-|Increment |[HL]=[HL]+1 | | |
950 | ;|INC [xx+d]|***V0-|Increment |[xx+d]=[xx+d]+1 | | |
37617bd8 L |
951 | ;|----------|SZHP C|---------- 8080 ----------------------------| |
952 | ;|INC r |**-P0-|Increment |r=r+1 | | |
953 | ;|INC [HL] |**-P0-|Increment |[HL]=[HL]+1 | | |
3c3744f1 | 954 | ; |
37617bd8 | 955 | ; |
fdcfcd44 | 956 | do_op_inc: |
f1deeee3 L |
957 | ldi temp,1 |
958 | add opl,temp | |
37617bd8 | 959 | in temp, sreg |
f1deeee3 | 960 | andi z_flags,(1<<ZFL_C) ; preserve C-flag |
37617bd8 L |
961 | ldpmx temp2, sz53p_tab, opl |
962 | or z_flags,temp2 ; | |
f1deeee3 L |
963 | bmov z_flags, ZFL_H, temp, AVR_H |
964 | do_z80_flags_V | |
64f220e6 L |
965 | ret |
966 | ||
d305f8e4 | 967 | do_op_inca: |
f1deeee3 L |
968 | ldi temp,1 |
969 | add z_a,temp | |
d305f8e4 | 970 | in temp, sreg |
f1deeee3 | 971 | andi z_flags,(1<<ZFL_C) ; preserve C-flag |
d305f8e4 L |
972 | ldpmx temp2, sz53p_tab, z_a |
973 | or z_flags,temp2 ; | |
f1deeee3 L |
974 | bmov z_flags, ZFL_H, temp, AVR_H |
975 | do_z80_flags_V | |
d305f8e4 L |
976 | ret |
977 | ||
3c3744f1 L |
978 | ;---------------------------------------------------------------- |
979 | ;|Mnemonic |SZHPNC|Description |Notes | | |
980 | ;---------------------------------------------------------------- | |
37617bd8 L |
981 | ;|DEC r |***V1-|Decrement |s=s-1 | |
982 | ;|INC [HL] |***V0-|Increment |[HL]=[HL]+1 | | |
983 | ;|INC [xx+d]|***V0-|Increment |[xx+d]=[xx+d]+1 | | |
984 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
985 | ;|DEC r |**-P -|Increment |r=r+1 | | |
986 | ;|DEC [HL] |**-P -|Increment |[HL]=[HL]+1 | | |
987 | ; | |
3c3744f1 | 988 | ; |
fdcfcd44 | 989 | do_op_dec: |
f1deeee3 | 990 | subi opl,1 |
64f220e6 | 991 | in temp, sreg |
f1deeee3 | 992 | andi z_flags,(1<<ZFL_C) ; preserve C-flag |
37617bd8 L |
993 | ldpmx temp2, sz53p_tab, opl |
994 | or z_flags,temp2 ; | |
f1deeee3 L |
995 | bmov z_flags, ZFL_H, temp, AVR_H |
996 | do_z80_flags_V | |
37617bd8 | 997 | do_z80_flags_set_N |
3c3744f1 L |
998 | ret |
999 | ||
d305f8e4 | 1000 | do_op_deca: |
f1deeee3 L |
1001 | ldi opl,1 |
1002 | sub z_a,opl | |
d305f8e4 | 1003 | in temp, sreg |
f1deeee3 | 1004 | andi z_flags,(1<<ZFL_C) ; preserve C-flag |
d305f8e4 L |
1005 | ldpmx temp2, sz53p_tab, z_a |
1006 | or z_flags,temp2 ; | |
f1deeee3 L |
1007 | bmov z_flags, ZFL_H, temp, AVR_H |
1008 | do_z80_flags_V | |
d305f8e4 L |
1009 | do_z80_flags_set_N |
1010 | ret | |
3c3744f1 L |
1011 | |
1012 | ;---------------------------------------------------------------- | |
1013 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1014 | ;---------------------------------------------------------------- | |
1015 | ;|INC xx |------|Increment |xx=xx+1 | | |
1016 | ;|INC ss |------|Increment |ss=ss+1 | | |
1017 | ; | |
37617bd8 | 1018 | ; |
fdcfcd44 | 1019 | do_op_inc16: |
db568140 L |
1020 | subi opl,low(-1) |
1021 | sbci oph,high(-1) | |
64f220e6 L |
1022 | ret |
1023 | ||
3c3744f1 L |
1024 | ;---------------------------------------------------------------- |
1025 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1026 | ;---------------------------------------------------------------- | |
1027 | ;|DEC xx |------|Decrement |xx=xx-1 | | |
1028 | ;|DEC ss |------|Decrement |ss=ss-1 | | |
1029 | ; | |
37617bd8 | 1030 | ; |
fdcfcd44 | 1031 | do_op_dec16: |
37617bd8 L |
1032 | subi opl, 1 |
1033 | sbci oph, 0 | |
64f220e6 L |
1034 | ret |
1035 | ||
3c3744f1 L |
1036 | ;---------------------------------------------------------------- |
1037 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1038 | ;---------------------------------------------------------------- | |
1039 | ;|RLCA |--0-0*|Rotate Left Circular |A=A<- | | |
37617bd8 L |
1040 | ;|----------|SZHP C|---------- 8080 ----------------------------| |
1041 | ;|RLCA |---- *|Rotate Left Circular |A=A<- | | |
1042 | ; | |
3c3744f1 | 1043 | ; |
f1deeee3 | 1044 | do_op_rlca: |
fdcfcd44 L |
1045 | ;Rotate Left Cyclical. All bits move 1 to the |
1046 | ;left, the msb becomes c and lsb. | |
37617bd8 | 1047 | do_z80_flags_op_rotate |
f1deeee3 | 1048 | lsl z_a |
64f220e6 | 1049 | brcc do_op_rlc_noc |
f1deeee3 L |
1050 | ldi temp,1 |
1051 | or z_a,temp | |
64f220e6 | 1052 | ori z_flags, (1<<ZFL_C) |
fdcfcd44 L |
1053 | do_op_rlc_noc: |
1054 | ret | |
1055 | ||
3c3744f1 L |
1056 | ;---------------------------------------------------------------- |
1057 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1058 | ;---------------------------------------------------------------- | |
1059 | ;|RRCA |--0-0*|Rotate Right Circular|A=->A | | |
37617bd8 L |
1060 | ;|----------|SZHP C|---------- 8080 ----------------------------| |
1061 | ;|RRCA |---- *|Rotate Right Circular|A=->A | | |
1062 | ; | |
3c3744f1 | 1063 | ; |
f1deeee3 | 1064 | do_op_rrca: |
fdcfcd44 L |
1065 | ;Rotate Right Cyclical. All bits move 1 to the |
1066 | ;right, the lsb becomes c and msb. | |
37617bd8 | 1067 | do_z80_flags_op_rotate |
f1deeee3 | 1068 | lsr z_a |
64f220e6 | 1069 | brcc do_op_rrc_noc |
f1deeee3 L |
1070 | ldi temp,0x80 |
1071 | or z_a,temp | |
64f220e6 | 1072 | ori z_flags, (1<<ZFL_C) |
fdcfcd44 L |
1073 | do_op_rrc_noc: |
1074 | ret | |
1075 | ||
3c3744f1 L |
1076 | ;---------------------------------------------------------------- |
1077 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1078 | ;---------------------------------------------------------------- | |
1079 | ;|RRA |--0-0*|Rotate Right Acc. |A=->{CY,A} | | |
37617bd8 L |
1080 | ;|----------|SZHP C|---------- 8080 ----------------------------| |
1081 | ;|RRA |---- *|Rotate Right Acc. |A=->{CY,A} | | |
3c3744f1 | 1082 | ; |
37617bd8 | 1083 | ; |
f1deeee3 | 1084 | do_op_rra: |
fdcfcd44 L |
1085 | ;Rotate Right. All bits move 1 to the right, the lsb |
1086 | ;becomes c, c becomes msb. | |
37617bd8 | 1087 | clc ; get z80 carry to avr carry |
64f220e6 L |
1088 | sbrc z_flags,ZFL_C |
1089 | sec | |
37617bd8 | 1090 | do_z80_flags_op_rotate ; (clear ZFL_C, doesn't change AVR_C) |
f1deeee3 L |
1091 | bmov z_flags,ZFL_C, z_a,0 ; Bit 0 --> CY |
1092 | ror z_a | |
64f220e6 L |
1093 | ret |
1094 | ||
3c3744f1 L |
1095 | ;---------------------------------------------------------------- |
1096 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1097 | ;---------------------------------------------------------------- | |
37617bd8 L |
1098 | ;|RLA |--0-0*|Rotate Left Acc. |A={CY,A}<- | |
1099 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1100 | ;|RLA |---- *|Rotate Left Acc. |A={CY,A}<- | | |
3c3744f1 | 1101 | ; |
37617bd8 | 1102 | ; |
f1deeee3 | 1103 | do_op_rla: |
fdcfcd44 L |
1104 | ;Rotate Left. All bits move 1 to the left, the msb |
1105 | ;becomes c, c becomes lsb. | |
1106 | clc | |
1107 | sbrc z_flags,ZFL_C | |
1108 | sec | |
37617bd8 | 1109 | do_z80_flags_op_rotate ; (clear ZFL_C, doesn't change AVR_C) |
f1deeee3 L |
1110 | bmov z_flags,ZFL_C, z_a,7 ; Bit 7 --> CY |
1111 | rol z_a | |
fdcfcd44 L |
1112 | ret |
1113 | ||
3c3744f1 L |
1114 | ;---------------------------------------------------------------- |
1115 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1116 | ;---------------------------------------------------------------- | |
37617bd8 L |
1117 | ;|ADD A,s |***V0*|Add |A=A+s | |
1118 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1119 | ;|ADD A,s |***P *|Add |A=A+s | | |
1120 | ; | |
3c3744f1 | 1121 | ; |
fdcfcd44 | 1122 | do_op_adda: |
1a1d6a78 | 1123 | add z_a,opl |
fdcfcd44 | 1124 | in temp,sreg |
1a1d6a78 | 1125 | ldpmx z_flags,sz53p_tab,z_a ;S,Z,P flag |
37617bd8 | 1126 | bmov z_flags,ZFL_C, temp,AVR_C |
f1deeee3 L |
1127 | bmov z_flags,ZFL_H, temp,AVR_H |
1128 | do_z80_flags_V | |
fdcfcd44 L |
1129 | ret |
1130 | ||
3c3744f1 L |
1131 | ;---------------------------------------------------------------- |
1132 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1133 | ;---------------------------------------------------------------- | |
37617bd8 L |
1134 | ;|ADC A,s |***V0*|Add with Carry |A=A+s+CY | |
1135 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1136 | ;|ADC A,s |***P *|Add with Carry |A=A+s+CY | | |
1137 | ; | |
3c3744f1 | 1138 | ; |
fdcfcd44 L |
1139 | do_op_adca: |
1140 | clc | |
1141 | sbrc z_flags,ZFL_C | |
1142 | sec | |
1a1d6a78 | 1143 | adc z_a,opl |
fdcfcd44 | 1144 | in temp,sreg |
1a1d6a78 | 1145 | ldpmx z_flags,sz53p_tab,z_a ;S,Z,P |
37617bd8 | 1146 | bmov z_flags,ZFL_C, temp,AVR_C |
f1deeee3 L |
1147 | bmov z_flags,ZFL_H, temp,AVR_H |
1148 | do_z80_flags_V | |
fdcfcd44 L |
1149 | ret |
1150 | ||
3c3744f1 L |
1151 | ;---------------------------------------------------------------- |
1152 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1153 | ;---------------------------------------------------------------- | |
37617bd8 | 1154 | ;|SUB s |***V1*|Subtract |A=A-s | |
37617bd8 L |
1155 | ;|----------|SZHP C|---------- 8080 ----------------------------| |
1156 | ;|SUB s |***P *|Subtract |A=A-s | | |
37617bd8 | 1157 | |
3c3744f1 | 1158 | ; |
fdcfcd44 | 1159 | do_op_subfa: |
1a1d6a78 L |
1160 | sub z_a,opl |
1161 | in temp,sreg | |
1162 | ldpmx z_flags,sz53p_tab,z_a ;S,Z,P | |
1163 | bmov z_flags,ZFL_C, temp,AVR_C | |
f1deeee3 L |
1164 | bmov z_flags,ZFL_H, temp,AVR_H |
1165 | do_z80_flags_V | |
1a1d6a78 L |
1166 | do_z80_flags_set_N |
1167 | ret | |
1168 | ||
1169 | ;---------------------------------------------------------------- | |
1170 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1171 | ;---------------------------------------------------------------- | |
1172 | ;|CP s |***V1*|Compare |A-s | | |
1173 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1174 | ;|CP s |***P *|Compare |A-s | | |
1175 | ||
1176 | ; | |
1177 | do_op_cpfa: | |
f1deeee3 L |
1178 | mov temp2,z_a |
1179 | sub temp2,opl | |
fdcfcd44 | 1180 | in temp,sreg |
f1deeee3 | 1181 | ldpmx z_flags,sz53p_tab,temp2 ;S,Z,P |
37617bd8 | 1182 | bmov z_flags,ZFL_C, temp,AVR_C |
f1deeee3 L |
1183 | bmov z_flags,ZFL_H, temp,AVR_H |
1184 | do_z80_flags_V | |
37617bd8 | 1185 | do_z80_flags_set_N |
fdcfcd44 L |
1186 | ret |
1187 | ||
3c3744f1 L |
1188 | ;---------------------------------------------------------------- |
1189 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1190 | ;---------------------------------------------------------------- | |
37617bd8 L |
1191 | ;|SBC A,s |***V1*|Subtract with Carry |A=A-s-CY | |
1192 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1193 | ;|SBC A,s |***P *|Subtract with Carry |A=A-s-CY | | |
1194 | ; | |
3c3744f1 | 1195 | ; |
fdcfcd44 | 1196 | do_op_sbcfa: |
fdcfcd44 L |
1197 | clc |
1198 | sbrc z_flags,ZFL_C | |
1199 | sec | |
1a1d6a78 | 1200 | sbc z_a,opl |
fdcfcd44 | 1201 | in temp,sreg |
1a1d6a78 | 1202 | ldpmx z_flags,sz53p_tab,z_a ;S,Z,P |
37617bd8 | 1203 | bmov z_flags,ZFL_C, temp,AVR_C |
f1deeee3 L |
1204 | bmov z_flags,ZFL_H, temp,AVR_H |
1205 | do_z80_flags_V | |
37617bd8 | 1206 | do_z80_flags_set_N |
fdcfcd44 L |
1207 | ret |
1208 | ||
3c3744f1 L |
1209 | ;---------------------------------------------------------------- |
1210 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1211 | ;---------------------------------------------------------------- | |
37617bd8 L |
1212 | ;|AND s |**1P00|Logical AND |A=A&s | |
1213 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1214 | ;|AND s |**-P 0|Logical AND |A=A&s | | |
3c3744f1 | 1215 | ; |
f1deeee3 | 1216 | ; |
fdcfcd44 | 1217 | do_op_anda: |
1a1d6a78 L |
1218 | and z_a,opl ; |
1219 | ldpmx z_flags,sz53p_tab,z_a ;S,Z,P,N,C | |
37617bd8 | 1220 | do_z80_flags_op_and |
fdcfcd44 L |
1221 | ret |
1222 | ||
37617bd8 | 1223 | |
3c3744f1 L |
1224 | ;---------------------------------------------------------------- |
1225 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1226 | ;---------------------------------------------------------------- | |
37617bd8 L |
1227 | ;|OR s |**0P00|Logical inclusive OR |A=Avs | |
1228 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1229 | ;|OR s |**-P00|Logical inclusive OR |A=Avs | | |
3c3744f1 | 1230 | ; |
f1deeee3 | 1231 | ; |
fdcfcd44 | 1232 | do_op_ora: |
1a1d6a78 L |
1233 | or z_a,opl |
1234 | ldpmx z_flags,sz53p_tab,z_a ;S,Z,H,P,N,C | |
37617bd8 | 1235 | do_z80_flags_op_or |
fdcfcd44 L |
1236 | ret |
1237 | ||
3c3744f1 L |
1238 | ;---------------------------------------------------------------- |
1239 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1240 | ;---------------------------------------------------------------- | |
37617bd8 L |
1241 | ;|XOR s |**0P00|Logical Exclusive OR |A=Axs | |
1242 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1243 | ;|XOR s |**-P 0|Logical Exclusive OR |A=Axs | | |
3c3744f1 | 1244 | ; |
f1deeee3 | 1245 | ; |
fdcfcd44 | 1246 | do_op_xora: |
1a1d6a78 L |
1247 | eor z_a,opl |
1248 | ldpmx z_flags,sz53p_tab,z_a ;S,Z,H,P,N,C | |
37617bd8 | 1249 | do_z80_flags_op_or |
fdcfcd44 L |
1250 | ret |
1251 | ||
3c3744f1 L |
1252 | ;---------------------------------------------------------------- |
1253 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1254 | ;---------------------------------------------------------------- | |
37617bd8 L |
1255 | ;|ADD HL,ss |--?-0*|Add |HL=HL+ss | |
1256 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1257 | ;|ADD HL,ss |---- *|Add |HL=HL+ss | | |
1258 | ; | |
3c3744f1 | 1259 | ; |
fdcfcd44 | 1260 | do_op_addhl: |
9c15f366 L |
1261 | lds temp,z_l |
1262 | lds temp2,z_h | |
1263 | add opl,temp | |
1264 | adc oph,temp2 | |
fdcfcd44 | 1265 | in temp,sreg |
37617bd8 L |
1266 | bmov z_flags,ZFL_H, temp,AVR_H |
1267 | bmov z_flags,ZFL_C, temp,AVR_C | |
1268 | do_z80_flags_clear_N | |
fdcfcd44 L |
1269 | ret |
1270 | ||
3c3744f1 L |
1271 | ;---------------------------------------------------------------- |
1272 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1273 | ;---------------------------------------------------------------- | |
37617bd8 | 1274 | ;|LD dst,src|------|Load |dst=src | |
3c3744f1 | 1275 | ; |
37617bd8 L |
1276 | ; |
1277 | do_op_sthl: ;store hl to mem loc in opl:h | |
78700514 | 1278 | movw xl,opl |
9c15f366 L |
1279 | lds temp,z_l |
1280 | mem_write | |
78700514 | 1281 | adiw xl,1 |
9c15f366 L |
1282 | lds temp,z_h |
1283 | mem_write | |
fdcfcd44 L |
1284 | ret |
1285 | ||
3c3744f1 L |
1286 | ;---------------------------------------------------------------- |
1287 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1288 | ;---------------------------------------------------------------- | |
37617bd8 | 1289 | ;|LD dst,src|------|Load |dst=src | |
3c3744f1 | 1290 | ; |
37617bd8 | 1291 | ; |
fdcfcd44 | 1292 | do_op_rmem16: |
78700514 | 1293 | movw xl,opl |
9c15f366 L |
1294 | mem_read_d opl |
1295 | adiw x,1 | |
1296 | mem_read_d oph | |
fdcfcd44 L |
1297 | ret |
1298 | ||
3c3744f1 L |
1299 | ;---------------------------------------------------------------- |
1300 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1301 | ;---------------------------------------------------------------- | |
37617bd8 L |
1302 | ;|LD dst,src|------|Load |dst=src | |
1303 | ; | |
3c3744f1 | 1304 | ; |
fdcfcd44 | 1305 | do_op_rmem8: |
9c15f366 | 1306 | mem_read_ds opl, op |
fdcfcd44 L |
1307 | ret |
1308 | ||
3c3744f1 L |
1309 | ;---------------------------------------------------------------- |
1310 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1311 | ;---------------------------------------------------------------- | |
37617bd8 L |
1312 | ;|DAA |***P-*|Decimal Adjust Acc. | | |
1313 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
3c3744f1 L |
1314 | ; |
1315 | ; Not yet checked | |
37617bd8 L |
1316 | |
1317 | ; Description (http://www.z80.info/z80syntx.htm#DAA): | |
1318 | ; This instruction conditionally adjusts the accumulator for BCD addition | |
1319 | ; and subtraction operations. For addition (ADD, ADC, INC) or subtraction | |
1320 | ; (SUB, SBC, DEC, NEC), the following table indicates the operation performed: | |
1321 | ; | |
f1deeee3 L |
1322 | ; ------------------------------------------------------------------- |
1323 | ; | |C Flag |HEX value in|H Flag |HEX val in | Number |C flag | | |
1324 | ; | Oper |Before |upper digit |Before |lower digit| added |After | | |
1325 | ; | |DAA |(bit 7-4) |DAA |(bit 3-0) | to A |DAA | | |
1326 | ; |-------+-------+------------+-------+-----------+--------+-------| | |
37617bd8 L |
1327 | ; | | 0 | 0-9 | 0 | 0-9 | 00 | 0 | |
1328 | ; | ADD | 0 | 0-8 | 0 | A-F | 06 | 0 | | |
1329 | ; | | 0 | 0-9 | 1 | 0-3 | 06 | 0 | | |
1330 | ; | ADC | 0 | A-F | 0 | 0-9 | 60 | 1 | | |
1331 | ; | | 0 | 9-F | 0 | A-F | 66 | 1 | | |
1332 | ; | INC | 0 | A-F | 1 | 0-3 | 66 | 1 | | |
1333 | ; | | 1 | 0-2 | 0 | 0-9 | 60 | 1 | | |
1334 | ; | | 1 | 0-2 | 0 | A-F | 66 | 1 | | |
1335 | ; | | 1 | 0-3 | 1 | 0-3 | 66 | 1 | | |
f1deeee3 | 1336 | ; |-------+-------+------------+-------+-----------+--------+-------| |
37617bd8 L |
1337 | ; | SUB | 0 | 0-9 | 0 | 0-9 | 00 | 0 | |
1338 | ; | SBC | 0 | 0-8 | 1 | 6-F | FA | 0 | | |
1339 | ; | DEC | 1 | 7-F | 0 | 0-9 | A0 | 1 | | |
1340 | ; | NEG | 1 | 6-F | 1 | 6-F | 9A | 1 | | |
f1deeee3 L |
1341 | ; ------------------------------------------------------------------- |
1342 | ; | |
1343 | ; The H flag is affected as follows: | |
1344 | ; | |
1345 | ; --------------------- | |
1346 | ; | N | H | low |H' | | |
1347 | ; | | |nibble | | | |
1348 | ; |---+---+-------+---| | |
1349 | ; | 0 | * | 0-9 | 0 | | |
1350 | ; | 0 | * | a-f | 1 | | |
1351 | ; | 1 | 0 | * | 0 | | |
1352 | ; | 1 | 1 | 6-f | 0 | | |
1353 | ; | 1 | 1 | 0-5 | 1 | | |
1354 | ; --------------------- | |
1355 | ; | |
1356 | ; Ohter flags: | |
37617bd8 L |
1357 | ; N: Unaffected. |
1358 | ; P/V: Set if Acc. is even parity after operation, reset otherwise. | |
1359 | ; H: See instruction. | |
1360 | ; Z: Set if Acc. is Zero after operation, reset otherwise. | |
1361 | ; S: Set if most significant bit of Acc. is 1 after operation, reset otherwise. | |
1362 | ||
1363 | ||
1364 | ||
1365 | #if 1 | |
f1deeee3 | 1366 | |
fdcfcd44 | 1367 | do_op_da: |
f1deeee3 L |
1368 | |
1369 | #if EM_Z80 | |
1370 | sbrc z_flags,ZFL_N ;if add-op | |
1371 | rjmp op_da_sub ;then | |
1372 | #endif | |
1373 | ||
1374 | op_da_add: | |
1375 | ldi temp2,0 ; new C and H flag | |
1376 | sbrc z_flags,ZFL_H ; | | |
1377 | rjmp op_da_a01 ; if (H flag ... | |
1378 | mov temp,opl ; | | |
1379 | andi temp,0x0f ; | | |
1380 | cpi temp,0x0a ; or (lower nibble >= 0x0A)) | |
1381 | brlo op_da_a10 ; | | |
1382 | op_da_a01: ; then | |
1383 | ldi oph,0x06 ; add 6 to lower nibble | |
1384 | add opl,oph ; | |
1385 | brhc op_da_02 ; if | |
1386 | ori temp2,(1<<ZFL_H) ; set new H flag | |
1387 | op_da_02: ; | |
1388 | brcc op_da_a10 ; if | |
1389 | ori temp2,(1<<ZFL_C) ; set new H flag | |
1390 | op_da_a10: ; endif | |
1391 | sbrc z_flags,ZFL_C ; | | |
1392 | rjmp op_da_a12 ; if (C flag ... | |
1393 | cpi opl,0xA0 ; |... or upper nibble >= 0xA0) | |
1394 | brlo op_da_a13 ; | |
1395 | op_da_a12: ; | |
1396 | ldi oph,0x60 ; add 6 to lower nibble | |
1397 | add opl,oph ; | |
1398 | ori temp2,(1<<ZFL_C) ; set new C flag | |
1399 | op_da_a13: ; | |
1400 | ldpmx z_flags, sz53p_tab, opl ; get S,Z,P flag | |
1401 | or z_flags,temp2 ; merge new C and H flag | |
fdcfcd44 | 1402 | ret |
f1deeee3 L |
1403 | |
1404 | #if EM_Z80 | |
1405 | ||
1406 | op_da_sub: ;else (sub-op) | |
1407 | rcall do_op_inv ; TODO: ! | |
1408 | ret ;endif | |
1409 | #endif | |
1410 | ||
37617bd8 | 1411 | #else |
fdcfcd44 | 1412 | |
37617bd8 | 1413 | do_op_da: |
f1deeee3 L |
1414 | ldi temp2,0 ;new C and H flag |
1415 | ldi oph,0 ;oph: what to add | |
1416 | ||
37617bd8 | 1417 | sbrc z_flags,ZFL_N ; if add-op |
f1deeee3 L |
1418 | rjmp op_da_sub ;then |
1419 | op_da_add: | |
1420 | mov temp,opl ; | | |
1421 | andi temp,0x0f ; | | |
1422 | cpi temp,0x0a ; if (lower nibble >= 0x0A) | |
1423 | brlo op_da_a10 ; | | |
1424 | ori oph,0x06 ; add 6 | |
1425 | ori temp2,(1<<ZFL_H) ; set new H flag | |
1426 | ||
1427 | sbrc z_flags,ZFL_C ; | | |
1428 | rjmp op_da_a02 ; if (C flag ... | |
1429 | cpi opl,0x90 ; |... or upper nibble >= 0x90) | |
1430 | brlo op_da_a03 ; | | |
1431 | op_da_a02: | |
1432 | ori oph,0x60 ; add 0x60 | |
1433 | ori temp2,(1<<ZFL_C) ; set new C flag | |
1434 | op_da_a03: ; endif | |
1435 | rjmp op_da_ae | |
1436 | op_da_a10: ; else (lower nibble is 0x09 or lower) | |
1437 | sbrc z_flags,ZFL_C ; | | |
1438 | rjmp op_da_a12 ; if (C flag ... | |
1439 | cpi opl,0xA0 ; |... or upper nibble >= 0xA0) | |
1440 | brlo op_da_a13 ; | |
1441 | op_da_a12: | |
1442 | ori oph,0x60 ; add 0x60 | |
1443 | ori temp2,(1<<ZFL_C) ; set new C flag | |
1444 | op_da_a13: | |
1445 | sbrs z_flags,ZFL_H ; if (H flag) | |
1446 | rjmp op_da_ae ; | | |
1447 | ori oph,0x06 ; add 0x06 | |
1448 | mov temp,opl ; | | |
1449 | andi temp,0x0f ; | | |
1450 | cpi temp,0x06 ; if (lower nibble >= 0x0A) | |
1451 | brsh op_da_ae ; | | |
1452 | ori temp2,(1<<ZFL_H) ; set new H flag | |
1453 | ; endif | |
1454 | ; endif | |
1455 | op_da_ae: | |
1456 | add opl,oph | |
1457 | ldpmx z_flags, sz53p_tab, opl ; get S,Z,P flag | |
1458 | or z_flags,temp2 ; merge new C and H flag | |
37617bd8 L |
1459 | ret |
1460 | ||
f1deeee3 L |
1461 | op_da_sub: ;else (sub-op) |
1462 | rcall do_op_inv ; TODO: ! | |
1463 | ret ;endif | |
37617bd8 | 1464 | #endif |
fdcfcd44 | 1465 | |
f1deeee3 | 1466 | |
3c3744f1 L |
1467 | ;---------------------------------------------------------------- |
1468 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1469 | ;---------------------------------------------------------------- | |
37617bd8 L |
1470 | ;|SCF |--0-01|Set Carry Flag |CY=1 | |
1471 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1472 | ; | |
3c3744f1 | 1473 | ; |
fdcfcd44 | 1474 | do_op_scf: |
f1deeee3 | 1475 | do_z80_flags_clear_HN |
37617bd8 | 1476 | ori z_flags,(1<<ZFL_C) |
fdcfcd44 L |
1477 | ret |
1478 | ||
3c3744f1 L |
1479 | ;---------------------------------------------------------------- |
1480 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1481 | ;---------------------------------------------------------------- | |
f1deeee3 | 1482 | ;|CCF |--?-0*|Complement Carry Flag|CY=~CY, HC=previous CY| |
37617bd8 | 1483 | ;|----------|SZHP C|---------- 8080 ----------------------------| |
f1deeee3 | 1484 | ;|CCF |---- 1|Set Carry Flag |CY=1 | |
3c3744f1 | 1485 | ; |
fdcfcd44 | 1486 | do_op_ccf: |
37617bd8 | 1487 | do_z80_flags_clear_N |
f1deeee3 | 1488 | do_z80_flags_copy_HC |
fdcfcd44 L |
1489 | ldi temp,(1<<ZFL_C) |
1490 | eor z_flags,temp | |
1491 | ret | |
1492 | ||
3c3744f1 L |
1493 | ;---------------------------------------------------------------- |
1494 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1495 | ;---------------------------------------------------------------- | |
37617bd8 L |
1496 | ;|CPL |--1-1-|Complement |A=~A | |
1497 | ;|----------|SZHP C|---------- 8080 ----------------------------| | |
1498 | ;|CPL |---- -|Complement |A=~A | | |
1499 | ; | |
3c3744f1 | 1500 | ; |
fdcfcd44 | 1501 | do_op_cpl: |
1a1d6a78 | 1502 | com z_a |
37617bd8 | 1503 | do_z80_flags_set_HN |
fdcfcd44 L |
1504 | ret |
1505 | ||
37617bd8 | 1506 | |
3c3744f1 L |
1507 | ;---------------------------------------------------------------- |
1508 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1509 | ;---------------------------------------------------------------- | |
37617bd8 L |
1510 | ;|PUSH xx |------|Push |-[SP]=xx | |
1511 | ;|PUSH qq |------|Push |-[SP]=qq | | |
1512 | ; | |
3c3744f1 | 1513 | ; |
fdcfcd44 | 1514 | do_op_push16: |
9c15f366 L |
1515 | movw xl,z_spl |
1516 | sbiw x,1 | |
1517 | mem_write_s oph | |
1518 | sbiw x,1 | |
1519 | mem_write_s opl | |
1520 | movw z_spl,xl | |
fdcfcd44 L |
1521 | |
1522 | .if STACK_DBG | |
9c15f366 L |
1523 | printnewline |
1524 | printstring "Stack push " | |
1525 | movw temp,opl | |
846ffdc9 | 1526 | rcall printhexw |
9c15f366 L |
1527 | printstring ", SP is now " |
1528 | movw temp,z_spl | |
846ffdc9 | 1529 | rcall printhexw |
9c15f366 | 1530 | printstring ". " |
fdcfcd44 L |
1531 | .endif |
1532 | ||
1533 | ret | |
1534 | ||
3c3744f1 L |
1535 | ;---------------------------------------------------------------- |
1536 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1537 | ;---------------------------------------------------------------- | |
37617bd8 L |
1538 | ;|POP xx |------|Pop |xx=[SP]+ | |
1539 | ;|POP qq |------|Pop |qq=[SP]+ | | |
1540 | ; | |
3c3744f1 | 1541 | ; |
fdcfcd44 | 1542 | do_op_pop16: |
9c15f366 L |
1543 | movw x,z_spl |
1544 | mem_read_d opl | |
1545 | adiw x,1 | |
1546 | mem_read_d oph | |
1547 | adiw x,1 | |
1548 | movw z_spl,x | |
fdcfcd44 L |
1549 | |
1550 | .if STACK_DBG | |
9c15f366 L |
1551 | printnewline |
1552 | printstring "Stack pop " | |
846ffdc9 L |
1553 | movw temp,opl |
1554 | rcall printhexw | |
9c15f366 | 1555 | printstring ", SP is now " |
846ffdc9 L |
1556 | movw temp,z_spl |
1557 | rcall printhexw | |
9c15f366 | 1558 | printstring ". " |
fdcfcd44 L |
1559 | .endif |
1560 | ret | |
1561 | ||
3c3744f1 L |
1562 | ;---------------------------------------------------------------- |
1563 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1564 | ;---------------------------------------------------------------- | |
37617bd8 L |
1565 | ;|EX [SP],HL|------|Exchange |[SP]<->HL | |
1566 | ;|EX DE,HL |------|Exchange |DE<->HL | | |
f1deeee3 | 1567 | ;-----------------------------Z80-------------------------------- |
37617bd8 | 1568 | ; |
fdcfcd44 | 1569 | do_op_exhl: |
9c15f366 L |
1570 | lds temp,z_l |
1571 | lds temp2,z_h | |
1572 | sts z_l,opl | |
1573 | sts z_h,oph | |
1574 | movw opl,temp | |
fdcfcd44 L |
1575 | ret |
1576 | ||
3c3744f1 L |
1577 | ;---------------------------------------------------------------- |
1578 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1579 | ;---------------------------------------------------------------- | |
1580 | ; | |
37617bd8 | 1581 | ; TODO: Implement IFF1, IFF2 |
fdcfcd44 L |
1582 | do_op_di: |
1583 | ret | |
1584 | ||
3c3744f1 L |
1585 | ;---------------------------------------------------------------- |
1586 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1587 | ;---------------------------------------------------------------- | |
1588 | ; | |
37617bd8 | 1589 | ; TODO: Implement IFF1, IFF2 |
fdcfcd44 L |
1590 | do_op_ei: |
1591 | ret | |
1592 | ||
3c3744f1 L |
1593 | ;---------------------------------------------------------------- |
1594 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1595 | ;---------------------------------------------------------------- | |
37617bd8 L |
1596 | ;|CALL cc,nn|------|Conditional Call |If cc CALL | |
1597 | ;|JP cc,nn |------|Conditional Jump |If cc JP | | |
1598 | ;|RET cc |------|Conditional Return |If cc RET | | |
1599 | ; | |
3c3744f1 | 1600 | ; |
fdcfcd44 | 1601 | do_op_ifnz: |
64f220e6 L |
1602 | sbrs z_flags, ZFL_Z |
1603 | ret | |
db568140 L |
1604 | clr insdech |
1605 | clr insdecl | |
fdcfcd44 L |
1606 | ret |
1607 | ||
3c3744f1 L |
1608 | ;---------------------------------------------------------------- |
1609 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1610 | ;---------------------------------------------------------------- | |
37617bd8 L |
1611 | ;|CALL cc,nn|------|Conditional Call |If cc CALL | |
1612 | ;|JP cc,nn |------|Conditional Jump |If cc JP | | |
1613 | ;|RET cc |------|Conditional Return |If cc RET | | |
1614 | ; | |
3c3744f1 | 1615 | ; |
fdcfcd44 | 1616 | do_op_ifz: |
64f220e6 L |
1617 | sbrc z_flags, ZFL_Z |
1618 | ret | |
db568140 L |
1619 | clr insdech |
1620 | clr insdecl | |
fdcfcd44 L |
1621 | ret |
1622 | ||
3c3744f1 L |
1623 | ;---------------------------------------------------------------- |
1624 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1625 | ;---------------------------------------------------------------- | |
37617bd8 L |
1626 | ;|CALL cc,nn|------|Conditional Call |If cc CALL | |
1627 | ;|JP cc,nn |------|Conditional Jump |If cc JP | | |
1628 | ;|RET cc |------|Conditional Return |If cc RET | | |
1629 | ; | |
3c3744f1 | 1630 | ; |
fdcfcd44 | 1631 | do_op_ifnc: |
64f220e6 | 1632 | sbrs z_flags, ZFL_C |
37617bd8 | 1633 | ret |
db568140 L |
1634 | clr insdech |
1635 | clr insdecl | |
fdcfcd44 L |
1636 | ret |
1637 | ||
3c3744f1 L |
1638 | ;---------------------------------------------------------------- |
1639 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1640 | ;---------------------------------------------------------------- | |
37617bd8 L |
1641 | ;|CALL cc,nn|------|Conditional Call |If cc CALL | |
1642 | ;|JP cc,nn |------|Conditional Jump |If cc JP | | |
1643 | ;|RET cc |------|Conditional Return |If cc RET | | |
1644 | ; | |
3c3744f1 | 1645 | ; |
fdcfcd44 | 1646 | do_op_ifc: |
64f220e6 L |
1647 | sbrc z_flags, ZFL_C |
1648 | ret | |
db568140 L |
1649 | clr insdech |
1650 | clr insdecl | |
fdcfcd44 L |
1651 | ret |
1652 | ||
3c3744f1 L |
1653 | ;---------------------------------------------------------------- |
1654 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1655 | ;---------------------------------------------------------------- | |
37617bd8 L |
1656 | ;|CALL cc,nn|------|Conditional Call |If cc CALL | |
1657 | ;|JP cc,nn |------|Conditional Jump |If cc JP | | |
1658 | ;|RET cc |------|Conditional Return |If cc RET | | |
1659 | ; | |
3c3744f1 | 1660 | ; |
fdcfcd44 | 1661 | do_op_ifpo: |
37617bd8 | 1662 | sbrs z_flags, ZFL_P |
64f220e6 | 1663 | ret |
db568140 L |
1664 | clr insdech |
1665 | clr insdecl | |
fdcfcd44 L |
1666 | ret |
1667 | ||
3c3744f1 L |
1668 | ;---------------------------------------------------------------- |
1669 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1670 | ;---------------------------------------------------------------- | |
37617bd8 L |
1671 | ;|CALL cc,nn|------|Conditional Call |If cc CALL | |
1672 | ;|JP cc,nn |------|Conditional Jump |If cc JP | | |
1673 | ;|RET cc |------|Conditional Return |If cc RET | | |
1674 | ; | |
3c3744f1 | 1675 | ; |
fdcfcd44 | 1676 | do_op_ifpe: |
37617bd8 | 1677 | sbrc z_flags, ZFL_P |
64f220e6 | 1678 | ret |
db568140 L |
1679 | clr insdech |
1680 | clr insdecl | |
fdcfcd44 L |
1681 | ret |
1682 | ||
3c3744f1 L |
1683 | ;---------------------------------------------------------------- |
1684 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1685 | ;---------------------------------------------------------------- | |
37617bd8 L |
1686 | ;|CALL cc,nn|------|Conditional Call |If cc CALL | |
1687 | ;|JP cc,nn |------|Conditional Jump |If cc JP | | |
1688 | ;|RET cc |------|Conditional Return |If cc RET | | |
1689 | ; | |
3c3744f1 | 1690 | ; |
fdcfcd44 | 1691 | do_op_ifp: ;sign positive, aka s=0 |
64f220e6 | 1692 | sbrs z_flags, ZFL_S |
fdcfcd44 | 1693 | ret |
db568140 L |
1694 | clr insdech |
1695 | clr insdecl | |
fdcfcd44 L |
1696 | ret |
1697 | ||
3c3744f1 L |
1698 | ;---------------------------------------------------------------- |
1699 | ;|Mnemonic |SZHPNC|Description |Notes | | |
1700 | ;---------------------------------------------------------------- | |
37617bd8 L |
1701 | ;|CALL cc,nn|------|Conditional Call |If cc CALL | |
1702 | ;|JP cc,nn |------|Conditional Jump |If cc JP | | |
1703 | ;|RET cc |------|Conditional Return |If cc RET | | |
1704 | ; | |
3c3744f1 | 1705 | ; |
fdcfcd44 | 1706 | do_op_ifm: ;sign negative, aka s=1 |
64f220e6 | 1707 | sbrc z_flags, ZFL_S |
fdcfcd44 | 1708 | ret |
db568140 L |
1709 | clr insdech |
1710 | clr insdecl | |
fdcfcd44 L |
1711 | ret |
1712 | ||
fdcfcd44 | 1713 | |
fdcfcd44 L |
1714 | ; ----------------------- Opcode decoding ------------------------- |
1715 | ||
1716 | ; Lookup table for Z80 opcodes. Translates the first byte of the instruction word into three | |
1717 | ; operations: fetch, do something, store. | |
1718 | ; The table is made of 256 words. These 16-bit words consist of | |
1719 | ; the fetch operation (bit 0-4), the processing operation (bit 10-16) and the store | |
1720 | ; operation (bit 5-9). | |
99ed7199 | 1721 | .org (PC+255) & 0xff00 |
fdcfcd44 | 1722 | inst_table: |
99ed7199 L |
1723 | .dw (FETCH_NOP | OP_NOP | STORE_NOP) ; 00 NOP |
1724 | .dw (FETCH_DIR16| OP_NOP | STORE_BC ) ; 01 nn nn LD BC,nn | |
f1deeee3 | 1725 | .dw (FETCH_NOP | OP_NOP | STORE_MBC) ; 02 LD (BC),A |
99ed7199 L |
1726 | .dw (FETCH_BC | OP_INC16 | STORE_BC ) ; 03 INC BC |
1727 | .dw (FETCH_B | OP_INC | STORE_B ) ; 04 INC B | |
1728 | .dw (FETCH_B | OP_DEC | STORE_B ) ; 05 DEC B | |
1729 | .dw (FETCH_DIR8 | OP_NOP | STORE_B ) ; 06 nn LD B,n | |
f1deeee3 | 1730 | .dw (FETCH_NOP | OP_RLCA | STORE_NOP) ; 07 RLCA |
99ed7199 L |
1731 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; 08 EX AF,AF' (Z80) |
1732 | .dw (FETCH_BC | OP_ADDHL | STORE_HL ) ; 09 ADD HL,BC | |
f1deeee3 | 1733 | .dw (FETCH_MBC | OP_NOP | STORE_NOP) ; 0A LD A,(BC) |
99ed7199 L |
1734 | .dw (FETCH_BC | OP_DEC16 | STORE_BC ) ; 0B DEC BC |
1735 | .dw (FETCH_C | OP_INC | STORE_C ) ; 0C INC C | |
1736 | .dw (FETCH_C | OP_DEC | STORE_C ) ; 0D DEC C | |
1737 | .dw (FETCH_DIR8 | OP_NOP | STORE_C ) ; 0E nn LD C,n | |
f1deeee3 | 1738 | .dw (FETCH_NOP | OP_RRCA | STORE_NOP) ; 0F RRCA |
99ed7199 | 1739 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; 10 oo DJNZ o (Z80) |
fdcfcd44 | 1740 | .dw (FETCH_DIR16| OP_NOP | STORE_DE ) ; 11 nn nn LD DE,nn |
f1deeee3 | 1741 | .dw (FETCH_NOP | OP_NOP | STORE_MDE) ; 12 LD (DE),A |
99ed7199 | 1742 | .dw (FETCH_DE | OP_INC16 | STORE_DE ) ; 13 INC DE |
fdcfcd44 L |
1743 | .dw (FETCH_D | OP_INC | STORE_D ) ; 14 INC D |
1744 | .dw (FETCH_D | OP_DEC | STORE_D ) ; 15 DEC D | |
1745 | .dw (FETCH_DIR8 | OP_NOP | STORE_D ) ; 16 nn LD D,n | |
f1deeee3 | 1746 | .dw (FETCH_NOP | OP_RLA | STORE_NOP) ; 17 RLA |
fdcfcd44 L |
1747 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; 18 oo JR o (Z80) |
1748 | .dw (FETCH_DE | OP_ADDHL | STORE_HL ) ; 19 ADD HL,DE | |
f1deeee3 | 1749 | .dw (FETCH_MDE | OP_NOP | STORE_NOP) ; 1A LD A,(DE) |
fdcfcd44 L |
1750 | .dw (FETCH_DE | OP_DEC16 | STORE_DE ) ; 1B DEC DE |
1751 | .dw (FETCH_E | OP_INC | STORE_E ) ; 1C INC E | |
1752 | .dw (FETCH_E | OP_DEC | STORE_E ) ; 1D DEC E | |
1753 | .dw (FETCH_DIR8 | OP_NOP | STORE_E ) ; 1E nn LD E,n | |
f1deeee3 | 1754 | .dw (FETCH_NOP | OP_RRA | STORE_NOP) ; 1F RRA |
fdcfcd44 L |
1755 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; 20 oo JR NZ,o (Z80) |
1756 | .dw (FETCH_DIR16| OP_NOP | STORE_HL ) ; 21 nn nn LD HL,nn | |
1757 | .dw (FETCH_DIR16| OP_STHL | STORE_NOP) ; 22 nn nn LD (nn),HL | |
1758 | .dw (FETCH_HL | OP_INC16 | STORE_HL ) ; 23 INC HL | |
1759 | .dw (FETCH_H | OP_INC | STORE_H ) ; 24 INC H | |
1760 | .dw (FETCH_H | OP_DEC | STORE_H ) ; 25 DEC H | |
1761 | .dw (FETCH_DIR8 | OP_NOP | STORE_H ) ; 26 nn LD H,n | |
64f220e6 | 1762 | .dw (FETCH_A | OP_DA | STORE_A ) ; 27 DAA |
fdcfcd44 L |
1763 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; 28 oo JR Z,o (Z80) |
1764 | .dw (FETCH_HL | OP_ADDHL | STORE_HL ) ; 29 ADD HL,HL | |
1765 | .dw (FETCH_DIR16| OP_RMEM16 | STORE_HL ) ; 2A nn nn LD HL,(nn) | |
1766 | .dw (FETCH_HL | OP_DEC16 | STORE_HL ) ; 2B DEC HL | |
1767 | .dw (FETCH_L | OP_INC | STORE_L ) ; 2C INC L | |
1768 | .dw (FETCH_L | OP_DEC | STORE_L ) ; 2D DEC L | |
1769 | .dw (FETCH_DIR8 | OP_NOP | STORE_L ) ; 2E nn LD L,n | |
1a1d6a78 | 1770 | .dw (FETCH_NOP | OP_CPL | STORE_NOP) ; 2F CPL |
fdcfcd44 L |
1771 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; 30 oo JR NC,o (Z80) |
1772 | .dw (FETCH_DIR16| OP_NOP | STORE_SP ) ; 31 nn nn LD SP,nn | |
1773 | .dw (FETCH_DIR16| OP_NOP | STORE_AM ) ; 32 nn nn LD (nn),A | |
1774 | .dw (FETCH_SP | OP_INC16 | STORE_SP ) ; 33 INC SP | |
1775 | .dw (FETCH_MHL | OP_INC | STORE_MHL) ; 34 INC (HL) | |
1776 | .dw (FETCH_MHL | OP_DEC | STORE_MHL) ; 35 DEC (HL) | |
1777 | .dw (FETCH_DIR8 | OP_NOP | STORE_MHL) ; 36 nn LD (HL),n | |
1778 | .dw (FETCH_NOP | OP_SCF | STORE_NOP) ; 37 SCF | |
1779 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; 38 oo JR C,o (Z80) | |
1780 | .dw (FETCH_SP | OP_ADDHL | STORE_HL ) ; 39 ADD HL,SP | |
1781 | .dw (FETCH_DIR16| OP_RMEM8 | STORE_A ) ; 3A nn nn LD A,(nn) | |
1782 | .dw (FETCH_SP | OP_DEC16 | STORE_SP ) ; 3B DEC SP | |
d305f8e4 L |
1783 | .dw (FETCH_NOP | OP_INCA | STORE_NOP) ; 3C INC A |
1784 | .dw (FETCH_NOP | OP_DECA | STORE_NOP) ; 3D DEC A | |
fdcfcd44 L |
1785 | .dw (FETCH_DIR8 | OP_NOP | STORE_A ) ; 3E nn LD A,n |
1786 | .dw (FETCH_NOP | OP_CCF | STORE_NOP) ; 3F CCF (Complement Carry Flag, gvd) | |
1787 | .dw (FETCH_B | OP_NOP | STORE_B ) ; 40 LD B,r | |
1788 | .dw (FETCH_C | OP_NOP | STORE_B ) ; 41 LD B,r | |
1789 | .dw (FETCH_D | OP_NOP | STORE_B ) ; 42 LD B,r | |
1790 | .dw (FETCH_E | OP_NOP | STORE_B ) ; 43 LD B,r | |
1791 | .dw (FETCH_H | OP_NOP | STORE_B ) ; 44 LD B,r | |
1792 | .dw (FETCH_L | OP_NOP | STORE_B ) ; 45 LD B,r | |
1793 | .dw (FETCH_MHL | OP_NOP | STORE_B ) ; 46 LD B,r | |
64f220e6 | 1794 | .dw (FETCH_A | OP_NOP | STORE_B ) ; 47 LD B,r |
fdcfcd44 L |
1795 | .dw (FETCH_B | OP_NOP | STORE_C ) ; 48 LD C,r |
1796 | .dw (FETCH_C | OP_NOP | STORE_C ) ; 49 LD C,r | |
1797 | .dw (FETCH_D | OP_NOP | STORE_C ) ; 4A LD C,r | |
1798 | .dw (FETCH_E | OP_NOP | STORE_C ) ; 4B LD C,r | |
1799 | .dw (FETCH_H | OP_NOP | STORE_C ) ; 4C LD C,r | |
1800 | .dw (FETCH_L | OP_NOP | STORE_C ) ; 4D LD C,r | |
1801 | .dw (FETCH_MHL | OP_NOP | STORE_C ) ; 4E LD C,r | |
64f220e6 | 1802 | .dw (FETCH_A | OP_NOP | STORE_C ) ; 4F LD C,r |
fdcfcd44 L |
1803 | .dw (FETCH_B | OP_NOP | STORE_D ) ; 50 LD D,r |
1804 | .dw (FETCH_C | OP_NOP | STORE_D ) ; 51 LD D,r | |
1805 | .dw (FETCH_D | OP_NOP | STORE_D ) ; 52 LD D,r | |
1806 | .dw (FETCH_E | OP_NOP | STORE_D ) ; 53 LD D,r | |
1807 | .dw (FETCH_H | OP_NOP | STORE_D ) ; 54 LD D,r | |
1808 | .dw (FETCH_L | OP_NOP | STORE_D ) ; 55 LD D,r | |
1809 | .dw (FETCH_MHL | OP_NOP | STORE_D ) ; 56 LD D,r | |
64f220e6 | 1810 | .dw (FETCH_A | OP_NOP | STORE_D ) ; 57 LD D,r |
fdcfcd44 L |
1811 | .dw (FETCH_B | OP_NOP | STORE_E ) ; 58 LD E,r |
1812 | .dw (FETCH_C | OP_NOP | STORE_E ) ; 59 LD E,r | |
1813 | .dw (FETCH_D | OP_NOP | STORE_E ) ; 5A LD E,r | |
1814 | .dw (FETCH_E | OP_NOP | STORE_E ) ; 5B LD E,r | |
1815 | .dw (FETCH_H | OP_NOP | STORE_E ) ; 5C LD E,r | |
1816 | .dw (FETCH_L | OP_NOP | STORE_E ) ; 5D LD E,r | |
1817 | .dw (FETCH_MHL | OP_NOP | STORE_E ) ; 5E LD E,r | |
64f220e6 | 1818 | .dw (FETCH_A | OP_NOP | STORE_E ) ; 5F LD E,r |
fdcfcd44 L |
1819 | .dw (FETCH_B | OP_NOP | STORE_H ) ; 60 LD H,r |
1820 | .dw (FETCH_C | OP_NOP | STORE_H ) ; 61 LD H,r | |
1821 | .dw (FETCH_D | OP_NOP | STORE_H ) ; 62 LD H,r | |
1822 | .dw (FETCH_E | OP_NOP | STORE_H ) ; 63 LD H,r | |
1823 | .dw (FETCH_H | OP_NOP | STORE_H ) ; 64 LD H,r | |
1824 | .dw (FETCH_L | OP_NOP | STORE_H ) ; 65 LD H,r | |
1825 | .dw (FETCH_MHL | OP_NOP | STORE_H ) ; 66 LD H,r | |
64f220e6 | 1826 | .dw (FETCH_A | OP_NOP | STORE_H ) ; 67 LD H,r |
fdcfcd44 L |
1827 | .dw (FETCH_B | OP_NOP | STORE_L ) ; 68 LD L,r |
1828 | .dw (FETCH_C | OP_NOP | STORE_L ) ; 69 LD L,r | |
1829 | .dw (FETCH_D | OP_NOP | STORE_L ) ; 6A LD L,r | |
1830 | .dw (FETCH_E | OP_NOP | STORE_L ) ; 6B LD L,r | |
1831 | .dw (FETCH_H | OP_NOP | STORE_L ) ; 6C LD L,r | |
1832 | .dw (FETCH_L | OP_NOP | STORE_L ) ; 6D LD L,r | |
1833 | .dw (FETCH_MHL | OP_NOP | STORE_L ) ; 6E LD L,r | |
64f220e6 | 1834 | .dw (FETCH_A | OP_NOP | STORE_L ) ; 6F LD L,r |
fdcfcd44 L |
1835 | .dw (FETCH_B | OP_NOP | STORE_MHL) ; 70 LD (HL),r |
1836 | .dw (FETCH_C | OP_NOP | STORE_MHL) ; 71 LD (HL),r | |
1837 | .dw (FETCH_D | OP_NOP | STORE_MHL) ; 72 LD (HL),r | |
1838 | .dw (FETCH_E | OP_NOP | STORE_MHL) ; 73 LD (HL),r | |
1839 | .dw (FETCH_H | OP_NOP | STORE_MHL) ; 74 LD (HL),r | |
1840 | .dw (FETCH_L | OP_NOP | STORE_MHL) ; 75 LD (HL),r | |
1841 | .dw (FETCH_NOP | OP_NOP | STORE_NOP) ; 76 HALT | |
64f220e6 | 1842 | .dw (FETCH_A | OP_NOP | STORE_MHL) ; 77 LD (HL),r |
fdcfcd44 L |
1843 | .dw (FETCH_B | OP_NOP | STORE_A ) ; 78 LD A,r |
1844 | .dw (FETCH_C | OP_NOP | STORE_A ) ; 79 LD A,r | |
1845 | .dw (FETCH_D | OP_NOP | STORE_A ) ; 7A LD A,r | |
1846 | .dw (FETCH_E | OP_NOP | STORE_A ) ; 7B LD A,r | |
1847 | .dw (FETCH_H | OP_NOP | STORE_A ) ; 7C LD A,r | |
1848 | .dw (FETCH_L | OP_NOP | STORE_A ) ; 7D LD A,r | |
1849 | .dw (FETCH_MHL | OP_NOP | STORE_A ) ; 7E LD A,r | |
64f220e6 | 1850 | .dw (FETCH_A | OP_NOP | STORE_A ) ; 7F LD A,r |
1a1d6a78 L |
1851 | .dw (FETCH_B | OP_ADDA | STORE_NOP) ; 80 ADD A,r |
1852 | .dw (FETCH_C | OP_ADDA | STORE_NOP) ; 81 ADD A,r | |
1853 | .dw (FETCH_D | OP_ADDA | STORE_NOP) ; 82 ADD A,r | |
1854 | .dw (FETCH_E | OP_ADDA | STORE_NOP) ; 83 ADD A,r | |
1855 | .dw (FETCH_H | OP_ADDA | STORE_NOP) ; 84 ADD A,r | |
1856 | .dw (FETCH_L | OP_ADDA | STORE_NOP) ; 85 ADD A,r | |
1857 | .dw (FETCH_MHL | OP_ADDA | STORE_NOP) ; 86 ADD A,r | |
1858 | .dw (FETCH_A | OP_ADDA | STORE_NOP) ; 87 ADD A,r | |
1859 | .dw (FETCH_B | OP_ADCA | STORE_NOP) ; 88 ADC A,r | |
1860 | .dw (FETCH_C | OP_ADCA | STORE_NOP) ; 89 ADC A,r | |
1861 | .dw (FETCH_D | OP_ADCA | STORE_NOP) ; 8A ADC A,r | |
1862 | .dw (FETCH_E | OP_ADCA | STORE_NOP) ; 8B ADC A,r | |
1863 | .dw (FETCH_H | OP_ADCA | STORE_NOP) ; 8C ADC A,r | |
1864 | .dw (FETCH_L | OP_ADCA | STORE_NOP) ; 8D ADC A,r | |
1865 | .dw (FETCH_MHL | OP_ADCA | STORE_NOP) ; 8E ADC A,r | |
1866 | .dw (FETCH_A | OP_ADCA | STORE_NOP) ; 8F ADC A,r | |
1867 | .dw (FETCH_B | OP_SUBFA | STORE_NOP) ; 90 SUB A,r | |
1868 | .dw (FETCH_C | OP_SUBFA | STORE_NOP) ; 91 SUB A,r | |
1869 | .dw (FETCH_D | OP_SUBFA | STORE_NOP) ; 92 SUB A,r | |
1870 | .dw (FETCH_E | OP_SUBFA | STORE_NOP) ; 93 SUB A,r | |
1871 | .dw (FETCH_H | OP_SUBFA | STORE_NOP) ; 94 SUB A,r | |
1872 | .dw (FETCH_L | OP_SUBFA | STORE_NOP) ; 95 SUB A,r | |
1873 | .dw (FETCH_MHL | OP_SUBFA | STORE_NOP) ; 96 SUB A,r | |
1874 | .dw (FETCH_A | OP_SUBFA | STORE_NOP) ; 97 SUB A,r | |
1875 | .dw (FETCH_B | OP_SBCFA | STORE_NOP) ; 98 SBC A,r | |
1876 | .dw (FETCH_C | OP_SBCFA | STORE_NOP) ; 99 SBC A,r | |
1877 | .dw (FETCH_D | OP_SBCFA | STORE_NOP) ; 9A SBC A,r | |
1878 | .dw (FETCH_E | OP_SBCFA | STORE_NOP) ; 9B SBC A,r | |
1879 | .dw (FETCH_H | OP_SBCFA | STORE_NOP) ; 9C SBC A,r | |
1880 | .dw (FETCH_L | OP_SBCFA | STORE_NOP) ; 9D SBC A,r | |
1881 | .dw (FETCH_MHL | OP_SBCFA | STORE_NOP) ; 9E SBC A,r | |
1882 | .dw (FETCH_A | OP_SBCFA | STORE_NOP) ; 9F SBC A,r | |
1883 | .dw (FETCH_B | OP_ANDA | STORE_NOP) ; A0 AND A,r | |
1884 | .dw (FETCH_C | OP_ANDA | STORE_NOP) ; A1 AND A,r | |
1885 | .dw (FETCH_D | OP_ANDA | STORE_NOP) ; A2 AND A,r | |
1886 | .dw (FETCH_E | OP_ANDA | STORE_NOP) ; A3 AND A,r | |
1887 | .dw (FETCH_H | OP_ANDA | STORE_NOP) ; A4 AND A,r | |
1888 | .dw (FETCH_L | OP_ANDA | STORE_NOP) ; A5 AND A,r | |
1889 | .dw (FETCH_MHL | OP_ANDA | STORE_NOP) ; A6 AND A,r | |
1890 | .dw (FETCH_A | OP_ANDA | STORE_NOP) ; A7 AND A,r | |
1891 | .dw (FETCH_B | OP_XORA | STORE_NOP) ; A8 XOR A,r | |
1892 | .dw (FETCH_C | OP_XORA | STORE_NOP) ; A9 XOR A,r | |
1893 | .dw (FETCH_D | OP_XORA | STORE_NOP) ; AA XOR A,r | |
1894 | .dw (FETCH_E | OP_XORA | STORE_NOP) ; AB XOR A,r | |
1895 | .dw (FETCH_H | OP_XORA | STORE_NOP) ; AC XOR A,r | |
1896 | .dw (FETCH_L | OP_XORA | STORE_NOP) ; AD XOR A,r | |
1897 | .dw (FETCH_MHL | OP_XORA | STORE_NOP) ; AE XOR A,r | |
1898 | .dw (FETCH_A | OP_XORA | STORE_NOP) ; AF XOR A,r | |
1899 | .dw (FETCH_B | OP_ORA | STORE_NOP) ; B0 OR A,r | |
1900 | .dw (FETCH_C | OP_ORA | STORE_NOP) ; B1 OR A,r | |
1901 | .dw (FETCH_D | OP_ORA | STORE_NOP) ; B2 OR A,r | |
1902 | .dw (FETCH_E | OP_ORA | STORE_NOP) ; B3 OR A,r | |
1903 | .dw (FETCH_H | OP_ORA | STORE_NOP) ; B4 OR A,r | |
1904 | .dw (FETCH_L | OP_ORA | STORE_NOP) ; B5 OR A,r | |
1905 | .dw (FETCH_MHL | OP_ORA | STORE_NOP) ; B6 OR A,r | |
1906 | .dw (FETCH_A | OP_ORA | STORE_NOP) ; B7 OR A,r | |
1907 | .dw (FETCH_B | OP_CPFA | STORE_NOP) ; B8 CP A,r | |
1908 | .dw (FETCH_C | OP_CPFA | STORE_NOP) ; B9 CP A,r | |
1909 | .dw (FETCH_D | OP_CPFA | STORE_NOP) ; BA CP A,r | |
1910 | .dw (FETCH_E | OP_CPFA | STORE_NOP) ; BB CP A,r | |
1911 | .dw (FETCH_H | OP_CPFA | STORE_NOP) ; BC CP A,r | |
1912 | .dw (FETCH_L | OP_CPFA | STORE_NOP) ; BD CP A,r | |
1913 | .dw (FETCH_MHL | OP_CPFA | STORE_NOP) ; BE CP A,r | |
1914 | .dw (FETCH_A | OP_CPFA | STORE_NOP) ; BF CP A,r | |
fdcfcd44 L |
1915 | .dw (FETCH_NOP | OP_IFNZ | STORE_RET) ; C0 RET NZ |
1916 | .dw (FETCH_NOP | OP_POP16 | STORE_BC ) ; C1 POP BC | |
1917 | .dw (FETCH_DIR16| OP_IFNZ | STORE_PC ) ; C2 nn nn JP NZ,nn | |
1918 | .dw (FETCH_DIR16| OP_NOP | STORE_PC ) ; C3 nn nn JP nn | |
1919 | .dw (FETCH_DIR16| OP_IFNZ | STORE_CALL) ; C4 nn nn CALL NZ,nn | |
1920 | .dw (FETCH_BC | OP_PUSH16 | STORE_NOP) ; C5 PUSH BC | |
1a1d6a78 | 1921 | .dw (FETCH_DIR8 | OP_ADDA | STORE_NOP) ; C6 nn ADD A,n |
fdcfcd44 L |
1922 | .dw (FETCH_RST | OP_NOP | STORE_CALL) ; C7 RST 0 |
1923 | .dw (FETCH_NOP | OP_IFZ | STORE_RET) ; C8 RET Z | |
1924 | .dw (FETCH_NOP | OP_NOP | STORE_RET) ; C9 RET | |
1925 | .dw (FETCH_DIR16| OP_IFZ | STORE_PC ) ; CA nn nn JP Z,nn | |
1926 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; CB (Z80 specific) | |
1927 | .dw (FETCH_DIR16| OP_IFZ | STORE_CALL) ; CC nn nn CALL Z,nn | |
1928 | .dw (FETCH_DIR16| OP_NOP | STORE_CALL) ; CD nn nn CALL nn | |
1a1d6a78 | 1929 | .dw (FETCH_DIR8 | OP_ADCA | STORE_NOP) ; CE nn ADC A,n |
fdcfcd44 L |
1930 | .dw (FETCH_RST | OP_NOP | STORE_CALL) ; CF RST 8H |
1931 | .dw (FETCH_NOP | OP_IFNC | STORE_RET) ; D0 RET NC | |
1932 | .dw (FETCH_NOP | OP_POP16 | STORE_DE ) ; D1 POP DE | |
1933 | .dw (FETCH_DIR16| OP_IFNC | STORE_PC ) ; D2 nn nn JP NC,nn | |
1934 | .dw (FETCH_DIR8 | OP_OUTA | STORE_NOP) ; D3 nn OUT (n),A | |
1935 | .dw (FETCH_DIR16| OP_IFNC | STORE_CALL) ; D4 nn nn CALL NC,nn | |
1936 | .dw (FETCH_DE | OP_PUSH16 | STORE_NOP) ; D5 PUSH DE | |
1a1d6a78 | 1937 | .dw (FETCH_DIR8 | OP_SUBFA | STORE_NOP) ; D6 nn SUB n |
fdcfcd44 L |
1938 | .dw (FETCH_RST | OP_NOP | STORE_CALL) ; D7 RST 10H |
1939 | .dw (FETCH_NOP | OP_IFC | STORE_RET) ; D8 RET C | |
99ed7199 | 1940 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; D9 EXX (Z80) |
fdcfcd44 L |
1941 | .dw (FETCH_DIR16| OP_IFC | STORE_PC ) ; DA nn nn JP C,nn |
1942 | .dw (FETCH_DIR8 | OP_IN | STORE_A ) ; DB nn IN A,(n) | |
1943 | .dw (FETCH_DIR16| OP_IFC | STORE_CALL) ; DC nn nn CALL C,nn | |
1944 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; DD (Z80) | |
1a1d6a78 | 1945 | .dw (FETCH_DIR8 | OP_SBCFA | STORE_NOP) ; DE nn SBC A,n |
fdcfcd44 L |
1946 | .dw (FETCH_RST | OP_NOP | STORE_CALL) ; DF RST 18H |
1947 | .dw (FETCH_NOP | OP_IFPO | STORE_RET) ; E0 RET PO | |
1948 | .dw (FETCH_NOP | OP_POP16 | STORE_HL ) ; E1 POP HL | |
1949 | .dw (FETCH_DIR16| OP_IFPO | STORE_PC ) ; E2 nn nn JP PO,nn | |
1950 | .dw (FETCH_MSP | OP_EXHL | STORE_MSP) ; E3 EX (SP),HL | |
1951 | .dw (FETCH_DIR16| OP_IFPO | STORE_CALL) ; E4 nn nn CALL PO,nn | |
1952 | .dw (FETCH_HL | OP_PUSH16 | STORE_NOP) ; E5 PUSH HL | |
1a1d6a78 | 1953 | .dw (FETCH_DIR8 | OP_ANDA | STORE_NOP) ; E6 nn AND n |
fdcfcd44 L |
1954 | .dw (FETCH_RST | OP_NOP | STORE_CALL) ; E7 RST 20H |
1955 | .dw (FETCH_NOP | OP_IFPE | STORE_RET) ; E8 RET PE | |
1956 | .dw (FETCH_HL | OP_NOP | STORE_PC ) ; E9 JP (HL) | |
1957 | .dw (FETCH_DIR16| OP_IFPE | STORE_PC ) ; EA nn nn JP PE,nn | |
1958 | .dw (FETCH_DE | OP_EXHL | STORE_DE ) ; EB EX DE,HL | |
1959 | .dw (FETCH_DIR16| OP_IFPE | STORE_CALL) ; EC nn nn CALL PE,nn | |
1960 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; ED (Z80 specific) | |
1a1d6a78 | 1961 | .dw (FETCH_DIR8 | OP_XORA | STORE_NOP) ; EE nn XOR n |
fdcfcd44 L |
1962 | .dw (FETCH_RST | OP_NOP | STORE_CALL) ; EF RST 28H |
1963 | .dw (FETCH_NOP | OP_IFP | STORE_RET) ; F0 RET P | |
1964 | .dw (FETCH_NOP | OP_POP16 | STORE_AF ) ; F1 POP AF | |
1965 | .dw (FETCH_DIR16| OP_IFP | STORE_PC ) ; F2 nn nn JP P,nn | |
1966 | .dw (FETCH_NOP | OP_DI | STORE_NOP) ; F3 DI | |
1967 | .dw (FETCH_DIR16| OP_IFP | STORE_CALL) ; F4 nn nn CALL P,nn | |
1968 | .dw (FETCH_AF | OP_PUSH16 | STORE_NOP) ; F5 PUSH AF | |
1a1d6a78 | 1969 | .dw (FETCH_DIR8 | OP_ORA | STORE_NOP) ; F6 nn OR n |
fdcfcd44 L |
1970 | .dw (FETCH_RST | OP_NOP | STORE_CALL) ; F7 RST 30H |
1971 | .dw (FETCH_NOP | OP_IFM | STORE_RET) ; F8 RET M | |
1972 | .dw (FETCH_HL | OP_NOP | STORE_SP ) ; F9 LD SP,HL | |
1973 | .dw (FETCH_DIR16| OP_IFM | STORE_PC ) ; FA nn nn JP M,nn | |
1974 | .dw (FETCH_NOP | OP_EI | STORE_NOP) ; FB EI | |
1975 | .dw (FETCH_DIR16| OP_IFM | STORE_CALL) ; FC nn nn CALL M,nn | |
1976 | .dw (FETCH_NOP | OP_INV | STORE_NOP) ; FD (Z80 specific) | |
1a1d6a78 | 1977 | .dw (FETCH_DIR8 | OP_CPFA | STORE_NOP) ; FE nn CP n |
fdcfcd44 | 1978 | .dw (FETCH_RST | OP_NOP | STORE_CALL) ; FF RST 38H |
37617bd8 | 1979 | |
9c15f366 L |
1980 | ;---------------------------------------------------------------- |
1981 | ; Lookup table, stolen from z80ex, Z80 emulation library. | |
1982 | ; http://z80ex.sourceforge.net/ | |
1983 | ||
1984 | ; The S, Z, 5 and 3 bits and the parity of the lookup value | |
1985 | ||
1986 | .org (PC+255) & 0xff00 | |
1987 | sz53p_tab: | |
1988 | .db 0x44,0x00,0x00,0x04,0x00,0x04,0x04,0x00 | |
1989 | .db 0x08,0x0c,0x0c,0x08,0x0c,0x08,0x08,0x0c | |
1990 | .db 0x00,0x04,0x04,0x00,0x04,0x00,0x00,0x04 | |
1991 | .db 0x0c,0x08,0x08,0x0c,0x08,0x0c,0x0c,0x08 | |
1992 | .db 0x20,0x24,0x24,0x20,0x24,0x20,0x20,0x24 | |
1993 | .db 0x2c,0x28,0x28,0x2c,0x28,0x2c,0x2c,0x28 | |
1994 | .db 0x24,0x20,0x20,0x24,0x20,0x24,0x24,0x20 | |
1995 | .db 0x28,0x2c,0x2c,0x28,0x2c,0x28,0x28,0x2c | |
1996 | .db 0x00,0x04,0x04,0x00,0x04,0x00,0x00,0x04 | |
1997 | .db 0x0c,0x08,0x08,0x0c,0x08,0x0c,0x0c,0x08 | |
1998 | .db 0x04,0x00,0x00,0x04,0x00,0x04,0x04,0x00 | |
1999 | .db 0x08,0x0c,0x0c,0x08,0x0c,0x08,0x08,0x0c | |
2000 | .db 0x24,0x20,0x20,0x24,0x20,0x24,0x24,0x20 | |
2001 | .db 0x28,0x2c,0x2c,0x28,0x2c,0x28,0x28,0x2c | |
2002 | .db 0x20,0x24,0x24,0x20,0x24,0x20,0x20,0x24 | |
2003 | .db 0x2c,0x28,0x28,0x2c,0x28,0x2c,0x2c,0x28 | |
2004 | .db 0x80,0x84,0x84,0x80,0x84,0x80,0x80,0x84 | |
2005 | .db 0x8c,0x88,0x88,0x8c,0x88,0x8c,0x8c,0x88 | |
2006 | .db 0x84,0x80,0x80,0x84,0x80,0x84,0x84,0x80 | |
2007 | .db 0x88,0x8c,0x8c,0x88,0x8c,0x88,0x88,0x8c | |
2008 | .db 0xa4,0xa0,0xa0,0xa4,0xa0,0xa4,0xa4,0xa0 | |
2009 | .db 0xa8,0xac,0xac,0xa8,0xac,0xa8,0xa8,0xac | |
2010 | .db 0xa0,0xa4,0xa4,0xa0,0xa4,0xa0,0xa0,0xa4 | |
2011 | .db 0xac,0xa8,0xa8,0xac,0xa8,0xac,0xac,0xa8 | |
2012 | .db 0x84,0x80,0x80,0x84,0x80,0x84,0x84,0x80 | |
2013 | .db 0x88,0x8c,0x8c,0x88,0x8c,0x88,0x88,0x8c | |
2014 | .db 0x80,0x84,0x84,0x80,0x84,0x80,0x80,0x84 | |
2015 | .db 0x8c,0x88,0x88,0x8c,0x88,0x8c,0x8c,0x88 | |
2016 | .db 0xa0,0xa4,0xa4,0xa0,0xa4,0xa0,0xa0,0xa4 | |
2017 | .db 0xac,0xa8,0xa8,0xac,0xa8,0xac,0xac,0xa8 | |
2018 | .db 0xa4,0xa0,0xa0,0xa4,0xa0,0xa4,0xa4,0xa0 | |
2019 | .db 0xa8,0xac,0xac,0xa8,0xac,0xa8,0xa8,0xac | |
2020 | ||
37617bd8 | 2021 | ; vim:set ts=8 noet nowrap |
9c15f366 | 2022 |