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