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 |
cc68a136 |
22 | typedef unsigned char u8;\r |
23 | typedef unsigned short u16;\r |
24 | typedef unsigned int u32;\r |
25 | \r |
26 | //#define __debug_io\r |
27 | //#define __debug_io2\r |
66fdc0f0 |
28 | \r |
d1df8786 |
29 | //#define rdprintf dprintf\r |
30 | #define rdprintf(...)\r |
68cba51e |
31 | //#define wrdprintf dprintf\r |
913ef4b7 |
32 | #define wrdprintf(...)\r |
cc68a136 |
33 | \r |
34 | // -----------------------------------------------------------------\r |
35 | \r |
cc68a136 |
36 | \r |
4ff2d527 |
37 | #ifndef _ASM_CD_MEMORY_C\r |
38 | void PicoMemResetCD(int r3)\r |
39 | {\r |
40 | }\r |
41 | #endif\r |
42 | \r |
43 | #ifndef _ASM_CD_MEMORY_C\r |
cb4a513a |
44 | static u32 m68k_reg_read16(u32 a)\r |
cc68a136 |
45 | {\r |
46 | u32 d=0;\r |
47 | a &= 0x3e;\r |
672ad671 |
48 | // dprintf("m68k_regs r%2i: [%02x] @%06x", realsize&~1, a+(realsize&1), SekPc);\r |
cc68a136 |
49 | \r |
50 | switch (a) {\r |
672ad671 |
51 | case 0:\r |
c459aefd |
52 | d = ((Pico_mcd->s68k_regs[0x33]<<13)&0x8000) | Pico_mcd->m.busreq; // here IFL2 is always 0, just like in Gens\r |
672ad671 |
53 | goto end;\r |
cc68a136 |
54 | case 2:\r |
672ad671 |
55 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0xc7);\r |
1cd356a3 |
56 | dprintf("m68k_regs r3: %02x @%06x", (u8)d, SekPcS68k);\r |
cc68a136 |
57 | goto end;\r |
c459aefd |
58 | case 4:\r |
59 | d = Pico_mcd->s68k_regs[4]<<8;\r |
60 | goto end;\r |
61 | case 6:\r |
913ef4b7 |
62 | d = *(u16 *)(Pico_mcd->bios + 0x72);\r |
c459aefd |
63 | goto end;\r |
cc68a136 |
64 | case 8:\r |
cc68a136 |
65 | d = Read_CDC_Host(0);\r |
66 | goto end;\r |
c459aefd |
67 | case 0xA:\r |
fa1e5e29 |
68 | dprintf("m68k FIXME: reserved read");\r |
c459aefd |
69 | goto end;\r |
cc68a136 |
70 | case 0xC:\r |
1cd356a3 |
71 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
72 | dprintf("m68k stopwatch timer read (%04x)", d);\r |
1cd356a3 |
73 | goto end;\r |
cc68a136 |
74 | }\r |
75 | \r |
cc68a136 |
76 | if (a < 0x30) {\r |
77 | // comm flag/cmd/status (0xE-0x2F)\r |
78 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
79 | goto end;\r |
80 | }\r |
81 | \r |
fa1e5e29 |
82 | dprintf("m68k_regs FIXME invalid read @ %02x", a);\r |
cc68a136 |
83 | \r |
84 | end:\r |
85 | \r |
672ad671 |
86 | // dprintf("ret = %04x", d);\r |
cc68a136 |
87 | return d;\r |
88 | }\r |
4ff2d527 |
89 | #endif\r |
cc68a136 |
90 | \r |
4ff2d527 |
91 | #ifndef _ASM_CD_MEMORY_C\r |
92 | static\r |
93 | #endif\r |
94 | void m68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
95 | {\r |
96 | a &= 0x3f;\r |
672ad671 |
97 | // dprintf("m68k_regs w%2i: [%02x] %02x @%06x", realsize, a, d, SekPc);\r |
cc68a136 |
98 | \r |
99 | switch (a) {\r |
100 | case 0:\r |
672ad671 |
101 | d &= 1;\r |
cc68a136 |
102 | if ((d&1) && (Pico_mcd->s68k_regs[0x33]&(1<<2))) { dprintf("m68k: s68k irq 2"); SekInterruptS68k(2); }\r |
c459aefd |
103 | return;\r |
cc68a136 |
104 | case 1:\r |
672ad671 |
105 | d &= 3;\r |
51a902ae |
106 | if (!(d&1)) Pico_mcd->m.state_flags |= 1; // reset pending, needed to be sure we fetch the right vectors on reset\r |
c459aefd |
107 | if ( (Pico_mcd->m.busreq&1) != (d&1)) dprintf("m68k: s68k reset %i", !(d&1));\r |
108 | if ( (Pico_mcd->m.busreq&2) != (d&2)) dprintf("m68k: s68k brq %i", (d&2)>>1);\r |
51a902ae |
109 | if ((Pico_mcd->m.state_flags&1) && (d&3)==1) {\r |
cc68a136 |
110 | SekResetS68k(); // S68k comes out of RESET or BRQ state\r |
4ff2d527 |
111 | Pico_mcd->m.state_flags&=~1;\r |
112 | dprintf("m68k: resetting s68k, cycles=%i", SekCyclesLeft);\r |
cc68a136 |
113 | }\r |
c459aefd |
114 | Pico_mcd->m.busreq = d;\r |
115 | return;\r |
672ad671 |
116 | case 2:\r |
117 | Pico_mcd->s68k_regs[2] = d; // really use s68k side register\r |
118 | return;\r |
66fdc0f0 |
119 | case 3: {\r |
120 | u32 dold = Pico_mcd->s68k_regs[3]&0x1f;\r |
bf098bc5 |
121 | dprintf("m68k_regs w3: %02x @%06x", (u8)d, SekPc);\r |
672ad671 |
122 | d &= 0xc2;\r |
66fdc0f0 |
123 | if ((dold>>6) != ((d>>6)&3))\r |
672ad671 |
124 | dprintf("m68k: prg bank: %i -> %i", (Pico_mcd->s68k_regs[a]>>6), ((d>>6)&3));\r |
125 | //if ((Pico_mcd->s68k_regs[3]&4) != (d&4)) dprintf("m68k: ram mode %i mbit", (d&4) ? 1 : 2);\r |
126 | //if ((Pico_mcd->s68k_regs[3]&2) != (d&2)) dprintf("m68k: %s", (d&4) ? ((d&2) ? "word swap req" : "noop?") :\r |
127 | // ((d&2) ? "word ram to s68k" : "word ram to m68k"));\r |
66fdc0f0 |
128 | if (dold & 4) {\r |
129 | d ^= 2; // writing 0 to DMNA actually sets it, 1 does nothing\r |
130 | } else {\r |
131 | //dold &= ~2; // ??\r |
132 | if (d & 2) dold &= ~1; // return word RAM to s68k in 2M mode\r |
133 | }\r |
134 | Pico_mcd->s68k_regs[3] = d | dold; // really use s68k side register\r |
135 | \r |
136 | /*\r |
137 | d |= Pico_mcd->s68k_regs[3]&0x1d;\r |
138 | if (!(d & 4) && (d & 2)) d &= ~1; // return word RAM to s68k in 2M mode\r |
139 | Pico_mcd->s68k_regs[3] = d; // really use s68k side register\r |
140 | */\r |
672ad671 |
141 | return;\r |
66fdc0f0 |
142 | }\r |
c459aefd |
143 | case 6:\r |
d1df8786 |
144 | Pico_mcd->bios[0x72 + 1] = d; // simple hint vector changer\r |
c459aefd |
145 | return;\r |
146 | case 7:\r |
d1df8786 |
147 | Pico_mcd->bios[0x72] = d;\r |
913ef4b7 |
148 | dprintf("hint vector set to %08x", PicoRead32(0x70));\r |
c459aefd |
149 | return;\r |
cc68a136 |
150 | case 0xe:\r |
672ad671 |
151 | //dprintf("m68k: comm flag: %02x", d);\r |
cc68a136 |
152 | Pico_mcd->s68k_regs[0xe] = d;\r |
c459aefd |
153 | return;\r |
672ad671 |
154 | }\r |
155 | \r |
156 | if ((a&0xf0) == 0x10) {\r |
cc68a136 |
157 | Pico_mcd->s68k_regs[a] = d;\r |
672ad671 |
158 | return;\r |
cc68a136 |
159 | }\r |
160 | \r |
fa1e5e29 |
161 | dprintf("m68k FIXME: invalid write? [%02x] %02x", a, d);\r |
cc68a136 |
162 | }\r |
163 | \r |
164 | \r |
913ef4b7 |
165 | #define READ_FONT_DATA(basemask) \\r |
166 | { \\r |
167 | unsigned int fnt = *(unsigned int *)(Pico_mcd->s68k_regs + 0x4c); \\r |
168 | unsigned int col0 = (fnt >> 8) & 0x0f, col1 = (fnt >> 12) & 0x0f; \\r |
169 | if (fnt & (basemask << 0)) d = col1 ; else d = col0; \\r |
170 | if (fnt & (basemask << 1)) d |= col1 << 4; else d |= col0 << 4; \\r |
171 | if (fnt & (basemask << 2)) d |= col1 << 8; else d |= col0 << 8; \\r |
172 | if (fnt & (basemask << 3)) d |= col1 << 12; else d |= col0 << 12; \\r |
173 | }\r |
174 | \r |
cc68a136 |
175 | \r |
4ff2d527 |
176 | #ifndef _ASM_CD_MEMORY_C\r |
177 | static\r |
178 | #endif\r |
179 | u32 s68k_reg_read16(u32 a)\r |
cc68a136 |
180 | {\r |
181 | u32 d=0;\r |
cc68a136 |
182 | \r |
672ad671 |
183 | // dprintf("s68k_regs r%2i: [%02x] @ %06x", realsize&~1, a+(realsize&1), SekPcS68k);\r |
cc68a136 |
184 | \r |
185 | switch (a) {\r |
186 | case 0:\r |
cb4a513a |
187 | d = ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state\r |
c459aefd |
188 | goto end;\r |
672ad671 |
189 | case 2:\r |
190 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0x1f);\r |
4ff2d527 |
191 | dprintf("s68k_regs r3: %02x @%06x", (u8)d, SekPcS68k);\r |
672ad671 |
192 | goto end;\r |
cc68a136 |
193 | case 6:\r |
194 | d = CDC_Read_Reg();\r |
195 | goto end;\r |
196 | case 8:\r |
cb4a513a |
197 | d = Read_CDC_Host(1); // Gens returns 0 here on byte reads\r |
cc68a136 |
198 | goto end;\r |
199 | case 0xC:\r |
4f265db7 |
200 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
201 | dprintf("s68k stopwatch timer read (%04x)", d);\r |
4f265db7 |
202 | goto end;\r |
d1df8786 |
203 | case 0x30:\r |
4ff2d527 |
204 | dprintf("s68k int3 timer read (%02x%02x)", Pico_mcd->s68k_regs[30], Pico_mcd->s68k_regs[31]);\r |
cc68a136 |
205 | break;\r |
206 | case 0x34: // fader\r |
207 | d = 0; // no busy bit\r |
208 | goto end;\r |
913ef4b7 |
209 | case 0x50: // font data (check: Lunar 2, Silpheed)\r |
210 | READ_FONT_DATA(0x00100000);\r |
211 | goto end;\r |
212 | case 0x52:\r |
213 | READ_FONT_DATA(0x00010000);\r |
214 | goto end;\r |
215 | case 0x54:\r |
216 | READ_FONT_DATA(0x10000000);\r |
217 | goto end;\r |
218 | case 0x56:\r |
219 | READ_FONT_DATA(0x01000000);\r |
220 | goto end;\r |
cc68a136 |
221 | }\r |
222 | \r |
223 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
224 | \r |
225 | end:\r |
226 | \r |
672ad671 |
227 | // dprintf("ret = %04x", d);\r |
cc68a136 |
228 | \r |
229 | return d;\r |
230 | }\r |
231 | \r |
4ff2d527 |
232 | #ifndef _ASM_CD_MEMORY_C\r |
233 | static\r |
234 | #endif\r |
235 | void s68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
236 | {\r |
672ad671 |
237 | //dprintf("s68k_regs w%2i: [%02x] %02x @ %06x", realsize, a, d, SekPcS68k);\r |
cc68a136 |
238 | \r |
239 | // TODO: review against Gens\r |
240 | switch (a) {\r |
672ad671 |
241 | case 2:\r |
242 | return; // only m68k can change WP\r |
fa1e5e29 |
243 | case 3: {\r |
244 | int dold = Pico_mcd->s68k_regs[3];\r |
bf098bc5 |
245 | dprintf("s68k_regs w3: %02x @%06x", (u8)d, SekPc);\r |
672ad671 |
246 | d &= 0x1d;\r |
4ff2d527 |
247 | d |= dold&0xc2;\r |
d0d47c5b |
248 | if (d&4) {\r |
4ff2d527 |
249 | if ((d ^ dold) & 5) {\r |
250 | d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit\r |
251 | #ifdef _ASM_CD_MEMORY_C\r |
252 | PicoMemResetCD(d);\r |
253 | #endif\r |
254 | }\r |
fa1e5e29 |
255 | if (!(dold & 4)) {\r |
256 | dprintf("wram mode 2M->1M");\r |
257 | wram_2M_to_1M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
258 | }\r |
d0d47c5b |
259 | } else {\r |
fa1e5e29 |
260 | if (dold & 4) {\r |
261 | dprintf("wram mode 1M->2M");\r |
4ff2d527 |
262 | if (!(d&1)) { // it didn't set the ret bit, which means it doesn't want to give WRAM to m68k\r |
263 | d &= ~3;\r |
264 | d |= (dold&1) ? 2 : 1; // then give it to the one which had bank0 in 1M mode\r |
265 | }\r |
fa1e5e29 |
266 | wram_1M_to_2M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
267 | #ifdef _ASM_CD_MEMORY_C\r |
268 | PicoMemResetCD(d);\r |
269 | #endif\r |
270 | }\r |
271 | else\r |
272 | d |= dold&1;\r |
273 | if (d&1) d &= ~2; // return word RAM to m68k in 2M mode\r |
d0d47c5b |
274 | }\r |
672ad671 |
275 | break;\r |
fa1e5e29 |
276 | }\r |
cc68a136 |
277 | case 4:\r |
278 | dprintf("s68k CDC dest: %x", d&7);\r |
279 | Pico_mcd->s68k_regs[4] = (Pico_mcd->s68k_regs[4]&0xC0) | (d&7); // CDC mode\r |
280 | return;\r |
281 | case 5:\r |
c459aefd |
282 | //dprintf("s68k CDC reg addr: %x", d&0xf);\r |
cc68a136 |
283 | break;\r |
284 | case 7:\r |
285 | CDC_Write_Reg(d);\r |
286 | return;\r |
287 | case 0xa:\r |
288 | dprintf("s68k set CDC dma addr");\r |
289 | break;\r |
d1df8786 |
290 | case 0xc:\r |
4f265db7 |
291 | case 0xd:\r |
d1df8786 |
292 | dprintf("s68k set stopwatch timer");\r |
4f265db7 |
293 | Pico_mcd->m.timer_stopwatch = 0;\r |
294 | return;\r |
1cd356a3 |
295 | case 0xe:\r |
296 | Pico_mcd->s68k_regs[0Xf] = (d>>1) | (d<<7); // ror8, Gens note: Dragons lair\r |
297 | Pico_mcd->m.timer_stopwatch = 0;\r |
298 | return;\r |
d1df8786 |
299 | case 0x31:\r |
4f265db7 |
300 | dprintf("s68k set int3 timer: %02x", d);\r |
301 | Pico_mcd->m.timer_int3 = d << 16;\r |
d1df8786 |
302 | break;\r |
cc68a136 |
303 | case 0x33: // IRQ mask\r |
304 | dprintf("s68k irq mask: %02x", d);\r |
305 | if ((d&(1<<4)) && (Pico_mcd->s68k_regs[0x37]&4) && !(Pico_mcd->s68k_regs[0x33]&(1<<4))) {\r |
306 | CDD_Export_Status();\r |
cc68a136 |
307 | }\r |
308 | break;\r |
309 | case 0x34: // fader\r |
310 | Pico_mcd->s68k_regs[a] = (u8) d & 0x7f;\r |
311 | return;\r |
672ad671 |
312 | case 0x36:\r |
313 | return; // d/m bit is unsetable\r |
314 | case 0x37: {\r |
315 | u32 d_old = Pico_mcd->s68k_regs[0x37];\r |
316 | Pico_mcd->s68k_regs[0x37] = d&7;\r |
317 | if ((d&4) && !(d_old&4)) {\r |
cc68a136 |
318 | CDD_Export_Status();\r |
cc68a136 |
319 | }\r |
672ad671 |
320 | return;\r |
321 | }\r |
cc68a136 |
322 | case 0x4b:\r |
323 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
324 | CDD_Import_Command();\r |
325 | return;\r |
326 | }\r |
327 | \r |
1cd356a3 |
328 | if ((a&0x1f0) == 0x10 || (a >= 0x38 && a < 0x42))\r |
cc68a136 |
329 | {\r |
fa1e5e29 |
330 | dprintf("s68k FIXME: invalid write @ %02x?", a);\r |
cc68a136 |
331 | return;\r |
332 | }\r |
333 | \r |
334 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
335 | }\r |
336 | \r |
337 | \r |
4ff2d527 |
338 | #ifndef _ASM_CD_MEMORY_C\r |
fa1e5e29 |
339 | static u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
340 | {\r |
341 | u32 d=0;\r |
342 | \r |
672ad671 |
343 | if ((a&0xffffc0)==0xa12000) {\r |
cb4a513a |
344 | d=m68k_reg_read16(a);\r |
672ad671 |
345 | goto end;\r |
346 | }\r |
cc68a136 |
347 | \r |
fa1e5e29 |
348 | dprintf("m68k FIXME: unusual r%i: %06x @%06x", realsize&~1, (a&0xfffffe)+(realsize&1), SekPc);\r |
cc68a136 |
349 | \r |
350 | end:\r |
351 | return d;\r |
352 | }\r |
353 | \r |
cc68a136 |
354 | \r |
fa1e5e29 |
355 | static void OtherWrite8End(u32 a, u32 d, int realsize)\r |
cc68a136 |
356 | {\r |
cb4a513a |
357 | if ((a&0xffffc0)==0xa12000) { m68k_reg_write8(a, d); return; }\r |
cc68a136 |
358 | \r |
fa1e5e29 |
359 | dprintf("m68k FIXME: strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
360 | }\r |
361 | \r |
cc68a136 |
362 | \r |
fa1e5e29 |
363 | #undef _ASM_MEMORY_C\r |
364 | #include "../MemoryCmn.c"\r |
4ff2d527 |
365 | #include "cell_map.c"\r |
366 | #endif // !def _ASM_CD_MEMORY_C\r |
cc68a136 |
367 | \r |
368 | // -----------------------------------------------------------------\r |
369 | // Read Rom and read Ram\r |
370 | \r |
4ff2d527 |
371 | //u8 PicoReadM68k8_(u32 a);\r |
372 | #ifdef _ASM_CD_MEMORY_C\r |
373 | u8 PicoReadM68k8(u32 a);\r |
374 | #else\r |
375 | static u8 PicoReadM68k8(u32 a)\r |
cc68a136 |
376 | {\r |
377 | u32 d=0;\r |
378 | \r |
379 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
380 | \r |
381 | a&=0xffffff;\r |
382 | \r |
383 | if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios\r |
384 | \r |
385 | // prg RAM\r |
4ff2d527 |
386 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
387 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
388 | d = *(prg_bank+((a^1)&0x1ffff));\r |
389 | goto end;\r |
390 | }\r |
391 | \r |
d0d47c5b |
392 | // word RAM\r |
393 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
394 | wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
395 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
396 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
397 | if (a >= 0x220000)\r |
398 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
399 | else a &= 0x1ffff;\r |
400 | d = Pico_mcd->word_ram1M[bank][a^1];\r |
d0d47c5b |
401 | } else {\r |
402 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
403 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
404 | }\r |
913ef4b7 |
405 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
406 | goto end;\r |
407 | }\r |
408 | \r |
cc68a136 |
409 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
410 | \r |
c459aefd |
411 | if ((a&0xffffc0)==0xa12000)\r |
412 | rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
413 | \r |
cc68a136 |
414 | d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r |
415 | \r |
c459aefd |
416 | if ((a&0xffffc0)==0xa12000)\r |
417 | rdprintf("ret = %02x", (u8)d);\r |
672ad671 |
418 | \r |
cc68a136 |
419 | end:\r |
420 | \r |
421 | #ifdef __debug_io\r |
422 | dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
423 | #endif\r |
424 | return (u8)d;\r |
425 | }\r |
4ff2d527 |
426 | #endif\r |
cc68a136 |
427 | \r |
ab0607f7 |
428 | \r |
4ff2d527 |
429 | #ifdef _ASM_CD_MEMORY_C\r |
430 | u16 PicoReadM68k16(u32 a);\r |
431 | #else\r |
432 | static u16 PicoReadM68k16(u32 a)\r |
cc68a136 |
433 | {\r |
434 | u16 d=0;\r |
435 | \r |
436 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
437 | \r |
438 | a&=0xfffffe;\r |
439 | \r |
440 | if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios\r |
441 | \r |
442 | // prg RAM\r |
4ff2d527 |
443 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
444 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
445 | d = *(u16 *)(prg_bank+(a&0x1fffe));\r |
446 | goto end;\r |
447 | }\r |
448 | \r |
d0d47c5b |
449 | // word RAM\r |
450 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
451 | wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
452 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
453 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
454 | if (a >= 0x220000)\r |
455 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
456 | else a &= 0x1fffe;\r |
457 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
d0d47c5b |
458 | } else {\r |
459 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
460 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
461 | }\r |
913ef4b7 |
462 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
463 | goto end;\r |
464 | }\r |
465 | \r |
c459aefd |
466 | if ((a&0xffffc0)==0xa12000)\r |
467 | rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
468 | \r |
cc68a136 |
469 | d = (u16)OtherRead16(a, 16);\r |
470 | \r |
c459aefd |
471 | if ((a&0xffffc0)==0xa12000)\r |
472 | rdprintf("ret = %04x", d);\r |
672ad671 |
473 | \r |
cc68a136 |
474 | end:\r |
475 | \r |
476 | #ifdef __debug_io\r |
477 | dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
478 | #endif\r |
479 | return d;\r |
480 | }\r |
4ff2d527 |
481 | #endif\r |
cc68a136 |
482 | \r |
ab0607f7 |
483 | \r |
4ff2d527 |
484 | #ifdef _ASM_CD_MEMORY_C\r |
485 | u32 PicoReadM68k32(u32 a);\r |
486 | #else\r |
487 | static u32 PicoReadM68k32(u32 a)\r |
cc68a136 |
488 | {\r |
489 | u32 d=0;\r |
490 | \r |
491 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
492 | \r |
493 | a&=0xfffffe;\r |
494 | \r |
495 | if (a < 0x20000) { u16 *pm=(u16 *)(Pico_mcd->bios+a); d = (pm[0]<<16)|pm[1]; goto end; } // bios\r |
496 | \r |
497 | // prg RAM\r |
4ff2d527 |
498 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
499 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
500 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
501 | d = (pm[0]<<16)|pm[1];\r |
502 | goto end;\r |
503 | }\r |
504 | \r |
d0d47c5b |
505 | // word RAM\r |
506 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
507 | wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
508 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
509 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
510 | if (a >= 0x220000) { // cell arranged\r |
511 | u32 a1, a2;\r |
512 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
513 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
514 | else a2 = a1 + 2;\r |
515 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16;\r |
516 | d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2);\r |
bf098bc5 |
517 | } else {\r |
fa1e5e29 |
518 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
bf098bc5 |
519 | }\r |
d0d47c5b |
520 | } else {\r |
521 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
522 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
523 | }\r |
913ef4b7 |
524 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
525 | goto end;\r |
526 | }\r |
527 | \r |
c459aefd |
528 | if ((a&0xffffc0)==0xa12000)\r |
529 | rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
530 | \r |
cc68a136 |
531 | d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
532 | \r |
c459aefd |
533 | if ((a&0xffffc0)==0xa12000)\r |
534 | rdprintf("ret = %08x", d);\r |
672ad671 |
535 | \r |
cc68a136 |
536 | end:\r |
537 | #ifdef __debug_io\r |
538 | dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
539 | #endif\r |
540 | return d;\r |
541 | }\r |
4ff2d527 |
542 | #endif\r |
cc68a136 |
543 | \r |
ab0607f7 |
544 | \r |
cc68a136 |
545 | // -----------------------------------------------------------------\r |
546 | // Write Ram\r |
547 | \r |
4ff2d527 |
548 | #ifdef _ASM_CD_MEMORY_C\r |
549 | void PicoWriteM68k8(u32 a,u8 d);\r |
550 | #else\r |
551 | static void PicoWriteM68k8(u32 a,u8 d)\r |
cc68a136 |
552 | {\r |
553 | #ifdef __debug_io\r |
554 | dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
555 | #endif\r |
556 | //if ((a&0xe0ffff)==0xe0a9ba+0x69c)\r |
557 | // dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
558 | \r |
559 | \r |
ab0607f7 |
560 | if ((a&0xe00000)==0xe00000) { // Ram\r |
561 | *(u8 *)(Pico.ram+((a^1)&0xffff)) = d;\r |
562 | return;\r |
563 | }\r |
cc68a136 |
564 | \r |
565 | a&=0xffffff;\r |
566 | \r |
567 | // prg RAM\r |
4ff2d527 |
568 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
569 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
bf098bc5 |
570 | *(u8 *)(prg_bank+((a^1)&0x1ffff))=d;\r |
cc68a136 |
571 | return;\r |
572 | }\r |
573 | \r |
d0d47c5b |
574 | // word RAM\r |
575 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
576 | wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc);\r |
d0d47c5b |
577 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
578 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
579 | if (a >= 0x220000)\r |
580 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
581 | else a &= 0x1ffff;\r |
582 | *(u8 *)(Pico_mcd->word_ram1M[bank]+(a^1))=d;\r |
d0d47c5b |
583 | } else {\r |
584 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
585 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
586 | }\r |
587 | return;\r |
588 | }\r |
589 | \r |
c459aefd |
590 | if ((a&0xffffc0)==0xa12000)\r |
591 | rdprintf("m68k_regs w8: [%02x] %02x @%06x", a&0x3f, d, SekPc);\r |
672ad671 |
592 | \r |
cc68a136 |
593 | OtherWrite8(a,d,8);\r |
594 | }\r |
4ff2d527 |
595 | #endif\r |
cc68a136 |
596 | \r |
ab0607f7 |
597 | \r |
4ff2d527 |
598 | #ifdef _ASM_CD_MEMORY_C\r |
599 | void PicoWriteM68k16(u32 a,u16 d);\r |
600 | #else\r |
601 | static void PicoWriteM68k16(u32 a,u16 d)\r |
cc68a136 |
602 | {\r |
603 | #ifdef __debug_io\r |
604 | dprintf("w16: %06x, %04x", a&0xffffff, d);\r |
605 | #endif\r |
cc68a136 |
606 | // dprintf("w16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
607 | \r |
ab0607f7 |
608 | if ((a&0xe00000)==0xe00000) { // Ram\r |
609 | *(u16 *)(Pico.ram+(a&0xfffe))=d;\r |
610 | return;\r |
611 | }\r |
cc68a136 |
612 | \r |
613 | a&=0xfffffe;\r |
614 | \r |
615 | // prg RAM\r |
4ff2d527 |
616 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
617 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
618 | *(u16 *)(prg_bank+(a&0x1fffe))=d;\r |
619 | return;\r |
620 | }\r |
621 | \r |
d0d47c5b |
622 | // word RAM\r |
623 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
624 | wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc);\r |
d0d47c5b |
625 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
626 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
627 | if (a >= 0x220000)\r |
628 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
629 | else a &= 0x1fffe;\r |
630 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a)=d;\r |
d0d47c5b |
631 | } else {\r |
632 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
633 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
634 | }\r |
635 | return;\r |
636 | }\r |
637 | \r |
c459aefd |
638 | if ((a&0xffffc0)==0xa12000)\r |
639 | rdprintf("m68k_regs w16: [%02x] %04x @%06x", a&0x3f, d, SekPc);\r |
cc68a136 |
640 | \r |
641 | OtherWrite16(a,d);\r |
642 | }\r |
4ff2d527 |
643 | #endif\r |
cc68a136 |
644 | \r |
ab0607f7 |
645 | \r |
4ff2d527 |
646 | #ifdef _ASM_CD_MEMORY_C\r |
647 | void PicoWriteM68k32(u32 a,u32 d);\r |
648 | #else\r |
649 | static void PicoWriteM68k32(u32 a,u32 d)\r |
cc68a136 |
650 | {\r |
651 | #ifdef __debug_io\r |
652 | dprintf("w32: %06x, %08x", a&0xffffff, d);\r |
653 | #endif\r |
654 | \r |
655 | if ((a&0xe00000)==0xe00000)\r |
656 | {\r |
657 | // Ram:\r |
658 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
659 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
660 | return;\r |
661 | }\r |
662 | \r |
663 | a&=0xfffffe;\r |
664 | \r |
665 | // prg RAM\r |
4ff2d527 |
666 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
667 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
668 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
669 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
670 | return;\r |
671 | }\r |
672 | \r |
672ad671 |
673 | // word RAM\r |
d0d47c5b |
674 | if ((a&0xfc0000)==0x200000) {\r |
675 | if (d != 0) // don't log clears\r |
913ef4b7 |
676 | wrdprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc);\r |
d0d47c5b |
677 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
678 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
679 | if (a >= 0x220000) { // cell arranged\r |
680 | u32 a1, a2;\r |
681 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
682 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
683 | else a2 = a1 + 2;\r |
684 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16;\r |
685 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d;\r |
bf098bc5 |
686 | } else {\r |
fa1e5e29 |
687 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
688 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
bf098bc5 |
689 | }\r |
d0d47c5b |
690 | } else {\r |
691 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
692 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
693 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
694 | }\r |
672ad671 |
695 | return;\r |
d0d47c5b |
696 | }\r |
672ad671 |
697 | \r |
c459aefd |
698 | if ((a&0xffffc0)==0xa12000)\r |
699 | rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);\r |
cc68a136 |
700 | \r |
701 | OtherWrite16(a, (u16)(d>>16));\r |
702 | OtherWrite16(a+2,(u16)d);\r |
703 | }\r |
4ff2d527 |
704 | #endif\r |
cc68a136 |
705 | \r |
706 | \r |
707 | // -----------------------------------------------------------------\r |
708 | \r |
4ff2d527 |
709 | #ifdef _ASM_CD_MEMORY_C\r |
710 | u8 PicoReadS68k8(u32 a);\r |
711 | #else\r |
712 | static u8 PicoReadS68k8(u32 a)\r |
cc68a136 |
713 | {\r |
714 | u32 d=0;\r |
715 | \r |
716 | a&=0xffffff;\r |
717 | \r |
718 | // prg RAM\r |
719 | if (a < 0x80000) {\r |
720 | d = *(Pico_mcd->prg_ram+(a^1));\r |
721 | goto end;\r |
722 | }\r |
723 | \r |
724 | // regs\r |
725 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
726 | a &= 0x1ff;\r |
727 | rdprintf("s68k_regs r8: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
728 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
729 | d = gfx_cd_read(a&~1);\r |
730 | else d = s68k_reg_read16(a&~1);\r |
731 | if ((a&1)==0) d>>=8;\r |
c459aefd |
732 | rdprintf("ret = %02x", (u8)d);\r |
cc68a136 |
733 | goto end;\r |
734 | }\r |
735 | \r |
d0d47c5b |
736 | // word RAM (2M area)\r |
737 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
fa1e5e29 |
738 | // test: batman returns\r |
913ef4b7 |
739 | wrdprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
740 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
741 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
742 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
743 | if (a&1) d &= 0x0f;\r |
744 | else d >>= 4;\r |
745 | dprintf("FIXME: decode");\r |
d0d47c5b |
746 | } else {\r |
747 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
748 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
749 | }\r |
913ef4b7 |
750 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
751 | goto end;\r |
752 | }\r |
753 | \r |
754 | // word RAM (1M area)\r |
68cba51e |
755 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
756 | int bank;\r |
913ef4b7 |
757 | wrdprintf("s68k_wram1M r8: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
758 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
759 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
760 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
761 | d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff];\r |
913ef4b7 |
762 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
763 | goto end;\r |
764 | }\r |
765 | \r |
4f265db7 |
766 | // PCM\r |
767 | if ((a&0xff8000)==0xff0000) {\r |
1cd356a3 |
768 | dprintf("s68k_pcm r8: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
769 | a &= 0x7fff;\r |
770 | if (a >= 0x2000)\r |
771 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
772 | else if (a >= 0x20) {\r |
773 | a &= 0x1e;\r |
774 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
775 | if (a & 2) d >>= 8;\r |
776 | }\r |
777 | dprintf("ret = %02x", (u8)d);\r |
778 | goto end;\r |
779 | }\r |
780 | \r |
ab0607f7 |
781 | // bram\r |
782 | if ((a&0xff0000)==0xfe0000) {\r |
783 | d = Pico_mcd->bram[(a>>1)&0x1fff];\r |
784 | goto end;\r |
785 | }\r |
786 | \r |
cc68a136 |
787 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
788 | \r |
789 | end:\r |
790 | \r |
791 | #ifdef __debug_io2\r |
792 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
793 | #endif\r |
794 | return (u8)d;\r |
795 | }\r |
4ff2d527 |
796 | #endif\r |
cc68a136 |
797 | \r |
ab0607f7 |
798 | \r |
4ff2d527 |
799 | //u16 PicoReadS68k16_(u32 a);\r |
800 | #ifdef _ASM_CD_MEMORY_C\r |
801 | u16 PicoReadS68k16(u32 a);\r |
802 | #else\r |
803 | static u16 PicoReadS68k16(u32 a)\r |
cc68a136 |
804 | {\r |
4f265db7 |
805 | u32 d=0;\r |
cc68a136 |
806 | \r |
807 | a&=0xfffffe;\r |
808 | \r |
809 | // prg RAM\r |
810 | if (a < 0x80000) {\r |
811 | d = *(u16 *)(Pico_mcd->prg_ram+a);\r |
812 | goto end;\r |
813 | }\r |
814 | \r |
815 | // regs\r |
816 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
817 | a &= 0x1fe;\r |
818 | rdprintf("s68k_regs r16: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
819 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
820 | d = gfx_cd_read(a);\r |
821 | else d = s68k_reg_read16(a);\r |
c459aefd |
822 | rdprintf("ret = %04x", d);\r |
cc68a136 |
823 | goto end;\r |
824 | }\r |
825 | \r |
d0d47c5b |
826 | // word RAM (2M area)\r |
827 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
828 | wrdprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
829 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
830 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
831 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
832 | d |= d << 4; d &= ~0xf0;\r |
833 | dprintf("FIXME: decode");\r |
d0d47c5b |
834 | } else {\r |
835 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
836 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
837 | }\r |
913ef4b7 |
838 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
839 | goto end;\r |
840 | }\r |
841 | \r |
842 | // word RAM (1M area)\r |
68cba51e |
843 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
844 | int bank;\r |
913ef4b7 |
845 | wrdprintf("s68k_wram1M r16: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
846 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
847 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
848 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
849 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
913ef4b7 |
850 | wrdprintf("ret = %04x", d);\r |
ab0607f7 |
851 | goto end;\r |
852 | }\r |
853 | \r |
854 | // bram\r |
855 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
856 | dprintf("FIXME: s68k_bram r16: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
857 | a = (a>>1)&0x1fff;\r |
4f265db7 |
858 | d = Pico_mcd->bram[a++]; // Gens does little endian here, and so do we..\r |
4ff2d527 |
859 | d|= Pico_mcd->bram[a++] << 8; // This is most likely wrong\r |
ab0607f7 |
860 | dprintf("ret = %04x", d);\r |
d0d47c5b |
861 | goto end;\r |
862 | }\r |
863 | \r |
4f265db7 |
864 | // PCM\r |
865 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
866 | dprintf("FIXME: s68k_pcm r16: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
867 | a &= 0x7fff;\r |
868 | if (a >= 0x2000)\r |
869 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
870 | else if (a >= 0x20) {\r |
871 | a &= 0x1e;\r |
872 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
873 | if (a & 2) d >>= 8;\r |
874 | }\r |
875 | dprintf("ret = %04x", d);\r |
876 | goto end;\r |
877 | }\r |
878 | \r |
cc68a136 |
879 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
880 | \r |
881 | end:\r |
882 | \r |
883 | #ifdef __debug_io2\r |
884 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
885 | #endif\r |
886 | return d;\r |
887 | }\r |
4ff2d527 |
888 | #endif\r |
cc68a136 |
889 | \r |
ab0607f7 |
890 | \r |
4ff2d527 |
891 | #ifdef _ASM_CD_MEMORY_C\r |
892 | u32 PicoReadS68k32(u32 a);\r |
893 | #else\r |
894 | static u32 PicoReadS68k32(u32 a)\r |
cc68a136 |
895 | {\r |
896 | u32 d=0;\r |
897 | \r |
898 | a&=0xfffffe;\r |
899 | \r |
900 | // prg RAM\r |
901 | if (a < 0x80000) {\r |
902 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
903 | d = (pm[0]<<16)|pm[1];\r |
904 | goto end;\r |
905 | }\r |
906 | \r |
907 | // regs\r |
908 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
909 | a &= 0x1fe;\r |
910 | rdprintf("s68k_regs r32: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
911 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
912 | d = (gfx_cd_read(a)<<16)|gfx_cd_read(a+2);\r |
913 | else d = (s68k_reg_read16(a)<<16)|s68k_reg_read16(a+2);\r |
c459aefd |
914 | rdprintf("ret = %08x", d);\r |
cc68a136 |
915 | goto end;\r |
916 | }\r |
917 | \r |
d0d47c5b |
918 | // word RAM (2M area)\r |
919 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
920 | wrdprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
921 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
922 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
923 | a >>= 1;\r |
924 | d = Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] << 16;\r |
925 | d |= Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff];\r |
926 | d |= d << 4; d &= 0x0f0f0f0f;\r |
927 | dprintf("FIXME: decode");\r |
d0d47c5b |
928 | } else {\r |
929 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
930 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
931 | }\r |
913ef4b7 |
932 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
933 | goto end;\r |
934 | }\r |
935 | \r |
936 | // word RAM (1M area)\r |
68cba51e |
937 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
938 | int bank;\r |
913ef4b7 |
939 | wrdprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
940 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
941 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
942 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
943 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
913ef4b7 |
944 | wrdprintf("ret = %08x", d);\r |
ab0607f7 |
945 | goto end;\r |
946 | }\r |
947 | \r |
4f265db7 |
948 | // PCM\r |
949 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
950 | dprintf("FIXME: s68k_pcm r32: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
951 | a &= 0x7fff;\r |
952 | if (a >= 0x2000) {\r |
953 | a >>= 1;\r |
954 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] << 16;\r |
955 | d |= Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff];\r |
956 | } else if (a >= 0x20) {\r |
957 | a &= 0x1e;\r |
958 | if (a & 2) {\r |
959 | a >>= 2;\r |
960 | d = (Pico_mcd->pcm.ch[a].addr >> (PCM_STEP_SHIFT-8)) & 0xff0000;\r |
961 | d |= (Pico_mcd->pcm.ch[(a+1)&7].addr >> PCM_STEP_SHIFT) & 0xff;\r |
962 | } else {\r |
963 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
964 | d = ((d<<16)&0xff0000) | ((d>>8)&0xff); // PCM chip is LE\r |
965 | }\r |
966 | }\r |
967 | dprintf("ret = %08x", d);\r |
968 | goto end;\r |
969 | }\r |
970 | \r |
ab0607f7 |
971 | // bram\r |
972 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
973 | dprintf("FIXME: s68k_bram r32: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
974 | a = (a>>1)&0x1fff;\r |
975 | d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion..\r |
976 | d|= Pico_mcd->bram[a++] << 24;\r |
977 | d|= Pico_mcd->bram[a++];\r |
978 | d|= Pico_mcd->bram[a++] << 8;\r |
979 | dprintf("ret = %08x", d);\r |
d0d47c5b |
980 | goto end;\r |
981 | }\r |
982 | \r |
cc68a136 |
983 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
984 | \r |
985 | end:\r |
986 | \r |
987 | #ifdef __debug_io2\r |
988 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
989 | #endif\r |
990 | return d;\r |
991 | }\r |
4ff2d527 |
992 | #endif\r |
cc68a136 |
993 | \r |
ab0607f7 |
994 | \r |
0a051f55 |
995 | /* check: jaguar xj 220 (draws entire world using decode) */\r |
996 | static void decode_write8(u32 a, u8 d, int r3)\r |
997 | {\r |
998 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
999 | u8 oldmask = (a&1) ? 0xf0 : 0x0f;\r |
1000 | \r |
0a051f55 |
1001 | r3 &= 0x18;\r |
1002 | d &= 0x0f;\r |
1003 | if (!(a&1)) d <<= 4;\r |
1004 | \r |
1005 | //dprintf("FIXME: decode, r3 = %02x", r3);\r |
1006 | \r |
1007 | if (r3 == 8) {\r |
1008 | if ((!(*pd & (~oldmask))) && d) goto do_it;\r |
1009 | } else if (r3 > 8) {\r |
1010 | if (d) goto do_it;\r |
1011 | } else {\r |
1012 | goto do_it;\r |
1013 | }\r |
1014 | \r |
1015 | return;\r |
1016 | do_it:\r |
1017 | *pd = d | (*pd & oldmask);\r |
1018 | }\r |
1019 | \r |
1020 | \r |
1021 | static void decode_write16(u32 a, u16 d, int r3)\r |
1022 | {\r |
1023 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
1024 | \r |
1025 | //if ((a & 0x3ffff) < 0x28000) return;\r |
1026 | \r |
1027 | r3 &= 0x18;\r |
1028 | d &= 0x0f0f;\r |
1029 | d |= d >> 4;\r |
1030 | \r |
1031 | if (r3 == 8) {\r |
1032 | u8 dold = *pd;\r |
1033 | if (!(dold & 0xf0)) dold |= d & 0xf0;\r |
1034 | if (!(dold & 0x0f)) dold |= d & 0x0f;\r |
1035 | *pd = dold;\r |
1036 | } else if (r3 > 8) {\r |
1037 | u8 dold = *pd;\r |
1038 | if (!(d & 0xf0)) d |= dold & 0xf0;\r |
1039 | if (!(d & 0x0f)) d |= dold & 0x0f;\r |
1040 | *pd = d;\r |
1041 | } else {\r |
1042 | *pd = d;\r |
1043 | }\r |
1044 | \r |
1045 | //dprintf("FIXME: decode");\r |
1046 | }\r |
1047 | \r |
1048 | \r |
cc68a136 |
1049 | // -----------------------------------------------------------------\r |
1050 | \r |
4ff2d527 |
1051 | #ifdef _ASM_CD_MEMORY_C\r |
1052 | void PicoWriteS68k8(u32 a,u8 d);\r |
1053 | #else\r |
1054 | static void PicoWriteS68k8(u32 a,u8 d)\r |
cc68a136 |
1055 | {\r |
1056 | #ifdef __debug_io2\r |
1057 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1058 | #endif\r |
1059 | \r |
1060 | a&=0xffffff;\r |
1061 | \r |
1062 | // prg RAM\r |
1063 | if (a < 0x80000) {\r |
1064 | u8 *pm=(u8 *)(Pico_mcd->prg_ram+(a^1));\r |
1065 | *pm=d;\r |
1066 | return;\r |
1067 | }\r |
1068 | \r |
1069 | // regs\r |
1070 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1071 | a &= 0x1ff;\r |
1072 | rdprintf("s68k_regs w8: [%02x] %02x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1073 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
1074 | gfx_cd_write(a&~1, (d<<8)|d);\r |
1075 | else s68k_reg_write8(a,d);\r |
cc68a136 |
1076 | return;\r |
1077 | }\r |
1078 | \r |
d0d47c5b |
1079 | // word RAM (2M area)\r |
1080 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1081 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1082 | wrdprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1083 | if (r3 & 4) { // 1M decode mode?\r |
1084 | decode_write8(a, d, r3);\r |
d0d47c5b |
1085 | } else {\r |
1086 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1087 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
1088 | }\r |
1089 | return;\r |
1090 | }\r |
1091 | \r |
1092 | // word RAM (1M area)\r |
68cba51e |
1093 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
1094 | // Wing Commander tries to write here in wrong mode\r |
fa1e5e29 |
1095 | int bank;\r |
d0d47c5b |
1096 | if (d)\r |
913ef4b7 |
1097 | wrdprintf("s68k_wram1M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1098 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1099 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1100 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1101 | *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d;\r |
d0d47c5b |
1102 | return;\r |
1103 | }\r |
1104 | \r |
4f265db7 |
1105 | // PCM\r |
1106 | if ((a&0xff8000)==0xff0000) {\r |
1107 | a &= 0x7fff;\r |
1108 | if (a >= 0x2000)\r |
1109 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1110 | else if (a < 0x12)\r |
1111 | pcm_write(a>>1, d);\r |
1112 | return;\r |
1113 | }\r |
1114 | \r |
ab0607f7 |
1115 | // bram\r |
1116 | if ((a&0xff0000)==0xfe0000) {\r |
1117 | Pico_mcd->bram[(a>>1)&0x1fff] = d;\r |
1118 | SRam.changed = 1;\r |
1119 | return;\r |
1120 | }\r |
1121 | \r |
cc68a136 |
1122 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1123 | }\r |
4ff2d527 |
1124 | #endif\r |
cc68a136 |
1125 | \r |
ab0607f7 |
1126 | \r |
4ff2d527 |
1127 | #ifdef _ASM_CD_MEMORY_C\r |
1128 | void PicoWriteS68k16(u32 a,u16 d);\r |
1129 | #else\r |
1130 | static void PicoWriteS68k16(u32 a,u16 d)\r |
cc68a136 |
1131 | {\r |
1132 | #ifdef __debug_io2\r |
1133 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1134 | #endif\r |
1135 | \r |
1136 | a&=0xfffffe;\r |
1137 | \r |
1138 | // prg RAM\r |
1139 | if (a < 0x80000) {\r |
1140 | *(u16 *)(Pico_mcd->prg_ram+a)=d;\r |
1141 | return;\r |
1142 | }\r |
1143 | \r |
1144 | // regs\r |
1145 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1146 | a &= 0x1fe;\r |
1147 | rdprintf("s68k_regs w16: [%02x] %04x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1148 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
1149 | gfx_cd_write(a, d);\r |
1150 | else {\r |
1cd356a3 |
1151 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
1152 | Pico_mcd->s68k_regs[0xf] = d;\r |
4ff2d527 |
1153 | return;\r |
1cd356a3 |
1154 | }\r |
cb4a513a |
1155 | s68k_reg_write8(a, d>>8);\r |
1156 | s68k_reg_write8(a+1,d&0xff);\r |
1157 | }\r |
cc68a136 |
1158 | return;\r |
1159 | }\r |
1160 | \r |
d0d47c5b |
1161 | // word RAM (2M area)\r |
1162 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1163 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1164 | wrdprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1165 | if (r3 & 4) { // 1M decode mode?\r |
1166 | decode_write16(a, d, r3);\r |
d0d47c5b |
1167 | } else {\r |
1168 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1169 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
1170 | }\r |
1171 | return;\r |
1172 | }\r |
1173 | \r |
1174 | // word RAM (1M area)\r |
68cba51e |
1175 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1176 | int bank;\r |
d0d47c5b |
1177 | if (d)\r |
913ef4b7 |
1178 | wrdprintf("s68k_wram1M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1179 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1180 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1181 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1182 | *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d;\r |
d0d47c5b |
1183 | return;\r |
1184 | }\r |
1185 | \r |
4f265db7 |
1186 | // PCM\r |
1187 | if ((a&0xff8000)==0xff0000) {\r |
1188 | a &= 0x7fff;\r |
1189 | if (a >= 0x2000)\r |
1190 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1191 | else if (a < 0x12)\r |
1192 | pcm_write(a>>1, d & 0xff);\r |
1193 | return;\r |
1194 | }\r |
1195 | \r |
ab0607f7 |
1196 | // bram\r |
1197 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1198 | dprintf("s68k_bram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1199 | a = (a>>1)&0x1fff;\r |
1200 | Pico_mcd->bram[a++] = d; // Gens does little endian here, an so do we..\r |
1201 | Pico_mcd->bram[a++] = d >> 8;\r |
1202 | SRam.changed = 1;\r |
1203 | return;\r |
1204 | }\r |
1205 | \r |
cc68a136 |
1206 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1207 | }\r |
4ff2d527 |
1208 | #endif\r |
cc68a136 |
1209 | \r |
ab0607f7 |
1210 | \r |
4ff2d527 |
1211 | #ifdef _ASM_CD_MEMORY_C\r |
1212 | void PicoWriteS68k32(u32 a,u32 d);\r |
1213 | #else\r |
1214 | static void PicoWriteS68k32(u32 a,u32 d)\r |
cc68a136 |
1215 | {\r |
1216 | #ifdef __debug_io2\r |
1217 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1218 | #endif\r |
1219 | \r |
1220 | a&=0xfffffe;\r |
1221 | \r |
1222 | // prg RAM\r |
1223 | if (a < 0x80000) {\r |
1224 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
1225 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1226 | return;\r |
1227 | }\r |
1228 | \r |
1229 | // regs\r |
1230 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1231 | a &= 0x1fe;\r |
1232 | rdprintf("s68k_regs w32: [%02x] %08x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1233 | if (a >= 0x58 && a < 0x68) {\r |
cb4a513a |
1234 | gfx_cd_write(a, d>>16);\r |
1235 | gfx_cd_write(a+2, d&0xffff);\r |
1236 | } else {\r |
1237 | s68k_reg_write8(a, d>>24);\r |
1238 | s68k_reg_write8(a+1,(d>>16)&0xff);\r |
1239 | s68k_reg_write8(a+2,(d>>8) &0xff);\r |
1240 | s68k_reg_write8(a+3, d &0xff);\r |
1241 | }\r |
cc68a136 |
1242 | return;\r |
1243 | }\r |
1244 | \r |
d0d47c5b |
1245 | // word RAM (2M area)\r |
1246 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1247 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1248 | wrdprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1249 | if (r3 & 4) { // 1M decode mode?\r |
1250 | decode_write16(a , d >> 16, r3);\r |
1251 | decode_write16(a+2, d , r3);\r |
d0d47c5b |
1252 | } else {\r |
1253 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1254 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
1255 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1256 | }\r |
1257 | return;\r |
1258 | }\r |
1259 | \r |
1260 | // word RAM (1M area)\r |
68cba51e |
1261 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1262 | int bank;\r |
1263 | u16 *pm;\r |
d0d47c5b |
1264 | if (d)\r |
913ef4b7 |
1265 | wrdprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1266 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1267 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1268 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1269 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1270 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
d0d47c5b |
1271 | return;\r |
1272 | }\r |
ab0607f7 |
1273 | \r |
4f265db7 |
1274 | // PCM\r |
1275 | if ((a&0xff8000)==0xff0000) {\r |
1276 | a &= 0x7fff;\r |
1277 | if (a >= 0x2000) {\r |
1278 | a >>= 1;\r |
1279 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] = (d >> 16);\r |
1280 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff] = d;\r |
1281 | } else if (a < 0x12) {\r |
1282 | a >>= 1;\r |
1283 | pcm_write(a, (d>>16) & 0xff);\r |
1284 | pcm_write(a+1, d & 0xff);\r |
1285 | }\r |
1286 | return;\r |
1287 | }\r |
1288 | \r |
ab0607f7 |
1289 | // bram\r |
1290 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1291 | dprintf("s68k_bram w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1292 | a = (a>>1)&0x1fff;\r |
1293 | Pico_mcd->bram[a++] = d >> 16; // middle endian? verify?\r |
1294 | Pico_mcd->bram[a++] = d >> 24;\r |
1295 | Pico_mcd->bram[a++] = d;\r |
1296 | Pico_mcd->bram[a++] = d >> 8;\r |
1297 | SRam.changed = 1;\r |
1298 | return;\r |
1299 | }\r |
1300 | \r |
cc68a136 |
1301 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1302 | }\r |
4ff2d527 |
1303 | #endif\r |
cc68a136 |
1304 | \r |
1305 | \r |
1306 | // -----------------------------------------------------------------\r |
1307 | \r |
b837b69b |
1308 | \r |
1309 | #if defined(EMU_C68K)\r |
1310 | static __inline int PicoMemBaseM68k(u32 pc)\r |
1311 | {\r |
fa1e5e29 |
1312 | if ((pc&0xe00000)==0xe00000)\r |
1313 | return (int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r |
b837b69b |
1314 | \r |
1315 | if (pc < 0x20000)\r |
fa1e5e29 |
1316 | return (int)Pico_mcd->bios; // Program Counter in BIOS\r |
1317 | \r |
1318 | if ((pc&0xfc0000)==0x200000)\r |
b837b69b |
1319 | {\r |
fa1e5e29 |
1320 | if (!(Pico_mcd->s68k_regs[3]&4))\r |
1321 | return (int)Pico_mcd->word_ram2M - 0x200000; // Program Counter in Word Ram\r |
1322 | if (pc < 0x220000) {\r |
1323 | int bank = (Pico_mcd->s68k_regs[3]&1);\r |
1324 | return (int)Pico_mcd->word_ram1M[bank] - 0x200000;\r |
1325 | }\r |
b837b69b |
1326 | }\r |
1327 | \r |
fa1e5e29 |
1328 | // Error - Program Counter is invalid\r |
1329 | dprintf("m68k FIXME: unhandled jump to %06x", pc);\r |
1330 | \r |
1331 | return (int)Pico_mcd->bios;\r |
b837b69b |
1332 | }\r |
1333 | \r |
1334 | \r |
1335 | static u32 PicoCheckPcM68k(u32 pc)\r |
1336 | {\r |
1337 | pc-=PicoCpu.membase; // Get real pc\r |
1338 | pc&=0xfffffe;\r |
1339 | \r |
1340 | PicoCpu.membase=PicoMemBaseM68k(pc);\r |
1341 | \r |
1342 | return PicoCpu.membase+pc;\r |
1343 | }\r |
1344 | \r |
1345 | \r |
1346 | static __inline int PicoMemBaseS68k(u32 pc)\r |
1347 | {\r |
fa1e5e29 |
1348 | if (pc < 0x80000) // PRG RAM\r |
1349 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1350 | \r |
fa1e5e29 |
1351 | if ((pc&0xfc0000)==0x080000) // WORD RAM 2M area (assume we are in the right mode..)\r |
1352 | return (int)Pico_mcd->word_ram2M - 0x080000;\r |
1353 | \r |
1354 | if ((pc&0xfe0000)==0x0c0000) { // word RAM 1M area\r |
1355 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1356 | return (int)Pico_mcd->word_ram1M[bank] - 0x0c0000;\r |
b837b69b |
1357 | }\r |
1358 | \r |
fa1e5e29 |
1359 | // Error - Program Counter is invalid\r |
1360 | dprintf("s68k FIXME: unhandled jump to %06x", pc);\r |
1361 | \r |
1362 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1363 | }\r |
1364 | \r |
1365 | \r |
1366 | static u32 PicoCheckPcS68k(u32 pc)\r |
1367 | {\r |
1368 | pc-=PicoCpuS68k.membase; // Get real pc\r |
1369 | pc&=0xfffffe;\r |
1370 | \r |
1371 | PicoCpuS68k.membase=PicoMemBaseS68k(pc);\r |
1372 | \r |
1373 | return PicoCpuS68k.membase+pc;\r |
1374 | }\r |
1375 | #endif\r |
1376 | \r |
1377 | \r |
1378 | void PicoMemSetupCD()\r |
1379 | {\r |
1380 | dprintf("PicoMemSetupCD()");\r |
1381 | #ifdef EMU_C68K\r |
1382 | // Setup m68k memory callbacks:\r |
1383 | PicoCpu.checkpc=PicoCheckPcM68k;\r |
1384 | PicoCpu.fetch8 =PicoCpu.read8 =PicoReadM68k8;\r |
1385 | PicoCpu.fetch16=PicoCpu.read16=PicoReadM68k16;\r |
1386 | PicoCpu.fetch32=PicoCpu.read32=PicoReadM68k32;\r |
1387 | PicoCpu.write8 =PicoWriteM68k8;\r |
1388 | PicoCpu.write16=PicoWriteM68k16;\r |
1389 | PicoCpu.write32=PicoWriteM68k32;\r |
1390 | // s68k\r |
1391 | PicoCpuS68k.checkpc=PicoCheckPcS68k;\r |
1392 | PicoCpuS68k.fetch8 =PicoCpuS68k.read8 =PicoReadS68k8;\r |
1393 | PicoCpuS68k.fetch16=PicoCpuS68k.read16=PicoReadS68k16;\r |
1394 | PicoCpuS68k.fetch32=PicoCpuS68k.read32=PicoReadS68k32;\r |
1395 | PicoCpuS68k.write8 =PicoWriteS68k8;\r |
1396 | PicoCpuS68k.write16=PicoWriteS68k16;\r |
1397 | PicoCpuS68k.write32=PicoWriteS68k32;\r |
1398 | #endif\r |
1399 | }\r |
1400 | \r |
1401 | \r |
cc68a136 |
1402 | #ifdef EMU_M68K\r |
1403 | unsigned char PicoReadCD8w (unsigned int a) {\r |
1404 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k8(a) : PicoReadM68k8(a);\r |
1405 | }\r |
1406 | unsigned short PicoReadCD16w(unsigned int a) {\r |
1407 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k16(a) : PicoReadM68k16(a);\r |
1408 | }\r |
1409 | unsigned int PicoReadCD32w(unsigned int a) {\r |
1410 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k32(a) : PicoReadM68k32(a);\r |
1411 | }\r |
1412 | void PicoWriteCD8w (unsigned int a, unsigned char d) {\r |
1413 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);\r |
1414 | }\r |
1415 | void PicoWriteCD16w(unsigned int a, unsigned short d) {\r |
1416 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);\r |
1417 | }\r |
1418 | void PicoWriteCD32w(unsigned int a, unsigned int d) {\r |
1419 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);\r |
1420 | }\r |
1421 | \r |
1422 | // these are allowed to access RAM\r |
1423 | unsigned int m68k_read_pcrelative_CD8 (unsigned int a) {\r |
1424 | a&=0xffffff;\r |
1425 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1426 | if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram\r |
fa1e5e29 |
1427 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1428 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1429 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1430 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1431 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1432 | }\r |
1433 | dprintf("s68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1434 | } else {\r |
cc68a136 |
1435 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
fa1e5e29 |
1436 | if(a<0x20000) return *(u8 *)(Pico.rom+(a^1)); // Bios\r |
1437 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1438 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1439 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1440 | else if (a < 0x220000) {\r |
1441 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1442 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1443 | }\r |
1444 | }\r |
1445 | dprintf("m68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1446 | }\r |
1447 | return 0;//(u8) lastread_d;\r |
1448 | }\r |
1449 | unsigned int m68k_read_pcrelative_CD16(unsigned int a) {\r |
1450 | a&=0xffffff;\r |
1451 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1452 | if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram\r |
fa1e5e29 |
1453 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1454 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1455 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1456 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1457 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1458 | }\r |
1459 | dprintf("s68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1460 | } else {\r |
cc68a136 |
1461 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
fa1e5e29 |
1462 | if(a<0x20000) return *(u16 *)(Pico.rom+(a&~1)); // Bios\r |
1463 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1464 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1465 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1466 | else if (a < 0x220000) {\r |
1467 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1468 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1469 | }\r |
1470 | }\r |
1471 | dprintf("m68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1472 | }\r |
b837b69b |
1473 | return 0;\r |
cc68a136 |
1474 | }\r |
1475 | unsigned int m68k_read_pcrelative_CD32(unsigned int a) {\r |
fa1e5e29 |
1476 | u16 *pm;\r |
cc68a136 |
1477 | a&=0xffffff;\r |
1478 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1479 | if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram\r |
fa1e5e29 |
1480 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1481 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1482 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1483 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1484 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1485 | return (pm[0]<<16)|pm[1];\r |
1486 | }\r |
1487 | dprintf("s68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1488 | } else {\r |
cc68a136 |
1489 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
fa1e5e29 |
1490 | if(a<0x20000) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
1491 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1492 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1493 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1494 | else if (a < 0x220000) {\r |
1495 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1496 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1497 | return (pm[0]<<16)|pm[1];\r |
1498 | }\r |
1499 | }\r |
1500 | dprintf("m68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1501 | }\r |
b837b69b |
1502 | return 0;\r |
cc68a136 |
1503 | }\r |
1504 | #endif // EMU_M68K\r |
1505 | \r |