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 |
cb4a513a |
38 | static u32 m68k_reg_read16(u32 a)\r |
cc68a136 |
39 | {\r |
40 | u32 d=0;\r |
41 | a &= 0x3e;\r |
672ad671 |
42 | // dprintf("m68k_regs r%2i: [%02x] @%06x", realsize&~1, a+(realsize&1), SekPc);\r |
cc68a136 |
43 | \r |
44 | switch (a) {\r |
672ad671 |
45 | case 0:\r |
c459aefd |
46 | d = ((Pico_mcd->s68k_regs[0x33]<<13)&0x8000) | Pico_mcd->m.busreq; // here IFL2 is always 0, just like in Gens\r |
672ad671 |
47 | goto end;\r |
cc68a136 |
48 | case 2:\r |
672ad671 |
49 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0xc7);\r |
1cd356a3 |
50 | dprintf("m68k_regs r3: %02x @%06x", (u8)d, SekPcS68k);\r |
cc68a136 |
51 | goto end;\r |
c459aefd |
52 | case 4:\r |
53 | d = Pico_mcd->s68k_regs[4]<<8;\r |
54 | goto end;\r |
55 | case 6:\r |
913ef4b7 |
56 | d = *(u16 *)(Pico_mcd->bios + 0x72);\r |
c459aefd |
57 | goto end;\r |
cc68a136 |
58 | case 8:\r |
cc68a136 |
59 | d = Read_CDC_Host(0);\r |
60 | goto end;\r |
c459aefd |
61 | case 0xA:\r |
fa1e5e29 |
62 | dprintf("m68k FIXME: reserved read");\r |
c459aefd |
63 | goto end;\r |
cc68a136 |
64 | case 0xC:\r |
1cd356a3 |
65 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
66 | dprintf("m68k stopwatch timer read (%04x)", d);\r |
1cd356a3 |
67 | goto end;\r |
cc68a136 |
68 | }\r |
69 | \r |
cc68a136 |
70 | if (a < 0x30) {\r |
71 | // comm flag/cmd/status (0xE-0x2F)\r |
72 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
73 | goto end;\r |
74 | }\r |
75 | \r |
fa1e5e29 |
76 | dprintf("m68k_regs FIXME invalid read @ %02x", a);\r |
cc68a136 |
77 | \r |
78 | end:\r |
79 | \r |
672ad671 |
80 | // dprintf("ret = %04x", d);\r |
cc68a136 |
81 | return d;\r |
82 | }\r |
4ff2d527 |
83 | #endif\r |
cc68a136 |
84 | \r |
4ff2d527 |
85 | #ifndef _ASM_CD_MEMORY_C\r |
86 | static\r |
87 | #endif\r |
88 | void m68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
89 | {\r |
90 | a &= 0x3f;\r |
672ad671 |
91 | // dprintf("m68k_regs w%2i: [%02x] %02x @%06x", realsize, a, d, SekPc);\r |
cc68a136 |
92 | \r |
93 | switch (a) {\r |
94 | case 0:\r |
672ad671 |
95 | d &= 1;\r |
cc68a136 |
96 | if ((d&1) && (Pico_mcd->s68k_regs[0x33]&(1<<2))) { dprintf("m68k: s68k irq 2"); SekInterruptS68k(2); }\r |
c459aefd |
97 | return;\r |
cc68a136 |
98 | case 1:\r |
672ad671 |
99 | d &= 3;\r |
51a902ae |
100 | if (!(d&1)) Pico_mcd->m.state_flags |= 1; // reset pending, needed to be sure we fetch the right vectors on reset\r |
c459aefd |
101 | if ( (Pico_mcd->m.busreq&1) != (d&1)) dprintf("m68k: s68k reset %i", !(d&1));\r |
102 | if ( (Pico_mcd->m.busreq&2) != (d&2)) dprintf("m68k: s68k brq %i", (d&2)>>1);\r |
51a902ae |
103 | if ((Pico_mcd->m.state_flags&1) && (d&3)==1) {\r |
cc68a136 |
104 | SekResetS68k(); // S68k comes out of RESET or BRQ state\r |
4ff2d527 |
105 | Pico_mcd->m.state_flags&=~1;\r |
106 | dprintf("m68k: resetting s68k, cycles=%i", SekCyclesLeft);\r |
cc68a136 |
107 | }\r |
c459aefd |
108 | Pico_mcd->m.busreq = d;\r |
109 | return;\r |
672ad671 |
110 | case 2:\r |
111 | Pico_mcd->s68k_regs[2] = d; // really use s68k side register\r |
112 | return;\r |
66fdc0f0 |
113 | case 3: {\r |
114 | u32 dold = Pico_mcd->s68k_regs[3]&0x1f;\r |
bf098bc5 |
115 | dprintf("m68k_regs w3: %02x @%06x", (u8)d, SekPc);\r |
672ad671 |
116 | d &= 0xc2;\r |
66fdc0f0 |
117 | if ((dold>>6) != ((d>>6)&3))\r |
672ad671 |
118 | dprintf("m68k: prg bank: %i -> %i", (Pico_mcd->s68k_regs[a]>>6), ((d>>6)&3));\r |
119 | //if ((Pico_mcd->s68k_regs[3]&4) != (d&4)) dprintf("m68k: ram mode %i mbit", (d&4) ? 1 : 2);\r |
120 | //if ((Pico_mcd->s68k_regs[3]&2) != (d&2)) dprintf("m68k: %s", (d&4) ? ((d&2) ? "word swap req" : "noop?") :\r |
121 | // ((d&2) ? "word ram to s68k" : "word ram to m68k"));\r |
66fdc0f0 |
122 | if (dold & 4) {\r |
123 | d ^= 2; // writing 0 to DMNA actually sets it, 1 does nothing\r |
124 | } else {\r |
125 | //dold &= ~2; // ??\r |
126 | if (d & 2) dold &= ~1; // return word RAM to s68k in 2M mode\r |
127 | }\r |
128 | Pico_mcd->s68k_regs[3] = d | dold; // really use s68k side register\r |
129 | \r |
130 | /*\r |
131 | d |= Pico_mcd->s68k_regs[3]&0x1d;\r |
132 | if (!(d & 4) && (d & 2)) d &= ~1; // return word RAM to s68k in 2M mode\r |
133 | Pico_mcd->s68k_regs[3] = d; // really use s68k side register\r |
134 | */\r |
672ad671 |
135 | return;\r |
66fdc0f0 |
136 | }\r |
c459aefd |
137 | case 6:\r |
d1df8786 |
138 | Pico_mcd->bios[0x72 + 1] = d; // simple hint vector changer\r |
c459aefd |
139 | return;\r |
140 | case 7:\r |
d1df8786 |
141 | Pico_mcd->bios[0x72] = d;\r |
913ef4b7 |
142 | dprintf("hint vector set to %08x", PicoRead32(0x70));\r |
c459aefd |
143 | return;\r |
cc68a136 |
144 | case 0xe:\r |
672ad671 |
145 | //dprintf("m68k: comm flag: %02x", d);\r |
cc68a136 |
146 | Pico_mcd->s68k_regs[0xe] = d;\r |
c459aefd |
147 | return;\r |
672ad671 |
148 | }\r |
149 | \r |
150 | if ((a&0xf0) == 0x10) {\r |
cc68a136 |
151 | Pico_mcd->s68k_regs[a] = d;\r |
672ad671 |
152 | return;\r |
cc68a136 |
153 | }\r |
154 | \r |
fa1e5e29 |
155 | dprintf("m68k FIXME: invalid write? [%02x] %02x", a, d);\r |
cc68a136 |
156 | }\r |
157 | \r |
158 | \r |
913ef4b7 |
159 | #define READ_FONT_DATA(basemask) \\r |
160 | { \\r |
161 | unsigned int fnt = *(unsigned int *)(Pico_mcd->s68k_regs + 0x4c); \\r |
162 | unsigned int col0 = (fnt >> 8) & 0x0f, col1 = (fnt >> 12) & 0x0f; \\r |
163 | if (fnt & (basemask << 0)) d = col1 ; else d = col0; \\r |
164 | if (fnt & (basemask << 1)) d |= col1 << 4; else d |= col0 << 4; \\r |
165 | if (fnt & (basemask << 2)) d |= col1 << 8; else d |= col0 << 8; \\r |
166 | if (fnt & (basemask << 3)) d |= col1 << 12; else d |= col0 << 12; \\r |
167 | }\r |
168 | \r |
cc68a136 |
169 | \r |
4ff2d527 |
170 | #ifndef _ASM_CD_MEMORY_C\r |
171 | static\r |
172 | #endif\r |
173 | u32 s68k_reg_read16(u32 a)\r |
cc68a136 |
174 | {\r |
175 | u32 d=0;\r |
cc68a136 |
176 | \r |
672ad671 |
177 | // dprintf("s68k_regs r%2i: [%02x] @ %06x", realsize&~1, a+(realsize&1), SekPcS68k);\r |
cc68a136 |
178 | \r |
179 | switch (a) {\r |
180 | case 0:\r |
cb4a513a |
181 | d = ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state\r |
c459aefd |
182 | goto end;\r |
672ad671 |
183 | case 2:\r |
184 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0x1f);\r |
4ff2d527 |
185 | dprintf("s68k_regs r3: %02x @%06x", (u8)d, SekPcS68k);\r |
672ad671 |
186 | goto end;\r |
cc68a136 |
187 | case 6:\r |
188 | d = CDC_Read_Reg();\r |
189 | goto end;\r |
190 | case 8:\r |
cb4a513a |
191 | d = Read_CDC_Host(1); // Gens returns 0 here on byte reads\r |
cc68a136 |
192 | goto end;\r |
193 | case 0xC:\r |
4f265db7 |
194 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
195 | dprintf("s68k stopwatch timer read (%04x)", d);\r |
4f265db7 |
196 | goto end;\r |
d1df8786 |
197 | case 0x30:\r |
4ff2d527 |
198 | dprintf("s68k int3 timer read (%02x%02x)", Pico_mcd->s68k_regs[30], Pico_mcd->s68k_regs[31]);\r |
cc68a136 |
199 | break;\r |
200 | case 0x34: // fader\r |
201 | d = 0; // no busy bit\r |
202 | goto end;\r |
913ef4b7 |
203 | case 0x50: // font data (check: Lunar 2, Silpheed)\r |
204 | READ_FONT_DATA(0x00100000);\r |
205 | goto end;\r |
206 | case 0x52:\r |
207 | READ_FONT_DATA(0x00010000);\r |
208 | goto end;\r |
209 | case 0x54:\r |
210 | READ_FONT_DATA(0x10000000);\r |
211 | goto end;\r |
212 | case 0x56:\r |
213 | READ_FONT_DATA(0x01000000);\r |
214 | goto end;\r |
cc68a136 |
215 | }\r |
216 | \r |
217 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
218 | \r |
219 | end:\r |
220 | \r |
672ad671 |
221 | // dprintf("ret = %04x", d);\r |
cc68a136 |
222 | \r |
223 | return d;\r |
224 | }\r |
225 | \r |
4ff2d527 |
226 | #ifndef _ASM_CD_MEMORY_C\r |
227 | static\r |
228 | #endif\r |
229 | void s68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
230 | {\r |
672ad671 |
231 | //dprintf("s68k_regs w%2i: [%02x] %02x @ %06x", realsize, a, d, SekPcS68k);\r |
cc68a136 |
232 | \r |
233 | // TODO: review against Gens\r |
48e8482f |
234 | // Warning: d might have upper bits set\r |
cc68a136 |
235 | switch (a) {\r |
672ad671 |
236 | case 2:\r |
237 | return; // only m68k can change WP\r |
fa1e5e29 |
238 | case 3: {\r |
239 | int dold = Pico_mcd->s68k_regs[3];\r |
bf098bc5 |
240 | dprintf("s68k_regs w3: %02x @%06x", (u8)d, SekPc);\r |
672ad671 |
241 | d &= 0x1d;\r |
4ff2d527 |
242 | d |= dold&0xc2;\r |
d0d47c5b |
243 | if (d&4) {\r |
4ff2d527 |
244 | if ((d ^ dold) & 5) {\r |
245 | d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit\r |
246 | #ifdef _ASM_CD_MEMORY_C\r |
247 | PicoMemResetCD(d);\r |
248 | #endif\r |
249 | }\r |
48e8482f |
250 | #ifdef _ASM_CD_MEMORY_C\r |
251 | if ((d ^ dold) & 0x1d)\r |
252 | PicoMemResetCDdecode(d);\r |
253 | #endif\r |
fa1e5e29 |
254 | if (!(dold & 4)) {\r |
255 | dprintf("wram mode 2M->1M");\r |
256 | wram_2M_to_1M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
257 | }\r |
d0d47c5b |
258 | } else {\r |
fa1e5e29 |
259 | if (dold & 4) {\r |
260 | dprintf("wram mode 1M->2M");\r |
4ff2d527 |
261 | if (!(d&1)) { // it didn't set the ret bit, which means it doesn't want to give WRAM to m68k\r |
262 | d &= ~3;\r |
263 | d |= (dold&1) ? 2 : 1; // then give it to the one which had bank0 in 1M mode\r |
264 | }\r |
fa1e5e29 |
265 | wram_1M_to_2M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
266 | #ifdef _ASM_CD_MEMORY_C\r |
267 | PicoMemResetCD(d);\r |
268 | #endif\r |
269 | }\r |
270 | else\r |
271 | d |= dold&1;\r |
272 | if (d&1) d &= ~2; // return word RAM to m68k in 2M mode\r |
d0d47c5b |
273 | }\r |
672ad671 |
274 | break;\r |
fa1e5e29 |
275 | }\r |
cc68a136 |
276 | case 4:\r |
277 | dprintf("s68k CDC dest: %x", d&7);\r |
278 | Pico_mcd->s68k_regs[4] = (Pico_mcd->s68k_regs[4]&0xC0) | (d&7); // CDC mode\r |
279 | return;\r |
280 | case 5:\r |
c459aefd |
281 | //dprintf("s68k CDC reg addr: %x", d&0xf);\r |
cc68a136 |
282 | break;\r |
283 | case 7:\r |
284 | CDC_Write_Reg(d);\r |
285 | return;\r |
286 | case 0xa:\r |
287 | dprintf("s68k set CDC dma addr");\r |
288 | break;\r |
d1df8786 |
289 | case 0xc:\r |
4f265db7 |
290 | case 0xd:\r |
d1df8786 |
291 | dprintf("s68k set stopwatch timer");\r |
4f265db7 |
292 | Pico_mcd->m.timer_stopwatch = 0;\r |
293 | return;\r |
1cd356a3 |
294 | case 0xe:\r |
295 | Pico_mcd->s68k_regs[0Xf] = (d>>1) | (d<<7); // ror8, Gens note: Dragons lair\r |
296 | Pico_mcd->m.timer_stopwatch = 0;\r |
297 | return;\r |
d1df8786 |
298 | case 0x31:\r |
4f265db7 |
299 | dprintf("s68k set int3 timer: %02x", d);\r |
48e8482f |
300 | Pico_mcd->m.timer_int3 = (d & 0xff) << 16;\r |
d1df8786 |
301 | break;\r |
cc68a136 |
302 | case 0x33: // IRQ mask\r |
303 | dprintf("s68k irq mask: %02x", d);\r |
304 | if ((d&(1<<4)) && (Pico_mcd->s68k_regs[0x37]&4) && !(Pico_mcd->s68k_regs[0x33]&(1<<4))) {\r |
305 | CDD_Export_Status();\r |
cc68a136 |
306 | }\r |
307 | break;\r |
308 | case 0x34: // fader\r |
309 | Pico_mcd->s68k_regs[a] = (u8) d & 0x7f;\r |
310 | return;\r |
672ad671 |
311 | case 0x36:\r |
312 | return; // d/m bit is unsetable\r |
313 | case 0x37: {\r |
314 | u32 d_old = Pico_mcd->s68k_regs[0x37];\r |
315 | Pico_mcd->s68k_regs[0x37] = d&7;\r |
316 | if ((d&4) && !(d_old&4)) {\r |
cc68a136 |
317 | CDD_Export_Status();\r |
cc68a136 |
318 | }\r |
672ad671 |
319 | return;\r |
320 | }\r |
cc68a136 |
321 | case 0x4b:\r |
322 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
323 | CDD_Import_Command();\r |
324 | return;\r |
325 | }\r |
326 | \r |
1cd356a3 |
327 | if ((a&0x1f0) == 0x10 || (a >= 0x38 && a < 0x42))\r |
cc68a136 |
328 | {\r |
fa1e5e29 |
329 | dprintf("s68k FIXME: invalid write @ %02x?", a);\r |
cc68a136 |
330 | return;\r |
331 | }\r |
332 | \r |
333 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
334 | }\r |
335 | \r |
336 | \r |
4ff2d527 |
337 | #ifndef _ASM_CD_MEMORY_C\r |
fa1e5e29 |
338 | static u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
339 | {\r |
340 | u32 d=0;\r |
341 | \r |
672ad671 |
342 | if ((a&0xffffc0)==0xa12000) {\r |
cb4a513a |
343 | d=m68k_reg_read16(a);\r |
672ad671 |
344 | goto end;\r |
345 | }\r |
cc68a136 |
346 | \r |
fa1e5e29 |
347 | dprintf("m68k FIXME: unusual r%i: %06x @%06x", realsize&~1, (a&0xfffffe)+(realsize&1), SekPc);\r |
cc68a136 |
348 | \r |
349 | end:\r |
350 | return d;\r |
351 | }\r |
352 | \r |
cc68a136 |
353 | \r |
fa1e5e29 |
354 | static void OtherWrite8End(u32 a, u32 d, int realsize)\r |
cc68a136 |
355 | {\r |
cb4a513a |
356 | if ((a&0xffffc0)==0xa12000) { m68k_reg_write8(a, d); return; }\r |
cc68a136 |
357 | \r |
fa1e5e29 |
358 | dprintf("m68k FIXME: strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
359 | }\r |
360 | \r |
cc68a136 |
361 | \r |
fa1e5e29 |
362 | #undef _ASM_MEMORY_C\r |
363 | #include "../MemoryCmn.c"\r |
4ff2d527 |
364 | #include "cell_map.c"\r |
365 | #endif // !def _ASM_CD_MEMORY_C\r |
cc68a136 |
366 | \r |
367 | // -----------------------------------------------------------------\r |
368 | // Read Rom and read Ram\r |
369 | \r |
4ff2d527 |
370 | //u8 PicoReadM68k8_(u32 a);\r |
371 | #ifdef _ASM_CD_MEMORY_C\r |
372 | u8 PicoReadM68k8(u32 a);\r |
373 | #else\r |
374 | static u8 PicoReadM68k8(u32 a)\r |
cc68a136 |
375 | {\r |
376 | u32 d=0;\r |
377 | \r |
378 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
379 | \r |
380 | a&=0xffffff;\r |
381 | \r |
382 | if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios\r |
383 | \r |
384 | // prg RAM\r |
4ff2d527 |
385 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
386 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
387 | d = *(prg_bank+((a^1)&0x1ffff));\r |
388 | goto end;\r |
389 | }\r |
390 | \r |
d0d47c5b |
391 | // word RAM\r |
392 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
393 | wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
394 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
395 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
396 | if (a >= 0x220000)\r |
397 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
398 | else a &= 0x1ffff;\r |
399 | d = Pico_mcd->word_ram1M[bank][a^1];\r |
d0d47c5b |
400 | } else {\r |
401 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
402 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
403 | }\r |
913ef4b7 |
404 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
405 | goto end;\r |
406 | }\r |
407 | \r |
cc68a136 |
408 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
409 | \r |
c459aefd |
410 | if ((a&0xffffc0)==0xa12000)\r |
411 | rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
412 | \r |
cc68a136 |
413 | d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r |
414 | \r |
c459aefd |
415 | if ((a&0xffffc0)==0xa12000)\r |
416 | rdprintf("ret = %02x", (u8)d);\r |
672ad671 |
417 | \r |
cc68a136 |
418 | end:\r |
419 | \r |
420 | #ifdef __debug_io\r |
421 | dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
422 | #endif\r |
423 | return (u8)d;\r |
424 | }\r |
4ff2d527 |
425 | #endif\r |
cc68a136 |
426 | \r |
ab0607f7 |
427 | \r |
4ff2d527 |
428 | #ifdef _ASM_CD_MEMORY_C\r |
429 | u16 PicoReadM68k16(u32 a);\r |
430 | #else\r |
431 | static u16 PicoReadM68k16(u32 a)\r |
cc68a136 |
432 | {\r |
433 | u16 d=0;\r |
434 | \r |
435 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
436 | \r |
437 | a&=0xfffffe;\r |
438 | \r |
439 | if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios\r |
440 | \r |
441 | // prg RAM\r |
4ff2d527 |
442 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
443 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
444 | d = *(u16 *)(prg_bank+(a&0x1fffe));\r |
445 | goto end;\r |
446 | }\r |
447 | \r |
d0d47c5b |
448 | // word RAM\r |
449 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
450 | wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
451 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
452 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
453 | if (a >= 0x220000)\r |
454 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
455 | else a &= 0x1fffe;\r |
456 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
d0d47c5b |
457 | } else {\r |
458 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
459 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
460 | }\r |
913ef4b7 |
461 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
462 | goto end;\r |
463 | }\r |
464 | \r |
c459aefd |
465 | if ((a&0xffffc0)==0xa12000)\r |
466 | rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
467 | \r |
cc68a136 |
468 | d = (u16)OtherRead16(a, 16);\r |
469 | \r |
c459aefd |
470 | if ((a&0xffffc0)==0xa12000)\r |
471 | rdprintf("ret = %04x", d);\r |
672ad671 |
472 | \r |
cc68a136 |
473 | end:\r |
474 | \r |
475 | #ifdef __debug_io\r |
476 | dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
477 | #endif\r |
478 | return d;\r |
479 | }\r |
4ff2d527 |
480 | #endif\r |
cc68a136 |
481 | \r |
ab0607f7 |
482 | \r |
4ff2d527 |
483 | #ifdef _ASM_CD_MEMORY_C\r |
484 | u32 PicoReadM68k32(u32 a);\r |
485 | #else\r |
486 | static u32 PicoReadM68k32(u32 a)\r |
cc68a136 |
487 | {\r |
488 | u32 d=0;\r |
489 | \r |
490 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
491 | \r |
492 | a&=0xfffffe;\r |
493 | \r |
494 | if (a < 0x20000) { u16 *pm=(u16 *)(Pico_mcd->bios+a); d = (pm[0]<<16)|pm[1]; goto end; } // bios\r |
495 | \r |
496 | // prg RAM\r |
4ff2d527 |
497 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
498 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
499 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
500 | d = (pm[0]<<16)|pm[1];\r |
501 | goto end;\r |
502 | }\r |
503 | \r |
d0d47c5b |
504 | // word RAM\r |
505 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
506 | wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
507 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
508 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
509 | if (a >= 0x220000) { // cell arranged\r |
510 | u32 a1, a2;\r |
511 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
512 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
513 | else a2 = a1 + 2;\r |
514 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16;\r |
515 | d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2);\r |
bf098bc5 |
516 | } else {\r |
fa1e5e29 |
517 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
bf098bc5 |
518 | }\r |
d0d47c5b |
519 | } else {\r |
520 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
521 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
522 | }\r |
913ef4b7 |
523 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
524 | goto end;\r |
525 | }\r |
526 | \r |
c459aefd |
527 | if ((a&0xffffc0)==0xa12000)\r |
528 | rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
529 | \r |
cc68a136 |
530 | d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
531 | \r |
c459aefd |
532 | if ((a&0xffffc0)==0xa12000)\r |
533 | rdprintf("ret = %08x", d);\r |
672ad671 |
534 | \r |
cc68a136 |
535 | end:\r |
536 | #ifdef __debug_io\r |
537 | dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
538 | #endif\r |
539 | return d;\r |
540 | }\r |
4ff2d527 |
541 | #endif\r |
cc68a136 |
542 | \r |
ab0607f7 |
543 | \r |
cc68a136 |
544 | // -----------------------------------------------------------------\r |
545 | // Write Ram\r |
546 | \r |
4ff2d527 |
547 | #ifdef _ASM_CD_MEMORY_C\r |
548 | void PicoWriteM68k8(u32 a,u8 d);\r |
549 | #else\r |
550 | static void PicoWriteM68k8(u32 a,u8 d)\r |
cc68a136 |
551 | {\r |
552 | #ifdef __debug_io\r |
553 | dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
554 | #endif\r |
555 | //if ((a&0xe0ffff)==0xe0a9ba+0x69c)\r |
556 | // dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
557 | \r |
558 | \r |
ab0607f7 |
559 | if ((a&0xe00000)==0xe00000) { // Ram\r |
560 | *(u8 *)(Pico.ram+((a^1)&0xffff)) = d;\r |
561 | return;\r |
562 | }\r |
cc68a136 |
563 | \r |
564 | a&=0xffffff;\r |
565 | \r |
566 | // prg RAM\r |
4ff2d527 |
567 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
568 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
bf098bc5 |
569 | *(u8 *)(prg_bank+((a^1)&0x1ffff))=d;\r |
cc68a136 |
570 | return;\r |
571 | }\r |
572 | \r |
d0d47c5b |
573 | // word RAM\r |
574 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
575 | wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc);\r |
d0d47c5b |
576 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
577 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
578 | if (a >= 0x220000)\r |
579 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
580 | else a &= 0x1ffff;\r |
581 | *(u8 *)(Pico_mcd->word_ram1M[bank]+(a^1))=d;\r |
d0d47c5b |
582 | } else {\r |
583 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
584 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
585 | }\r |
586 | return;\r |
587 | }\r |
588 | \r |
c459aefd |
589 | if ((a&0xffffc0)==0xa12000)\r |
590 | rdprintf("m68k_regs w8: [%02x] %02x @%06x", a&0x3f, d, SekPc);\r |
672ad671 |
591 | \r |
cc68a136 |
592 | OtherWrite8(a,d,8);\r |
593 | }\r |
4ff2d527 |
594 | #endif\r |
cc68a136 |
595 | \r |
ab0607f7 |
596 | \r |
4ff2d527 |
597 | #ifdef _ASM_CD_MEMORY_C\r |
598 | void PicoWriteM68k16(u32 a,u16 d);\r |
599 | #else\r |
600 | static void PicoWriteM68k16(u32 a,u16 d)\r |
cc68a136 |
601 | {\r |
602 | #ifdef __debug_io\r |
603 | dprintf("w16: %06x, %04x", a&0xffffff, d);\r |
604 | #endif\r |
cc68a136 |
605 | // dprintf("w16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
606 | \r |
ab0607f7 |
607 | if ((a&0xe00000)==0xe00000) { // Ram\r |
608 | *(u16 *)(Pico.ram+(a&0xfffe))=d;\r |
609 | return;\r |
610 | }\r |
cc68a136 |
611 | \r |
612 | a&=0xfffffe;\r |
613 | \r |
614 | // prg RAM\r |
4ff2d527 |
615 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
616 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
617 | *(u16 *)(prg_bank+(a&0x1fffe))=d;\r |
618 | return;\r |
619 | }\r |
620 | \r |
d0d47c5b |
621 | // word RAM\r |
622 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
623 | wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc);\r |
d0d47c5b |
624 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
625 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
626 | if (a >= 0x220000)\r |
627 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
628 | else a &= 0x1fffe;\r |
629 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a)=d;\r |
d0d47c5b |
630 | } else {\r |
631 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
632 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
633 | }\r |
634 | return;\r |
635 | }\r |
636 | \r |
c459aefd |
637 | if ((a&0xffffc0)==0xa12000)\r |
638 | rdprintf("m68k_regs w16: [%02x] %04x @%06x", a&0x3f, d, SekPc);\r |
cc68a136 |
639 | \r |
640 | OtherWrite16(a,d);\r |
641 | }\r |
4ff2d527 |
642 | #endif\r |
cc68a136 |
643 | \r |
ab0607f7 |
644 | \r |
4ff2d527 |
645 | #ifdef _ASM_CD_MEMORY_C\r |
646 | void PicoWriteM68k32(u32 a,u32 d);\r |
647 | #else\r |
648 | static void PicoWriteM68k32(u32 a,u32 d)\r |
cc68a136 |
649 | {\r |
650 | #ifdef __debug_io\r |
651 | dprintf("w32: %06x, %08x", a&0xffffff, d);\r |
652 | #endif\r |
653 | \r |
654 | if ((a&0xe00000)==0xe00000)\r |
655 | {\r |
656 | // Ram:\r |
657 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
658 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
659 | return;\r |
660 | }\r |
661 | \r |
662 | a&=0xfffffe;\r |
663 | \r |
664 | // prg RAM\r |
4ff2d527 |
665 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
666 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
667 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
668 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
669 | return;\r |
670 | }\r |
671 | \r |
672ad671 |
672 | // word RAM\r |
d0d47c5b |
673 | if ((a&0xfc0000)==0x200000) {\r |
674 | if (d != 0) // don't log clears\r |
913ef4b7 |
675 | wrdprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc);\r |
d0d47c5b |
676 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
677 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
678 | if (a >= 0x220000) { // cell arranged\r |
679 | u32 a1, a2;\r |
680 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
681 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
682 | else a2 = a1 + 2;\r |
683 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16;\r |
684 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d;\r |
bf098bc5 |
685 | } else {\r |
fa1e5e29 |
686 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
687 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
bf098bc5 |
688 | }\r |
d0d47c5b |
689 | } else {\r |
690 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
691 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
692 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
693 | }\r |
672ad671 |
694 | return;\r |
d0d47c5b |
695 | }\r |
672ad671 |
696 | \r |
c459aefd |
697 | if ((a&0xffffc0)==0xa12000)\r |
698 | rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);\r |
cc68a136 |
699 | \r |
700 | OtherWrite16(a, (u16)(d>>16));\r |
701 | OtherWrite16(a+2,(u16)d);\r |
702 | }\r |
4ff2d527 |
703 | #endif\r |
cc68a136 |
704 | \r |
705 | \r |
706 | // -----------------------------------------------------------------\r |
707 | \r |
4ff2d527 |
708 | #ifdef _ASM_CD_MEMORY_C\r |
709 | u8 PicoReadS68k8(u32 a);\r |
710 | #else\r |
711 | static u8 PicoReadS68k8(u32 a)\r |
cc68a136 |
712 | {\r |
713 | u32 d=0;\r |
714 | \r |
715 | a&=0xffffff;\r |
716 | \r |
717 | // prg RAM\r |
718 | if (a < 0x80000) {\r |
719 | d = *(Pico_mcd->prg_ram+(a^1));\r |
720 | goto end;\r |
721 | }\r |
722 | \r |
723 | // regs\r |
724 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
725 | a &= 0x1ff;\r |
726 | rdprintf("s68k_regs r8: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
727 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
728 | d = gfx_cd_read(a&~1);\r |
729 | else d = s68k_reg_read16(a&~1);\r |
730 | if ((a&1)==0) d>>=8;\r |
c459aefd |
731 | rdprintf("ret = %02x", (u8)d);\r |
cc68a136 |
732 | goto end;\r |
733 | }\r |
734 | \r |
d0d47c5b |
735 | // word RAM (2M area)\r |
736 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
fa1e5e29 |
737 | // test: batman returns\r |
913ef4b7 |
738 | wrdprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
739 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
740 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
741 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
742 | if (a&1) d &= 0x0f;\r |
743 | else d >>= 4;\r |
744 | dprintf("FIXME: decode");\r |
d0d47c5b |
745 | } else {\r |
746 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
747 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
748 | }\r |
913ef4b7 |
749 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
750 | goto end;\r |
751 | }\r |
752 | \r |
753 | // word RAM (1M area)\r |
68cba51e |
754 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
755 | int bank;\r |
913ef4b7 |
756 | wrdprintf("s68k_wram1M r8: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
757 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
758 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
759 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
760 | d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff];\r |
913ef4b7 |
761 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
762 | goto end;\r |
763 | }\r |
764 | \r |
4f265db7 |
765 | // PCM\r |
766 | if ((a&0xff8000)==0xff0000) {\r |
1cd356a3 |
767 | dprintf("s68k_pcm r8: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
768 | a &= 0x7fff;\r |
769 | if (a >= 0x2000)\r |
770 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
771 | else if (a >= 0x20) {\r |
772 | a &= 0x1e;\r |
773 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
774 | if (a & 2) d >>= 8;\r |
775 | }\r |
776 | dprintf("ret = %02x", (u8)d);\r |
777 | goto end;\r |
778 | }\r |
779 | \r |
ab0607f7 |
780 | // bram\r |
781 | if ((a&0xff0000)==0xfe0000) {\r |
782 | d = Pico_mcd->bram[(a>>1)&0x1fff];\r |
783 | goto end;\r |
784 | }\r |
785 | \r |
cc68a136 |
786 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
787 | \r |
788 | end:\r |
789 | \r |
790 | #ifdef __debug_io2\r |
791 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
792 | #endif\r |
793 | return (u8)d;\r |
794 | }\r |
4ff2d527 |
795 | #endif\r |
cc68a136 |
796 | \r |
ab0607f7 |
797 | \r |
4ff2d527 |
798 | //u16 PicoReadS68k16_(u32 a);\r |
799 | #ifdef _ASM_CD_MEMORY_C\r |
800 | u16 PicoReadS68k16(u32 a);\r |
801 | #else\r |
802 | static u16 PicoReadS68k16(u32 a)\r |
cc68a136 |
803 | {\r |
4f265db7 |
804 | u32 d=0;\r |
cc68a136 |
805 | \r |
806 | a&=0xfffffe;\r |
807 | \r |
808 | // prg RAM\r |
809 | if (a < 0x80000) {\r |
810 | d = *(u16 *)(Pico_mcd->prg_ram+a);\r |
811 | goto end;\r |
812 | }\r |
813 | \r |
814 | // regs\r |
815 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
816 | a &= 0x1fe;\r |
817 | rdprintf("s68k_regs r16: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
818 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
819 | d = gfx_cd_read(a);\r |
820 | else d = s68k_reg_read16(a);\r |
c459aefd |
821 | rdprintf("ret = %04x", d);\r |
cc68a136 |
822 | goto end;\r |
823 | }\r |
824 | \r |
d0d47c5b |
825 | // word RAM (2M area)\r |
826 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
827 | wrdprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
828 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
829 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
830 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
831 | d |= d << 4; d &= ~0xf0;\r |
832 | dprintf("FIXME: decode");\r |
d0d47c5b |
833 | } else {\r |
834 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
835 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
836 | }\r |
913ef4b7 |
837 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
838 | goto end;\r |
839 | }\r |
840 | \r |
841 | // word RAM (1M area)\r |
68cba51e |
842 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
843 | int bank;\r |
913ef4b7 |
844 | wrdprintf("s68k_wram1M r16: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
845 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
846 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
847 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
848 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
913ef4b7 |
849 | wrdprintf("ret = %04x", d);\r |
ab0607f7 |
850 | goto end;\r |
851 | }\r |
852 | \r |
853 | // bram\r |
854 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
855 | dprintf("FIXME: s68k_bram r16: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
856 | a = (a>>1)&0x1fff;\r |
4f265db7 |
857 | d = Pico_mcd->bram[a++]; // Gens does little endian here, and so do we..\r |
4ff2d527 |
858 | d|= Pico_mcd->bram[a++] << 8; // This is most likely wrong\r |
ab0607f7 |
859 | dprintf("ret = %04x", d);\r |
d0d47c5b |
860 | goto end;\r |
861 | }\r |
862 | \r |
4f265db7 |
863 | // PCM\r |
864 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
865 | dprintf("FIXME: s68k_pcm r16: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
866 | a &= 0x7fff;\r |
867 | if (a >= 0x2000)\r |
868 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
869 | else if (a >= 0x20) {\r |
870 | a &= 0x1e;\r |
871 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
872 | if (a & 2) d >>= 8;\r |
873 | }\r |
874 | dprintf("ret = %04x", d);\r |
875 | goto end;\r |
876 | }\r |
877 | \r |
cc68a136 |
878 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
879 | \r |
880 | end:\r |
881 | \r |
882 | #ifdef __debug_io2\r |
883 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
884 | #endif\r |
885 | return d;\r |
886 | }\r |
4ff2d527 |
887 | #endif\r |
cc68a136 |
888 | \r |
ab0607f7 |
889 | \r |
4ff2d527 |
890 | #ifdef _ASM_CD_MEMORY_C\r |
891 | u32 PicoReadS68k32(u32 a);\r |
892 | #else\r |
893 | static u32 PicoReadS68k32(u32 a)\r |
cc68a136 |
894 | {\r |
895 | u32 d=0;\r |
896 | \r |
897 | a&=0xfffffe;\r |
898 | \r |
899 | // prg RAM\r |
900 | if (a < 0x80000) {\r |
901 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
902 | d = (pm[0]<<16)|pm[1];\r |
903 | goto end;\r |
904 | }\r |
905 | \r |
906 | // regs\r |
907 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
908 | a &= 0x1fe;\r |
909 | rdprintf("s68k_regs r32: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
910 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
911 | d = (gfx_cd_read(a)<<16)|gfx_cd_read(a+2);\r |
912 | else d = (s68k_reg_read16(a)<<16)|s68k_reg_read16(a+2);\r |
c459aefd |
913 | rdprintf("ret = %08x", d);\r |
cc68a136 |
914 | goto end;\r |
915 | }\r |
916 | \r |
d0d47c5b |
917 | // word RAM (2M area)\r |
918 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
919 | wrdprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
920 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
921 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
922 | a >>= 1;\r |
923 | d = Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] << 16;\r |
924 | d |= Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff];\r |
925 | d |= d << 4; d &= 0x0f0f0f0f;\r |
926 | dprintf("FIXME: decode");\r |
d0d47c5b |
927 | } else {\r |
928 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
929 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
930 | }\r |
913ef4b7 |
931 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
932 | goto end;\r |
933 | }\r |
934 | \r |
935 | // word RAM (1M area)\r |
68cba51e |
936 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
937 | int bank;\r |
913ef4b7 |
938 | wrdprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
939 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
940 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
941 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
942 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
913ef4b7 |
943 | wrdprintf("ret = %08x", d);\r |
ab0607f7 |
944 | goto end;\r |
945 | }\r |
946 | \r |
4f265db7 |
947 | // PCM\r |
948 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
949 | dprintf("FIXME: s68k_pcm r32: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
950 | a &= 0x7fff;\r |
951 | if (a >= 0x2000) {\r |
952 | a >>= 1;\r |
953 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] << 16;\r |
954 | d |= Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff];\r |
955 | } else if (a >= 0x20) {\r |
956 | a &= 0x1e;\r |
957 | if (a & 2) {\r |
958 | a >>= 2;\r |
959 | d = (Pico_mcd->pcm.ch[a].addr >> (PCM_STEP_SHIFT-8)) & 0xff0000;\r |
960 | d |= (Pico_mcd->pcm.ch[(a+1)&7].addr >> PCM_STEP_SHIFT) & 0xff;\r |
961 | } else {\r |
962 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
963 | d = ((d<<16)&0xff0000) | ((d>>8)&0xff); // PCM chip is LE\r |
964 | }\r |
965 | }\r |
966 | dprintf("ret = %08x", d);\r |
967 | goto end;\r |
968 | }\r |
969 | \r |
ab0607f7 |
970 | // bram\r |
971 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
972 | dprintf("FIXME: s68k_bram r32: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
973 | a = (a>>1)&0x1fff;\r |
974 | d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion..\r |
975 | d|= Pico_mcd->bram[a++] << 24;\r |
976 | d|= Pico_mcd->bram[a++];\r |
977 | d|= Pico_mcd->bram[a++] << 8;\r |
978 | dprintf("ret = %08x", d);\r |
d0d47c5b |
979 | goto end;\r |
980 | }\r |
981 | \r |
cc68a136 |
982 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
983 | \r |
984 | end:\r |
985 | \r |
986 | #ifdef __debug_io2\r |
987 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
988 | #endif\r |
989 | return d;\r |
990 | }\r |
4ff2d527 |
991 | #endif\r |
cc68a136 |
992 | \r |
ab0607f7 |
993 | \r |
a4030801 |
994 | #ifndef _ASM_CD_MEMORY_C\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 |
a4030801 |
1047 | #endif\r |
0a051f55 |
1048 | \r |
cc68a136 |
1049 | // -----------------------------------------------------------------\r |
1050 | \r |
48e8482f |
1051 | //void PicoWriteS68k8_(u32 a,u8 d);\r |
1052 | //void PicoWriteS68k8__(u32 a,u8 d);\r |
4ff2d527 |
1053 | #ifdef _ASM_CD_MEMORY_C\r |
1054 | void PicoWriteS68k8(u32 a,u8 d);\r |
1055 | #else\r |
1056 | static void PicoWriteS68k8(u32 a,u8 d)\r |
cc68a136 |
1057 | {\r |
1058 | #ifdef __debug_io2\r |
1059 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1060 | #endif\r |
1061 | \r |
1062 | a&=0xffffff;\r |
48e8482f |
1063 | #if 0\r |
1064 | PicoWriteS68k8_(a, d);\r |
1065 | /* if ((a&0xfc0000)!=0x080000) {\r |
1066 | PicoWriteS68k8_(a, d);\r |
1067 | return;\r |
1068 | }\r |
1069 | printf("r3: %02x\n", Pico_mcd->s68k_regs[3]);\r |
1070 | PicoWriteS68k8__(a,d);*/\r |
1071 | return;\r |
1072 | #endif\r |
cc68a136 |
1073 | \r |
1074 | // prg RAM\r |
1075 | if (a < 0x80000) {\r |
1076 | u8 *pm=(u8 *)(Pico_mcd->prg_ram+(a^1));\r |
1077 | *pm=d;\r |
1078 | return;\r |
1079 | }\r |
1080 | \r |
1081 | // regs\r |
1082 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1083 | a &= 0x1ff;\r |
1084 | rdprintf("s68k_regs w8: [%02x] %02x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1085 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1086 | gfx_cd_write16(a&~1, (d<<8)|d);\r |
cb4a513a |
1087 | else s68k_reg_write8(a,d);\r |
cc68a136 |
1088 | return;\r |
1089 | }\r |
1090 | \r |
d0d47c5b |
1091 | // word RAM (2M area)\r |
1092 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1093 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1094 | wrdprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1095 | if (r3 & 4) { // 1M decode mode?\r |
1096 | decode_write8(a, d, r3);\r |
d0d47c5b |
1097 | } else {\r |
1098 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1099 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
1100 | }\r |
1101 | return;\r |
1102 | }\r |
1103 | \r |
1104 | // word RAM (1M area)\r |
68cba51e |
1105 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
1106 | // Wing Commander tries to write here in wrong mode\r |
fa1e5e29 |
1107 | int bank;\r |
d0d47c5b |
1108 | if (d)\r |
913ef4b7 |
1109 | wrdprintf("s68k_wram1M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1110 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1111 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1112 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1113 | *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d;\r |
d0d47c5b |
1114 | return;\r |
1115 | }\r |
1116 | \r |
4f265db7 |
1117 | // PCM\r |
1118 | if ((a&0xff8000)==0xff0000) {\r |
1119 | a &= 0x7fff;\r |
1120 | if (a >= 0x2000)\r |
1121 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1122 | else if (a < 0x12)\r |
1123 | pcm_write(a>>1, d);\r |
1124 | return;\r |
1125 | }\r |
1126 | \r |
ab0607f7 |
1127 | // bram\r |
1128 | if ((a&0xff0000)==0xfe0000) {\r |
1129 | Pico_mcd->bram[(a>>1)&0x1fff] = d;\r |
1130 | SRam.changed = 1;\r |
1131 | return;\r |
1132 | }\r |
1133 | \r |
cc68a136 |
1134 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1135 | }\r |
4ff2d527 |
1136 | #endif\r |
cc68a136 |
1137 | \r |
ab0607f7 |
1138 | \r |
4ff2d527 |
1139 | #ifdef _ASM_CD_MEMORY_C\r |
1140 | void PicoWriteS68k16(u32 a,u16 d);\r |
1141 | #else\r |
1142 | static void PicoWriteS68k16(u32 a,u16 d)\r |
cc68a136 |
1143 | {\r |
1144 | #ifdef __debug_io2\r |
1145 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1146 | #endif\r |
1147 | \r |
1148 | a&=0xfffffe;\r |
1149 | \r |
1150 | // prg RAM\r |
1151 | if (a < 0x80000) {\r |
1152 | *(u16 *)(Pico_mcd->prg_ram+a)=d;\r |
1153 | return;\r |
1154 | }\r |
1155 | \r |
1156 | // regs\r |
1157 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1158 | a &= 0x1fe;\r |
1159 | rdprintf("s68k_regs w16: [%02x] %04x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1160 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1161 | gfx_cd_write16(a, d);\r |
cb4a513a |
1162 | else {\r |
1cd356a3 |
1163 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
1164 | Pico_mcd->s68k_regs[0xf] = d;\r |
4ff2d527 |
1165 | return;\r |
1cd356a3 |
1166 | }\r |
cb4a513a |
1167 | s68k_reg_write8(a, d>>8);\r |
1168 | s68k_reg_write8(a+1,d&0xff);\r |
1169 | }\r |
cc68a136 |
1170 | return;\r |
1171 | }\r |
1172 | \r |
d0d47c5b |
1173 | // word RAM (2M area)\r |
1174 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1175 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1176 | wrdprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1177 | if (r3 & 4) { // 1M decode mode?\r |
1178 | decode_write16(a, d, r3);\r |
d0d47c5b |
1179 | } else {\r |
1180 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1181 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
1182 | }\r |
1183 | return;\r |
1184 | }\r |
1185 | \r |
1186 | // word RAM (1M area)\r |
68cba51e |
1187 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1188 | int bank;\r |
d0d47c5b |
1189 | if (d)\r |
913ef4b7 |
1190 | wrdprintf("s68k_wram1M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1191 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1192 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1193 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1194 | *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d;\r |
d0d47c5b |
1195 | return;\r |
1196 | }\r |
1197 | \r |
4f265db7 |
1198 | // PCM\r |
1199 | if ((a&0xff8000)==0xff0000) {\r |
1200 | a &= 0x7fff;\r |
1201 | if (a >= 0x2000)\r |
1202 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1203 | else if (a < 0x12)\r |
1204 | pcm_write(a>>1, d & 0xff);\r |
1205 | return;\r |
1206 | }\r |
1207 | \r |
ab0607f7 |
1208 | // bram\r |
1209 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1210 | dprintf("s68k_bram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1211 | a = (a>>1)&0x1fff;\r |
1212 | Pico_mcd->bram[a++] = d; // Gens does little endian here, an so do we..\r |
1213 | Pico_mcd->bram[a++] = d >> 8;\r |
1214 | SRam.changed = 1;\r |
1215 | return;\r |
1216 | }\r |
1217 | \r |
cc68a136 |
1218 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1219 | }\r |
4ff2d527 |
1220 | #endif\r |
cc68a136 |
1221 | \r |
ab0607f7 |
1222 | \r |
4ff2d527 |
1223 | #ifdef _ASM_CD_MEMORY_C\r |
1224 | void PicoWriteS68k32(u32 a,u32 d);\r |
1225 | #else\r |
1226 | static void PicoWriteS68k32(u32 a,u32 d)\r |
cc68a136 |
1227 | {\r |
1228 | #ifdef __debug_io2\r |
1229 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1230 | #endif\r |
1231 | \r |
1232 | a&=0xfffffe;\r |
1233 | \r |
1234 | // prg RAM\r |
1235 | if (a < 0x80000) {\r |
1236 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
1237 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1238 | return;\r |
1239 | }\r |
1240 | \r |
1241 | // regs\r |
1242 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1243 | a &= 0x1fe;\r |
1244 | rdprintf("s68k_regs w32: [%02x] %08x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1245 | if (a >= 0x58 && a < 0x68) {\r |
48e8482f |
1246 | gfx_cd_write16(a, d>>16);\r |
1247 | gfx_cd_write16(a+2, d&0xffff);\r |
cb4a513a |
1248 | } else {\r |
1249 | s68k_reg_write8(a, d>>24);\r |
1250 | s68k_reg_write8(a+1,(d>>16)&0xff);\r |
1251 | s68k_reg_write8(a+2,(d>>8) &0xff);\r |
1252 | s68k_reg_write8(a+3, d &0xff);\r |
1253 | }\r |
cc68a136 |
1254 | return;\r |
1255 | }\r |
1256 | \r |
d0d47c5b |
1257 | // word RAM (2M area)\r |
1258 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1259 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1260 | wrdprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1261 | if (r3 & 4) { // 1M decode mode?\r |
1262 | decode_write16(a , d >> 16, r3);\r |
1263 | decode_write16(a+2, d , r3);\r |
d0d47c5b |
1264 | } else {\r |
1265 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1266 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
1267 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1268 | }\r |
1269 | return;\r |
1270 | }\r |
1271 | \r |
1272 | // word RAM (1M area)\r |
68cba51e |
1273 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1274 | int bank;\r |
1275 | u16 *pm;\r |
d0d47c5b |
1276 | if (d)\r |
913ef4b7 |
1277 | wrdprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1278 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1279 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1280 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1281 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1282 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
d0d47c5b |
1283 | return;\r |
1284 | }\r |
ab0607f7 |
1285 | \r |
4f265db7 |
1286 | // PCM\r |
1287 | if ((a&0xff8000)==0xff0000) {\r |
1288 | a &= 0x7fff;\r |
1289 | if (a >= 0x2000) {\r |
1290 | a >>= 1;\r |
1291 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] = (d >> 16);\r |
1292 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff] = d;\r |
1293 | } else if (a < 0x12) {\r |
1294 | a >>= 1;\r |
1295 | pcm_write(a, (d>>16) & 0xff);\r |
1296 | pcm_write(a+1, d & 0xff);\r |
1297 | }\r |
1298 | return;\r |
1299 | }\r |
1300 | \r |
ab0607f7 |
1301 | // bram\r |
1302 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1303 | dprintf("s68k_bram w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1304 | a = (a>>1)&0x1fff;\r |
1305 | Pico_mcd->bram[a++] = d >> 16; // middle endian? verify?\r |
1306 | Pico_mcd->bram[a++] = d >> 24;\r |
1307 | Pico_mcd->bram[a++] = d;\r |
1308 | Pico_mcd->bram[a++] = d >> 8;\r |
1309 | SRam.changed = 1;\r |
1310 | return;\r |
1311 | }\r |
1312 | \r |
cc68a136 |
1313 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1314 | }\r |
4ff2d527 |
1315 | #endif\r |
cc68a136 |
1316 | \r |
1317 | \r |
1318 | // -----------------------------------------------------------------\r |
1319 | \r |
b837b69b |
1320 | \r |
1321 | #if defined(EMU_C68K)\r |
1322 | static __inline int PicoMemBaseM68k(u32 pc)\r |
1323 | {\r |
fa1e5e29 |
1324 | if ((pc&0xe00000)==0xe00000)\r |
1325 | return (int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r |
b837b69b |
1326 | \r |
1327 | if (pc < 0x20000)\r |
fa1e5e29 |
1328 | return (int)Pico_mcd->bios; // Program Counter in BIOS\r |
1329 | \r |
1330 | if ((pc&0xfc0000)==0x200000)\r |
b837b69b |
1331 | {\r |
fa1e5e29 |
1332 | if (!(Pico_mcd->s68k_regs[3]&4))\r |
1333 | return (int)Pico_mcd->word_ram2M - 0x200000; // Program Counter in Word Ram\r |
1334 | if (pc < 0x220000) {\r |
1335 | int bank = (Pico_mcd->s68k_regs[3]&1);\r |
1336 | return (int)Pico_mcd->word_ram1M[bank] - 0x200000;\r |
1337 | }\r |
b837b69b |
1338 | }\r |
1339 | \r |
fa1e5e29 |
1340 | // Error - Program Counter is invalid\r |
1341 | dprintf("m68k FIXME: unhandled jump to %06x", pc);\r |
1342 | \r |
1343 | return (int)Pico_mcd->bios;\r |
b837b69b |
1344 | }\r |
1345 | \r |
1346 | \r |
1347 | static u32 PicoCheckPcM68k(u32 pc)\r |
1348 | {\r |
1349 | pc-=PicoCpu.membase; // Get real pc\r |
1350 | pc&=0xfffffe;\r |
1351 | \r |
1352 | PicoCpu.membase=PicoMemBaseM68k(pc);\r |
1353 | \r |
1354 | return PicoCpu.membase+pc;\r |
1355 | }\r |
1356 | \r |
1357 | \r |
1358 | static __inline int PicoMemBaseS68k(u32 pc)\r |
1359 | {\r |
fa1e5e29 |
1360 | if (pc < 0x80000) // PRG RAM\r |
1361 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1362 | \r |
fa1e5e29 |
1363 | if ((pc&0xfc0000)==0x080000) // WORD RAM 2M area (assume we are in the right mode..)\r |
1364 | return (int)Pico_mcd->word_ram2M - 0x080000;\r |
1365 | \r |
1366 | if ((pc&0xfe0000)==0x0c0000) { // word RAM 1M area\r |
1367 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1368 | return (int)Pico_mcd->word_ram1M[bank] - 0x0c0000;\r |
b837b69b |
1369 | }\r |
1370 | \r |
fa1e5e29 |
1371 | // Error - Program Counter is invalid\r |
1372 | dprintf("s68k FIXME: unhandled jump to %06x", pc);\r |
1373 | \r |
1374 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1375 | }\r |
1376 | \r |
1377 | \r |
1378 | static u32 PicoCheckPcS68k(u32 pc)\r |
1379 | {\r |
1380 | pc-=PicoCpuS68k.membase; // Get real pc\r |
1381 | pc&=0xfffffe;\r |
1382 | \r |
1383 | PicoCpuS68k.membase=PicoMemBaseS68k(pc);\r |
1384 | \r |
1385 | return PicoCpuS68k.membase+pc;\r |
1386 | }\r |
1387 | #endif\r |
1388 | \r |
1389 | \r |
1390 | void PicoMemSetupCD()\r |
1391 | {\r |
1392 | dprintf("PicoMemSetupCD()");\r |
1393 | #ifdef EMU_C68K\r |
1394 | // Setup m68k memory callbacks:\r |
1395 | PicoCpu.checkpc=PicoCheckPcM68k;\r |
1396 | PicoCpu.fetch8 =PicoCpu.read8 =PicoReadM68k8;\r |
1397 | PicoCpu.fetch16=PicoCpu.read16=PicoReadM68k16;\r |
1398 | PicoCpu.fetch32=PicoCpu.read32=PicoReadM68k32;\r |
1399 | PicoCpu.write8 =PicoWriteM68k8;\r |
1400 | PicoCpu.write16=PicoWriteM68k16;\r |
1401 | PicoCpu.write32=PicoWriteM68k32;\r |
1402 | // s68k\r |
1403 | PicoCpuS68k.checkpc=PicoCheckPcS68k;\r |
1404 | PicoCpuS68k.fetch8 =PicoCpuS68k.read8 =PicoReadS68k8;\r |
1405 | PicoCpuS68k.fetch16=PicoCpuS68k.read16=PicoReadS68k16;\r |
1406 | PicoCpuS68k.fetch32=PicoCpuS68k.read32=PicoReadS68k32;\r |
1407 | PicoCpuS68k.write8 =PicoWriteS68k8;\r |
1408 | PicoCpuS68k.write16=PicoWriteS68k16;\r |
1409 | PicoCpuS68k.write32=PicoWriteS68k32;\r |
1410 | #endif\r |
1411 | }\r |
1412 | \r |
1413 | \r |
cc68a136 |
1414 | #ifdef EMU_M68K\r |
1415 | unsigned char PicoReadCD8w (unsigned int a) {\r |
1416 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k8(a) : PicoReadM68k8(a);\r |
1417 | }\r |
1418 | unsigned short PicoReadCD16w(unsigned int a) {\r |
1419 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k16(a) : PicoReadM68k16(a);\r |
1420 | }\r |
1421 | unsigned int PicoReadCD32w(unsigned int a) {\r |
1422 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k32(a) : PicoReadM68k32(a);\r |
1423 | }\r |
1424 | void PicoWriteCD8w (unsigned int a, unsigned char d) {\r |
1425 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);\r |
1426 | }\r |
1427 | void PicoWriteCD16w(unsigned int a, unsigned short d) {\r |
1428 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);\r |
1429 | }\r |
1430 | void PicoWriteCD32w(unsigned int a, unsigned int d) {\r |
1431 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);\r |
1432 | }\r |
1433 | \r |
1434 | // these are allowed to access RAM\r |
1435 | unsigned int m68k_read_pcrelative_CD8 (unsigned int a) {\r |
1436 | a&=0xffffff;\r |
1437 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1438 | if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram\r |
fa1e5e29 |
1439 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1440 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1441 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1442 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1443 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1444 | }\r |
1445 | dprintf("s68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1446 | } else {\r |
cc68a136 |
1447 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
fa1e5e29 |
1448 | if(a<0x20000) return *(u8 *)(Pico.rom+(a^1)); // Bios\r |
1449 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1450 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1451 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1452 | else if (a < 0x220000) {\r |
1453 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1454 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1455 | }\r |
1456 | }\r |
1457 | dprintf("m68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1458 | }\r |
1459 | return 0;//(u8) lastread_d;\r |
1460 | }\r |
1461 | unsigned int m68k_read_pcrelative_CD16(unsigned int a) {\r |
1462 | a&=0xffffff;\r |
1463 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1464 | if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram\r |
fa1e5e29 |
1465 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1466 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1467 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1468 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1469 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1470 | }\r |
1471 | dprintf("s68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1472 | } else {\r |
cc68a136 |
1473 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
fa1e5e29 |
1474 | if(a<0x20000) return *(u16 *)(Pico.rom+(a&~1)); // Bios\r |
1475 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1476 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1477 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1478 | else if (a < 0x220000) {\r |
1479 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1480 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1481 | }\r |
1482 | }\r |
1483 | dprintf("m68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1484 | }\r |
b837b69b |
1485 | return 0;\r |
cc68a136 |
1486 | }\r |
1487 | unsigned int m68k_read_pcrelative_CD32(unsigned int a) {\r |
fa1e5e29 |
1488 | u16 *pm;\r |
cc68a136 |
1489 | a&=0xffffff;\r |
1490 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1491 | if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram\r |
fa1e5e29 |
1492 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1493 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1494 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\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 | dprintf("s68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1500 | } else {\r |
cc68a136 |
1501 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
fa1e5e29 |
1502 | if(a<0x20000) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
1503 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1504 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1505 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1506 | else if (a < 0x220000) {\r |
1507 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1508 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1509 | return (pm[0]<<16)|pm[1];\r |
1510 | }\r |
1511 | }\r |
1512 | dprintf("m68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1513 | }\r |
b837b69b |
1514 | return 0;\r |
cc68a136 |
1515 | }\r |
1516 | #endif // EMU_M68K\r |
1517 | \r |