cc68a136 |
1 | // This is part of Pico Library\r |
2 | \r |
3 | // (c) Copyright 2004 Dave, All rights reserved.\r |
b837b69b |
4 | // (c) Copyright 2007 notaz, All rights reserved.\r |
cc68a136 |
5 | // Free for non-commercial use.\r |
6 | \r |
7 | // For commercial use, separate licencing terms must be obtained.\r |
8 | \r |
9 | // A68K no longer supported here\r |
10 | \r |
11 | //#define __debug_io\r |
12 | \r |
13 | #include "../PicoInt.h"\r |
14 | \r |
15 | #include "../sound/sound.h"\r |
16 | #include "../sound/ym2612.h"\r |
17 | #include "../sound/sn76496.h"\r |
18 | \r |
cb4a513a |
19 | #include "gfx_cd.h"\r |
4f265db7 |
20 | #include "pcm.h"\r |
cb4a513a |
21 | \r |
fa1e5e29 |
22 | #include "cell_map.c"\r |
23 | \r |
cc68a136 |
24 | typedef unsigned char u8;\r |
25 | typedef unsigned short u16;\r |
26 | typedef unsigned int u32;\r |
27 | \r |
28 | //#define __debug_io\r |
29 | //#define __debug_io2\r |
d1df8786 |
30 | //#define rdprintf dprintf\r |
31 | #define rdprintf(...)\r |
68cba51e |
32 | //#define wrdprintf dprintf\r |
913ef4b7 |
33 | #define wrdprintf(...)\r |
cc68a136 |
34 | \r |
35 | // -----------------------------------------------------------------\r |
36 | \r |
cc68a136 |
37 | \r |
cb4a513a |
38 | static u32 m68k_reg_read16(u32 a)\r |
cc68a136 |
39 | {\r |
40 | u32 d=0;\r |
41 | a &= 0x3e;\r |
672ad671 |
42 | // dprintf("m68k_regs r%2i: [%02x] @%06x", realsize&~1, a+(realsize&1), SekPc);\r |
cc68a136 |
43 | \r |
44 | switch (a) {\r |
672ad671 |
45 | case 0:\r |
c459aefd |
46 | d = ((Pico_mcd->s68k_regs[0x33]<<13)&0x8000) | Pico_mcd->m.busreq; // here IFL2 is always 0, just like in Gens\r |
672ad671 |
47 | goto end;\r |
cc68a136 |
48 | case 2:\r |
672ad671 |
49 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0xc7);\r |
1cd356a3 |
50 | dprintf("m68k_regs r3: %02x @%06x", (u8)d, SekPcS68k);\r |
cc68a136 |
51 | goto end;\r |
c459aefd |
52 | case 4:\r |
53 | d = Pico_mcd->s68k_regs[4]<<8;\r |
54 | goto end;\r |
55 | case 6:\r |
913ef4b7 |
56 | d = *(u16 *)(Pico_mcd->bios + 0x72);\r |
c459aefd |
57 | goto end;\r |
cc68a136 |
58 | case 8:\r |
cc68a136 |
59 | d = Read_CDC_Host(0);\r |
60 | goto end;\r |
c459aefd |
61 | case 0xA:\r |
fa1e5e29 |
62 | dprintf("m68k FIXME: reserved read");\r |
c459aefd |
63 | goto end;\r |
cc68a136 |
64 | case 0xC:\r |
d1df8786 |
65 | dprintf("m68k stopwatch timer read");\r |
1cd356a3 |
66 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
67 | goto end;\r |
cc68a136 |
68 | }\r |
69 | \r |
cc68a136 |
70 | if (a < 0x30) {\r |
71 | // comm flag/cmd/status (0xE-0x2F)\r |
72 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
73 | goto end;\r |
74 | }\r |
75 | \r |
fa1e5e29 |
76 | dprintf("m68k_regs FIXME invalid read @ %02x", a);\r |
cc68a136 |
77 | \r |
78 | end:\r |
79 | \r |
672ad671 |
80 | // dprintf("ret = %04x", d);\r |
cc68a136 |
81 | return d;\r |
82 | }\r |
83 | \r |
cb4a513a |
84 | static void m68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
85 | {\r |
86 | a &= 0x3f;\r |
672ad671 |
87 | // dprintf("m68k_regs w%2i: [%02x] %02x @%06x", realsize, a, d, SekPc);\r |
cc68a136 |
88 | \r |
89 | switch (a) {\r |
90 | case 0:\r |
672ad671 |
91 | d &= 1;\r |
cc68a136 |
92 | if ((d&1) && (Pico_mcd->s68k_regs[0x33]&(1<<2))) { dprintf("m68k: s68k irq 2"); SekInterruptS68k(2); }\r |
c459aefd |
93 | return;\r |
cc68a136 |
94 | case 1:\r |
672ad671 |
95 | d &= 3;\r |
51a902ae |
96 | if (!(d&1)) Pico_mcd->m.state_flags |= 1; // reset pending, needed to be sure we fetch the right vectors on reset\r |
c459aefd |
97 | if ( (Pico_mcd->m.busreq&1) != (d&1)) dprintf("m68k: s68k reset %i", !(d&1));\r |
98 | if ( (Pico_mcd->m.busreq&2) != (d&2)) dprintf("m68k: s68k brq %i", (d&2)>>1);\r |
51a902ae |
99 | if ((Pico_mcd->m.state_flags&1) && (d&3)==1) {\r |
cc68a136 |
100 | SekResetS68k(); // S68k comes out of RESET or BRQ state\r |
51a902ae |
101 | Pico_mcd->m.state_flags&=~1;\r |
672ad671 |
102 | dprintf("m68k: resetting s68k, cycles=%i", SekCyclesLeft);\r |
cc68a136 |
103 | }\r |
c459aefd |
104 | Pico_mcd->m.busreq = d;\r |
105 | return;\r |
672ad671 |
106 | case 2:\r |
107 | Pico_mcd->s68k_regs[2] = d; // really use s68k side register\r |
108 | return;\r |
cc68a136 |
109 | case 3:\r |
bf098bc5 |
110 | dprintf("m68k_regs w3: %02x @%06x", (u8)d, SekPc);\r |
672ad671 |
111 | d &= 0xc2;\r |
112 | if ((Pico_mcd->s68k_regs[3]>>6) != ((d>>6)&3))\r |
113 | dprintf("m68k: prg bank: %i -> %i", (Pico_mcd->s68k_regs[a]>>6), ((d>>6)&3));\r |
114 | //if ((Pico_mcd->s68k_regs[3]&4) != (d&4)) dprintf("m68k: ram mode %i mbit", (d&4) ? 1 : 2);\r |
115 | //if ((Pico_mcd->s68k_regs[3]&2) != (d&2)) dprintf("m68k: %s", (d&4) ? ((d&2) ? "word swap req" : "noop?") :\r |
116 | // ((d&2) ? "word ram to s68k" : "word ram to m68k"));\r |
117 | d |= Pico_mcd->s68k_regs[3]&0x1d;\r |
d0d47c5b |
118 | if (!(d & 4) && (d & 2)) d &= ~1; // return word RAM to s68k in 2M mode\r |
672ad671 |
119 | Pico_mcd->s68k_regs[3] = d; // really use s68k side register\r |
120 | return;\r |
c459aefd |
121 | case 6:\r |
d1df8786 |
122 | Pico_mcd->bios[0x72 + 1] = d; // simple hint vector changer\r |
c459aefd |
123 | return;\r |
124 | case 7:\r |
d1df8786 |
125 | Pico_mcd->bios[0x72] = d;\r |
913ef4b7 |
126 | dprintf("hint vector set to %08x", PicoRead32(0x70));\r |
c459aefd |
127 | return;\r |
cc68a136 |
128 | case 0xe:\r |
672ad671 |
129 | //dprintf("m68k: comm flag: %02x", d);\r |
cc68a136 |
130 | Pico_mcd->s68k_regs[0xe] = d;\r |
c459aefd |
131 | return;\r |
672ad671 |
132 | }\r |
133 | \r |
134 | if ((a&0xf0) == 0x10) {\r |
cc68a136 |
135 | Pico_mcd->s68k_regs[a] = d;\r |
672ad671 |
136 | return;\r |
cc68a136 |
137 | }\r |
138 | \r |
fa1e5e29 |
139 | dprintf("m68k FIXME: invalid write? [%02x] %02x", a, d);\r |
cc68a136 |
140 | }\r |
141 | \r |
142 | \r |
913ef4b7 |
143 | #define READ_FONT_DATA(basemask) \\r |
144 | { \\r |
145 | unsigned int fnt = *(unsigned int *)(Pico_mcd->s68k_regs + 0x4c); \\r |
146 | unsigned int col0 = (fnt >> 8) & 0x0f, col1 = (fnt >> 12) & 0x0f; \\r |
147 | if (fnt & (basemask << 0)) d = col1 ; else d = col0; \\r |
148 | if (fnt & (basemask << 1)) d |= col1 << 4; else d |= col0 << 4; \\r |
149 | if (fnt & (basemask << 2)) d |= col1 << 8; else d |= col0 << 8; \\r |
150 | if (fnt & (basemask << 3)) d |= col1 << 12; else d |= col0 << 12; \\r |
151 | }\r |
152 | \r |
cc68a136 |
153 | \r |
cb4a513a |
154 | static u32 s68k_reg_read16(u32 a)\r |
cc68a136 |
155 | {\r |
156 | u32 d=0;\r |
cc68a136 |
157 | \r |
672ad671 |
158 | // dprintf("s68k_regs r%2i: [%02x] @ %06x", realsize&~1, a+(realsize&1), SekPcS68k);\r |
cc68a136 |
159 | \r |
160 | switch (a) {\r |
161 | case 0:\r |
cb4a513a |
162 | d = ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state\r |
c459aefd |
163 | goto end;\r |
672ad671 |
164 | case 2:\r |
165 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0x1f);\r |
bf098bc5 |
166 | dprintf("s68k_regs r3: %02x @%06x", (u8)d, SekPc);\r |
672ad671 |
167 | goto end;\r |
cc68a136 |
168 | case 6:\r |
169 | d = CDC_Read_Reg();\r |
170 | goto end;\r |
171 | case 8:\r |
cb4a513a |
172 | d = Read_CDC_Host(1); // Gens returns 0 here on byte reads\r |
cc68a136 |
173 | goto end;\r |
174 | case 0xC:\r |
d1df8786 |
175 | dprintf("s68k stopwatch timer read");\r |
4f265db7 |
176 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
177 | goto end;\r |
d1df8786 |
178 | case 0x30:\r |
179 | dprintf("s68k int3 timer read");\r |
cc68a136 |
180 | break;\r |
181 | case 0x34: // fader\r |
182 | d = 0; // no busy bit\r |
183 | goto end;\r |
913ef4b7 |
184 | case 0x50: // font data (check: Lunar 2, Silpheed)\r |
185 | READ_FONT_DATA(0x00100000);\r |
186 | goto end;\r |
187 | case 0x52:\r |
188 | READ_FONT_DATA(0x00010000);\r |
189 | goto end;\r |
190 | case 0x54:\r |
191 | READ_FONT_DATA(0x10000000);\r |
192 | goto end;\r |
193 | case 0x56:\r |
194 | READ_FONT_DATA(0x01000000);\r |
195 | goto end;\r |
cc68a136 |
196 | }\r |
197 | \r |
198 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
199 | \r |
200 | end:\r |
201 | \r |
672ad671 |
202 | // dprintf("ret = %04x", d);\r |
cc68a136 |
203 | \r |
204 | return d;\r |
205 | }\r |
206 | \r |
cb4a513a |
207 | static void s68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
208 | {\r |
672ad671 |
209 | //dprintf("s68k_regs w%2i: [%02x] %02x @ %06x", realsize, a, d, SekPcS68k);\r |
cc68a136 |
210 | \r |
211 | // TODO: review against Gens\r |
212 | switch (a) {\r |
672ad671 |
213 | case 2:\r |
214 | return; // only m68k can change WP\r |
fa1e5e29 |
215 | case 3: {\r |
216 | int dold = Pico_mcd->s68k_regs[3];\r |
bf098bc5 |
217 | dprintf("s68k_regs w3: %02x @%06x", (u8)d, SekPc);\r |
672ad671 |
218 | d &= 0x1d;\r |
d0d47c5b |
219 | if (d&4) {\r |
fa1e5e29 |
220 | d |= dold&0xc2;\r |
221 | if ((d ^ dold) & 5) d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit\r |
222 | if (!(dold & 4)) {\r |
223 | dprintf("wram mode 2M->1M");\r |
224 | wram_2M_to_1M(Pico_mcd->word_ram2M);\r |
225 | }\r |
d0d47c5b |
226 | } else {\r |
227 | d |= Pico_mcd->s68k_regs[3]&0xc3;\r |
228 | if (d&1) d &= ~2; // return word RAM to m68k in 2M mode\r |
fa1e5e29 |
229 | if (dold & 4) {\r |
230 | dprintf("wram mode 1M->2M");\r |
231 | wram_1M_to_2M(Pico_mcd->word_ram2M);\r |
232 | }\r |
d0d47c5b |
233 | }\r |
672ad671 |
234 | break;\r |
fa1e5e29 |
235 | }\r |
cc68a136 |
236 | case 4:\r |
237 | dprintf("s68k CDC dest: %x", d&7);\r |
238 | Pico_mcd->s68k_regs[4] = (Pico_mcd->s68k_regs[4]&0xC0) | (d&7); // CDC mode\r |
239 | return;\r |
240 | case 5:\r |
c459aefd |
241 | //dprintf("s68k CDC reg addr: %x", d&0xf);\r |
cc68a136 |
242 | break;\r |
243 | case 7:\r |
244 | CDC_Write_Reg(d);\r |
245 | return;\r |
246 | case 0xa:\r |
247 | dprintf("s68k set CDC dma addr");\r |
248 | break;\r |
d1df8786 |
249 | case 0xc:\r |
4f265db7 |
250 | case 0xd:\r |
d1df8786 |
251 | dprintf("s68k set stopwatch timer");\r |
4f265db7 |
252 | Pico_mcd->m.timer_stopwatch = 0;\r |
253 | return;\r |
1cd356a3 |
254 | case 0xe:\r |
255 | Pico_mcd->s68k_regs[0Xf] = (d>>1) | (d<<7); // ror8, Gens note: Dragons lair\r |
256 | Pico_mcd->m.timer_stopwatch = 0;\r |
257 | return;\r |
d1df8786 |
258 | case 0x31:\r |
4f265db7 |
259 | dprintf("s68k set int3 timer: %02x", d);\r |
260 | Pico_mcd->m.timer_int3 = d << 16;\r |
d1df8786 |
261 | break;\r |
cc68a136 |
262 | case 0x33: // IRQ mask\r |
263 | dprintf("s68k irq mask: %02x", d);\r |
264 | if ((d&(1<<4)) && (Pico_mcd->s68k_regs[0x37]&4) && !(Pico_mcd->s68k_regs[0x33]&(1<<4))) {\r |
265 | CDD_Export_Status();\r |
cc68a136 |
266 | }\r |
267 | break;\r |
268 | case 0x34: // fader\r |
269 | Pico_mcd->s68k_regs[a] = (u8) d & 0x7f;\r |
270 | return;\r |
672ad671 |
271 | case 0x36:\r |
272 | return; // d/m bit is unsetable\r |
273 | case 0x37: {\r |
274 | u32 d_old = Pico_mcd->s68k_regs[0x37];\r |
275 | Pico_mcd->s68k_regs[0x37] = d&7;\r |
276 | if ((d&4) && !(d_old&4)) {\r |
cc68a136 |
277 | CDD_Export_Status();\r |
cc68a136 |
278 | }\r |
672ad671 |
279 | return;\r |
280 | }\r |
cc68a136 |
281 | case 0x4b:\r |
282 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
283 | CDD_Import_Command();\r |
284 | return;\r |
285 | }\r |
286 | \r |
1cd356a3 |
287 | if ((a&0x1f0) == 0x10 || (a >= 0x38 && a < 0x42))\r |
cc68a136 |
288 | {\r |
fa1e5e29 |
289 | dprintf("s68k FIXME: invalid write @ %02x?", a);\r |
cc68a136 |
290 | return;\r |
291 | }\r |
292 | \r |
293 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
294 | }\r |
295 | \r |
296 | \r |
297 | \r |
fa1e5e29 |
298 | static u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
299 | {\r |
300 | u32 d=0;\r |
301 | \r |
672ad671 |
302 | if ((a&0xffffc0)==0xa12000) {\r |
cb4a513a |
303 | d=m68k_reg_read16(a);\r |
672ad671 |
304 | goto end;\r |
305 | }\r |
cc68a136 |
306 | \r |
fa1e5e29 |
307 | dprintf("m68k FIXME: unusual r%i: %06x @%06x", realsize&~1, (a&0xfffffe)+(realsize&1), SekPc);\r |
cc68a136 |
308 | \r |
309 | end:\r |
310 | return d;\r |
311 | }\r |
312 | \r |
cc68a136 |
313 | \r |
fa1e5e29 |
314 | static void OtherWrite8End(u32 a, u32 d, int realsize)\r |
cc68a136 |
315 | {\r |
cb4a513a |
316 | if ((a&0xffffc0)==0xa12000) { m68k_reg_write8(a, d); return; }\r |
cc68a136 |
317 | \r |
fa1e5e29 |
318 | dprintf("m68k FIXME: strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
319 | }\r |
320 | \r |
cc68a136 |
321 | \r |
fa1e5e29 |
322 | #undef _ASM_MEMORY_C\r |
323 | #include "../MemoryCmn.c"\r |
324 | \r |
cc68a136 |
325 | \r |
326 | // -----------------------------------------------------------------\r |
327 | // Read Rom and read Ram\r |
328 | \r |
329 | u8 PicoReadM68k8(u32 a)\r |
330 | {\r |
331 | u32 d=0;\r |
332 | \r |
333 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
334 | \r |
335 | a&=0xffffff;\r |
336 | \r |
337 | if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios\r |
338 | \r |
339 | // prg RAM\r |
340 | if ((a&0xfe0000)==0x020000) {\r |
672ad671 |
341 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
342 | d = *(prg_bank+((a^1)&0x1ffff));\r |
343 | goto end;\r |
344 | }\r |
345 | \r |
b837b69b |
346 | #if 0\r |
347 | if (a == 0x200000 && SekPc == 0xff0b66 && Pico.m.frame_count > 1000)\r |
348 | {\r |
349 | int i;\r |
350 | FILE *ff;\r |
351 | unsigned short *ram = (unsigned short *) Pico.ram;\r |
352 | // unswap and dump RAM\r |
353 | for (i = 0; i < 0x10000/2; i++)\r |
354 | ram[i] = (ram[i]>>8) | (ram[i]<<8);\r |
355 | ff = fopen("ram.bin", "wb");\r |
356 | fwrite(ram, 1, 0x10000, ff);\r |
357 | fclose(ff);\r |
358 | exit(0);\r |
359 | }\r |
360 | #endif\r |
361 | \r |
d0d47c5b |
362 | // word RAM\r |
363 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
364 | wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
365 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
366 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
367 | if (a >= 0x220000)\r |
368 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
369 | else a &= 0x1ffff;\r |
370 | d = Pico_mcd->word_ram1M[bank][a^1];\r |
d0d47c5b |
371 | } else {\r |
372 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
373 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
374 | }\r |
913ef4b7 |
375 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
376 | goto end;\r |
377 | }\r |
378 | \r |
cc68a136 |
379 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
380 | \r |
c459aefd |
381 | if ((a&0xffffc0)==0xa12000)\r |
382 | rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
383 | \r |
cc68a136 |
384 | d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r |
385 | \r |
c459aefd |
386 | if ((a&0xffffc0)==0xa12000)\r |
387 | rdprintf("ret = %02x", (u8)d);\r |
672ad671 |
388 | \r |
cc68a136 |
389 | end:\r |
390 | \r |
391 | #ifdef __debug_io\r |
392 | dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
393 | #endif\r |
394 | return (u8)d;\r |
395 | }\r |
396 | \r |
ab0607f7 |
397 | \r |
cc68a136 |
398 | u16 PicoReadM68k16(u32 a)\r |
399 | {\r |
400 | u16 d=0;\r |
401 | \r |
402 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
403 | \r |
404 | a&=0xfffffe;\r |
405 | \r |
406 | if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios\r |
407 | \r |
408 | // prg RAM\r |
409 | if ((a&0xfe0000)==0x020000) {\r |
672ad671 |
410 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
411 | d = *(u16 *)(prg_bank+(a&0x1fffe));\r |
412 | goto end;\r |
413 | }\r |
414 | \r |
d0d47c5b |
415 | // word RAM\r |
416 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
417 | wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
418 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
419 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
420 | if (a >= 0x220000)\r |
421 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
422 | else a &= 0x1fffe;\r |
423 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
0a051f55 |
424 | //d = 0xaaaa;\r |
d0d47c5b |
425 | } else {\r |
426 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
427 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
428 | }\r |
913ef4b7 |
429 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
430 | goto end;\r |
431 | }\r |
432 | \r |
c459aefd |
433 | if ((a&0xffffc0)==0xa12000)\r |
434 | rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
435 | \r |
cc68a136 |
436 | d = (u16)OtherRead16(a, 16);\r |
437 | \r |
c459aefd |
438 | if ((a&0xffffc0)==0xa12000)\r |
439 | rdprintf("ret = %04x", d);\r |
672ad671 |
440 | \r |
cc68a136 |
441 | end:\r |
442 | \r |
443 | #ifdef __debug_io\r |
444 | dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
445 | #endif\r |
446 | return d;\r |
447 | }\r |
448 | \r |
ab0607f7 |
449 | \r |
cc68a136 |
450 | u32 PicoReadM68k32(u32 a)\r |
451 | {\r |
452 | u32 d=0;\r |
453 | \r |
454 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
455 | \r |
456 | a&=0xfffffe;\r |
457 | \r |
458 | if (a < 0x20000) { u16 *pm=(u16 *)(Pico_mcd->bios+a); d = (pm[0]<<16)|pm[1]; goto end; } // bios\r |
459 | \r |
460 | // prg RAM\r |
461 | if ((a&0xfe0000)==0x020000) {\r |
672ad671 |
462 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
463 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
464 | d = (pm[0]<<16)|pm[1];\r |
465 | goto end;\r |
466 | }\r |
467 | \r |
d0d47c5b |
468 | // word RAM\r |
469 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
470 | wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
471 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
472 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
473 | if (a >= 0x220000) { // cell arranged\r |
474 | u32 a1, a2;\r |
475 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
476 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
477 | else a2 = a1 + 2;\r |
478 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16;\r |
479 | d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2);\r |
bf098bc5 |
480 | } else {\r |
fa1e5e29 |
481 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
bf098bc5 |
482 | }\r |
d0d47c5b |
483 | } else {\r |
484 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
485 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
486 | }\r |
913ef4b7 |
487 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
488 | goto end;\r |
489 | }\r |
490 | \r |
c459aefd |
491 | if ((a&0xffffc0)==0xa12000)\r |
492 | rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
493 | \r |
cc68a136 |
494 | d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
495 | \r |
c459aefd |
496 | if ((a&0xffffc0)==0xa12000)\r |
497 | rdprintf("ret = %08x", d);\r |
672ad671 |
498 | \r |
cc68a136 |
499 | end:\r |
500 | #ifdef __debug_io\r |
501 | dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
502 | #endif\r |
503 | return d;\r |
504 | }\r |
505 | \r |
ab0607f7 |
506 | \r |
cc68a136 |
507 | // -----------------------------------------------------------------\r |
508 | // Write Ram\r |
509 | \r |
510 | void PicoWriteM68k8(u32 a,u8 d)\r |
511 | {\r |
512 | #ifdef __debug_io\r |
513 | dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
514 | #endif\r |
515 | //if ((a&0xe0ffff)==0xe0a9ba+0x69c)\r |
516 | // dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
517 | \r |
518 | \r |
ab0607f7 |
519 | if ((a&0xe00000)==0xe00000) { // Ram\r |
520 | *(u8 *)(Pico.ram+((a^1)&0xffff)) = d;\r |
521 | return;\r |
522 | }\r |
cc68a136 |
523 | \r |
524 | a&=0xffffff;\r |
525 | \r |
526 | // prg RAM\r |
527 | if ((a&0xfe0000)==0x020000) {\r |
672ad671 |
528 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
bf098bc5 |
529 | *(u8 *)(prg_bank+((a^1)&0x1ffff))=d;\r |
cc68a136 |
530 | return;\r |
531 | }\r |
532 | \r |
d0d47c5b |
533 | // word RAM\r |
534 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
535 | wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc);\r |
d0d47c5b |
536 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
537 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
538 | if (a >= 0x220000)\r |
539 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
540 | else a &= 0x1ffff;\r |
541 | *(u8 *)(Pico_mcd->word_ram1M[bank]+(a^1))=d;\r |
d0d47c5b |
542 | } else {\r |
543 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
544 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
545 | }\r |
546 | return;\r |
547 | }\r |
548 | \r |
c459aefd |
549 | if ((a&0xffffc0)==0xa12000)\r |
550 | rdprintf("m68k_regs w8: [%02x] %02x @%06x", a&0x3f, d, SekPc);\r |
672ad671 |
551 | \r |
cc68a136 |
552 | OtherWrite8(a,d,8);\r |
553 | }\r |
554 | \r |
ab0607f7 |
555 | \r |
cc68a136 |
556 | void PicoWriteM68k16(u32 a,u16 d)\r |
557 | {\r |
558 | #ifdef __debug_io\r |
559 | dprintf("w16: %06x, %04x", a&0xffffff, d);\r |
560 | #endif\r |
cc68a136 |
561 | // dprintf("w16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
562 | \r |
ab0607f7 |
563 | if ((a&0xe00000)==0xe00000) { // Ram\r |
564 | *(u16 *)(Pico.ram+(a&0xfffe))=d;\r |
565 | return;\r |
566 | }\r |
cc68a136 |
567 | \r |
568 | a&=0xfffffe;\r |
569 | \r |
570 | // prg RAM\r |
571 | if ((a&0xfe0000)==0x020000) {\r |
672ad671 |
572 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
573 | *(u16 *)(prg_bank+(a&0x1fffe))=d;\r |
574 | return;\r |
575 | }\r |
576 | \r |
d0d47c5b |
577 | // word RAM\r |
578 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
579 | wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc);\r |
d0d47c5b |
580 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
581 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
582 | if (a >= 0x220000)\r |
583 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
584 | else a &= 0x1fffe;\r |
585 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a)=d;\r |
d0d47c5b |
586 | } else {\r |
587 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
588 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
589 | }\r |
590 | return;\r |
591 | }\r |
592 | \r |
c459aefd |
593 | if ((a&0xffffc0)==0xa12000)\r |
594 | rdprintf("m68k_regs w16: [%02x] %04x @%06x", a&0x3f, d, SekPc);\r |
cc68a136 |
595 | \r |
596 | OtherWrite16(a,d);\r |
597 | }\r |
598 | \r |
ab0607f7 |
599 | \r |
cc68a136 |
600 | void PicoWriteM68k32(u32 a,u32 d)\r |
601 | {\r |
602 | #ifdef __debug_io\r |
603 | dprintf("w32: %06x, %08x", a&0xffffff, d);\r |
604 | #endif\r |
605 | \r |
606 | if ((a&0xe00000)==0xe00000)\r |
607 | {\r |
608 | // Ram:\r |
609 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
610 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
611 | return;\r |
612 | }\r |
613 | \r |
614 | a&=0xfffffe;\r |
615 | \r |
616 | // prg RAM\r |
617 | if ((a&0xfe0000)==0x020000) {\r |
672ad671 |
618 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
619 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
620 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
621 | return;\r |
622 | }\r |
623 | \r |
672ad671 |
624 | // word RAM\r |
d0d47c5b |
625 | if ((a&0xfc0000)==0x200000) {\r |
626 | if (d != 0) // don't log clears\r |
913ef4b7 |
627 | wrdprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc);\r |
d0d47c5b |
628 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
629 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
630 | if (a >= 0x220000) { // cell arranged\r |
631 | u32 a1, a2;\r |
632 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
633 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
634 | else a2 = a1 + 2;\r |
635 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16;\r |
636 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d;\r |
bf098bc5 |
637 | } else {\r |
fa1e5e29 |
638 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
639 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
bf098bc5 |
640 | }\r |
d0d47c5b |
641 | } else {\r |
642 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
643 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
644 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
645 | }\r |
672ad671 |
646 | return;\r |
d0d47c5b |
647 | }\r |
672ad671 |
648 | \r |
c459aefd |
649 | if ((a&0xffffc0)==0xa12000)\r |
650 | rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);\r |
cc68a136 |
651 | \r |
652 | OtherWrite16(a, (u16)(d>>16));\r |
653 | OtherWrite16(a+2,(u16)d);\r |
654 | }\r |
655 | \r |
656 | \r |
657 | // -----------------------------------------------------------------\r |
658 | \r |
659 | \r |
660 | u8 PicoReadS68k8(u32 a)\r |
661 | {\r |
662 | u32 d=0;\r |
663 | \r |
664 | a&=0xffffff;\r |
665 | \r |
666 | // prg RAM\r |
667 | if (a < 0x80000) {\r |
668 | d = *(Pico_mcd->prg_ram+(a^1));\r |
669 | goto end;\r |
670 | }\r |
671 | \r |
672 | // regs\r |
673 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
674 | a &= 0x1ff;\r |
675 | rdprintf("s68k_regs r8: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
676 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
677 | d = gfx_cd_read(a&~1);\r |
678 | else d = s68k_reg_read16(a&~1);\r |
679 | if ((a&1)==0) d>>=8;\r |
c459aefd |
680 | rdprintf("ret = %02x", (u8)d);\r |
cc68a136 |
681 | goto end;\r |
682 | }\r |
683 | \r |
d0d47c5b |
684 | // word RAM (2M area)\r |
685 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
fa1e5e29 |
686 | // test: batman returns\r |
913ef4b7 |
687 | wrdprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
688 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
689 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
690 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
691 | if (a&1) d &= 0x0f;\r |
692 | else d >>= 4;\r |
693 | dprintf("FIXME: decode");\r |
d0d47c5b |
694 | } else {\r |
695 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
696 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
697 | }\r |
913ef4b7 |
698 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
699 | goto end;\r |
700 | }\r |
701 | \r |
702 | // word RAM (1M area)\r |
68cba51e |
703 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
704 | int bank;\r |
913ef4b7 |
705 | wrdprintf("s68k_wram1M r8: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
706 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
707 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
708 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
709 | d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff];\r |
913ef4b7 |
710 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
711 | goto end;\r |
712 | }\r |
713 | \r |
4f265db7 |
714 | // PCM\r |
715 | if ((a&0xff8000)==0xff0000) {\r |
1cd356a3 |
716 | dprintf("s68k_pcm r8: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
717 | a &= 0x7fff;\r |
718 | if (a >= 0x2000)\r |
719 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
720 | else if (a >= 0x20) {\r |
721 | a &= 0x1e;\r |
722 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
723 | if (a & 2) d >>= 8;\r |
724 | }\r |
725 | dprintf("ret = %02x", (u8)d);\r |
726 | goto end;\r |
727 | }\r |
728 | \r |
ab0607f7 |
729 | // bram\r |
730 | if ((a&0xff0000)==0xfe0000) {\r |
731 | d = Pico_mcd->bram[(a>>1)&0x1fff];\r |
732 | goto end;\r |
733 | }\r |
734 | \r |
cc68a136 |
735 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
736 | \r |
737 | end:\r |
738 | \r |
739 | #ifdef __debug_io2\r |
740 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
741 | #endif\r |
742 | return (u8)d;\r |
743 | }\r |
744 | \r |
ab0607f7 |
745 | \r |
cc68a136 |
746 | u16 PicoReadS68k16(u32 a)\r |
747 | {\r |
4f265db7 |
748 | u32 d=0;\r |
cc68a136 |
749 | \r |
750 | a&=0xfffffe;\r |
751 | \r |
752 | // prg RAM\r |
753 | if (a < 0x80000) {\r |
754 | d = *(u16 *)(Pico_mcd->prg_ram+a);\r |
755 | goto end;\r |
756 | }\r |
757 | \r |
758 | // regs\r |
759 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
760 | a &= 0x1fe;\r |
761 | rdprintf("s68k_regs r16: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
762 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
763 | d = gfx_cd_read(a);\r |
764 | else d = s68k_reg_read16(a);\r |
c459aefd |
765 | rdprintf("ret = %04x", d);\r |
cc68a136 |
766 | goto end;\r |
767 | }\r |
768 | \r |
d0d47c5b |
769 | // word RAM (2M area)\r |
770 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
771 | wrdprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
772 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
773 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
774 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
775 | d |= d << 4; d &= ~0xf0;\r |
776 | dprintf("FIXME: decode");\r |
d0d47c5b |
777 | } else {\r |
778 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
779 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
780 | }\r |
913ef4b7 |
781 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
782 | goto end;\r |
783 | }\r |
784 | \r |
785 | // word RAM (1M area)\r |
68cba51e |
786 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
787 | int bank;\r |
913ef4b7 |
788 | wrdprintf("s68k_wram1M r16: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
789 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
790 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
791 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
792 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
913ef4b7 |
793 | wrdprintf("ret = %04x", d);\r |
ab0607f7 |
794 | goto end;\r |
795 | }\r |
796 | \r |
797 | // bram\r |
798 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
799 | dprintf("s68k_bram r16: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
800 | a = (a>>1)&0x1fff;\r |
4f265db7 |
801 | d = Pico_mcd->bram[a++]; // Gens does little endian here, and so do we..\r |
ab0607f7 |
802 | d|= Pico_mcd->bram[a++] << 8;\r |
803 | dprintf("ret = %04x", d);\r |
d0d47c5b |
804 | goto end;\r |
805 | }\r |
806 | \r |
4f265db7 |
807 | // PCM\r |
808 | if ((a&0xff8000)==0xff0000) {\r |
1cd356a3 |
809 | dprintf("s68k_pcm r16: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
810 | a &= 0x7fff;\r |
811 | if (a >= 0x2000)\r |
812 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
813 | else if (a >= 0x20) {\r |
814 | a &= 0x1e;\r |
815 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
816 | if (a & 2) d >>= 8;\r |
817 | }\r |
818 | dprintf("ret = %04x", d);\r |
819 | goto end;\r |
820 | }\r |
821 | \r |
cc68a136 |
822 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
823 | \r |
824 | end:\r |
825 | \r |
826 | #ifdef __debug_io2\r |
827 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
828 | #endif\r |
829 | return d;\r |
830 | }\r |
831 | \r |
ab0607f7 |
832 | \r |
cc68a136 |
833 | u32 PicoReadS68k32(u32 a)\r |
834 | {\r |
835 | u32 d=0;\r |
836 | \r |
837 | a&=0xfffffe;\r |
838 | \r |
839 | // prg RAM\r |
840 | if (a < 0x80000) {\r |
841 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
842 | d = (pm[0]<<16)|pm[1];\r |
843 | goto end;\r |
844 | }\r |
845 | \r |
846 | // regs\r |
847 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
848 | a &= 0x1fe;\r |
849 | rdprintf("s68k_regs r32: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
850 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
851 | d = (gfx_cd_read(a)<<16)|gfx_cd_read(a+2);\r |
852 | else d = (s68k_reg_read16(a)<<16)|s68k_reg_read16(a+2);\r |
c459aefd |
853 | rdprintf("ret = %08x", d);\r |
cc68a136 |
854 | goto end;\r |
855 | }\r |
856 | \r |
d0d47c5b |
857 | // word RAM (2M area)\r |
858 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
859 | wrdprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
860 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
861 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
862 | a >>= 1;\r |
863 | d = Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] << 16;\r |
864 | d |= Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff];\r |
865 | d |= d << 4; d &= 0x0f0f0f0f;\r |
866 | dprintf("FIXME: decode");\r |
d0d47c5b |
867 | } else {\r |
868 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
869 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
870 | }\r |
913ef4b7 |
871 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
872 | goto end;\r |
873 | }\r |
874 | \r |
875 | // word RAM (1M area)\r |
68cba51e |
876 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
877 | int bank;\r |
913ef4b7 |
878 | wrdprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
879 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
880 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
881 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
882 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
913ef4b7 |
883 | wrdprintf("ret = %08x", d);\r |
ab0607f7 |
884 | goto end;\r |
885 | }\r |
886 | \r |
4f265db7 |
887 | // PCM\r |
888 | if ((a&0xff8000)==0xff0000) {\r |
1cd356a3 |
889 | dprintf("s68k_pcm r32: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
890 | a &= 0x7fff;\r |
891 | if (a >= 0x2000) {\r |
892 | a >>= 1;\r |
893 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] << 16;\r |
894 | d |= Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff];\r |
895 | } else if (a >= 0x20) {\r |
896 | a &= 0x1e;\r |
897 | if (a & 2) {\r |
898 | a >>= 2;\r |
899 | d = (Pico_mcd->pcm.ch[a].addr >> (PCM_STEP_SHIFT-8)) & 0xff0000;\r |
900 | d |= (Pico_mcd->pcm.ch[(a+1)&7].addr >> PCM_STEP_SHIFT) & 0xff;\r |
901 | } else {\r |
902 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
903 | d = ((d<<16)&0xff0000) | ((d>>8)&0xff); // PCM chip is LE\r |
904 | }\r |
905 | }\r |
906 | dprintf("ret = %08x", d);\r |
907 | goto end;\r |
908 | }\r |
909 | \r |
ab0607f7 |
910 | // bram\r |
911 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
912 | dprintf("s68k_bram r32: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
913 | a = (a>>1)&0x1fff;\r |
914 | d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion..\r |
915 | d|= Pico_mcd->bram[a++] << 24;\r |
916 | d|= Pico_mcd->bram[a++];\r |
917 | d|= Pico_mcd->bram[a++] << 8;\r |
918 | dprintf("ret = %08x", d);\r |
d0d47c5b |
919 | goto end;\r |
920 | }\r |
921 | \r |
cc68a136 |
922 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
923 | \r |
924 | end:\r |
925 | \r |
926 | #ifdef __debug_io2\r |
927 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
928 | #endif\r |
929 | return d;\r |
930 | }\r |
931 | \r |
ab0607f7 |
932 | \r |
0a051f55 |
933 | /* check: jaguar xj 220 (draws entire world using decode) */\r |
934 | static void decode_write8(u32 a, u8 d, int r3)\r |
935 | {\r |
936 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
937 | u8 oldmask = (a&1) ? 0xf0 : 0x0f;\r |
938 | \r |
939 | //if ((a & 0x3ffff) < 0x28000) return;\r |
940 | //return;\r |
941 | \r |
942 | r3 &= 0x18;\r |
943 | d &= 0x0f;\r |
944 | if (!(a&1)) d <<= 4;\r |
945 | \r |
946 | //dprintf("FIXME: decode, r3 = %02x", r3);\r |
947 | \r |
948 | if (r3 == 8) {\r |
949 | if ((!(*pd & (~oldmask))) && d) goto do_it;\r |
950 | } else if (r3 > 8) {\r |
951 | if (d) goto do_it;\r |
952 | } else {\r |
953 | goto do_it;\r |
954 | }\r |
955 | \r |
956 | return;\r |
957 | do_it:\r |
958 | *pd = d | (*pd & oldmask);\r |
959 | }\r |
960 | \r |
961 | \r |
962 | static void decode_write16(u32 a, u16 d, int r3)\r |
963 | {\r |
964 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
965 | \r |
966 | //if ((a & 0x3ffff) < 0x28000) return;\r |
967 | \r |
968 | r3 &= 0x18;\r |
969 | d &= 0x0f0f;\r |
970 | d |= d >> 4;\r |
971 | \r |
972 | if (r3 == 8) {\r |
973 | u8 dold = *pd;\r |
974 | if (!(dold & 0xf0)) dold |= d & 0xf0;\r |
975 | if (!(dold & 0x0f)) dold |= d & 0x0f;\r |
976 | *pd = dold;\r |
977 | } else if (r3 > 8) {\r |
978 | u8 dold = *pd;\r |
979 | if (!(d & 0xf0)) d |= dold & 0xf0;\r |
980 | if (!(d & 0x0f)) d |= dold & 0x0f;\r |
981 | *pd = d;\r |
982 | } else {\r |
983 | *pd = d;\r |
984 | }\r |
985 | \r |
986 | //dprintf("FIXME: decode");\r |
987 | }\r |
988 | \r |
989 | \r |
cc68a136 |
990 | // -----------------------------------------------------------------\r |
991 | \r |
992 | void PicoWriteS68k8(u32 a,u8 d)\r |
993 | {\r |
994 | #ifdef __debug_io2\r |
995 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
996 | #endif\r |
997 | \r |
998 | a&=0xffffff;\r |
999 | \r |
1000 | // prg RAM\r |
1001 | if (a < 0x80000) {\r |
1002 | u8 *pm=(u8 *)(Pico_mcd->prg_ram+(a^1));\r |
1003 | *pm=d;\r |
1004 | return;\r |
1005 | }\r |
1006 | \r |
1007 | // regs\r |
1008 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1009 | a &= 0x1ff;\r |
1010 | rdprintf("s68k_regs w8: [%02x] %02x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1011 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
1012 | gfx_cd_write(a&~1, (d<<8)|d);\r |
1013 | else s68k_reg_write8(a,d);\r |
cc68a136 |
1014 | return;\r |
1015 | }\r |
1016 | \r |
d0d47c5b |
1017 | // word RAM (2M area)\r |
1018 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1019 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1020 | wrdprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1021 | if (r3 & 4) { // 1M decode mode?\r |
1022 | decode_write8(a, d, r3);\r |
d0d47c5b |
1023 | } else {\r |
1024 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1025 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
1026 | }\r |
1027 | return;\r |
1028 | }\r |
1029 | \r |
1030 | // word RAM (1M area)\r |
68cba51e |
1031 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
1032 | // Wing Commander tries to write here in wrong mode\r |
fa1e5e29 |
1033 | int bank;\r |
d0d47c5b |
1034 | if (d)\r |
913ef4b7 |
1035 | wrdprintf("s68k_wram1M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1036 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1037 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1038 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1039 | *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d;\r |
d0d47c5b |
1040 | return;\r |
1041 | }\r |
1042 | \r |
4f265db7 |
1043 | // PCM\r |
1044 | if ((a&0xff8000)==0xff0000) {\r |
1045 | a &= 0x7fff;\r |
1046 | if (a >= 0x2000)\r |
1047 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1048 | else if (a < 0x12)\r |
1049 | pcm_write(a>>1, d);\r |
1050 | return;\r |
1051 | }\r |
1052 | \r |
ab0607f7 |
1053 | // bram\r |
1054 | if ((a&0xff0000)==0xfe0000) {\r |
1055 | Pico_mcd->bram[(a>>1)&0x1fff] = d;\r |
1056 | SRam.changed = 1;\r |
1057 | return;\r |
1058 | }\r |
1059 | \r |
cc68a136 |
1060 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1061 | }\r |
1062 | \r |
ab0607f7 |
1063 | \r |
cc68a136 |
1064 | void PicoWriteS68k16(u32 a,u16 d)\r |
1065 | {\r |
1066 | #ifdef __debug_io2\r |
1067 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1068 | #endif\r |
1069 | \r |
1070 | a&=0xfffffe;\r |
1071 | \r |
1072 | // prg RAM\r |
1073 | if (a < 0x80000) {\r |
1074 | *(u16 *)(Pico_mcd->prg_ram+a)=d;\r |
1075 | return;\r |
1076 | }\r |
1077 | \r |
1078 | // regs\r |
1079 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1080 | a &= 0x1fe;\r |
1081 | rdprintf("s68k_regs w16: [%02x] %04x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1082 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
1083 | gfx_cd_write(a, d);\r |
1084 | else {\r |
1cd356a3 |
1085 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
1086 | Pico_mcd->s68k_regs[0xf] = d;\r |
1087 | return;\r |
1088 | }\r |
cb4a513a |
1089 | s68k_reg_write8(a, d>>8);\r |
1090 | s68k_reg_write8(a+1,d&0xff);\r |
1091 | }\r |
cc68a136 |
1092 | return;\r |
1093 | }\r |
1094 | \r |
d0d47c5b |
1095 | // word RAM (2M area)\r |
1096 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1097 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1098 | wrdprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1099 | if (r3 & 4) { // 1M decode mode?\r |
1100 | decode_write16(a, d, r3);\r |
d0d47c5b |
1101 | } else {\r |
1102 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1103 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
1104 | }\r |
1105 | return;\r |
1106 | }\r |
1107 | \r |
1108 | // word RAM (1M area)\r |
68cba51e |
1109 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1110 | int bank;\r |
d0d47c5b |
1111 | if (d)\r |
913ef4b7 |
1112 | wrdprintf("s68k_wram1M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1113 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1114 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1115 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1116 | *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d;\r |
d0d47c5b |
1117 | return;\r |
1118 | }\r |
1119 | \r |
4f265db7 |
1120 | // PCM\r |
1121 | if ((a&0xff8000)==0xff0000) {\r |
1122 | a &= 0x7fff;\r |
1123 | if (a >= 0x2000)\r |
1124 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1125 | else if (a < 0x12)\r |
1126 | pcm_write(a>>1, d & 0xff);\r |
1127 | return;\r |
1128 | }\r |
1129 | \r |
ab0607f7 |
1130 | // bram\r |
1131 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1132 | dprintf("s68k_bram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1133 | a = (a>>1)&0x1fff;\r |
1134 | Pico_mcd->bram[a++] = d; // Gens does little endian here, an so do we..\r |
1135 | Pico_mcd->bram[a++] = d >> 8;\r |
1136 | SRam.changed = 1;\r |
1137 | return;\r |
1138 | }\r |
1139 | \r |
cc68a136 |
1140 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1141 | }\r |
1142 | \r |
ab0607f7 |
1143 | \r |
cc68a136 |
1144 | void PicoWriteS68k32(u32 a,u32 d)\r |
1145 | {\r |
1146 | #ifdef __debug_io2\r |
1147 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1148 | #endif\r |
1149 | \r |
1150 | a&=0xfffffe;\r |
1151 | \r |
1152 | // prg RAM\r |
1153 | if (a < 0x80000) {\r |
1154 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
1155 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1156 | return;\r |
1157 | }\r |
1158 | \r |
1159 | // regs\r |
1160 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1161 | a &= 0x1fe;\r |
1162 | rdprintf("s68k_regs w32: [%02x] %08x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1163 | if (a >= 0x58 && a < 0x68) {\r |
cb4a513a |
1164 | gfx_cd_write(a, d>>16);\r |
1165 | gfx_cd_write(a+2, d&0xffff);\r |
1166 | } else {\r |
1167 | s68k_reg_write8(a, d>>24);\r |
1168 | s68k_reg_write8(a+1,(d>>16)&0xff);\r |
1169 | s68k_reg_write8(a+2,(d>>8) &0xff);\r |
1170 | s68k_reg_write8(a+3, d &0xff);\r |
1171 | }\r |
cc68a136 |
1172 | return;\r |
1173 | }\r |
1174 | \r |
d0d47c5b |
1175 | // word RAM (2M area)\r |
1176 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1177 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1178 | wrdprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1179 | if (r3 & 4) { // 1M decode mode?\r |
1180 | decode_write16(a , d >> 16, r3);\r |
1181 | decode_write16(a+2, d , r3);\r |
d0d47c5b |
1182 | } else {\r |
1183 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1184 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
1185 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1186 | }\r |
1187 | return;\r |
1188 | }\r |
1189 | \r |
1190 | // word RAM (1M area)\r |
68cba51e |
1191 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1192 | int bank;\r |
1193 | u16 *pm;\r |
d0d47c5b |
1194 | if (d)\r |
913ef4b7 |
1195 | wrdprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1196 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1197 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1198 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1199 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1200 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
d0d47c5b |
1201 | return;\r |
1202 | }\r |
ab0607f7 |
1203 | \r |
4f265db7 |
1204 | // PCM\r |
1205 | if ((a&0xff8000)==0xff0000) {\r |
1206 | a &= 0x7fff;\r |
1207 | if (a >= 0x2000) {\r |
1208 | a >>= 1;\r |
1209 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] = (d >> 16);\r |
1210 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff] = d;\r |
1211 | } else if (a < 0x12) {\r |
1212 | a >>= 1;\r |
1213 | pcm_write(a, (d>>16) & 0xff);\r |
1214 | pcm_write(a+1, d & 0xff);\r |
1215 | }\r |
1216 | return;\r |
1217 | }\r |
1218 | \r |
ab0607f7 |
1219 | // bram\r |
1220 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1221 | dprintf("s68k_bram w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1222 | a = (a>>1)&0x1fff;\r |
1223 | Pico_mcd->bram[a++] = d >> 16; // middle endian? verify?\r |
1224 | Pico_mcd->bram[a++] = d >> 24;\r |
1225 | Pico_mcd->bram[a++] = d;\r |
1226 | Pico_mcd->bram[a++] = d >> 8;\r |
1227 | SRam.changed = 1;\r |
1228 | return;\r |
1229 | }\r |
1230 | \r |
cc68a136 |
1231 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1232 | }\r |
1233 | \r |
1234 | \r |
1235 | \r |
1236 | // -----------------------------------------------------------------\r |
1237 | \r |
b837b69b |
1238 | \r |
1239 | #if defined(EMU_C68K)\r |
1240 | static __inline int PicoMemBaseM68k(u32 pc)\r |
1241 | {\r |
fa1e5e29 |
1242 | if ((pc&0xe00000)==0xe00000)\r |
1243 | return (int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r |
b837b69b |
1244 | \r |
1245 | if (pc < 0x20000)\r |
fa1e5e29 |
1246 | return (int)Pico_mcd->bios; // Program Counter in BIOS\r |
1247 | \r |
1248 | if ((pc&0xfc0000)==0x200000)\r |
b837b69b |
1249 | {\r |
fa1e5e29 |
1250 | if (!(Pico_mcd->s68k_regs[3]&4))\r |
1251 | return (int)Pico_mcd->word_ram2M - 0x200000; // Program Counter in Word Ram\r |
1252 | if (pc < 0x220000) {\r |
1253 | int bank = (Pico_mcd->s68k_regs[3]&1);\r |
1254 | return (int)Pico_mcd->word_ram1M[bank] - 0x200000;\r |
1255 | }\r |
b837b69b |
1256 | }\r |
1257 | \r |
fa1e5e29 |
1258 | // Error - Program Counter is invalid\r |
1259 | dprintf("m68k FIXME: unhandled jump to %06x", pc);\r |
1260 | \r |
1261 | return (int)Pico_mcd->bios;\r |
b837b69b |
1262 | }\r |
1263 | \r |
1264 | \r |
1265 | static u32 PicoCheckPcM68k(u32 pc)\r |
1266 | {\r |
1267 | pc-=PicoCpu.membase; // Get real pc\r |
1268 | pc&=0xfffffe;\r |
1269 | \r |
1270 | PicoCpu.membase=PicoMemBaseM68k(pc);\r |
1271 | \r |
1272 | return PicoCpu.membase+pc;\r |
1273 | }\r |
1274 | \r |
1275 | \r |
1276 | static __inline int PicoMemBaseS68k(u32 pc)\r |
1277 | {\r |
fa1e5e29 |
1278 | if (pc < 0x80000) // PRG RAM\r |
1279 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1280 | \r |
fa1e5e29 |
1281 | if ((pc&0xfc0000)==0x080000) // WORD RAM 2M area (assume we are in the right mode..)\r |
1282 | return (int)Pico_mcd->word_ram2M - 0x080000;\r |
1283 | \r |
1284 | if ((pc&0xfe0000)==0x0c0000) { // word RAM 1M area\r |
1285 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1286 | return (int)Pico_mcd->word_ram1M[bank] - 0x0c0000;\r |
b837b69b |
1287 | }\r |
1288 | \r |
fa1e5e29 |
1289 | // Error - Program Counter is invalid\r |
1290 | dprintf("s68k FIXME: unhandled jump to %06x", pc);\r |
1291 | \r |
1292 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1293 | }\r |
1294 | \r |
1295 | \r |
1296 | static u32 PicoCheckPcS68k(u32 pc)\r |
1297 | {\r |
1298 | pc-=PicoCpuS68k.membase; // Get real pc\r |
1299 | pc&=0xfffffe;\r |
1300 | \r |
1301 | PicoCpuS68k.membase=PicoMemBaseS68k(pc);\r |
1302 | \r |
1303 | return PicoCpuS68k.membase+pc;\r |
1304 | }\r |
1305 | #endif\r |
1306 | \r |
1307 | \r |
1308 | void PicoMemSetupCD()\r |
1309 | {\r |
1310 | dprintf("PicoMemSetupCD()");\r |
1311 | #ifdef EMU_C68K\r |
1312 | // Setup m68k memory callbacks:\r |
1313 | PicoCpu.checkpc=PicoCheckPcM68k;\r |
1314 | PicoCpu.fetch8 =PicoCpu.read8 =PicoReadM68k8;\r |
1315 | PicoCpu.fetch16=PicoCpu.read16=PicoReadM68k16;\r |
1316 | PicoCpu.fetch32=PicoCpu.read32=PicoReadM68k32;\r |
1317 | PicoCpu.write8 =PicoWriteM68k8;\r |
1318 | PicoCpu.write16=PicoWriteM68k16;\r |
1319 | PicoCpu.write32=PicoWriteM68k32;\r |
1320 | // s68k\r |
1321 | PicoCpuS68k.checkpc=PicoCheckPcS68k;\r |
1322 | PicoCpuS68k.fetch8 =PicoCpuS68k.read8 =PicoReadS68k8;\r |
1323 | PicoCpuS68k.fetch16=PicoCpuS68k.read16=PicoReadS68k16;\r |
1324 | PicoCpuS68k.fetch32=PicoCpuS68k.read32=PicoReadS68k32;\r |
1325 | PicoCpuS68k.write8 =PicoWriteS68k8;\r |
1326 | PicoCpuS68k.write16=PicoWriteS68k16;\r |
1327 | PicoCpuS68k.write32=PicoWriteS68k32;\r |
1328 | #endif\r |
1329 | }\r |
1330 | \r |
1331 | \r |
cc68a136 |
1332 | #ifdef EMU_M68K\r |
1333 | unsigned char PicoReadCD8w (unsigned int a) {\r |
1334 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k8(a) : PicoReadM68k8(a);\r |
1335 | }\r |
1336 | unsigned short PicoReadCD16w(unsigned int a) {\r |
1337 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k16(a) : PicoReadM68k16(a);\r |
1338 | }\r |
1339 | unsigned int PicoReadCD32w(unsigned int a) {\r |
1340 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k32(a) : PicoReadM68k32(a);\r |
1341 | }\r |
1342 | void PicoWriteCD8w (unsigned int a, unsigned char d) {\r |
1343 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);\r |
1344 | }\r |
1345 | void PicoWriteCD16w(unsigned int a, unsigned short d) {\r |
1346 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);\r |
1347 | }\r |
1348 | void PicoWriteCD32w(unsigned int a, unsigned int d) {\r |
1349 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);\r |
1350 | }\r |
1351 | \r |
1352 | // these are allowed to access RAM\r |
1353 | unsigned int m68k_read_pcrelative_CD8 (unsigned int a) {\r |
1354 | a&=0xffffff;\r |
1355 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1356 | if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram\r |
fa1e5e29 |
1357 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1358 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1359 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1360 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1361 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1362 | }\r |
1363 | dprintf("s68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1364 | } else {\r |
cc68a136 |
1365 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
fa1e5e29 |
1366 | if(a<0x20000) return *(u8 *)(Pico.rom+(a^1)); // Bios\r |
1367 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1368 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1369 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1370 | else if (a < 0x220000) {\r |
1371 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1372 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1373 | }\r |
1374 | }\r |
1375 | dprintf("m68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1376 | }\r |
1377 | return 0;//(u8) lastread_d;\r |
1378 | }\r |
1379 | unsigned int m68k_read_pcrelative_CD16(unsigned int a) {\r |
1380 | a&=0xffffff;\r |
1381 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1382 | if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram\r |
fa1e5e29 |
1383 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1384 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1385 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1386 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1387 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1388 | }\r |
1389 | dprintf("s68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1390 | } else {\r |
cc68a136 |
1391 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
fa1e5e29 |
1392 | if(a<0x20000) return *(u16 *)(Pico.rom+(a&~1)); // Bios\r |
1393 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1394 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1395 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1396 | else if (a < 0x220000) {\r |
1397 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1398 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1399 | }\r |
1400 | }\r |
1401 | dprintf("m68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1402 | }\r |
b837b69b |
1403 | return 0;\r |
cc68a136 |
1404 | }\r |
1405 | unsigned int m68k_read_pcrelative_CD32(unsigned int a) {\r |
fa1e5e29 |
1406 | u16 *pm;\r |
cc68a136 |
1407 | a&=0xffffff;\r |
1408 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1409 | if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram\r |
fa1e5e29 |
1410 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1411 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1412 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1413 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1414 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1415 | return (pm[0]<<16)|pm[1];\r |
1416 | }\r |
1417 | dprintf("s68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1418 | } else {\r |
cc68a136 |
1419 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
fa1e5e29 |
1420 | if(a<0x20000) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
1421 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1422 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1423 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1424 | else if (a < 0x220000) {\r |
1425 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1426 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1427 | return (pm[0]<<16)|pm[1];\r |
1428 | }\r |
1429 | }\r |
1430 | dprintf("m68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1431 | }\r |
b837b69b |
1432 | return 0;\r |
cc68a136 |
1433 | }\r |
1434 | #endif // EMU_M68K\r |
1435 | \r |