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 |
7a1f6e45 |
37 | #define POLL_LIMIT 16\r |
38 | #define POLL_CYCLES 124\r |
39 | // int m68k_poll_addr, m68k_poll_cnt;\r |
40 | unsigned int s68k_poll_adclk, s68k_poll_cnt;\r |
cc68a136 |
41 | \r |
4ff2d527 |
42 | #ifndef _ASM_CD_MEMORY_C\r |
cb4a513a |
43 | static u32 m68k_reg_read16(u32 a)\r |
cc68a136 |
44 | {\r |
45 | u32 d=0;\r |
46 | a &= 0x3e;\r |
672ad671 |
47 | // dprintf("m68k_regs r%2i: [%02x] @%06x", realsize&~1, a+(realsize&1), SekPc);\r |
cc68a136 |
48 | \r |
49 | switch (a) {\r |
672ad671 |
50 | case 0:\r |
c459aefd |
51 | d = ((Pico_mcd->s68k_regs[0x33]<<13)&0x8000) | Pico_mcd->m.busreq; // here IFL2 is always 0, just like in Gens\r |
672ad671 |
52 | goto end;\r |
cc68a136 |
53 | case 2:\r |
672ad671 |
54 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0xc7);\r |
c008977e |
55 | // the DMNA delay must only be visible on s68k side (Lunar2, Silpheed)\r |
56 | if (Pico_mcd->m.state_flags&2) { d &= ~1; d |= 2; }\r |
57 | //printf("m68k_regs r3: %02x @%06x\n", (u8)d, SekPc);\r |
cc68a136 |
58 | goto end;\r |
c459aefd |
59 | case 4:\r |
60 | d = Pico_mcd->s68k_regs[4]<<8;\r |
61 | goto end;\r |
62 | case 6:\r |
913ef4b7 |
63 | d = *(u16 *)(Pico_mcd->bios + 0x72);\r |
c459aefd |
64 | goto end;\r |
cc68a136 |
65 | case 8:\r |
cc68a136 |
66 | d = Read_CDC_Host(0);\r |
67 | goto end;\r |
c459aefd |
68 | case 0xA:\r |
fa1e5e29 |
69 | dprintf("m68k FIXME: reserved read");\r |
c459aefd |
70 | goto end;\r |
cc68a136 |
71 | case 0xC:\r |
1cd356a3 |
72 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
73 | dprintf("m68k stopwatch timer read (%04x)", d);\r |
1cd356a3 |
74 | goto end;\r |
cc68a136 |
75 | }\r |
76 | \r |
cc68a136 |
77 | if (a < 0x30) {\r |
78 | // comm flag/cmd/status (0xE-0x2F)\r |
79 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
80 | goto end;\r |
81 | }\r |
82 | \r |
fa1e5e29 |
83 | dprintf("m68k_regs FIXME invalid read @ %02x", a);\r |
cc68a136 |
84 | \r |
85 | end:\r |
86 | \r |
672ad671 |
87 | // dprintf("ret = %04x", d);\r |
cc68a136 |
88 | return d;\r |
89 | }\r |
4ff2d527 |
90 | #endif\r |
cc68a136 |
91 | \r |
4ff2d527 |
92 | #ifndef _ASM_CD_MEMORY_C\r |
93 | static\r |
94 | #endif\r |
95 | void m68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
96 | {\r |
97 | a &= 0x3f;\r |
672ad671 |
98 | // dprintf("m68k_regs w%2i: [%02x] %02x @%06x", realsize, a, d, SekPc);\r |
cc68a136 |
99 | \r |
100 | switch (a) {\r |
101 | case 0:\r |
672ad671 |
102 | d &= 1;\r |
cc68a136 |
103 | if ((d&1) && (Pico_mcd->s68k_regs[0x33]&(1<<2))) { dprintf("m68k: s68k irq 2"); SekInterruptS68k(2); }\r |
c459aefd |
104 | return;\r |
cc68a136 |
105 | case 1:\r |
672ad671 |
106 | d &= 3;\r |
51a902ae |
107 | if (!(d&1)) Pico_mcd->m.state_flags |= 1; // reset pending, needed to be sure we fetch the right vectors on reset\r |
c459aefd |
108 | if ( (Pico_mcd->m.busreq&1) != (d&1)) dprintf("m68k: s68k reset %i", !(d&1));\r |
109 | if ( (Pico_mcd->m.busreq&2) != (d&2)) dprintf("m68k: s68k brq %i", (d&2)>>1);\r |
51a902ae |
110 | if ((Pico_mcd->m.state_flags&1) && (d&3)==1) {\r |
cc68a136 |
111 | SekResetS68k(); // S68k comes out of RESET or BRQ state\r |
4ff2d527 |
112 | Pico_mcd->m.state_flags&=~1;\r |
113 | dprintf("m68k: resetting s68k, cycles=%i", SekCyclesLeft);\r |
cc68a136 |
114 | }\r |
c459aefd |
115 | Pico_mcd->m.busreq = d;\r |
116 | return;\r |
672ad671 |
117 | case 2:\r |
118 | Pico_mcd->s68k_regs[2] = d; // really use s68k side register\r |
119 | return;\r |
66fdc0f0 |
120 | case 3: {\r |
121 | u32 dold = Pico_mcd->s68k_regs[3]&0x1f;\r |
c008977e |
122 | //printf("m68k_regs w3: %02x @%06x\n", (u8)d, SekPc);\r |
672ad671 |
123 | d &= 0xc2;\r |
66fdc0f0 |
124 | if ((dold>>6) != ((d>>6)&3))\r |
672ad671 |
125 | dprintf("m68k: prg bank: %i -> %i", (Pico_mcd->s68k_regs[a]>>6), ((d>>6)&3));\r |
126 | //if ((Pico_mcd->s68k_regs[3]&4) != (d&4)) dprintf("m68k: ram mode %i mbit", (d&4) ? 1 : 2);\r |
127 | //if ((Pico_mcd->s68k_regs[3]&2) != (d&2)) dprintf("m68k: %s", (d&4) ? ((d&2) ? "word swap req" : "noop?") :\r |
128 | // ((d&2) ? "word ram to s68k" : "word ram to m68k"));\r |
66fdc0f0 |
129 | if (dold & 4) {\r |
130 | d ^= 2; // writing 0 to DMNA actually sets it, 1 does nothing\r |
131 | } else {\r |
132 | //dold &= ~2; // ??\r |
89fa852d |
133 | #if 1\r |
134 | if ((d & 2) && !(dold & 2)) {\r |
135 | Pico_mcd->m.state_flags |= 2; // we must delay setting DMNA bit (needed for Silpheed)\r |
136 | d &= ~2;\r |
137 | }\r |
138 | #else\r |
66fdc0f0 |
139 | if (d & 2) dold &= ~1; // return word RAM to s68k in 2M mode\r |
89fa852d |
140 | #endif\r |
66fdc0f0 |
141 | }\r |
142 | Pico_mcd->s68k_regs[3] = d | dold; // really use s68k side register\r |
7a1f6e45 |
143 | #ifdef USE_POLL_DETECT\r |
144 | if ((s68k_poll_adclk&0xfe) == 2 && s68k_poll_cnt > POLL_LIMIT) {\r |
145 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
146 | //printf("%05i:%03i: s68k poll release, a=%02x\n", Pico.m.frame_count, Pico.m.scanline, a);\r |
147 | }\r |
148 | #endif\r |
672ad671 |
149 | return;\r |
66fdc0f0 |
150 | }\r |
c459aefd |
151 | case 6:\r |
d1df8786 |
152 | Pico_mcd->bios[0x72 + 1] = d; // simple hint vector changer\r |
c459aefd |
153 | return;\r |
154 | case 7:\r |
d1df8786 |
155 | Pico_mcd->bios[0x72] = d;\r |
913ef4b7 |
156 | dprintf("hint vector set to %08x", PicoRead32(0x70));\r |
c459aefd |
157 | return;\r |
7a1f6e45 |
158 | case 0xf:\r |
159 | d = (d << 1) | ((d >> 7) & 1); // rol8 1 (special case)\r |
cc68a136 |
160 | case 0xe:\r |
672ad671 |
161 | //dprintf("m68k: comm flag: %02x", d);\r |
cc68a136 |
162 | Pico_mcd->s68k_regs[0xe] = d;\r |
7a1f6e45 |
163 | #ifdef USE_POLL_DETECT\r |
164 | if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) {\r |
165 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
166 | //printf("%05i:%03i: s68k poll release, a=%02x\n", Pico.m.frame_count, Pico.m.scanline, a);\r |
167 | }\r |
168 | #endif\r |
c459aefd |
169 | return;\r |
672ad671 |
170 | }\r |
171 | \r |
172 | if ((a&0xf0) == 0x10) {\r |
cc68a136 |
173 | Pico_mcd->s68k_regs[a] = d;\r |
7a1f6e45 |
174 | #ifdef USE_POLL_DETECT\r |
175 | if ((a&0xfe) == (s68k_poll_adclk&0xfe) && s68k_poll_cnt > POLL_LIMIT) {\r |
176 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
177 | //printf("%05i:%03i: s68k poll release, a=%02x\n", Pico.m.frame_count, Pico.m.scanline, a);\r |
178 | }\r |
179 | #endif\r |
672ad671 |
180 | return;\r |
cc68a136 |
181 | }\r |
182 | \r |
fa1e5e29 |
183 | dprintf("m68k FIXME: invalid write? [%02x] %02x", a, d);\r |
cc68a136 |
184 | }\r |
185 | \r |
186 | \r |
913ef4b7 |
187 | #define READ_FONT_DATA(basemask) \\r |
188 | { \\r |
189 | unsigned int fnt = *(unsigned int *)(Pico_mcd->s68k_regs + 0x4c); \\r |
190 | unsigned int col0 = (fnt >> 8) & 0x0f, col1 = (fnt >> 12) & 0x0f; \\r |
191 | if (fnt & (basemask << 0)) d = col1 ; else d = col0; \\r |
192 | if (fnt & (basemask << 1)) d |= col1 << 4; else d |= col0 << 4; \\r |
193 | if (fnt & (basemask << 2)) d |= col1 << 8; else d |= col0 << 8; \\r |
194 | if (fnt & (basemask << 3)) d |= col1 << 12; else d |= col0 << 12; \\r |
195 | }\r |
196 | \r |
cc68a136 |
197 | \r |
4ff2d527 |
198 | #ifndef _ASM_CD_MEMORY_C\r |
199 | static\r |
200 | #endif\r |
201 | u32 s68k_reg_read16(u32 a)\r |
cc68a136 |
202 | {\r |
203 | u32 d=0;\r |
cc68a136 |
204 | \r |
672ad671 |
205 | // dprintf("s68k_regs r%2i: [%02x] @ %06x", realsize&~1, a+(realsize&1), SekPcS68k);\r |
cc68a136 |
206 | \r |
207 | switch (a) {\r |
208 | case 0:\r |
7a1f6e45 |
209 | return ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state\r |
672ad671 |
210 | case 2:\r |
211 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0x1f);\r |
c008977e |
212 | //printf("s68k_regs r3: %02x @%06x\n", (u8)d, SekPcS68k);\r |
7a1f6e45 |
213 | goto poll_detect;\r |
cc68a136 |
214 | case 6:\r |
7a1f6e45 |
215 | return CDC_Read_Reg();\r |
cc68a136 |
216 | case 8:\r |
7a1f6e45 |
217 | return Read_CDC_Host(1); // Gens returns 0 here on byte reads\r |
cc68a136 |
218 | case 0xC:\r |
4f265db7 |
219 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
220 | dprintf("s68k stopwatch timer read (%04x)", d);\r |
7a1f6e45 |
221 | return d;\r |
d1df8786 |
222 | case 0x30:\r |
7a1f6e45 |
223 | dprintf("s68k int3 timer read (%02x)", Pico_mcd->s68k_regs[31]);\r |
224 | return Pico_mcd->s68k_regs[31];\r |
cc68a136 |
225 | case 0x34: // fader\r |
7a1f6e45 |
226 | return 0; // no busy bit\r |
913ef4b7 |
227 | case 0x50: // font data (check: Lunar 2, Silpheed)\r |
228 | READ_FONT_DATA(0x00100000);\r |
7a1f6e45 |
229 | return d;\r |
913ef4b7 |
230 | case 0x52:\r |
231 | READ_FONT_DATA(0x00010000);\r |
7a1f6e45 |
232 | return d;\r |
913ef4b7 |
233 | case 0x54:\r |
234 | READ_FONT_DATA(0x10000000);\r |
7a1f6e45 |
235 | return d;\r |
913ef4b7 |
236 | case 0x56:\r |
237 | READ_FONT_DATA(0x01000000);\r |
7a1f6e45 |
238 | return d;\r |
cc68a136 |
239 | }\r |
240 | \r |
241 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
242 | \r |
7a1f6e45 |
243 | if (a >= 0x0e && a < 0x30) goto poll_detect;\r |
cc68a136 |
244 | \r |
7a1f6e45 |
245 | return d;\r |
cc68a136 |
246 | \r |
7a1f6e45 |
247 | poll_detect:\r |
248 | #ifdef USE_POLL_DETECT\r |
249 | // polling detection\r |
250 | if (a == (s68k_poll_adclk&0xfe)) {\r |
251 | unsigned int clkdiff = SekCyclesDoneS68k() - (s68k_poll_adclk>>8);\r |
252 | if (clkdiff <= POLL_CYCLES) {\r |
253 | s68k_poll_cnt++;\r |
254 | //printf("-- diff: %u, cnt = %i\n", clkdiff, s68k_poll_cnt);\r |
255 | if (s68k_poll_cnt > POLL_LIMIT) {\r |
256 | SekSetStopS68k(1);\r |
257 | //printf("%05i:%03i: s68k poll detected @ %06x, a=%02x\n", Pico.m.frame_count, Pico.m.scanline, SekPcS68k, a);\r |
258 | }\r |
259 | s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a;\r |
260 | return d;\r |
261 | }\r |
262 | }\r |
263 | s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a;\r |
264 | s68k_poll_cnt = 0;\r |
265 | \r |
266 | #endif\r |
cc68a136 |
267 | return d;\r |
268 | }\r |
269 | \r |
4ff2d527 |
270 | #ifndef _ASM_CD_MEMORY_C\r |
271 | static\r |
272 | #endif\r |
273 | void s68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
274 | {\r |
672ad671 |
275 | //dprintf("s68k_regs w%2i: [%02x] %02x @ %06x", realsize, a, d, SekPcS68k);\r |
cc68a136 |
276 | \r |
277 | // TODO: review against Gens\r |
48e8482f |
278 | // Warning: d might have upper bits set\r |
cc68a136 |
279 | switch (a) {\r |
672ad671 |
280 | case 2:\r |
281 | return; // only m68k can change WP\r |
fa1e5e29 |
282 | case 3: {\r |
283 | int dold = Pico_mcd->s68k_regs[3];\r |
c008977e |
284 | //printf("s68k_regs w3: %02x @%06x\n", (u8)d, SekPcS68k);\r |
672ad671 |
285 | d &= 0x1d;\r |
4ff2d527 |
286 | d |= dold&0xc2;\r |
d0d47c5b |
287 | if (d&4) {\r |
4ff2d527 |
288 | if ((d ^ dold) & 5) {\r |
289 | d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit\r |
290 | #ifdef _ASM_CD_MEMORY_C\r |
291 | PicoMemResetCD(d);\r |
292 | #endif\r |
293 | }\r |
48e8482f |
294 | #ifdef _ASM_CD_MEMORY_C\r |
295 | if ((d ^ dold) & 0x1d)\r |
296 | PicoMemResetCDdecode(d);\r |
297 | #endif\r |
fa1e5e29 |
298 | if (!(dold & 4)) {\r |
299 | dprintf("wram mode 2M->1M");\r |
300 | wram_2M_to_1M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
301 | }\r |
d0d47c5b |
302 | } else {\r |
fa1e5e29 |
303 | if (dold & 4) {\r |
304 | dprintf("wram mode 1M->2M");\r |
4ff2d527 |
305 | if (!(d&1)) { // it didn't set the ret bit, which means it doesn't want to give WRAM to m68k\r |
306 | d &= ~3;\r |
307 | d |= (dold&1) ? 2 : 1; // then give it to the one which had bank0 in 1M mode\r |
308 | }\r |
fa1e5e29 |
309 | wram_1M_to_2M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
310 | #ifdef _ASM_CD_MEMORY_C\r |
311 | PicoMemResetCD(d);\r |
312 | #endif\r |
313 | }\r |
314 | else\r |
315 | d |= dold&1;\r |
316 | if (d&1) d &= ~2; // return word RAM to m68k in 2M mode\r |
d0d47c5b |
317 | }\r |
672ad671 |
318 | break;\r |
fa1e5e29 |
319 | }\r |
cc68a136 |
320 | case 4:\r |
321 | dprintf("s68k CDC dest: %x", d&7);\r |
322 | Pico_mcd->s68k_regs[4] = (Pico_mcd->s68k_regs[4]&0xC0) | (d&7); // CDC mode\r |
323 | return;\r |
324 | case 5:\r |
c459aefd |
325 | //dprintf("s68k CDC reg addr: %x", d&0xf);\r |
cc68a136 |
326 | break;\r |
327 | case 7:\r |
328 | CDC_Write_Reg(d);\r |
329 | return;\r |
330 | case 0xa:\r |
331 | dprintf("s68k set CDC dma addr");\r |
332 | break;\r |
d1df8786 |
333 | case 0xc:\r |
4f265db7 |
334 | case 0xd:\r |
d1df8786 |
335 | dprintf("s68k set stopwatch timer");\r |
4f265db7 |
336 | Pico_mcd->m.timer_stopwatch = 0;\r |
337 | return;\r |
1cd356a3 |
338 | case 0xe:\r |
7a1f6e45 |
339 | Pico_mcd->s68k_regs[0xf] = (d>>1) | (d<<7); // ror8 1, Gens note: Dragons lair\r |
1cd356a3 |
340 | return;\r |
d1df8786 |
341 | case 0x31:\r |
4f265db7 |
342 | dprintf("s68k set int3 timer: %02x", d);\r |
48e8482f |
343 | Pico_mcd->m.timer_int3 = (d & 0xff) << 16;\r |
d1df8786 |
344 | break;\r |
cc68a136 |
345 | case 0x33: // IRQ mask\r |
346 | dprintf("s68k irq mask: %02x", d);\r |
347 | if ((d&(1<<4)) && (Pico_mcd->s68k_regs[0x37]&4) && !(Pico_mcd->s68k_regs[0x33]&(1<<4))) {\r |
348 | CDD_Export_Status();\r |
cc68a136 |
349 | }\r |
350 | break;\r |
351 | case 0x34: // fader\r |
352 | Pico_mcd->s68k_regs[a] = (u8) d & 0x7f;\r |
353 | return;\r |
672ad671 |
354 | case 0x36:\r |
355 | return; // d/m bit is unsetable\r |
356 | case 0x37: {\r |
357 | u32 d_old = Pico_mcd->s68k_regs[0x37];\r |
358 | Pico_mcd->s68k_regs[0x37] = d&7;\r |
359 | if ((d&4) && !(d_old&4)) {\r |
cc68a136 |
360 | CDD_Export_Status();\r |
cc68a136 |
361 | }\r |
672ad671 |
362 | return;\r |
363 | }\r |
cc68a136 |
364 | case 0x4b:\r |
365 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
366 | CDD_Import_Command();\r |
367 | return;\r |
368 | }\r |
369 | \r |
1cd356a3 |
370 | if ((a&0x1f0) == 0x10 || (a >= 0x38 && a < 0x42))\r |
cc68a136 |
371 | {\r |
fa1e5e29 |
372 | dprintf("s68k FIXME: invalid write @ %02x?", a);\r |
cc68a136 |
373 | return;\r |
374 | }\r |
375 | \r |
376 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
377 | }\r |
378 | \r |
379 | \r |
4ff2d527 |
380 | #ifndef _ASM_CD_MEMORY_C\r |
fa1e5e29 |
381 | static u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
382 | {\r |
383 | u32 d=0;\r |
384 | \r |
672ad671 |
385 | if ((a&0xffffc0)==0xa12000) {\r |
cb4a513a |
386 | d=m68k_reg_read16(a);\r |
672ad671 |
387 | goto end;\r |
388 | }\r |
cc68a136 |
389 | \r |
fa1e5e29 |
390 | dprintf("m68k FIXME: unusual r%i: %06x @%06x", realsize&~1, (a&0xfffffe)+(realsize&1), SekPc);\r |
cc68a136 |
391 | \r |
392 | end:\r |
393 | return d;\r |
394 | }\r |
395 | \r |
cc68a136 |
396 | \r |
fa1e5e29 |
397 | static void OtherWrite8End(u32 a, u32 d, int realsize)\r |
cc68a136 |
398 | {\r |
cb4a513a |
399 | if ((a&0xffffc0)==0xa12000) { m68k_reg_write8(a, d); return; }\r |
cc68a136 |
400 | \r |
fa1e5e29 |
401 | dprintf("m68k FIXME: strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
402 | }\r |
403 | \r |
cc68a136 |
404 | \r |
fa1e5e29 |
405 | #undef _ASM_MEMORY_C\r |
406 | #include "../MemoryCmn.c"\r |
4ff2d527 |
407 | #include "cell_map.c"\r |
408 | #endif // !def _ASM_CD_MEMORY_C\r |
cc68a136 |
409 | \r |
410 | // -----------------------------------------------------------------\r |
411 | // Read Rom and read Ram\r |
412 | \r |
4ff2d527 |
413 | //u8 PicoReadM68k8_(u32 a);\r |
414 | #ifdef _ASM_CD_MEMORY_C\r |
415 | u8 PicoReadM68k8(u32 a);\r |
416 | #else\r |
417 | static u8 PicoReadM68k8(u32 a)\r |
cc68a136 |
418 | {\r |
419 | u32 d=0;\r |
420 | \r |
421 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
422 | \r |
423 | a&=0xffffff;\r |
424 | \r |
425 | if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios\r |
426 | \r |
427 | // prg RAM\r |
4ff2d527 |
428 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
429 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
430 | d = *(prg_bank+((a^1)&0x1ffff));\r |
431 | goto end;\r |
432 | }\r |
433 | \r |
d0d47c5b |
434 | // word RAM\r |
435 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
436 | wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
437 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
438 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
439 | if (a >= 0x220000)\r |
440 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
441 | else a &= 0x1ffff;\r |
442 | d = Pico_mcd->word_ram1M[bank][a^1];\r |
d0d47c5b |
443 | } else {\r |
444 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
445 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
446 | }\r |
913ef4b7 |
447 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
448 | goto end;\r |
449 | }\r |
450 | \r |
cc68a136 |
451 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
452 | \r |
c459aefd |
453 | if ((a&0xffffc0)==0xa12000)\r |
454 | rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
455 | \r |
cc68a136 |
456 | d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r |
457 | \r |
c459aefd |
458 | if ((a&0xffffc0)==0xa12000)\r |
459 | rdprintf("ret = %02x", (u8)d);\r |
672ad671 |
460 | \r |
cc68a136 |
461 | end:\r |
462 | \r |
463 | #ifdef __debug_io\r |
464 | dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
465 | #endif\r |
466 | return (u8)d;\r |
467 | }\r |
4ff2d527 |
468 | #endif\r |
cc68a136 |
469 | \r |
ab0607f7 |
470 | \r |
4ff2d527 |
471 | #ifdef _ASM_CD_MEMORY_C\r |
472 | u16 PicoReadM68k16(u32 a);\r |
473 | #else\r |
474 | static u16 PicoReadM68k16(u32 a)\r |
cc68a136 |
475 | {\r |
476 | u16 d=0;\r |
477 | \r |
478 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
479 | \r |
480 | a&=0xfffffe;\r |
481 | \r |
482 | if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios\r |
483 | \r |
484 | // prg RAM\r |
4ff2d527 |
485 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
486 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
c008977e |
487 | wrdprintf("m68k_prgram r16: [%i,%06x] @%06x", Pico_mcd->s68k_regs[3]>>6, a, SekPc);\r |
cc68a136 |
488 | d = *(u16 *)(prg_bank+(a&0x1fffe));\r |
c008977e |
489 | wrdprintf("ret = %04x", d);\r |
cc68a136 |
490 | goto end;\r |
491 | }\r |
492 | \r |
d0d47c5b |
493 | // word RAM\r |
494 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
495 | wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
496 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
497 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
498 | if (a >= 0x220000)\r |
499 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
500 | else a &= 0x1fffe;\r |
501 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
d0d47c5b |
502 | } else {\r |
503 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
504 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
505 | }\r |
913ef4b7 |
506 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
507 | goto end;\r |
508 | }\r |
509 | \r |
c459aefd |
510 | if ((a&0xffffc0)==0xa12000)\r |
511 | rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
512 | \r |
cc68a136 |
513 | d = (u16)OtherRead16(a, 16);\r |
514 | \r |
c459aefd |
515 | if ((a&0xffffc0)==0xa12000)\r |
516 | rdprintf("ret = %04x", d);\r |
672ad671 |
517 | \r |
cc68a136 |
518 | end:\r |
519 | \r |
520 | #ifdef __debug_io\r |
521 | dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
522 | #endif\r |
523 | return d;\r |
524 | }\r |
4ff2d527 |
525 | #endif\r |
cc68a136 |
526 | \r |
ab0607f7 |
527 | \r |
4ff2d527 |
528 | #ifdef _ASM_CD_MEMORY_C\r |
529 | u32 PicoReadM68k32(u32 a);\r |
530 | #else\r |
531 | static u32 PicoReadM68k32(u32 a)\r |
cc68a136 |
532 | {\r |
533 | u32 d=0;\r |
534 | \r |
535 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
536 | \r |
537 | a&=0xfffffe;\r |
538 | \r |
539 | if (a < 0x20000) { u16 *pm=(u16 *)(Pico_mcd->bios+a); d = (pm[0]<<16)|pm[1]; goto end; } // bios\r |
540 | \r |
541 | // prg RAM\r |
4ff2d527 |
542 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
543 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
544 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
545 | d = (pm[0]<<16)|pm[1];\r |
546 | goto end;\r |
547 | }\r |
548 | \r |
d0d47c5b |
549 | // word RAM\r |
550 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
551 | wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
552 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
553 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
554 | if (a >= 0x220000) { // cell arranged\r |
555 | u32 a1, a2;\r |
556 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
557 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
558 | else a2 = a1 + 2;\r |
559 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16;\r |
560 | d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2);\r |
bf098bc5 |
561 | } else {\r |
fa1e5e29 |
562 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
bf098bc5 |
563 | }\r |
d0d47c5b |
564 | } else {\r |
565 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
566 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
567 | }\r |
913ef4b7 |
568 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
569 | goto end;\r |
570 | }\r |
571 | \r |
c459aefd |
572 | if ((a&0xffffc0)==0xa12000)\r |
573 | rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
574 | \r |
cc68a136 |
575 | d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
576 | \r |
c459aefd |
577 | if ((a&0xffffc0)==0xa12000)\r |
578 | rdprintf("ret = %08x", d);\r |
672ad671 |
579 | \r |
cc68a136 |
580 | end:\r |
581 | #ifdef __debug_io\r |
582 | dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
583 | #endif\r |
584 | return d;\r |
585 | }\r |
4ff2d527 |
586 | #endif\r |
cc68a136 |
587 | \r |
ab0607f7 |
588 | \r |
cc68a136 |
589 | // -----------------------------------------------------------------\r |
590 | // Write Ram\r |
591 | \r |
4ff2d527 |
592 | #ifdef _ASM_CD_MEMORY_C\r |
593 | void PicoWriteM68k8(u32 a,u8 d);\r |
594 | #else\r |
595 | static void PicoWriteM68k8(u32 a,u8 d)\r |
cc68a136 |
596 | {\r |
597 | #ifdef __debug_io\r |
598 | dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
599 | #endif\r |
600 | //if ((a&0xe0ffff)==0xe0a9ba+0x69c)\r |
601 | // dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
602 | \r |
603 | \r |
ab0607f7 |
604 | if ((a&0xe00000)==0xe00000) { // Ram\r |
605 | *(u8 *)(Pico.ram+((a^1)&0xffff)) = d;\r |
606 | return;\r |
607 | }\r |
cc68a136 |
608 | \r |
609 | a&=0xffffff;\r |
610 | \r |
611 | // prg RAM\r |
4ff2d527 |
612 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
613 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
bf098bc5 |
614 | *(u8 *)(prg_bank+((a^1)&0x1ffff))=d;\r |
cc68a136 |
615 | return;\r |
616 | }\r |
617 | \r |
d0d47c5b |
618 | // word RAM\r |
619 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
620 | wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc);\r |
d0d47c5b |
621 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
622 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
623 | if (a >= 0x220000)\r |
624 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
625 | else a &= 0x1ffff;\r |
626 | *(u8 *)(Pico_mcd->word_ram1M[bank]+(a^1))=d;\r |
d0d47c5b |
627 | } else {\r |
628 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
629 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
630 | }\r |
631 | return;\r |
632 | }\r |
633 | \r |
c459aefd |
634 | if ((a&0xffffc0)==0xa12000)\r |
635 | rdprintf("m68k_regs w8: [%02x] %02x @%06x", a&0x3f, d, SekPc);\r |
672ad671 |
636 | \r |
cc68a136 |
637 | OtherWrite8(a,d,8);\r |
638 | }\r |
4ff2d527 |
639 | #endif\r |
cc68a136 |
640 | \r |
ab0607f7 |
641 | \r |
4ff2d527 |
642 | #ifdef _ASM_CD_MEMORY_C\r |
643 | void PicoWriteM68k16(u32 a,u16 d);\r |
644 | #else\r |
645 | static void PicoWriteM68k16(u32 a,u16 d)\r |
cc68a136 |
646 | {\r |
647 | #ifdef __debug_io\r |
648 | dprintf("w16: %06x, %04x", a&0xffffff, d);\r |
649 | #endif\r |
cc68a136 |
650 | // dprintf("w16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
651 | \r |
ab0607f7 |
652 | if ((a&0xe00000)==0xe00000) { // Ram\r |
653 | *(u16 *)(Pico.ram+(a&0xfffe))=d;\r |
654 | return;\r |
655 | }\r |
cc68a136 |
656 | \r |
657 | a&=0xfffffe;\r |
658 | \r |
659 | // prg RAM\r |
4ff2d527 |
660 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
661 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
c008977e |
662 | wrdprintf("m68k_prgram w16: [%i,%06x] %04x @%06x", Pico_mcd->s68k_regs[3]>>6, a, d, SekPc);\r |
cc68a136 |
663 | *(u16 *)(prg_bank+(a&0x1fffe))=d;\r |
664 | return;\r |
665 | }\r |
666 | \r |
d0d47c5b |
667 | // word RAM\r |
668 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
669 | wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc);\r |
d0d47c5b |
670 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
671 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
672 | if (a >= 0x220000)\r |
673 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
674 | else a &= 0x1fffe;\r |
675 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a)=d;\r |
d0d47c5b |
676 | } else {\r |
677 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
678 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
679 | }\r |
680 | return;\r |
681 | }\r |
682 | \r |
7a1f6e45 |
683 | // regs\r |
684 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
685 | rdprintf("m68k_regs w16: [%02x] %04x @%06x", a&0x3f, d, SekPc);\r |
7a1f6e45 |
686 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
687 | Pico_mcd->s68k_regs[0xe] = d >> 8;\r |
688 | #ifdef USE_POLL_DETECT\r |
689 | if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) {\r |
690 | SekSetStopS68k(0); s68k_poll_adclk = -1;\r |
691 | //printf("%05i:%03i: s68k poll release, a=%02x\n", Pico.m.frame_count, Pico.m.scanline, a);\r |
692 | }\r |
693 | #endif\r |
694 | return;\r |
695 | }\r |
696 | m68k_reg_write8(a, d>>8);\r |
697 | m68k_reg_write8(a+1,d&0xff);\r |
698 | return;\r |
699 | }\r |
cc68a136 |
700 | \r |
701 | OtherWrite16(a,d);\r |
702 | }\r |
4ff2d527 |
703 | #endif\r |
cc68a136 |
704 | \r |
ab0607f7 |
705 | \r |
4ff2d527 |
706 | #ifdef _ASM_CD_MEMORY_C\r |
707 | void PicoWriteM68k32(u32 a,u32 d);\r |
708 | #else\r |
709 | static void PicoWriteM68k32(u32 a,u32 d)\r |
cc68a136 |
710 | {\r |
711 | #ifdef __debug_io\r |
712 | dprintf("w32: %06x, %08x", a&0xffffff, d);\r |
713 | #endif\r |
714 | \r |
715 | if ((a&0xe00000)==0xe00000)\r |
716 | {\r |
717 | // Ram:\r |
718 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
719 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
720 | return;\r |
721 | }\r |
722 | \r |
723 | a&=0xfffffe;\r |
724 | \r |
725 | // prg RAM\r |
4ff2d527 |
726 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
727 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
728 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
729 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
730 | return;\r |
731 | }\r |
732 | \r |
672ad671 |
733 | // word RAM\r |
d0d47c5b |
734 | if ((a&0xfc0000)==0x200000) {\r |
735 | if (d != 0) // don't log clears\r |
913ef4b7 |
736 | wrdprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc);\r |
d0d47c5b |
737 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
738 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
739 | if (a >= 0x220000) { // cell arranged\r |
740 | u32 a1, a2;\r |
741 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
742 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
743 | else a2 = a1 + 2;\r |
744 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16;\r |
745 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d;\r |
bf098bc5 |
746 | } else {\r |
fa1e5e29 |
747 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
748 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
bf098bc5 |
749 | }\r |
d0d47c5b |
750 | } else {\r |
751 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
752 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
753 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
754 | }\r |
672ad671 |
755 | return;\r |
d0d47c5b |
756 | }\r |
672ad671 |
757 | \r |
c459aefd |
758 | if ((a&0xffffc0)==0xa12000)\r |
759 | rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);\r |
cc68a136 |
760 | \r |
761 | OtherWrite16(a, (u16)(d>>16));\r |
762 | OtherWrite16(a+2,(u16)d);\r |
763 | }\r |
4ff2d527 |
764 | #endif\r |
cc68a136 |
765 | \r |
766 | \r |
767 | // -----------------------------------------------------------------\r |
768 | \r |
4ff2d527 |
769 | #ifdef _ASM_CD_MEMORY_C\r |
770 | u8 PicoReadS68k8(u32 a);\r |
771 | #else\r |
772 | static u8 PicoReadS68k8(u32 a)\r |
cc68a136 |
773 | {\r |
774 | u32 d=0;\r |
775 | \r |
776 | a&=0xffffff;\r |
777 | \r |
778 | // prg RAM\r |
779 | if (a < 0x80000) {\r |
780 | d = *(Pico_mcd->prg_ram+(a^1));\r |
781 | goto end;\r |
782 | }\r |
783 | \r |
784 | // regs\r |
785 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
786 | a &= 0x1ff;\r |
787 | rdprintf("s68k_regs r8: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
788 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
789 | d = gfx_cd_read(a&~1);\r |
790 | else d = s68k_reg_read16(a&~1);\r |
791 | if ((a&1)==0) d>>=8;\r |
c459aefd |
792 | rdprintf("ret = %02x", (u8)d);\r |
cc68a136 |
793 | goto end;\r |
794 | }\r |
795 | \r |
d0d47c5b |
796 | // word RAM (2M area)\r |
797 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
fa1e5e29 |
798 | // test: batman returns\r |
913ef4b7 |
799 | wrdprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
800 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
801 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
802 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
803 | if (a&1) d &= 0x0f;\r |
804 | else d >>= 4;\r |
805 | dprintf("FIXME: decode");\r |
d0d47c5b |
806 | } else {\r |
807 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
808 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
809 | }\r |
913ef4b7 |
810 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
811 | goto end;\r |
812 | }\r |
813 | \r |
814 | // word RAM (1M area)\r |
68cba51e |
815 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
816 | int bank;\r |
913ef4b7 |
817 | wrdprintf("s68k_wram1M r8: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
818 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
819 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
820 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
821 | d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff];\r |
913ef4b7 |
822 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
823 | goto end;\r |
824 | }\r |
825 | \r |
4f265db7 |
826 | // PCM\r |
827 | if ((a&0xff8000)==0xff0000) {\r |
1cd356a3 |
828 | dprintf("s68k_pcm r8: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
829 | a &= 0x7fff;\r |
830 | if (a >= 0x2000)\r |
831 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
832 | else if (a >= 0x20) {\r |
833 | a &= 0x1e;\r |
834 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
835 | if (a & 2) d >>= 8;\r |
836 | }\r |
837 | dprintf("ret = %02x", (u8)d);\r |
838 | goto end;\r |
839 | }\r |
840 | \r |
ab0607f7 |
841 | // bram\r |
842 | if ((a&0xff0000)==0xfe0000) {\r |
843 | d = Pico_mcd->bram[(a>>1)&0x1fff];\r |
844 | goto end;\r |
845 | }\r |
846 | \r |
cc68a136 |
847 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
848 | \r |
849 | end:\r |
850 | \r |
851 | #ifdef __debug_io2\r |
852 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
853 | #endif\r |
854 | return (u8)d;\r |
855 | }\r |
4ff2d527 |
856 | #endif\r |
cc68a136 |
857 | \r |
ab0607f7 |
858 | \r |
4ff2d527 |
859 | //u16 PicoReadS68k16_(u32 a);\r |
860 | #ifdef _ASM_CD_MEMORY_C\r |
861 | u16 PicoReadS68k16(u32 a);\r |
862 | #else\r |
863 | static u16 PicoReadS68k16(u32 a)\r |
cc68a136 |
864 | {\r |
4f265db7 |
865 | u32 d=0;\r |
cc68a136 |
866 | \r |
867 | a&=0xfffffe;\r |
868 | \r |
869 | // prg RAM\r |
870 | if (a < 0x80000) {\r |
c008977e |
871 | wrdprintf("s68k_prgram r16: [%06x] @%06x", a, SekPcS68k);\r |
cc68a136 |
872 | d = *(u16 *)(Pico_mcd->prg_ram+a);\r |
c008977e |
873 | wrdprintf("ret = %04x", d);\r |
cc68a136 |
874 | goto end;\r |
875 | }\r |
876 | \r |
877 | // regs\r |
878 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
879 | a &= 0x1fe;\r |
880 | rdprintf("s68k_regs r16: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
881 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
882 | d = gfx_cd_read(a);\r |
883 | else d = s68k_reg_read16(a);\r |
c459aefd |
884 | rdprintf("ret = %04x", d);\r |
cc68a136 |
885 | goto end;\r |
886 | }\r |
887 | \r |
d0d47c5b |
888 | // word RAM (2M area)\r |
889 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
890 | wrdprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
891 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
892 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
893 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
894 | d |= d << 4; d &= ~0xf0;\r |
895 | dprintf("FIXME: decode");\r |
d0d47c5b |
896 | } else {\r |
897 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
898 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
899 | }\r |
913ef4b7 |
900 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
901 | goto end;\r |
902 | }\r |
903 | \r |
904 | // word RAM (1M area)\r |
68cba51e |
905 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
906 | int bank;\r |
913ef4b7 |
907 | wrdprintf("s68k_wram1M r16: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
908 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
909 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
910 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
911 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
913ef4b7 |
912 | wrdprintf("ret = %04x", d);\r |
ab0607f7 |
913 | goto end;\r |
914 | }\r |
915 | \r |
916 | // bram\r |
917 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
918 | dprintf("FIXME: s68k_bram r16: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
919 | a = (a>>1)&0x1fff;\r |
4f265db7 |
920 | d = Pico_mcd->bram[a++]; // Gens does little endian here, and so do we..\r |
4ff2d527 |
921 | d|= Pico_mcd->bram[a++] << 8; // This is most likely wrong\r |
ab0607f7 |
922 | dprintf("ret = %04x", d);\r |
d0d47c5b |
923 | goto end;\r |
924 | }\r |
925 | \r |
4f265db7 |
926 | // PCM\r |
927 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
928 | dprintf("FIXME: s68k_pcm r16: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
929 | a &= 0x7fff;\r |
930 | if (a >= 0x2000)\r |
931 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
932 | else if (a >= 0x20) {\r |
933 | a &= 0x1e;\r |
934 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
935 | if (a & 2) d >>= 8;\r |
936 | }\r |
937 | dprintf("ret = %04x", d);\r |
938 | goto end;\r |
939 | }\r |
940 | \r |
cc68a136 |
941 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
942 | \r |
943 | end:\r |
944 | \r |
945 | #ifdef __debug_io2\r |
946 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
947 | #endif\r |
948 | return d;\r |
949 | }\r |
4ff2d527 |
950 | #endif\r |
cc68a136 |
951 | \r |
ab0607f7 |
952 | \r |
4ff2d527 |
953 | #ifdef _ASM_CD_MEMORY_C\r |
954 | u32 PicoReadS68k32(u32 a);\r |
955 | #else\r |
956 | static u32 PicoReadS68k32(u32 a)\r |
cc68a136 |
957 | {\r |
958 | u32 d=0;\r |
959 | \r |
960 | a&=0xfffffe;\r |
961 | \r |
962 | // prg RAM\r |
963 | if (a < 0x80000) {\r |
964 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
965 | d = (pm[0]<<16)|pm[1];\r |
966 | goto end;\r |
967 | }\r |
968 | \r |
969 | // regs\r |
970 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
971 | a &= 0x1fe;\r |
972 | rdprintf("s68k_regs r32: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
973 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
974 | d = (gfx_cd_read(a)<<16)|gfx_cd_read(a+2);\r |
975 | else d = (s68k_reg_read16(a)<<16)|s68k_reg_read16(a+2);\r |
c459aefd |
976 | rdprintf("ret = %08x", d);\r |
cc68a136 |
977 | goto end;\r |
978 | }\r |
979 | \r |
d0d47c5b |
980 | // word RAM (2M area)\r |
981 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
982 | wrdprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
983 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
984 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
985 | a >>= 1;\r |
986 | d = Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] << 16;\r |
987 | d |= Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff];\r |
988 | d |= d << 4; d &= 0x0f0f0f0f;\r |
d0d47c5b |
989 | } else {\r |
990 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
991 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
992 | }\r |
913ef4b7 |
993 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
994 | goto end;\r |
995 | }\r |
996 | \r |
997 | // word RAM (1M area)\r |
68cba51e |
998 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
999 | int bank;\r |
913ef4b7 |
1000 | wrdprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
1001 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1002 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1003 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1004 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
913ef4b7 |
1005 | wrdprintf("ret = %08x", d);\r |
ab0607f7 |
1006 | goto end;\r |
1007 | }\r |
1008 | \r |
4f265db7 |
1009 | // PCM\r |
1010 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
1011 | dprintf("FIXME: s68k_pcm r32: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
1012 | a &= 0x7fff;\r |
1013 | if (a >= 0x2000) {\r |
1014 | a >>= 1;\r |
1015 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] << 16;\r |
1016 | d |= Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff];\r |
1017 | } else if (a >= 0x20) {\r |
1018 | a &= 0x1e;\r |
1019 | if (a & 2) {\r |
1020 | a >>= 2;\r |
1021 | d = (Pico_mcd->pcm.ch[a].addr >> (PCM_STEP_SHIFT-8)) & 0xff0000;\r |
1022 | d |= (Pico_mcd->pcm.ch[(a+1)&7].addr >> PCM_STEP_SHIFT) & 0xff;\r |
1023 | } else {\r |
1024 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
1025 | d = ((d<<16)&0xff0000) | ((d>>8)&0xff); // PCM chip is LE\r |
1026 | }\r |
1027 | }\r |
1028 | dprintf("ret = %08x", d);\r |
1029 | goto end;\r |
1030 | }\r |
1031 | \r |
ab0607f7 |
1032 | // bram\r |
1033 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
1034 | dprintf("FIXME: s68k_bram r32: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
1035 | a = (a>>1)&0x1fff;\r |
1036 | d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion..\r |
1037 | d|= Pico_mcd->bram[a++] << 24;\r |
1038 | d|= Pico_mcd->bram[a++];\r |
1039 | d|= Pico_mcd->bram[a++] << 8;\r |
1040 | dprintf("ret = %08x", d);\r |
d0d47c5b |
1041 | goto end;\r |
1042 | }\r |
1043 | \r |
cc68a136 |
1044 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1045 | \r |
1046 | end:\r |
1047 | \r |
1048 | #ifdef __debug_io2\r |
1049 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1050 | #endif\r |
1051 | return d;\r |
1052 | }\r |
4ff2d527 |
1053 | #endif\r |
cc68a136 |
1054 | \r |
ab0607f7 |
1055 | \r |
a4030801 |
1056 | #ifndef _ASM_CD_MEMORY_C\r |
0a051f55 |
1057 | /* check: jaguar xj 220 (draws entire world using decode) */\r |
1058 | static void decode_write8(u32 a, u8 d, int r3)\r |
1059 | {\r |
1060 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
1061 | u8 oldmask = (a&1) ? 0xf0 : 0x0f;\r |
1062 | \r |
0a051f55 |
1063 | r3 &= 0x18;\r |
1064 | d &= 0x0f;\r |
1065 | if (!(a&1)) d <<= 4;\r |
1066 | \r |
0a051f55 |
1067 | if (r3 == 8) {\r |
1068 | if ((!(*pd & (~oldmask))) && d) goto do_it;\r |
1069 | } else if (r3 > 8) {\r |
1070 | if (d) goto do_it;\r |
1071 | } else {\r |
1072 | goto do_it;\r |
1073 | }\r |
1074 | \r |
1075 | return;\r |
1076 | do_it:\r |
1077 | *pd = d | (*pd & oldmask);\r |
1078 | }\r |
1079 | \r |
1080 | \r |
1081 | static void decode_write16(u32 a, u16 d, int r3)\r |
1082 | {\r |
1083 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
1084 | \r |
1085 | //if ((a & 0x3ffff) < 0x28000) return;\r |
1086 | \r |
1087 | r3 &= 0x18;\r |
1088 | d &= 0x0f0f;\r |
1089 | d |= d >> 4;\r |
1090 | \r |
1091 | if (r3 == 8) {\r |
1092 | u8 dold = *pd;\r |
1093 | if (!(dold & 0xf0)) dold |= d & 0xf0;\r |
1094 | if (!(dold & 0x0f)) dold |= d & 0x0f;\r |
1095 | *pd = dold;\r |
1096 | } else if (r3 > 8) {\r |
1097 | u8 dold = *pd;\r |
1098 | if (!(d & 0xf0)) d |= dold & 0xf0;\r |
1099 | if (!(d & 0x0f)) d |= dold & 0x0f;\r |
1100 | *pd = d;\r |
1101 | } else {\r |
1102 | *pd = d;\r |
1103 | }\r |
0a051f55 |
1104 | }\r |
a4030801 |
1105 | #endif\r |
0a051f55 |
1106 | \r |
cc68a136 |
1107 | // -----------------------------------------------------------------\r |
1108 | \r |
4ff2d527 |
1109 | #ifdef _ASM_CD_MEMORY_C\r |
1110 | void PicoWriteS68k8(u32 a,u8 d);\r |
1111 | #else\r |
1112 | static void PicoWriteS68k8(u32 a,u8 d)\r |
cc68a136 |
1113 | {\r |
1114 | #ifdef __debug_io2\r |
1115 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1116 | #endif\r |
1117 | \r |
1118 | a&=0xffffff;\r |
1119 | \r |
1120 | // prg RAM\r |
1121 | if (a < 0x80000) {\r |
1122 | u8 *pm=(u8 *)(Pico_mcd->prg_ram+(a^1));\r |
1123 | *pm=d;\r |
1124 | return;\r |
1125 | }\r |
1126 | \r |
1127 | // regs\r |
1128 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1129 | a &= 0x1ff;\r |
1130 | rdprintf("s68k_regs w8: [%02x] %02x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1131 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1132 | gfx_cd_write16(a&~1, (d<<8)|d);\r |
cb4a513a |
1133 | else s68k_reg_write8(a,d);\r |
cc68a136 |
1134 | return;\r |
1135 | }\r |
1136 | \r |
d0d47c5b |
1137 | // word RAM (2M area)\r |
1138 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1139 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1140 | wrdprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1141 | if (r3 & 4) { // 1M decode mode?\r |
1142 | decode_write8(a, d, r3);\r |
d0d47c5b |
1143 | } else {\r |
1144 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1145 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
1146 | }\r |
1147 | return;\r |
1148 | }\r |
1149 | \r |
1150 | // word RAM (1M area)\r |
68cba51e |
1151 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
1152 | // Wing Commander tries to write here in wrong mode\r |
fa1e5e29 |
1153 | int bank;\r |
d0d47c5b |
1154 | if (d)\r |
913ef4b7 |
1155 | wrdprintf("s68k_wram1M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1156 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1157 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1158 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1159 | *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d;\r |
d0d47c5b |
1160 | return;\r |
1161 | }\r |
1162 | \r |
4f265db7 |
1163 | // PCM\r |
1164 | if ((a&0xff8000)==0xff0000) {\r |
1165 | a &= 0x7fff;\r |
1166 | if (a >= 0x2000)\r |
1167 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1168 | else if (a < 0x12)\r |
1169 | pcm_write(a>>1, d);\r |
1170 | return;\r |
1171 | }\r |
1172 | \r |
ab0607f7 |
1173 | // bram\r |
1174 | if ((a&0xff0000)==0xfe0000) {\r |
1175 | Pico_mcd->bram[(a>>1)&0x1fff] = d;\r |
1176 | SRam.changed = 1;\r |
1177 | return;\r |
1178 | }\r |
1179 | \r |
cc68a136 |
1180 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1181 | }\r |
4ff2d527 |
1182 | #endif\r |
cc68a136 |
1183 | \r |
ab0607f7 |
1184 | \r |
4ff2d527 |
1185 | #ifdef _ASM_CD_MEMORY_C\r |
1186 | void PicoWriteS68k16(u32 a,u16 d);\r |
1187 | #else\r |
1188 | static void PicoWriteS68k16(u32 a,u16 d)\r |
cc68a136 |
1189 | {\r |
1190 | #ifdef __debug_io2\r |
1191 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1192 | #endif\r |
1193 | \r |
1194 | a&=0xfffffe;\r |
1195 | \r |
1196 | // prg RAM\r |
1197 | if (a < 0x80000) {\r |
c008977e |
1198 | wrdprintf("s68k_prgram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
cc68a136 |
1199 | *(u16 *)(Pico_mcd->prg_ram+a)=d;\r |
1200 | return;\r |
1201 | }\r |
1202 | \r |
1203 | // regs\r |
1204 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1205 | a &= 0x1fe;\r |
1206 | rdprintf("s68k_regs w16: [%02x] %04x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1207 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1208 | gfx_cd_write16(a, d);\r |
cb4a513a |
1209 | else {\r |
1cd356a3 |
1210 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
1211 | Pico_mcd->s68k_regs[0xf] = d;\r |
4ff2d527 |
1212 | return;\r |
1cd356a3 |
1213 | }\r |
cb4a513a |
1214 | s68k_reg_write8(a, d>>8);\r |
1215 | s68k_reg_write8(a+1,d&0xff);\r |
1216 | }\r |
cc68a136 |
1217 | return;\r |
1218 | }\r |
1219 | \r |
d0d47c5b |
1220 | // word RAM (2M area)\r |
1221 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1222 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1223 | wrdprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1224 | if (r3 & 4) { // 1M decode mode?\r |
1225 | decode_write16(a, d, r3);\r |
d0d47c5b |
1226 | } else {\r |
1227 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1228 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
1229 | }\r |
1230 | return;\r |
1231 | }\r |
1232 | \r |
1233 | // word RAM (1M area)\r |
68cba51e |
1234 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1235 | int bank;\r |
d0d47c5b |
1236 | if (d)\r |
913ef4b7 |
1237 | wrdprintf("s68k_wram1M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1238 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1239 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1240 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1241 | *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d;\r |
d0d47c5b |
1242 | return;\r |
1243 | }\r |
1244 | \r |
4f265db7 |
1245 | // PCM\r |
1246 | if ((a&0xff8000)==0xff0000) {\r |
1247 | a &= 0x7fff;\r |
1248 | if (a >= 0x2000)\r |
1249 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1250 | else if (a < 0x12)\r |
1251 | pcm_write(a>>1, d & 0xff);\r |
1252 | return;\r |
1253 | }\r |
1254 | \r |
ab0607f7 |
1255 | // bram\r |
1256 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1257 | dprintf("s68k_bram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1258 | a = (a>>1)&0x1fff;\r |
1259 | Pico_mcd->bram[a++] = d; // Gens does little endian here, an so do we..\r |
1260 | Pico_mcd->bram[a++] = d >> 8;\r |
1261 | SRam.changed = 1;\r |
1262 | return;\r |
1263 | }\r |
1264 | \r |
cc68a136 |
1265 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1266 | }\r |
4ff2d527 |
1267 | #endif\r |
cc68a136 |
1268 | \r |
ab0607f7 |
1269 | \r |
4ff2d527 |
1270 | #ifdef _ASM_CD_MEMORY_C\r |
1271 | void PicoWriteS68k32(u32 a,u32 d);\r |
1272 | #else\r |
1273 | static void PicoWriteS68k32(u32 a,u32 d)\r |
cc68a136 |
1274 | {\r |
1275 | #ifdef __debug_io2\r |
1276 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1277 | #endif\r |
1278 | \r |
1279 | a&=0xfffffe;\r |
1280 | \r |
1281 | // prg RAM\r |
1282 | if (a < 0x80000) {\r |
1283 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
1284 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1285 | return;\r |
1286 | }\r |
1287 | \r |
1288 | // regs\r |
1289 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1290 | a &= 0x1fe;\r |
1291 | rdprintf("s68k_regs w32: [%02x] %08x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1292 | if (a >= 0x58 && a < 0x68) {\r |
48e8482f |
1293 | gfx_cd_write16(a, d>>16);\r |
1294 | gfx_cd_write16(a+2, d&0xffff);\r |
cb4a513a |
1295 | } else {\r |
1296 | s68k_reg_write8(a, d>>24);\r |
1297 | s68k_reg_write8(a+1,(d>>16)&0xff);\r |
1298 | s68k_reg_write8(a+2,(d>>8) &0xff);\r |
1299 | s68k_reg_write8(a+3, d &0xff);\r |
1300 | }\r |
cc68a136 |
1301 | return;\r |
1302 | }\r |
1303 | \r |
d0d47c5b |
1304 | // word RAM (2M area)\r |
1305 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1306 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1307 | wrdprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1308 | if (r3 & 4) { // 1M decode mode?\r |
1309 | decode_write16(a , d >> 16, r3);\r |
1310 | decode_write16(a+2, d , r3);\r |
d0d47c5b |
1311 | } else {\r |
1312 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1313 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
1314 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1315 | }\r |
1316 | return;\r |
1317 | }\r |
1318 | \r |
1319 | // word RAM (1M area)\r |
68cba51e |
1320 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1321 | int bank;\r |
1322 | u16 *pm;\r |
d0d47c5b |
1323 | if (d)\r |
913ef4b7 |
1324 | wrdprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1325 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1326 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1327 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1328 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1329 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
d0d47c5b |
1330 | return;\r |
1331 | }\r |
ab0607f7 |
1332 | \r |
4f265db7 |
1333 | // PCM\r |
1334 | if ((a&0xff8000)==0xff0000) {\r |
1335 | a &= 0x7fff;\r |
1336 | if (a >= 0x2000) {\r |
1337 | a >>= 1;\r |
1338 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] = (d >> 16);\r |
1339 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff] = d;\r |
1340 | } else if (a < 0x12) {\r |
1341 | a >>= 1;\r |
1342 | pcm_write(a, (d>>16) & 0xff);\r |
1343 | pcm_write(a+1, d & 0xff);\r |
1344 | }\r |
1345 | return;\r |
1346 | }\r |
1347 | \r |
ab0607f7 |
1348 | // bram\r |
1349 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1350 | dprintf("s68k_bram w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1351 | a = (a>>1)&0x1fff;\r |
1352 | Pico_mcd->bram[a++] = d >> 16; // middle endian? verify?\r |
1353 | Pico_mcd->bram[a++] = d >> 24;\r |
1354 | Pico_mcd->bram[a++] = d;\r |
1355 | Pico_mcd->bram[a++] = d >> 8;\r |
1356 | SRam.changed = 1;\r |
1357 | return;\r |
1358 | }\r |
1359 | \r |
cc68a136 |
1360 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1361 | }\r |
4ff2d527 |
1362 | #endif\r |
cc68a136 |
1363 | \r |
1364 | \r |
1365 | // -----------------------------------------------------------------\r |
1366 | \r |
b837b69b |
1367 | \r |
1368 | #if defined(EMU_C68K)\r |
1369 | static __inline int PicoMemBaseM68k(u32 pc)\r |
1370 | {\r |
fa1e5e29 |
1371 | if ((pc&0xe00000)==0xe00000)\r |
1372 | return (int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r |
b837b69b |
1373 | \r |
1374 | if (pc < 0x20000)\r |
fa1e5e29 |
1375 | return (int)Pico_mcd->bios; // Program Counter in BIOS\r |
1376 | \r |
1377 | if ((pc&0xfc0000)==0x200000)\r |
b837b69b |
1378 | {\r |
fa1e5e29 |
1379 | if (!(Pico_mcd->s68k_regs[3]&4))\r |
1380 | return (int)Pico_mcd->word_ram2M - 0x200000; // Program Counter in Word Ram\r |
1381 | if (pc < 0x220000) {\r |
1382 | int bank = (Pico_mcd->s68k_regs[3]&1);\r |
1383 | return (int)Pico_mcd->word_ram1M[bank] - 0x200000;\r |
1384 | }\r |
b837b69b |
1385 | }\r |
1386 | \r |
fa1e5e29 |
1387 | // Error - Program Counter is invalid\r |
1388 | dprintf("m68k FIXME: unhandled jump to %06x", pc);\r |
1389 | \r |
1390 | return (int)Pico_mcd->bios;\r |
b837b69b |
1391 | }\r |
1392 | \r |
1393 | \r |
1394 | static u32 PicoCheckPcM68k(u32 pc)\r |
1395 | {\r |
1396 | pc-=PicoCpu.membase; // Get real pc\r |
1397 | pc&=0xfffffe;\r |
1398 | \r |
1399 | PicoCpu.membase=PicoMemBaseM68k(pc);\r |
1400 | \r |
1401 | return PicoCpu.membase+pc;\r |
1402 | }\r |
1403 | \r |
1404 | \r |
1405 | static __inline int PicoMemBaseS68k(u32 pc)\r |
1406 | {\r |
fa1e5e29 |
1407 | if (pc < 0x80000) // PRG RAM\r |
1408 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1409 | \r |
fa1e5e29 |
1410 | if ((pc&0xfc0000)==0x080000) // WORD RAM 2M area (assume we are in the right mode..)\r |
1411 | return (int)Pico_mcd->word_ram2M - 0x080000;\r |
1412 | \r |
1413 | if ((pc&0xfe0000)==0x0c0000) { // word RAM 1M area\r |
1414 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1415 | return (int)Pico_mcd->word_ram1M[bank] - 0x0c0000;\r |
b837b69b |
1416 | }\r |
1417 | \r |
fa1e5e29 |
1418 | // Error - Program Counter is invalid\r |
1419 | dprintf("s68k FIXME: unhandled jump to %06x", pc);\r |
1420 | \r |
1421 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1422 | }\r |
1423 | \r |
1424 | \r |
1425 | static u32 PicoCheckPcS68k(u32 pc)\r |
1426 | {\r |
1427 | pc-=PicoCpuS68k.membase; // Get real pc\r |
1428 | pc&=0xfffffe;\r |
1429 | \r |
1430 | PicoCpuS68k.membase=PicoMemBaseS68k(pc);\r |
1431 | \r |
1432 | return PicoCpuS68k.membase+pc;\r |
1433 | }\r |
1434 | #endif\r |
1435 | \r |
1436 | \r |
1437 | void PicoMemSetupCD()\r |
1438 | {\r |
1439 | dprintf("PicoMemSetupCD()");\r |
1440 | #ifdef EMU_C68K\r |
1441 | // Setup m68k memory callbacks:\r |
1442 | PicoCpu.checkpc=PicoCheckPcM68k;\r |
1443 | PicoCpu.fetch8 =PicoCpu.read8 =PicoReadM68k8;\r |
1444 | PicoCpu.fetch16=PicoCpu.read16=PicoReadM68k16;\r |
1445 | PicoCpu.fetch32=PicoCpu.read32=PicoReadM68k32;\r |
1446 | PicoCpu.write8 =PicoWriteM68k8;\r |
1447 | PicoCpu.write16=PicoWriteM68k16;\r |
1448 | PicoCpu.write32=PicoWriteM68k32;\r |
1449 | // s68k\r |
1450 | PicoCpuS68k.checkpc=PicoCheckPcS68k;\r |
1451 | PicoCpuS68k.fetch8 =PicoCpuS68k.read8 =PicoReadS68k8;\r |
1452 | PicoCpuS68k.fetch16=PicoCpuS68k.read16=PicoReadS68k16;\r |
1453 | PicoCpuS68k.fetch32=PicoCpuS68k.read32=PicoReadS68k32;\r |
1454 | PicoCpuS68k.write8 =PicoWriteS68k8;\r |
1455 | PicoCpuS68k.write16=PicoWriteS68k16;\r |
1456 | PicoCpuS68k.write32=PicoWriteS68k32;\r |
1457 | #endif\r |
7a1f6e45 |
1458 | // m68k_poll_addr = m68k_poll_cnt = 0;\r |
1459 | s68k_poll_adclk = s68k_poll_cnt = 0;\r |
b837b69b |
1460 | }\r |
1461 | \r |
1462 | \r |
cc68a136 |
1463 | #ifdef EMU_M68K\r |
1464 | unsigned char PicoReadCD8w (unsigned int a) {\r |
1465 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k8(a) : PicoReadM68k8(a);\r |
1466 | }\r |
1467 | unsigned short PicoReadCD16w(unsigned int a) {\r |
1468 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k16(a) : PicoReadM68k16(a);\r |
1469 | }\r |
1470 | unsigned int PicoReadCD32w(unsigned int a) {\r |
1471 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k32(a) : PicoReadM68k32(a);\r |
1472 | }\r |
1473 | void PicoWriteCD8w (unsigned int a, unsigned char d) {\r |
1474 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);\r |
1475 | }\r |
1476 | void PicoWriteCD16w(unsigned int a, unsigned short d) {\r |
1477 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);\r |
1478 | }\r |
1479 | void PicoWriteCD32w(unsigned int a, unsigned int d) {\r |
1480 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);\r |
1481 | }\r |
1482 | \r |
1483 | // these are allowed to access RAM\r |
1484 | unsigned int m68k_read_pcrelative_CD8 (unsigned int a) {\r |
1485 | a&=0xffffff;\r |
1486 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1487 | if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram\r |
fa1e5e29 |
1488 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1489 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1490 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1491 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1492 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1493 | }\r |
1494 | dprintf("s68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1495 | } else {\r |
cc68a136 |
1496 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
fa1e5e29 |
1497 | if(a<0x20000) return *(u8 *)(Pico.rom+(a^1)); // Bios\r |
1498 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1499 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1500 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1501 | else if (a < 0x220000) {\r |
1502 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1503 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1504 | }\r |
1505 | }\r |
1506 | dprintf("m68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1507 | }\r |
1508 | return 0;//(u8) lastread_d;\r |
1509 | }\r |
1510 | unsigned int m68k_read_pcrelative_CD16(unsigned int a) {\r |
1511 | a&=0xffffff;\r |
1512 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1513 | if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram\r |
fa1e5e29 |
1514 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1515 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1516 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1517 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1518 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1519 | }\r |
1520 | dprintf("s68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1521 | } else {\r |
cc68a136 |
1522 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
fa1e5e29 |
1523 | if(a<0x20000) return *(u16 *)(Pico.rom+(a&~1)); // Bios\r |
1524 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1525 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1526 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1527 | else if (a < 0x220000) {\r |
1528 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1529 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1530 | }\r |
1531 | }\r |
1532 | dprintf("m68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1533 | }\r |
b837b69b |
1534 | return 0;\r |
cc68a136 |
1535 | }\r |
1536 | unsigned int m68k_read_pcrelative_CD32(unsigned int a) {\r |
fa1e5e29 |
1537 | u16 *pm;\r |
cc68a136 |
1538 | a&=0xffffff;\r |
1539 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1540 | if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram\r |
fa1e5e29 |
1541 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1542 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1543 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1544 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1545 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1546 | return (pm[0]<<16)|pm[1];\r |
1547 | }\r |
1548 | dprintf("s68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1549 | } else {\r |
cc68a136 |
1550 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
fa1e5e29 |
1551 | if(a<0x20000) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
1552 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1553 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1554 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1555 | else if (a < 0x220000) {\r |
1556 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1557 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1558 | return (pm[0]<<16)|pm[1];\r |
1559 | }\r |
1560 | }\r |
1561 | dprintf("m68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1562 | }\r |
b837b69b |
1563 | return 0;\r |
cc68a136 |
1564 | }\r |
1565 | #endif // EMU_M68K\r |
1566 | \r |