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 |
7a1f6e45 |
36 | // poller detection\r |
37 | #define USE_POLL_DETECT\r |
38 | #define POLL_LIMIT 16\r |
39 | #define POLL_CYCLES 124\r |
40 | // int m68k_poll_addr, m68k_poll_cnt;\r |
41 | unsigned int s68k_poll_adclk, s68k_poll_cnt;\r |
cc68a136 |
42 | \r |
4ff2d527 |
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 |
7a1f6e45 |
135 | #ifdef USE_POLL_DETECT\r |
136 | if ((s68k_poll_adclk&0xfe) == 2 && s68k_poll_cnt > POLL_LIMIT) {\r |
137 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
138 | //printf("%05i:%03i: s68k poll release, a=%02x\n", Pico.m.frame_count, Pico.m.scanline, a);\r |
139 | }\r |
140 | #endif\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 |
7a1f6e45 |
150 | case 0xf:\r |
151 | d = (d << 1) | ((d >> 7) & 1); // rol8 1 (special case)\r |
cc68a136 |
152 | case 0xe:\r |
672ad671 |
153 | //dprintf("m68k: comm flag: %02x", d);\r |
cc68a136 |
154 | Pico_mcd->s68k_regs[0xe] = d;\r |
7a1f6e45 |
155 | #ifdef USE_POLL_DETECT\r |
156 | if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) {\r |
157 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
158 | //printf("%05i:%03i: s68k poll release, a=%02x\n", Pico.m.frame_count, Pico.m.scanline, a);\r |
159 | }\r |
160 | #endif\r |
c459aefd |
161 | return;\r |
672ad671 |
162 | }\r |
163 | \r |
164 | if ((a&0xf0) == 0x10) {\r |
cc68a136 |
165 | Pico_mcd->s68k_regs[a] = d;\r |
7a1f6e45 |
166 | #ifdef USE_POLL_DETECT\r |
167 | if ((a&0xfe) == (s68k_poll_adclk&0xfe) && s68k_poll_cnt > POLL_LIMIT) {\r |
168 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
169 | //printf("%05i:%03i: s68k poll release, a=%02x\n", Pico.m.frame_count, Pico.m.scanline, a);\r |
170 | }\r |
171 | #endif\r |
672ad671 |
172 | return;\r |
cc68a136 |
173 | }\r |
174 | \r |
fa1e5e29 |
175 | dprintf("m68k FIXME: invalid write? [%02x] %02x", a, d);\r |
cc68a136 |
176 | }\r |
177 | \r |
178 | \r |
913ef4b7 |
179 | #define READ_FONT_DATA(basemask) \\r |
180 | { \\r |
181 | unsigned int fnt = *(unsigned int *)(Pico_mcd->s68k_regs + 0x4c); \\r |
182 | unsigned int col0 = (fnt >> 8) & 0x0f, col1 = (fnt >> 12) & 0x0f; \\r |
183 | if (fnt & (basemask << 0)) d = col1 ; else d = col0; \\r |
184 | if (fnt & (basemask << 1)) d |= col1 << 4; else d |= col0 << 4; \\r |
185 | if (fnt & (basemask << 2)) d |= col1 << 8; else d |= col0 << 8; \\r |
186 | if (fnt & (basemask << 3)) d |= col1 << 12; else d |= col0 << 12; \\r |
187 | }\r |
188 | \r |
cc68a136 |
189 | \r |
4ff2d527 |
190 | #ifndef _ASM_CD_MEMORY_C\r |
191 | static\r |
192 | #endif\r |
193 | u32 s68k_reg_read16(u32 a)\r |
cc68a136 |
194 | {\r |
195 | u32 d=0;\r |
cc68a136 |
196 | \r |
672ad671 |
197 | // dprintf("s68k_regs r%2i: [%02x] @ %06x", realsize&~1, a+(realsize&1), SekPcS68k);\r |
cc68a136 |
198 | \r |
199 | switch (a) {\r |
200 | case 0:\r |
7a1f6e45 |
201 | return ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state\r |
672ad671 |
202 | case 2:\r |
203 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0x1f);\r |
4ff2d527 |
204 | dprintf("s68k_regs r3: %02x @%06x", (u8)d, SekPcS68k);\r |
7a1f6e45 |
205 | goto poll_detect;\r |
cc68a136 |
206 | case 6:\r |
7a1f6e45 |
207 | return CDC_Read_Reg();\r |
cc68a136 |
208 | case 8:\r |
7a1f6e45 |
209 | return Read_CDC_Host(1); // Gens returns 0 here on byte reads\r |
cc68a136 |
210 | case 0xC:\r |
4f265db7 |
211 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
212 | dprintf("s68k stopwatch timer read (%04x)", d);\r |
7a1f6e45 |
213 | return d;\r |
d1df8786 |
214 | case 0x30:\r |
7a1f6e45 |
215 | dprintf("s68k int3 timer read (%02x)", Pico_mcd->s68k_regs[31]);\r |
216 | return Pico_mcd->s68k_regs[31];\r |
cc68a136 |
217 | case 0x34: // fader\r |
7a1f6e45 |
218 | return 0; // no busy bit\r |
913ef4b7 |
219 | case 0x50: // font data (check: Lunar 2, Silpheed)\r |
220 | READ_FONT_DATA(0x00100000);\r |
7a1f6e45 |
221 | return d;\r |
913ef4b7 |
222 | case 0x52:\r |
223 | READ_FONT_DATA(0x00010000);\r |
7a1f6e45 |
224 | return d;\r |
913ef4b7 |
225 | case 0x54:\r |
226 | READ_FONT_DATA(0x10000000);\r |
7a1f6e45 |
227 | return d;\r |
913ef4b7 |
228 | case 0x56:\r |
229 | READ_FONT_DATA(0x01000000);\r |
7a1f6e45 |
230 | return d;\r |
cc68a136 |
231 | }\r |
232 | \r |
233 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
234 | \r |
7a1f6e45 |
235 | if (a >= 0x0e && a < 0x30) goto poll_detect;\r |
cc68a136 |
236 | \r |
7a1f6e45 |
237 | return d;\r |
cc68a136 |
238 | \r |
7a1f6e45 |
239 | poll_detect:\r |
240 | #ifdef USE_POLL_DETECT\r |
241 | // polling detection\r |
242 | if (a == (s68k_poll_adclk&0xfe)) {\r |
243 | unsigned int clkdiff = SekCyclesDoneS68k() - (s68k_poll_adclk>>8);\r |
244 | if (clkdiff <= POLL_CYCLES) {\r |
245 | s68k_poll_cnt++;\r |
246 | //printf("-- diff: %u, cnt = %i\n", clkdiff, s68k_poll_cnt);\r |
247 | if (s68k_poll_cnt > POLL_LIMIT) {\r |
248 | SekSetStopS68k(1);\r |
249 | //printf("%05i:%03i: s68k poll detected @ %06x, a=%02x\n", Pico.m.frame_count, Pico.m.scanline, SekPcS68k, a);\r |
250 | }\r |
251 | s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a;\r |
252 | return d;\r |
253 | }\r |
254 | }\r |
255 | s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a;\r |
256 | s68k_poll_cnt = 0;\r |
257 | \r |
258 | #endif\r |
cc68a136 |
259 | return d;\r |
260 | }\r |
261 | \r |
4ff2d527 |
262 | #ifndef _ASM_CD_MEMORY_C\r |
263 | static\r |
264 | #endif\r |
265 | void s68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
266 | {\r |
672ad671 |
267 | //dprintf("s68k_regs w%2i: [%02x] %02x @ %06x", realsize, a, d, SekPcS68k);\r |
cc68a136 |
268 | \r |
269 | // TODO: review against Gens\r |
48e8482f |
270 | // Warning: d might have upper bits set\r |
cc68a136 |
271 | switch (a) {\r |
672ad671 |
272 | case 2:\r |
273 | return; // only m68k can change WP\r |
fa1e5e29 |
274 | case 3: {\r |
275 | int dold = Pico_mcd->s68k_regs[3];\r |
bf098bc5 |
276 | dprintf("s68k_regs w3: %02x @%06x", (u8)d, SekPc);\r |
672ad671 |
277 | d &= 0x1d;\r |
4ff2d527 |
278 | d |= dold&0xc2;\r |
d0d47c5b |
279 | if (d&4) {\r |
4ff2d527 |
280 | if ((d ^ dold) & 5) {\r |
281 | d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit\r |
282 | #ifdef _ASM_CD_MEMORY_C\r |
283 | PicoMemResetCD(d);\r |
284 | #endif\r |
285 | }\r |
48e8482f |
286 | #ifdef _ASM_CD_MEMORY_C\r |
287 | if ((d ^ dold) & 0x1d)\r |
288 | PicoMemResetCDdecode(d);\r |
289 | #endif\r |
fa1e5e29 |
290 | if (!(dold & 4)) {\r |
291 | dprintf("wram mode 2M->1M");\r |
292 | wram_2M_to_1M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
293 | }\r |
d0d47c5b |
294 | } else {\r |
fa1e5e29 |
295 | if (dold & 4) {\r |
296 | dprintf("wram mode 1M->2M");\r |
4ff2d527 |
297 | if (!(d&1)) { // it didn't set the ret bit, which means it doesn't want to give WRAM to m68k\r |
298 | d &= ~3;\r |
299 | d |= (dold&1) ? 2 : 1; // then give it to the one which had bank0 in 1M mode\r |
300 | }\r |
fa1e5e29 |
301 | wram_1M_to_2M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
302 | #ifdef _ASM_CD_MEMORY_C\r |
303 | PicoMemResetCD(d);\r |
304 | #endif\r |
305 | }\r |
306 | else\r |
307 | d |= dold&1;\r |
308 | if (d&1) d &= ~2; // return word RAM to m68k in 2M mode\r |
d0d47c5b |
309 | }\r |
672ad671 |
310 | break;\r |
fa1e5e29 |
311 | }\r |
cc68a136 |
312 | case 4:\r |
313 | dprintf("s68k CDC dest: %x", d&7);\r |
314 | Pico_mcd->s68k_regs[4] = (Pico_mcd->s68k_regs[4]&0xC0) | (d&7); // CDC mode\r |
315 | return;\r |
316 | case 5:\r |
c459aefd |
317 | //dprintf("s68k CDC reg addr: %x", d&0xf);\r |
cc68a136 |
318 | break;\r |
319 | case 7:\r |
320 | CDC_Write_Reg(d);\r |
321 | return;\r |
322 | case 0xa:\r |
323 | dprintf("s68k set CDC dma addr");\r |
324 | break;\r |
d1df8786 |
325 | case 0xc:\r |
4f265db7 |
326 | case 0xd:\r |
d1df8786 |
327 | dprintf("s68k set stopwatch timer");\r |
4f265db7 |
328 | Pico_mcd->m.timer_stopwatch = 0;\r |
329 | return;\r |
1cd356a3 |
330 | case 0xe:\r |
7a1f6e45 |
331 | Pico_mcd->s68k_regs[0xf] = (d>>1) | (d<<7); // ror8 1, Gens note: Dragons lair\r |
1cd356a3 |
332 | return;\r |
d1df8786 |
333 | case 0x31:\r |
4f265db7 |
334 | dprintf("s68k set int3 timer: %02x", d);\r |
48e8482f |
335 | Pico_mcd->m.timer_int3 = (d & 0xff) << 16;\r |
d1df8786 |
336 | break;\r |
cc68a136 |
337 | case 0x33: // IRQ mask\r |
338 | dprintf("s68k irq mask: %02x", d);\r |
339 | if ((d&(1<<4)) && (Pico_mcd->s68k_regs[0x37]&4) && !(Pico_mcd->s68k_regs[0x33]&(1<<4))) {\r |
340 | CDD_Export_Status();\r |
cc68a136 |
341 | }\r |
342 | break;\r |
343 | case 0x34: // fader\r |
344 | Pico_mcd->s68k_regs[a] = (u8) d & 0x7f;\r |
345 | return;\r |
672ad671 |
346 | case 0x36:\r |
347 | return; // d/m bit is unsetable\r |
348 | case 0x37: {\r |
349 | u32 d_old = Pico_mcd->s68k_regs[0x37];\r |
350 | Pico_mcd->s68k_regs[0x37] = d&7;\r |
351 | if ((d&4) && !(d_old&4)) {\r |
cc68a136 |
352 | CDD_Export_Status();\r |
cc68a136 |
353 | }\r |
672ad671 |
354 | return;\r |
355 | }\r |
cc68a136 |
356 | case 0x4b:\r |
357 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
358 | CDD_Import_Command();\r |
359 | return;\r |
360 | }\r |
361 | \r |
1cd356a3 |
362 | if ((a&0x1f0) == 0x10 || (a >= 0x38 && a < 0x42))\r |
cc68a136 |
363 | {\r |
fa1e5e29 |
364 | dprintf("s68k FIXME: invalid write @ %02x?", a);\r |
cc68a136 |
365 | return;\r |
366 | }\r |
367 | \r |
368 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
369 | }\r |
370 | \r |
371 | \r |
4ff2d527 |
372 | #ifndef _ASM_CD_MEMORY_C\r |
fa1e5e29 |
373 | static u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
374 | {\r |
375 | u32 d=0;\r |
376 | \r |
672ad671 |
377 | if ((a&0xffffc0)==0xa12000) {\r |
cb4a513a |
378 | d=m68k_reg_read16(a);\r |
672ad671 |
379 | goto end;\r |
380 | }\r |
cc68a136 |
381 | \r |
fa1e5e29 |
382 | dprintf("m68k FIXME: unusual r%i: %06x @%06x", realsize&~1, (a&0xfffffe)+(realsize&1), SekPc);\r |
cc68a136 |
383 | \r |
384 | end:\r |
385 | return d;\r |
386 | }\r |
387 | \r |
cc68a136 |
388 | \r |
fa1e5e29 |
389 | static void OtherWrite8End(u32 a, u32 d, int realsize)\r |
cc68a136 |
390 | {\r |
cb4a513a |
391 | if ((a&0xffffc0)==0xa12000) { m68k_reg_write8(a, d); return; }\r |
cc68a136 |
392 | \r |
fa1e5e29 |
393 | dprintf("m68k FIXME: strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
394 | }\r |
395 | \r |
cc68a136 |
396 | \r |
fa1e5e29 |
397 | #undef _ASM_MEMORY_C\r |
398 | #include "../MemoryCmn.c"\r |
4ff2d527 |
399 | #include "cell_map.c"\r |
400 | #endif // !def _ASM_CD_MEMORY_C\r |
cc68a136 |
401 | \r |
402 | // -----------------------------------------------------------------\r |
403 | // Read Rom and read Ram\r |
404 | \r |
4ff2d527 |
405 | //u8 PicoReadM68k8_(u32 a);\r |
406 | #ifdef _ASM_CD_MEMORY_C\r |
407 | u8 PicoReadM68k8(u32 a);\r |
408 | #else\r |
409 | static u8 PicoReadM68k8(u32 a)\r |
cc68a136 |
410 | {\r |
411 | u32 d=0;\r |
412 | \r |
413 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
414 | \r |
415 | a&=0xffffff;\r |
416 | \r |
417 | if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios\r |
418 | \r |
419 | // prg RAM\r |
4ff2d527 |
420 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
421 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
422 | d = *(prg_bank+((a^1)&0x1ffff));\r |
423 | goto end;\r |
424 | }\r |
425 | \r |
d0d47c5b |
426 | // word RAM\r |
427 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
428 | wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
429 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
430 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
431 | if (a >= 0x220000)\r |
432 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
433 | else a &= 0x1ffff;\r |
434 | d = Pico_mcd->word_ram1M[bank][a^1];\r |
d0d47c5b |
435 | } else {\r |
436 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
437 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
438 | }\r |
913ef4b7 |
439 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
440 | goto end;\r |
441 | }\r |
442 | \r |
cc68a136 |
443 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
444 | \r |
c459aefd |
445 | if ((a&0xffffc0)==0xa12000)\r |
446 | rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
447 | \r |
cc68a136 |
448 | d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r |
449 | \r |
c459aefd |
450 | if ((a&0xffffc0)==0xa12000)\r |
451 | rdprintf("ret = %02x", (u8)d);\r |
672ad671 |
452 | \r |
cc68a136 |
453 | end:\r |
454 | \r |
455 | #ifdef __debug_io\r |
456 | dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
457 | #endif\r |
458 | return (u8)d;\r |
459 | }\r |
4ff2d527 |
460 | #endif\r |
cc68a136 |
461 | \r |
ab0607f7 |
462 | \r |
4ff2d527 |
463 | #ifdef _ASM_CD_MEMORY_C\r |
464 | u16 PicoReadM68k16(u32 a);\r |
465 | #else\r |
466 | static u16 PicoReadM68k16(u32 a)\r |
cc68a136 |
467 | {\r |
468 | u16 d=0;\r |
469 | \r |
470 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
471 | \r |
472 | a&=0xfffffe;\r |
473 | \r |
474 | if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios\r |
475 | \r |
476 | // prg RAM\r |
4ff2d527 |
477 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
478 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
479 | d = *(u16 *)(prg_bank+(a&0x1fffe));\r |
480 | goto end;\r |
481 | }\r |
482 | \r |
d0d47c5b |
483 | // word RAM\r |
484 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
485 | wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
486 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
487 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
488 | if (a >= 0x220000)\r |
489 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
490 | else a &= 0x1fffe;\r |
491 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
d0d47c5b |
492 | } else {\r |
493 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
494 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
495 | }\r |
913ef4b7 |
496 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
497 | goto end;\r |
498 | }\r |
499 | \r |
c459aefd |
500 | if ((a&0xffffc0)==0xa12000)\r |
501 | rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
502 | \r |
cc68a136 |
503 | d = (u16)OtherRead16(a, 16);\r |
504 | \r |
c459aefd |
505 | if ((a&0xffffc0)==0xa12000)\r |
506 | rdprintf("ret = %04x", d);\r |
672ad671 |
507 | \r |
cc68a136 |
508 | end:\r |
509 | \r |
510 | #ifdef __debug_io\r |
511 | dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
512 | #endif\r |
513 | return d;\r |
514 | }\r |
4ff2d527 |
515 | #endif\r |
cc68a136 |
516 | \r |
ab0607f7 |
517 | \r |
4ff2d527 |
518 | #ifdef _ASM_CD_MEMORY_C\r |
519 | u32 PicoReadM68k32(u32 a);\r |
520 | #else\r |
521 | static u32 PicoReadM68k32(u32 a)\r |
cc68a136 |
522 | {\r |
523 | u32 d=0;\r |
524 | \r |
525 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
526 | \r |
527 | a&=0xfffffe;\r |
528 | \r |
529 | if (a < 0x20000) { u16 *pm=(u16 *)(Pico_mcd->bios+a); d = (pm[0]<<16)|pm[1]; goto end; } // bios\r |
530 | \r |
531 | // prg RAM\r |
4ff2d527 |
532 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
533 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
534 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
535 | d = (pm[0]<<16)|pm[1];\r |
536 | goto end;\r |
537 | }\r |
538 | \r |
d0d47c5b |
539 | // word RAM\r |
540 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
541 | wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
542 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
543 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
544 | if (a >= 0x220000) { // cell arranged\r |
545 | u32 a1, a2;\r |
546 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
547 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
548 | else a2 = a1 + 2;\r |
549 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16;\r |
550 | d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2);\r |
bf098bc5 |
551 | } else {\r |
fa1e5e29 |
552 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
bf098bc5 |
553 | }\r |
d0d47c5b |
554 | } else {\r |
555 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
556 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
557 | }\r |
913ef4b7 |
558 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
559 | goto end;\r |
560 | }\r |
561 | \r |
c459aefd |
562 | if ((a&0xffffc0)==0xa12000)\r |
563 | rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
564 | \r |
cc68a136 |
565 | d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
566 | \r |
c459aefd |
567 | if ((a&0xffffc0)==0xa12000)\r |
568 | rdprintf("ret = %08x", d);\r |
672ad671 |
569 | \r |
cc68a136 |
570 | end:\r |
571 | #ifdef __debug_io\r |
572 | dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
573 | #endif\r |
574 | return d;\r |
575 | }\r |
4ff2d527 |
576 | #endif\r |
cc68a136 |
577 | \r |
ab0607f7 |
578 | \r |
cc68a136 |
579 | // -----------------------------------------------------------------\r |
580 | // Write Ram\r |
581 | \r |
4ff2d527 |
582 | #ifdef _ASM_CD_MEMORY_C\r |
583 | void PicoWriteM68k8(u32 a,u8 d);\r |
584 | #else\r |
585 | static void PicoWriteM68k8(u32 a,u8 d)\r |
cc68a136 |
586 | {\r |
587 | #ifdef __debug_io\r |
588 | dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
589 | #endif\r |
590 | //if ((a&0xe0ffff)==0xe0a9ba+0x69c)\r |
591 | // dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
592 | \r |
593 | \r |
ab0607f7 |
594 | if ((a&0xe00000)==0xe00000) { // Ram\r |
595 | *(u8 *)(Pico.ram+((a^1)&0xffff)) = d;\r |
596 | return;\r |
597 | }\r |
cc68a136 |
598 | \r |
599 | a&=0xffffff;\r |
600 | \r |
601 | // prg RAM\r |
4ff2d527 |
602 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
603 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
bf098bc5 |
604 | *(u8 *)(prg_bank+((a^1)&0x1ffff))=d;\r |
cc68a136 |
605 | return;\r |
606 | }\r |
607 | \r |
d0d47c5b |
608 | // word RAM\r |
609 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
610 | wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc);\r |
d0d47c5b |
611 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
612 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
613 | if (a >= 0x220000)\r |
614 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
615 | else a &= 0x1ffff;\r |
616 | *(u8 *)(Pico_mcd->word_ram1M[bank]+(a^1))=d;\r |
d0d47c5b |
617 | } else {\r |
618 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
619 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
620 | }\r |
621 | return;\r |
622 | }\r |
623 | \r |
c459aefd |
624 | if ((a&0xffffc0)==0xa12000)\r |
625 | rdprintf("m68k_regs w8: [%02x] %02x @%06x", a&0x3f, d, SekPc);\r |
672ad671 |
626 | \r |
cc68a136 |
627 | OtherWrite8(a,d,8);\r |
628 | }\r |
4ff2d527 |
629 | #endif\r |
cc68a136 |
630 | \r |
ab0607f7 |
631 | \r |
4ff2d527 |
632 | #ifdef _ASM_CD_MEMORY_C\r |
633 | void PicoWriteM68k16(u32 a,u16 d);\r |
634 | #else\r |
635 | static void PicoWriteM68k16(u32 a,u16 d)\r |
cc68a136 |
636 | {\r |
637 | #ifdef __debug_io\r |
638 | dprintf("w16: %06x, %04x", a&0xffffff, d);\r |
639 | #endif\r |
cc68a136 |
640 | // dprintf("w16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
641 | \r |
ab0607f7 |
642 | if ((a&0xe00000)==0xe00000) { // Ram\r |
643 | *(u16 *)(Pico.ram+(a&0xfffe))=d;\r |
644 | return;\r |
645 | }\r |
cc68a136 |
646 | \r |
647 | a&=0xfffffe;\r |
648 | \r |
649 | // prg RAM\r |
4ff2d527 |
650 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
651 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
652 | *(u16 *)(prg_bank+(a&0x1fffe))=d;\r |
653 | return;\r |
654 | }\r |
655 | \r |
d0d47c5b |
656 | // word RAM\r |
657 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
658 | wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc);\r |
d0d47c5b |
659 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
660 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
661 | if (a >= 0x220000)\r |
662 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
663 | else a &= 0x1fffe;\r |
664 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a)=d;\r |
d0d47c5b |
665 | } else {\r |
666 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
667 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
668 | }\r |
669 | return;\r |
670 | }\r |
671 | \r |
7a1f6e45 |
672 | // regs\r |
673 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
674 | rdprintf("m68k_regs w16: [%02x] %04x @%06x", a&0x3f, d, SekPc);\r |
7a1f6e45 |
675 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
676 | Pico_mcd->s68k_regs[0xe] = d >> 8;\r |
677 | #ifdef USE_POLL_DETECT\r |
678 | if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) {\r |
679 | SekSetStopS68k(0); s68k_poll_adclk = -1;\r |
680 | //printf("%05i:%03i: s68k poll release, a=%02x\n", Pico.m.frame_count, Pico.m.scanline, a);\r |
681 | }\r |
682 | #endif\r |
683 | return;\r |
684 | }\r |
685 | m68k_reg_write8(a, d>>8);\r |
686 | m68k_reg_write8(a+1,d&0xff);\r |
687 | return;\r |
688 | }\r |
cc68a136 |
689 | \r |
690 | OtherWrite16(a,d);\r |
691 | }\r |
4ff2d527 |
692 | #endif\r |
cc68a136 |
693 | \r |
ab0607f7 |
694 | \r |
4ff2d527 |
695 | #ifdef _ASM_CD_MEMORY_C\r |
696 | void PicoWriteM68k32(u32 a,u32 d);\r |
697 | #else\r |
698 | static void PicoWriteM68k32(u32 a,u32 d)\r |
cc68a136 |
699 | {\r |
700 | #ifdef __debug_io\r |
701 | dprintf("w32: %06x, %08x", a&0xffffff, d);\r |
702 | #endif\r |
703 | \r |
704 | if ((a&0xe00000)==0xe00000)\r |
705 | {\r |
706 | // Ram:\r |
707 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
708 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
709 | return;\r |
710 | }\r |
711 | \r |
712 | a&=0xfffffe;\r |
713 | \r |
714 | // prg RAM\r |
4ff2d527 |
715 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
716 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
717 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
718 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
719 | return;\r |
720 | }\r |
721 | \r |
672ad671 |
722 | // word RAM\r |
d0d47c5b |
723 | if ((a&0xfc0000)==0x200000) {\r |
724 | if (d != 0) // don't log clears\r |
913ef4b7 |
725 | wrdprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc);\r |
d0d47c5b |
726 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
727 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
728 | if (a >= 0x220000) { // cell arranged\r |
729 | u32 a1, a2;\r |
730 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
731 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
732 | else a2 = a1 + 2;\r |
733 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16;\r |
734 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d;\r |
bf098bc5 |
735 | } else {\r |
fa1e5e29 |
736 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
737 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
bf098bc5 |
738 | }\r |
d0d47c5b |
739 | } else {\r |
740 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
741 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
742 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
743 | }\r |
672ad671 |
744 | return;\r |
d0d47c5b |
745 | }\r |
672ad671 |
746 | \r |
c459aefd |
747 | if ((a&0xffffc0)==0xa12000)\r |
748 | rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);\r |
cc68a136 |
749 | \r |
750 | OtherWrite16(a, (u16)(d>>16));\r |
751 | OtherWrite16(a+2,(u16)d);\r |
752 | }\r |
4ff2d527 |
753 | #endif\r |
cc68a136 |
754 | \r |
755 | \r |
756 | // -----------------------------------------------------------------\r |
757 | \r |
4ff2d527 |
758 | #ifdef _ASM_CD_MEMORY_C\r |
759 | u8 PicoReadS68k8(u32 a);\r |
760 | #else\r |
761 | static u8 PicoReadS68k8(u32 a)\r |
cc68a136 |
762 | {\r |
763 | u32 d=0;\r |
764 | \r |
765 | a&=0xffffff;\r |
766 | \r |
767 | // prg RAM\r |
768 | if (a < 0x80000) {\r |
769 | d = *(Pico_mcd->prg_ram+(a^1));\r |
770 | goto end;\r |
771 | }\r |
772 | \r |
773 | // regs\r |
774 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
775 | a &= 0x1ff;\r |
776 | rdprintf("s68k_regs r8: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
777 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
778 | d = gfx_cd_read(a&~1);\r |
779 | else d = s68k_reg_read16(a&~1);\r |
780 | if ((a&1)==0) d>>=8;\r |
c459aefd |
781 | rdprintf("ret = %02x", (u8)d);\r |
cc68a136 |
782 | goto end;\r |
783 | }\r |
784 | \r |
d0d47c5b |
785 | // word RAM (2M area)\r |
786 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
fa1e5e29 |
787 | // test: batman returns\r |
913ef4b7 |
788 | wrdprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
789 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
790 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
791 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
792 | if (a&1) d &= 0x0f;\r |
793 | else d >>= 4;\r |
794 | dprintf("FIXME: decode");\r |
d0d47c5b |
795 | } else {\r |
796 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
797 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
798 | }\r |
913ef4b7 |
799 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
800 | goto end;\r |
801 | }\r |
802 | \r |
803 | // word RAM (1M area)\r |
68cba51e |
804 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
805 | int bank;\r |
913ef4b7 |
806 | wrdprintf("s68k_wram1M r8: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
807 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
808 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
809 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
810 | d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff];\r |
913ef4b7 |
811 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
812 | goto end;\r |
813 | }\r |
814 | \r |
4f265db7 |
815 | // PCM\r |
816 | if ((a&0xff8000)==0xff0000) {\r |
1cd356a3 |
817 | dprintf("s68k_pcm r8: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
818 | a &= 0x7fff;\r |
819 | if (a >= 0x2000)\r |
820 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
821 | else if (a >= 0x20) {\r |
822 | a &= 0x1e;\r |
823 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
824 | if (a & 2) d >>= 8;\r |
825 | }\r |
826 | dprintf("ret = %02x", (u8)d);\r |
827 | goto end;\r |
828 | }\r |
829 | \r |
ab0607f7 |
830 | // bram\r |
831 | if ((a&0xff0000)==0xfe0000) {\r |
832 | d = Pico_mcd->bram[(a>>1)&0x1fff];\r |
833 | goto end;\r |
834 | }\r |
835 | \r |
cc68a136 |
836 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
837 | \r |
838 | end:\r |
839 | \r |
840 | #ifdef __debug_io2\r |
841 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
842 | #endif\r |
843 | return (u8)d;\r |
844 | }\r |
4ff2d527 |
845 | #endif\r |
cc68a136 |
846 | \r |
ab0607f7 |
847 | \r |
4ff2d527 |
848 | //u16 PicoReadS68k16_(u32 a);\r |
849 | #ifdef _ASM_CD_MEMORY_C\r |
850 | u16 PicoReadS68k16(u32 a);\r |
851 | #else\r |
852 | static u16 PicoReadS68k16(u32 a)\r |
cc68a136 |
853 | {\r |
4f265db7 |
854 | u32 d=0;\r |
cc68a136 |
855 | \r |
856 | a&=0xfffffe;\r |
857 | \r |
858 | // prg RAM\r |
859 | if (a < 0x80000) {\r |
860 | d = *(u16 *)(Pico_mcd->prg_ram+a);\r |
861 | goto end;\r |
862 | }\r |
863 | \r |
864 | // regs\r |
865 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
866 | a &= 0x1fe;\r |
867 | rdprintf("s68k_regs r16: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
868 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
869 | d = gfx_cd_read(a);\r |
870 | else d = s68k_reg_read16(a);\r |
c459aefd |
871 | rdprintf("ret = %04x", d);\r |
cc68a136 |
872 | goto end;\r |
873 | }\r |
874 | \r |
d0d47c5b |
875 | // word RAM (2M area)\r |
876 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
877 | wrdprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
878 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
879 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
880 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
881 | d |= d << 4; d &= ~0xf0;\r |
882 | dprintf("FIXME: decode");\r |
d0d47c5b |
883 | } else {\r |
884 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
885 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
886 | }\r |
913ef4b7 |
887 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
888 | goto end;\r |
889 | }\r |
890 | \r |
891 | // word RAM (1M area)\r |
68cba51e |
892 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
893 | int bank;\r |
913ef4b7 |
894 | wrdprintf("s68k_wram1M r16: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
895 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
896 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
897 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
898 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
913ef4b7 |
899 | wrdprintf("ret = %04x", d);\r |
ab0607f7 |
900 | goto end;\r |
901 | }\r |
902 | \r |
903 | // bram\r |
904 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
905 | dprintf("FIXME: s68k_bram r16: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
906 | a = (a>>1)&0x1fff;\r |
4f265db7 |
907 | d = Pico_mcd->bram[a++]; // Gens does little endian here, and so do we..\r |
4ff2d527 |
908 | d|= Pico_mcd->bram[a++] << 8; // This is most likely wrong\r |
ab0607f7 |
909 | dprintf("ret = %04x", d);\r |
d0d47c5b |
910 | goto end;\r |
911 | }\r |
912 | \r |
4f265db7 |
913 | // PCM\r |
914 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
915 | dprintf("FIXME: s68k_pcm r16: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
916 | a &= 0x7fff;\r |
917 | if (a >= 0x2000)\r |
918 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
919 | else if (a >= 0x20) {\r |
920 | a &= 0x1e;\r |
921 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
922 | if (a & 2) d >>= 8;\r |
923 | }\r |
924 | dprintf("ret = %04x", d);\r |
925 | goto end;\r |
926 | }\r |
927 | \r |
cc68a136 |
928 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
929 | \r |
930 | end:\r |
931 | \r |
932 | #ifdef __debug_io2\r |
933 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
934 | #endif\r |
935 | return d;\r |
936 | }\r |
4ff2d527 |
937 | #endif\r |
cc68a136 |
938 | \r |
ab0607f7 |
939 | \r |
4ff2d527 |
940 | #ifdef _ASM_CD_MEMORY_C\r |
941 | u32 PicoReadS68k32(u32 a);\r |
942 | #else\r |
943 | static u32 PicoReadS68k32(u32 a)\r |
cc68a136 |
944 | {\r |
945 | u32 d=0;\r |
946 | \r |
947 | a&=0xfffffe;\r |
948 | \r |
949 | // prg RAM\r |
950 | if (a < 0x80000) {\r |
951 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
952 | d = (pm[0]<<16)|pm[1];\r |
953 | goto end;\r |
954 | }\r |
955 | \r |
956 | // regs\r |
957 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
958 | a &= 0x1fe;\r |
959 | rdprintf("s68k_regs r32: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
960 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
961 | d = (gfx_cd_read(a)<<16)|gfx_cd_read(a+2);\r |
962 | else d = (s68k_reg_read16(a)<<16)|s68k_reg_read16(a+2);\r |
c459aefd |
963 | rdprintf("ret = %08x", d);\r |
cc68a136 |
964 | goto end;\r |
965 | }\r |
966 | \r |
d0d47c5b |
967 | // word RAM (2M area)\r |
968 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
969 | wrdprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
970 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
971 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
972 | a >>= 1;\r |
973 | d = Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] << 16;\r |
974 | d |= Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff];\r |
975 | d |= d << 4; d &= 0x0f0f0f0f;\r |
976 | dprintf("FIXME: decode");\r |
d0d47c5b |
977 | } else {\r |
978 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
979 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
980 | }\r |
913ef4b7 |
981 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
982 | goto end;\r |
983 | }\r |
984 | \r |
985 | // word RAM (1M area)\r |
68cba51e |
986 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
987 | int bank;\r |
913ef4b7 |
988 | wrdprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
989 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
990 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
991 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
992 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
913ef4b7 |
993 | wrdprintf("ret = %08x", d);\r |
ab0607f7 |
994 | goto end;\r |
995 | }\r |
996 | \r |
4f265db7 |
997 | // PCM\r |
998 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
999 | dprintf("FIXME: s68k_pcm r32: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
1000 | a &= 0x7fff;\r |
1001 | if (a >= 0x2000) {\r |
1002 | a >>= 1;\r |
1003 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] << 16;\r |
1004 | d |= Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff];\r |
1005 | } else if (a >= 0x20) {\r |
1006 | a &= 0x1e;\r |
1007 | if (a & 2) {\r |
1008 | a >>= 2;\r |
1009 | d = (Pico_mcd->pcm.ch[a].addr >> (PCM_STEP_SHIFT-8)) & 0xff0000;\r |
1010 | d |= (Pico_mcd->pcm.ch[(a+1)&7].addr >> PCM_STEP_SHIFT) & 0xff;\r |
1011 | } else {\r |
1012 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
1013 | d = ((d<<16)&0xff0000) | ((d>>8)&0xff); // PCM chip is LE\r |
1014 | }\r |
1015 | }\r |
1016 | dprintf("ret = %08x", d);\r |
1017 | goto end;\r |
1018 | }\r |
1019 | \r |
ab0607f7 |
1020 | // bram\r |
1021 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
1022 | dprintf("FIXME: s68k_bram r32: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
1023 | a = (a>>1)&0x1fff;\r |
1024 | d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion..\r |
1025 | d|= Pico_mcd->bram[a++] << 24;\r |
1026 | d|= Pico_mcd->bram[a++];\r |
1027 | d|= Pico_mcd->bram[a++] << 8;\r |
1028 | dprintf("ret = %08x", d);\r |
d0d47c5b |
1029 | goto end;\r |
1030 | }\r |
1031 | \r |
cc68a136 |
1032 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1033 | \r |
1034 | end:\r |
1035 | \r |
1036 | #ifdef __debug_io2\r |
1037 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1038 | #endif\r |
1039 | return d;\r |
1040 | }\r |
4ff2d527 |
1041 | #endif\r |
cc68a136 |
1042 | \r |
ab0607f7 |
1043 | \r |
a4030801 |
1044 | #ifndef _ASM_CD_MEMORY_C\r |
0a051f55 |
1045 | /* check: jaguar xj 220 (draws entire world using decode) */\r |
1046 | static void decode_write8(u32 a, u8 d, int r3)\r |
1047 | {\r |
1048 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
1049 | u8 oldmask = (a&1) ? 0xf0 : 0x0f;\r |
1050 | \r |
0a051f55 |
1051 | r3 &= 0x18;\r |
1052 | d &= 0x0f;\r |
1053 | if (!(a&1)) d <<= 4;\r |
1054 | \r |
1055 | //dprintf("FIXME: decode, r3 = %02x", r3);\r |
1056 | \r |
1057 | if (r3 == 8) {\r |
1058 | if ((!(*pd & (~oldmask))) && d) goto do_it;\r |
1059 | } else if (r3 > 8) {\r |
1060 | if (d) goto do_it;\r |
1061 | } else {\r |
1062 | goto do_it;\r |
1063 | }\r |
1064 | \r |
1065 | return;\r |
1066 | do_it:\r |
1067 | *pd = d | (*pd & oldmask);\r |
1068 | }\r |
1069 | \r |
1070 | \r |
1071 | static void decode_write16(u32 a, u16 d, int r3)\r |
1072 | {\r |
1073 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
1074 | \r |
1075 | //if ((a & 0x3ffff) < 0x28000) return;\r |
1076 | \r |
1077 | r3 &= 0x18;\r |
1078 | d &= 0x0f0f;\r |
1079 | d |= d >> 4;\r |
1080 | \r |
1081 | if (r3 == 8) {\r |
1082 | u8 dold = *pd;\r |
1083 | if (!(dold & 0xf0)) dold |= d & 0xf0;\r |
1084 | if (!(dold & 0x0f)) dold |= d & 0x0f;\r |
1085 | *pd = dold;\r |
1086 | } else if (r3 > 8) {\r |
1087 | u8 dold = *pd;\r |
1088 | if (!(d & 0xf0)) d |= dold & 0xf0;\r |
1089 | if (!(d & 0x0f)) d |= dold & 0x0f;\r |
1090 | *pd = d;\r |
1091 | } else {\r |
1092 | *pd = d;\r |
1093 | }\r |
1094 | \r |
1095 | //dprintf("FIXME: decode");\r |
1096 | }\r |
a4030801 |
1097 | #endif\r |
0a051f55 |
1098 | \r |
cc68a136 |
1099 | // -----------------------------------------------------------------\r |
1100 | \r |
48e8482f |
1101 | //void PicoWriteS68k8_(u32 a,u8 d);\r |
1102 | //void PicoWriteS68k8__(u32 a,u8 d);\r |
4ff2d527 |
1103 | #ifdef _ASM_CD_MEMORY_C\r |
1104 | void PicoWriteS68k8(u32 a,u8 d);\r |
1105 | #else\r |
1106 | static void PicoWriteS68k8(u32 a,u8 d)\r |
cc68a136 |
1107 | {\r |
1108 | #ifdef __debug_io2\r |
1109 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1110 | #endif\r |
1111 | \r |
1112 | a&=0xffffff;\r |
48e8482f |
1113 | #if 0\r |
1114 | PicoWriteS68k8_(a, d);\r |
1115 | /* if ((a&0xfc0000)!=0x080000) {\r |
1116 | PicoWriteS68k8_(a, d);\r |
1117 | return;\r |
1118 | }\r |
1119 | printf("r3: %02x\n", Pico_mcd->s68k_regs[3]);\r |
1120 | PicoWriteS68k8__(a,d);*/\r |
1121 | return;\r |
1122 | #endif\r |
cc68a136 |
1123 | \r |
1124 | // prg RAM\r |
1125 | if (a < 0x80000) {\r |
1126 | u8 *pm=(u8 *)(Pico_mcd->prg_ram+(a^1));\r |
1127 | *pm=d;\r |
1128 | return;\r |
1129 | }\r |
1130 | \r |
1131 | // regs\r |
1132 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1133 | a &= 0x1ff;\r |
1134 | rdprintf("s68k_regs w8: [%02x] %02x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1135 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1136 | gfx_cd_write16(a&~1, (d<<8)|d);\r |
cb4a513a |
1137 | else s68k_reg_write8(a,d);\r |
cc68a136 |
1138 | return;\r |
1139 | }\r |
1140 | \r |
d0d47c5b |
1141 | // word RAM (2M area)\r |
1142 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1143 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1144 | wrdprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1145 | if (r3 & 4) { // 1M decode mode?\r |
1146 | decode_write8(a, d, r3);\r |
d0d47c5b |
1147 | } else {\r |
1148 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1149 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
1150 | }\r |
1151 | return;\r |
1152 | }\r |
1153 | \r |
1154 | // word RAM (1M area)\r |
68cba51e |
1155 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
1156 | // Wing Commander tries to write here in wrong mode\r |
fa1e5e29 |
1157 | int bank;\r |
d0d47c5b |
1158 | if (d)\r |
913ef4b7 |
1159 | wrdprintf("s68k_wram1M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1160 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1161 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1162 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1163 | *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d;\r |
d0d47c5b |
1164 | return;\r |
1165 | }\r |
1166 | \r |
4f265db7 |
1167 | // PCM\r |
1168 | if ((a&0xff8000)==0xff0000) {\r |
1169 | a &= 0x7fff;\r |
1170 | if (a >= 0x2000)\r |
1171 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1172 | else if (a < 0x12)\r |
1173 | pcm_write(a>>1, d);\r |
1174 | return;\r |
1175 | }\r |
1176 | \r |
ab0607f7 |
1177 | // bram\r |
1178 | if ((a&0xff0000)==0xfe0000) {\r |
1179 | Pico_mcd->bram[(a>>1)&0x1fff] = d;\r |
1180 | SRam.changed = 1;\r |
1181 | return;\r |
1182 | }\r |
1183 | \r |
cc68a136 |
1184 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1185 | }\r |
4ff2d527 |
1186 | #endif\r |
cc68a136 |
1187 | \r |
ab0607f7 |
1188 | \r |
4ff2d527 |
1189 | #ifdef _ASM_CD_MEMORY_C\r |
1190 | void PicoWriteS68k16(u32 a,u16 d);\r |
1191 | #else\r |
1192 | static void PicoWriteS68k16(u32 a,u16 d)\r |
cc68a136 |
1193 | {\r |
1194 | #ifdef __debug_io2\r |
1195 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1196 | #endif\r |
1197 | \r |
1198 | a&=0xfffffe;\r |
1199 | \r |
1200 | // prg RAM\r |
1201 | if (a < 0x80000) {\r |
1202 | *(u16 *)(Pico_mcd->prg_ram+a)=d;\r |
1203 | return;\r |
1204 | }\r |
1205 | \r |
1206 | // regs\r |
1207 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1208 | a &= 0x1fe;\r |
1209 | rdprintf("s68k_regs w16: [%02x] %04x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1210 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1211 | gfx_cd_write16(a, d);\r |
cb4a513a |
1212 | else {\r |
1cd356a3 |
1213 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
1214 | Pico_mcd->s68k_regs[0xf] = d;\r |
4ff2d527 |
1215 | return;\r |
1cd356a3 |
1216 | }\r |
cb4a513a |
1217 | s68k_reg_write8(a, d>>8);\r |
1218 | s68k_reg_write8(a+1,d&0xff);\r |
1219 | }\r |
cc68a136 |
1220 | return;\r |
1221 | }\r |
1222 | \r |
d0d47c5b |
1223 | // word RAM (2M area)\r |
1224 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1225 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1226 | wrdprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1227 | if (r3 & 4) { // 1M decode mode?\r |
1228 | decode_write16(a, d, r3);\r |
d0d47c5b |
1229 | } else {\r |
1230 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1231 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
1232 | }\r |
1233 | return;\r |
1234 | }\r |
1235 | \r |
1236 | // word RAM (1M area)\r |
68cba51e |
1237 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1238 | int bank;\r |
d0d47c5b |
1239 | if (d)\r |
913ef4b7 |
1240 | wrdprintf("s68k_wram1M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1241 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1242 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1243 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1244 | *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d;\r |
d0d47c5b |
1245 | return;\r |
1246 | }\r |
1247 | \r |
4f265db7 |
1248 | // PCM\r |
1249 | if ((a&0xff8000)==0xff0000) {\r |
1250 | a &= 0x7fff;\r |
1251 | if (a >= 0x2000)\r |
1252 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1253 | else if (a < 0x12)\r |
1254 | pcm_write(a>>1, d & 0xff);\r |
1255 | return;\r |
1256 | }\r |
1257 | \r |
ab0607f7 |
1258 | // bram\r |
1259 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1260 | dprintf("s68k_bram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1261 | a = (a>>1)&0x1fff;\r |
1262 | Pico_mcd->bram[a++] = d; // Gens does little endian here, an so do we..\r |
1263 | Pico_mcd->bram[a++] = d >> 8;\r |
1264 | SRam.changed = 1;\r |
1265 | return;\r |
1266 | }\r |
1267 | \r |
cc68a136 |
1268 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1269 | }\r |
4ff2d527 |
1270 | #endif\r |
cc68a136 |
1271 | \r |
ab0607f7 |
1272 | \r |
4ff2d527 |
1273 | #ifdef _ASM_CD_MEMORY_C\r |
1274 | void PicoWriteS68k32(u32 a,u32 d);\r |
1275 | #else\r |
1276 | static void PicoWriteS68k32(u32 a,u32 d)\r |
cc68a136 |
1277 | {\r |
1278 | #ifdef __debug_io2\r |
1279 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1280 | #endif\r |
1281 | \r |
1282 | a&=0xfffffe;\r |
1283 | \r |
1284 | // prg RAM\r |
1285 | if (a < 0x80000) {\r |
1286 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
1287 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1288 | return;\r |
1289 | }\r |
1290 | \r |
1291 | // regs\r |
1292 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1293 | a &= 0x1fe;\r |
1294 | rdprintf("s68k_regs w32: [%02x] %08x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1295 | if (a >= 0x58 && a < 0x68) {\r |
48e8482f |
1296 | gfx_cd_write16(a, d>>16);\r |
1297 | gfx_cd_write16(a+2, d&0xffff);\r |
cb4a513a |
1298 | } else {\r |
1299 | s68k_reg_write8(a, d>>24);\r |
1300 | s68k_reg_write8(a+1,(d>>16)&0xff);\r |
1301 | s68k_reg_write8(a+2,(d>>8) &0xff);\r |
1302 | s68k_reg_write8(a+3, d &0xff);\r |
1303 | }\r |
cc68a136 |
1304 | return;\r |
1305 | }\r |
1306 | \r |
d0d47c5b |
1307 | // word RAM (2M area)\r |
1308 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1309 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1310 | wrdprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1311 | if (r3 & 4) { // 1M decode mode?\r |
1312 | decode_write16(a , d >> 16, r3);\r |
1313 | decode_write16(a+2, d , r3);\r |
d0d47c5b |
1314 | } else {\r |
1315 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1316 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
1317 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1318 | }\r |
1319 | return;\r |
1320 | }\r |
1321 | \r |
1322 | // word RAM (1M area)\r |
68cba51e |
1323 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1324 | int bank;\r |
1325 | u16 *pm;\r |
d0d47c5b |
1326 | if (d)\r |
913ef4b7 |
1327 | wrdprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1328 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1329 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1330 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1331 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1332 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
d0d47c5b |
1333 | return;\r |
1334 | }\r |
ab0607f7 |
1335 | \r |
4f265db7 |
1336 | // PCM\r |
1337 | if ((a&0xff8000)==0xff0000) {\r |
1338 | a &= 0x7fff;\r |
1339 | if (a >= 0x2000) {\r |
1340 | a >>= 1;\r |
1341 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] = (d >> 16);\r |
1342 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff] = d;\r |
1343 | } else if (a < 0x12) {\r |
1344 | a >>= 1;\r |
1345 | pcm_write(a, (d>>16) & 0xff);\r |
1346 | pcm_write(a+1, d & 0xff);\r |
1347 | }\r |
1348 | return;\r |
1349 | }\r |
1350 | \r |
ab0607f7 |
1351 | // bram\r |
1352 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1353 | dprintf("s68k_bram w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1354 | a = (a>>1)&0x1fff;\r |
1355 | Pico_mcd->bram[a++] = d >> 16; // middle endian? verify?\r |
1356 | Pico_mcd->bram[a++] = d >> 24;\r |
1357 | Pico_mcd->bram[a++] = d;\r |
1358 | Pico_mcd->bram[a++] = d >> 8;\r |
1359 | SRam.changed = 1;\r |
1360 | return;\r |
1361 | }\r |
1362 | \r |
cc68a136 |
1363 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1364 | }\r |
4ff2d527 |
1365 | #endif\r |
cc68a136 |
1366 | \r |
1367 | \r |
1368 | // -----------------------------------------------------------------\r |
1369 | \r |
b837b69b |
1370 | \r |
1371 | #if defined(EMU_C68K)\r |
1372 | static __inline int PicoMemBaseM68k(u32 pc)\r |
1373 | {\r |
fa1e5e29 |
1374 | if ((pc&0xe00000)==0xe00000)\r |
1375 | return (int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r |
b837b69b |
1376 | \r |
1377 | if (pc < 0x20000)\r |
fa1e5e29 |
1378 | return (int)Pico_mcd->bios; // Program Counter in BIOS\r |
1379 | \r |
1380 | if ((pc&0xfc0000)==0x200000)\r |
b837b69b |
1381 | {\r |
fa1e5e29 |
1382 | if (!(Pico_mcd->s68k_regs[3]&4))\r |
1383 | return (int)Pico_mcd->word_ram2M - 0x200000; // Program Counter in Word Ram\r |
1384 | if (pc < 0x220000) {\r |
1385 | int bank = (Pico_mcd->s68k_regs[3]&1);\r |
1386 | return (int)Pico_mcd->word_ram1M[bank] - 0x200000;\r |
1387 | }\r |
b837b69b |
1388 | }\r |
1389 | \r |
fa1e5e29 |
1390 | // Error - Program Counter is invalid\r |
1391 | dprintf("m68k FIXME: unhandled jump to %06x", pc);\r |
1392 | \r |
1393 | return (int)Pico_mcd->bios;\r |
b837b69b |
1394 | }\r |
1395 | \r |
1396 | \r |
1397 | static u32 PicoCheckPcM68k(u32 pc)\r |
1398 | {\r |
1399 | pc-=PicoCpu.membase; // Get real pc\r |
1400 | pc&=0xfffffe;\r |
1401 | \r |
1402 | PicoCpu.membase=PicoMemBaseM68k(pc);\r |
1403 | \r |
1404 | return PicoCpu.membase+pc;\r |
1405 | }\r |
1406 | \r |
1407 | \r |
1408 | static __inline int PicoMemBaseS68k(u32 pc)\r |
1409 | {\r |
fa1e5e29 |
1410 | if (pc < 0x80000) // PRG RAM\r |
1411 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1412 | \r |
fa1e5e29 |
1413 | if ((pc&0xfc0000)==0x080000) // WORD RAM 2M area (assume we are in the right mode..)\r |
1414 | return (int)Pico_mcd->word_ram2M - 0x080000;\r |
1415 | \r |
1416 | if ((pc&0xfe0000)==0x0c0000) { // word RAM 1M area\r |
1417 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1418 | return (int)Pico_mcd->word_ram1M[bank] - 0x0c0000;\r |
b837b69b |
1419 | }\r |
1420 | \r |
fa1e5e29 |
1421 | // Error - Program Counter is invalid\r |
1422 | dprintf("s68k FIXME: unhandled jump to %06x", pc);\r |
1423 | \r |
1424 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1425 | }\r |
1426 | \r |
1427 | \r |
1428 | static u32 PicoCheckPcS68k(u32 pc)\r |
1429 | {\r |
1430 | pc-=PicoCpuS68k.membase; // Get real pc\r |
1431 | pc&=0xfffffe;\r |
1432 | \r |
1433 | PicoCpuS68k.membase=PicoMemBaseS68k(pc);\r |
1434 | \r |
1435 | return PicoCpuS68k.membase+pc;\r |
1436 | }\r |
1437 | #endif\r |
1438 | \r |
1439 | \r |
1440 | void PicoMemSetupCD()\r |
1441 | {\r |
1442 | dprintf("PicoMemSetupCD()");\r |
1443 | #ifdef EMU_C68K\r |
1444 | // Setup m68k memory callbacks:\r |
1445 | PicoCpu.checkpc=PicoCheckPcM68k;\r |
1446 | PicoCpu.fetch8 =PicoCpu.read8 =PicoReadM68k8;\r |
1447 | PicoCpu.fetch16=PicoCpu.read16=PicoReadM68k16;\r |
1448 | PicoCpu.fetch32=PicoCpu.read32=PicoReadM68k32;\r |
1449 | PicoCpu.write8 =PicoWriteM68k8;\r |
1450 | PicoCpu.write16=PicoWriteM68k16;\r |
1451 | PicoCpu.write32=PicoWriteM68k32;\r |
1452 | // s68k\r |
1453 | PicoCpuS68k.checkpc=PicoCheckPcS68k;\r |
1454 | PicoCpuS68k.fetch8 =PicoCpuS68k.read8 =PicoReadS68k8;\r |
1455 | PicoCpuS68k.fetch16=PicoCpuS68k.read16=PicoReadS68k16;\r |
1456 | PicoCpuS68k.fetch32=PicoCpuS68k.read32=PicoReadS68k32;\r |
1457 | PicoCpuS68k.write8 =PicoWriteS68k8;\r |
1458 | PicoCpuS68k.write16=PicoWriteS68k16;\r |
1459 | PicoCpuS68k.write32=PicoWriteS68k32;\r |
1460 | #endif\r |
7a1f6e45 |
1461 | // m68k_poll_addr = m68k_poll_cnt = 0;\r |
1462 | s68k_poll_adclk = s68k_poll_cnt = 0;\r |
b837b69b |
1463 | }\r |
1464 | \r |
1465 | \r |
cc68a136 |
1466 | #ifdef EMU_M68K\r |
1467 | unsigned char PicoReadCD8w (unsigned int a) {\r |
1468 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k8(a) : PicoReadM68k8(a);\r |
1469 | }\r |
1470 | unsigned short PicoReadCD16w(unsigned int a) {\r |
1471 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k16(a) : PicoReadM68k16(a);\r |
1472 | }\r |
1473 | unsigned int PicoReadCD32w(unsigned int a) {\r |
1474 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k32(a) : PicoReadM68k32(a);\r |
1475 | }\r |
1476 | void PicoWriteCD8w (unsigned int a, unsigned char d) {\r |
1477 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);\r |
1478 | }\r |
1479 | void PicoWriteCD16w(unsigned int a, unsigned short d) {\r |
1480 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);\r |
1481 | }\r |
1482 | void PicoWriteCD32w(unsigned int a, unsigned int d) {\r |
1483 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);\r |
1484 | }\r |
1485 | \r |
1486 | // these are allowed to access RAM\r |
1487 | unsigned int m68k_read_pcrelative_CD8 (unsigned int a) {\r |
1488 | a&=0xffffff;\r |
1489 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1490 | if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram\r |
fa1e5e29 |
1491 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1492 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1493 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1494 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1495 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1496 | }\r |
1497 | dprintf("s68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1498 | } else {\r |
cc68a136 |
1499 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
fa1e5e29 |
1500 | if(a<0x20000) return *(u8 *)(Pico.rom+(a^1)); // Bios\r |
1501 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1502 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1503 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1504 | else if (a < 0x220000) {\r |
1505 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1506 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1507 | }\r |
1508 | }\r |
1509 | dprintf("m68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1510 | }\r |
1511 | return 0;//(u8) lastread_d;\r |
1512 | }\r |
1513 | unsigned int m68k_read_pcrelative_CD16(unsigned int a) {\r |
1514 | a&=0xffffff;\r |
1515 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1516 | if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram\r |
fa1e5e29 |
1517 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1518 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1519 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1520 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1521 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1522 | }\r |
1523 | dprintf("s68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1524 | } else {\r |
cc68a136 |
1525 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
fa1e5e29 |
1526 | if(a<0x20000) return *(u16 *)(Pico.rom+(a&~1)); // Bios\r |
1527 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1528 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1529 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1530 | else if (a < 0x220000) {\r |
1531 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1532 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1533 | }\r |
1534 | }\r |
1535 | dprintf("m68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1536 | }\r |
b837b69b |
1537 | return 0;\r |
cc68a136 |
1538 | }\r |
1539 | unsigned int m68k_read_pcrelative_CD32(unsigned int a) {\r |
fa1e5e29 |
1540 | u16 *pm;\r |
cc68a136 |
1541 | a&=0xffffff;\r |
1542 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1543 | if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram\r |
fa1e5e29 |
1544 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1545 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1546 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1547 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1548 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1549 | return (pm[0]<<16)|pm[1];\r |
1550 | }\r |
1551 | dprintf("s68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1552 | } else {\r |
cc68a136 |
1553 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
fa1e5e29 |
1554 | if(a<0x20000) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
1555 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1556 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1557 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1558 | else if (a < 0x220000) {\r |
1559 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1560 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1561 | return (pm[0]<<16)|pm[1];\r |
1562 | }\r |
1563 | }\r |
1564 | dprintf("m68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1565 | }\r |
b837b69b |
1566 | return 0;\r |
cc68a136 |
1567 | }\r |
1568 | #endif // EMU_M68K\r |
1569 | \r |