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 |
2433f409 |
33 | //#define plprintf dprintf\r |
34 | #define plprintf(...)\r |
cc68a136 |
35 | \r |
36 | // -----------------------------------------------------------------\r |
37 | \r |
7a1f6e45 |
38 | // poller detection\r |
2433f409 |
39 | //#undef USE_POLL_DETECT\r |
7a1f6e45 |
40 | #define POLL_LIMIT 16\r |
41 | #define POLL_CYCLES 124\r |
42 | // int m68k_poll_addr, m68k_poll_cnt;\r |
43 | unsigned int s68k_poll_adclk, s68k_poll_cnt;\r |
cc68a136 |
44 | \r |
4ff2d527 |
45 | #ifndef _ASM_CD_MEMORY_C\r |
cb4a513a |
46 | static u32 m68k_reg_read16(u32 a)\r |
cc68a136 |
47 | {\r |
48 | u32 d=0;\r |
49 | a &= 0x3e;\r |
672ad671 |
50 | // dprintf("m68k_regs r%2i: [%02x] @%06x", realsize&~1, a+(realsize&1), SekPc);\r |
cc68a136 |
51 | \r |
52 | switch (a) {\r |
672ad671 |
53 | case 0:\r |
c459aefd |
54 | d = ((Pico_mcd->s68k_regs[0x33]<<13)&0x8000) | Pico_mcd->m.busreq; // here IFL2 is always 0, just like in Gens\r |
672ad671 |
55 | goto end;\r |
cc68a136 |
56 | case 2:\r |
672ad671 |
57 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0xc7);\r |
c008977e |
58 | // the DMNA delay must only be visible on s68k side (Lunar2, Silpheed)\r |
59 | if (Pico_mcd->m.state_flags&2) { d &= ~1; d |= 2; }\r |
60 | //printf("m68k_regs r3: %02x @%06x\n", (u8)d, SekPc);\r |
cc68a136 |
61 | goto end;\r |
c459aefd |
62 | case 4:\r |
63 | d = Pico_mcd->s68k_regs[4]<<8;\r |
64 | goto end;\r |
65 | case 6:\r |
913ef4b7 |
66 | d = *(u16 *)(Pico_mcd->bios + 0x72);\r |
c459aefd |
67 | goto end;\r |
cc68a136 |
68 | case 8:\r |
cc68a136 |
69 | d = Read_CDC_Host(0);\r |
70 | goto end;\r |
c459aefd |
71 | case 0xA:\r |
fa1e5e29 |
72 | dprintf("m68k FIXME: reserved read");\r |
c459aefd |
73 | goto end;\r |
cc68a136 |
74 | case 0xC:\r |
1cd356a3 |
75 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
76 | dprintf("m68k stopwatch timer read (%04x)", d);\r |
1cd356a3 |
77 | goto end;\r |
cc68a136 |
78 | }\r |
79 | \r |
cc68a136 |
80 | if (a < 0x30) {\r |
81 | // comm flag/cmd/status (0xE-0x2F)\r |
82 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
83 | goto end;\r |
84 | }\r |
85 | \r |
fa1e5e29 |
86 | dprintf("m68k_regs FIXME invalid read @ %02x", a);\r |
cc68a136 |
87 | \r |
88 | end:\r |
89 | \r |
672ad671 |
90 | // dprintf("ret = %04x", d);\r |
cc68a136 |
91 | return d;\r |
92 | }\r |
4ff2d527 |
93 | #endif\r |
cc68a136 |
94 | \r |
4ff2d527 |
95 | #ifndef _ASM_CD_MEMORY_C\r |
96 | static\r |
97 | #endif\r |
98 | void m68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
99 | {\r |
100 | a &= 0x3f;\r |
672ad671 |
101 | // dprintf("m68k_regs w%2i: [%02x] %02x @%06x", realsize, a, d, SekPc);\r |
cc68a136 |
102 | \r |
103 | switch (a) {\r |
104 | case 0:\r |
672ad671 |
105 | d &= 1;\r |
cc68a136 |
106 | if ((d&1) && (Pico_mcd->s68k_regs[0x33]&(1<<2))) { dprintf("m68k: s68k irq 2"); SekInterruptS68k(2); }\r |
c459aefd |
107 | return;\r |
cc68a136 |
108 | case 1:\r |
672ad671 |
109 | d &= 3;\r |
51a902ae |
110 | if (!(d&1)) Pico_mcd->m.state_flags |= 1; // reset pending, needed to be sure we fetch the right vectors on reset\r |
c459aefd |
111 | if ( (Pico_mcd->m.busreq&1) != (d&1)) dprintf("m68k: s68k reset %i", !(d&1));\r |
112 | if ( (Pico_mcd->m.busreq&2) != (d&2)) dprintf("m68k: s68k brq %i", (d&2)>>1);\r |
51a902ae |
113 | if ((Pico_mcd->m.state_flags&1) && (d&3)==1) {\r |
cc68a136 |
114 | SekResetS68k(); // S68k comes out of RESET or BRQ state\r |
4ff2d527 |
115 | Pico_mcd->m.state_flags&=~1;\r |
116 | dprintf("m68k: resetting s68k, cycles=%i", SekCyclesLeft);\r |
cc68a136 |
117 | }\r |
c459aefd |
118 | Pico_mcd->m.busreq = d;\r |
119 | return;\r |
672ad671 |
120 | case 2:\r |
121 | Pico_mcd->s68k_regs[2] = d; // really use s68k side register\r |
122 | return;\r |
66fdc0f0 |
123 | case 3: {\r |
124 | u32 dold = Pico_mcd->s68k_regs[3]&0x1f;\r |
c008977e |
125 | //printf("m68k_regs w3: %02x @%06x\n", (u8)d, SekPc);\r |
672ad671 |
126 | d &= 0xc2;\r |
66fdc0f0 |
127 | if ((dold>>6) != ((d>>6)&3))\r |
672ad671 |
128 | dprintf("m68k: prg bank: %i -> %i", (Pico_mcd->s68k_regs[a]>>6), ((d>>6)&3));\r |
129 | //if ((Pico_mcd->s68k_regs[3]&4) != (d&4)) dprintf("m68k: ram mode %i mbit", (d&4) ? 1 : 2);\r |
130 | //if ((Pico_mcd->s68k_regs[3]&2) != (d&2)) dprintf("m68k: %s", (d&4) ? ((d&2) ? "word swap req" : "noop?") :\r |
131 | // ((d&2) ? "word ram to s68k" : "word ram to m68k"));\r |
66fdc0f0 |
132 | if (dold & 4) {\r |
133 | d ^= 2; // writing 0 to DMNA actually sets it, 1 does nothing\r |
134 | } else {\r |
135 | //dold &= ~2; // ??\r |
89fa852d |
136 | #if 1\r |
137 | if ((d & 2) && !(dold & 2)) {\r |
138 | Pico_mcd->m.state_flags |= 2; // we must delay setting DMNA bit (needed for Silpheed)\r |
139 | d &= ~2;\r |
140 | }\r |
141 | #else\r |
66fdc0f0 |
142 | if (d & 2) dold &= ~1; // return word RAM to s68k in 2M mode\r |
89fa852d |
143 | #endif\r |
66fdc0f0 |
144 | }\r |
145 | Pico_mcd->s68k_regs[3] = d | dold; // really use s68k side register\r |
7a1f6e45 |
146 | #ifdef USE_POLL_DETECT\r |
147 | if ((s68k_poll_adclk&0xfe) == 2 && s68k_poll_cnt > POLL_LIMIT) {\r |
148 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
2433f409 |
149 | plprintf("s68k poll release, a=%02x\n", a);\r |
7a1f6e45 |
150 | }\r |
151 | #endif\r |
672ad671 |
152 | return;\r |
66fdc0f0 |
153 | }\r |
c459aefd |
154 | case 6:\r |
d1df8786 |
155 | Pico_mcd->bios[0x72 + 1] = d; // simple hint vector changer\r |
c459aefd |
156 | return;\r |
157 | case 7:\r |
d1df8786 |
158 | Pico_mcd->bios[0x72] = d;\r |
913ef4b7 |
159 | dprintf("hint vector set to %08x", PicoRead32(0x70));\r |
c459aefd |
160 | return;\r |
7a1f6e45 |
161 | case 0xf:\r |
162 | d = (d << 1) | ((d >> 7) & 1); // rol8 1 (special case)\r |
cc68a136 |
163 | case 0xe:\r |
672ad671 |
164 | //dprintf("m68k: comm flag: %02x", d);\r |
cc68a136 |
165 | Pico_mcd->s68k_regs[0xe] = d;\r |
7a1f6e45 |
166 | #ifdef USE_POLL_DETECT\r |
167 | if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) {\r |
168 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
2433f409 |
169 | plprintf("s68k poll release, a=%02x\n", a);\r |
7a1f6e45 |
170 | }\r |
171 | #endif\r |
c459aefd |
172 | return;\r |
672ad671 |
173 | }\r |
174 | \r |
175 | if ((a&0xf0) == 0x10) {\r |
cc68a136 |
176 | Pico_mcd->s68k_regs[a] = d;\r |
7a1f6e45 |
177 | #ifdef USE_POLL_DETECT\r |
178 | if ((a&0xfe) == (s68k_poll_adclk&0xfe) && s68k_poll_cnt > POLL_LIMIT) {\r |
179 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
2433f409 |
180 | plprintf("s68k poll release, a=%02x\n", a);\r |
7a1f6e45 |
181 | }\r |
182 | #endif\r |
672ad671 |
183 | return;\r |
cc68a136 |
184 | }\r |
185 | \r |
fa1e5e29 |
186 | dprintf("m68k FIXME: invalid write? [%02x] %02x", a, d);\r |
cc68a136 |
187 | }\r |
188 | \r |
2433f409 |
189 | #ifndef _ASM_CD_MEMORY_C\r |
190 | static\r |
191 | #endif\r |
192 | u32 s68k_poll_detect(u32 a, u32 d)\r |
193 | {\r |
194 | #ifdef USE_POLL_DETECT\r |
195 | // polling detection\r |
196 | if (a == (s68k_poll_adclk&0xff)) {\r |
197 | unsigned int clkdiff = SekCyclesDoneS68k() - (s68k_poll_adclk>>8);\r |
198 | if (clkdiff <= POLL_CYCLES) {\r |
199 | s68k_poll_cnt++;\r |
200 | //printf("-- diff: %u, cnt = %i\n", clkdiff, s68k_poll_cnt);\r |
201 | if (s68k_poll_cnt > POLL_LIMIT) {\r |
202 | SekSetStopS68k(1);\r |
203 | plprintf("s68k poll detected @ %06x, a=%02x\n", SekPcS68k, a);\r |
204 | }\r |
205 | s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a;\r |
206 | return d;\r |
207 | }\r |
208 | }\r |
209 | s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a;\r |
210 | s68k_poll_cnt = 0;\r |
211 | #endif\r |
212 | return d;\r |
213 | }\r |
cc68a136 |
214 | \r |
913ef4b7 |
215 | #define READ_FONT_DATA(basemask) \\r |
216 | { \\r |
217 | unsigned int fnt = *(unsigned int *)(Pico_mcd->s68k_regs + 0x4c); \\r |
218 | unsigned int col0 = (fnt >> 8) & 0x0f, col1 = (fnt >> 12) & 0x0f; \\r |
219 | if (fnt & (basemask << 0)) d = col1 ; else d = col0; \\r |
220 | if (fnt & (basemask << 1)) d |= col1 << 4; else d |= col0 << 4; \\r |
221 | if (fnt & (basemask << 2)) d |= col1 << 8; else d |= col0 << 8; \\r |
222 | if (fnt & (basemask << 3)) d |= col1 << 12; else d |= col0 << 12; \\r |
223 | }\r |
224 | \r |
cc68a136 |
225 | \r |
4ff2d527 |
226 | #ifndef _ASM_CD_MEMORY_C\r |
227 | static\r |
228 | #endif\r |
229 | u32 s68k_reg_read16(u32 a)\r |
cc68a136 |
230 | {\r |
231 | u32 d=0;\r |
cc68a136 |
232 | \r |
672ad671 |
233 | // dprintf("s68k_regs r%2i: [%02x] @ %06x", realsize&~1, a+(realsize&1), SekPcS68k);\r |
cc68a136 |
234 | \r |
235 | switch (a) {\r |
236 | case 0:\r |
7a1f6e45 |
237 | return ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state\r |
672ad671 |
238 | case 2:\r |
2433f409 |
239 | d = (Pico_mcd->s68k_regs[2]<<8) | (Pico_mcd->s68k_regs[3]&0x1f);\r |
c008977e |
240 | //printf("s68k_regs r3: %02x @%06x\n", (u8)d, SekPcS68k);\r |
2433f409 |
241 | return s68k_poll_detect(a, d);\r |
cc68a136 |
242 | case 6:\r |
7a1f6e45 |
243 | return CDC_Read_Reg();\r |
cc68a136 |
244 | case 8:\r |
7a1f6e45 |
245 | return Read_CDC_Host(1); // Gens returns 0 here on byte reads\r |
cc68a136 |
246 | case 0xC:\r |
4f265db7 |
247 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
248 | dprintf("s68k stopwatch timer read (%04x)", d);\r |
7a1f6e45 |
249 | return d;\r |
d1df8786 |
250 | case 0x30:\r |
7a1f6e45 |
251 | dprintf("s68k int3 timer read (%02x)", Pico_mcd->s68k_regs[31]);\r |
252 | return Pico_mcd->s68k_regs[31];\r |
cc68a136 |
253 | case 0x34: // fader\r |
7a1f6e45 |
254 | return 0; // no busy bit\r |
913ef4b7 |
255 | case 0x50: // font data (check: Lunar 2, Silpheed)\r |
256 | READ_FONT_DATA(0x00100000);\r |
7a1f6e45 |
257 | return d;\r |
913ef4b7 |
258 | case 0x52:\r |
259 | READ_FONT_DATA(0x00010000);\r |
7a1f6e45 |
260 | return d;\r |
913ef4b7 |
261 | case 0x54:\r |
262 | READ_FONT_DATA(0x10000000);\r |
7a1f6e45 |
263 | return d;\r |
913ef4b7 |
264 | case 0x56:\r |
265 | READ_FONT_DATA(0x01000000);\r |
7a1f6e45 |
266 | return d;\r |
cc68a136 |
267 | }\r |
268 | \r |
269 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
270 | \r |
2433f409 |
271 | if (a >= 0x0e && a < 0x30)\r |
272 | return s68k_poll_detect(a, d);\r |
7a1f6e45 |
273 | \r |
cc68a136 |
274 | return d;\r |
275 | }\r |
276 | \r |
4ff2d527 |
277 | #ifndef _ASM_CD_MEMORY_C\r |
278 | static\r |
279 | #endif\r |
280 | void s68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
281 | {\r |
672ad671 |
282 | //dprintf("s68k_regs w%2i: [%02x] %02x @ %06x", realsize, a, d, SekPcS68k);\r |
cc68a136 |
283 | \r |
284 | // TODO: review against Gens\r |
48e8482f |
285 | // Warning: d might have upper bits set\r |
cc68a136 |
286 | switch (a) {\r |
672ad671 |
287 | case 2:\r |
288 | return; // only m68k can change WP\r |
fa1e5e29 |
289 | case 3: {\r |
290 | int dold = Pico_mcd->s68k_regs[3];\r |
c008977e |
291 | //printf("s68k_regs w3: %02x @%06x\n", (u8)d, SekPcS68k);\r |
672ad671 |
292 | d &= 0x1d;\r |
4ff2d527 |
293 | d |= dold&0xc2;\r |
d0d47c5b |
294 | if (d&4) {\r |
4ff2d527 |
295 | if ((d ^ dold) & 5) {\r |
296 | d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit\r |
297 | #ifdef _ASM_CD_MEMORY_C\r |
298 | PicoMemResetCD(d);\r |
299 | #endif\r |
300 | }\r |
48e8482f |
301 | #ifdef _ASM_CD_MEMORY_C\r |
302 | if ((d ^ dold) & 0x1d)\r |
303 | PicoMemResetCDdecode(d);\r |
304 | #endif\r |
fa1e5e29 |
305 | if (!(dold & 4)) {\r |
306 | dprintf("wram mode 2M->1M");\r |
307 | wram_2M_to_1M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
308 | }\r |
d0d47c5b |
309 | } else {\r |
fa1e5e29 |
310 | if (dold & 4) {\r |
311 | dprintf("wram mode 1M->2M");\r |
4ff2d527 |
312 | if (!(d&1)) { // it didn't set the ret bit, which means it doesn't want to give WRAM to m68k\r |
313 | d &= ~3;\r |
314 | d |= (dold&1) ? 2 : 1; // then give it to the one which had bank0 in 1M mode\r |
315 | }\r |
fa1e5e29 |
316 | wram_1M_to_2M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
317 | #ifdef _ASM_CD_MEMORY_C\r |
318 | PicoMemResetCD(d);\r |
319 | #endif\r |
320 | }\r |
321 | else\r |
322 | d |= dold&1;\r |
323 | if (d&1) d &= ~2; // return word RAM to m68k in 2M mode\r |
d0d47c5b |
324 | }\r |
672ad671 |
325 | break;\r |
fa1e5e29 |
326 | }\r |
cc68a136 |
327 | case 4:\r |
328 | dprintf("s68k CDC dest: %x", d&7);\r |
329 | Pico_mcd->s68k_regs[4] = (Pico_mcd->s68k_regs[4]&0xC0) | (d&7); // CDC mode\r |
330 | return;\r |
331 | case 5:\r |
c459aefd |
332 | //dprintf("s68k CDC reg addr: %x", d&0xf);\r |
cc68a136 |
333 | break;\r |
334 | case 7:\r |
335 | CDC_Write_Reg(d);\r |
336 | return;\r |
337 | case 0xa:\r |
338 | dprintf("s68k set CDC dma addr");\r |
339 | break;\r |
d1df8786 |
340 | case 0xc:\r |
4f265db7 |
341 | case 0xd:\r |
d1df8786 |
342 | dprintf("s68k set stopwatch timer");\r |
4f265db7 |
343 | Pico_mcd->m.timer_stopwatch = 0;\r |
344 | return;\r |
1cd356a3 |
345 | case 0xe:\r |
7a1f6e45 |
346 | Pico_mcd->s68k_regs[0xf] = (d>>1) | (d<<7); // ror8 1, Gens note: Dragons lair\r |
1cd356a3 |
347 | return;\r |
d1df8786 |
348 | case 0x31:\r |
4f265db7 |
349 | dprintf("s68k set int3 timer: %02x", d);\r |
48e8482f |
350 | Pico_mcd->m.timer_int3 = (d & 0xff) << 16;\r |
d1df8786 |
351 | break;\r |
cc68a136 |
352 | case 0x33: // IRQ mask\r |
353 | dprintf("s68k irq mask: %02x", d);\r |
354 | if ((d&(1<<4)) && (Pico_mcd->s68k_regs[0x37]&4) && !(Pico_mcd->s68k_regs[0x33]&(1<<4))) {\r |
355 | CDD_Export_Status();\r |
cc68a136 |
356 | }\r |
357 | break;\r |
358 | case 0x34: // fader\r |
359 | Pico_mcd->s68k_regs[a] = (u8) d & 0x7f;\r |
360 | return;\r |
672ad671 |
361 | case 0x36:\r |
362 | return; // d/m bit is unsetable\r |
363 | case 0x37: {\r |
364 | u32 d_old = Pico_mcd->s68k_regs[0x37];\r |
365 | Pico_mcd->s68k_regs[0x37] = d&7;\r |
366 | if ((d&4) && !(d_old&4)) {\r |
cc68a136 |
367 | CDD_Export_Status();\r |
cc68a136 |
368 | }\r |
672ad671 |
369 | return;\r |
370 | }\r |
cc68a136 |
371 | case 0x4b:\r |
372 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
373 | CDD_Import_Command();\r |
374 | return;\r |
375 | }\r |
376 | \r |
1cd356a3 |
377 | if ((a&0x1f0) == 0x10 || (a >= 0x38 && a < 0x42))\r |
cc68a136 |
378 | {\r |
fa1e5e29 |
379 | dprintf("s68k FIXME: invalid write @ %02x?", a);\r |
cc68a136 |
380 | return;\r |
381 | }\r |
382 | \r |
383 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
384 | }\r |
385 | \r |
386 | \r |
4ff2d527 |
387 | #ifndef _ASM_CD_MEMORY_C\r |
fa1e5e29 |
388 | static u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
389 | {\r |
390 | u32 d=0;\r |
391 | \r |
672ad671 |
392 | if ((a&0xffffc0)==0xa12000) {\r |
cb4a513a |
393 | d=m68k_reg_read16(a);\r |
672ad671 |
394 | goto end;\r |
395 | }\r |
cc68a136 |
396 | \r |
fa1e5e29 |
397 | dprintf("m68k FIXME: unusual r%i: %06x @%06x", realsize&~1, (a&0xfffffe)+(realsize&1), SekPc);\r |
cc68a136 |
398 | \r |
399 | end:\r |
400 | return d;\r |
401 | }\r |
402 | \r |
cc68a136 |
403 | \r |
fa1e5e29 |
404 | static void OtherWrite8End(u32 a, u32 d, int realsize)\r |
cc68a136 |
405 | {\r |
cb4a513a |
406 | if ((a&0xffffc0)==0xa12000) { m68k_reg_write8(a, d); return; }\r |
cc68a136 |
407 | \r |
fa1e5e29 |
408 | dprintf("m68k FIXME: strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
409 | }\r |
410 | \r |
cc68a136 |
411 | \r |
fa1e5e29 |
412 | #undef _ASM_MEMORY_C\r |
413 | #include "../MemoryCmn.c"\r |
4ff2d527 |
414 | #include "cell_map.c"\r |
415 | #endif // !def _ASM_CD_MEMORY_C\r |
cc68a136 |
416 | \r |
2433f409 |
417 | \r |
cc68a136 |
418 | // -----------------------------------------------------------------\r |
419 | // Read Rom and read Ram\r |
420 | \r |
4ff2d527 |
421 | //u8 PicoReadM68k8_(u32 a);\r |
422 | #ifdef _ASM_CD_MEMORY_C\r |
423 | u8 PicoReadM68k8(u32 a);\r |
424 | #else\r |
425 | static u8 PicoReadM68k8(u32 a)\r |
cc68a136 |
426 | {\r |
427 | u32 d=0;\r |
428 | \r |
429 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
430 | \r |
431 | a&=0xffffff;\r |
432 | \r |
433 | if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios\r |
434 | \r |
435 | // prg RAM\r |
4ff2d527 |
436 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
437 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
438 | d = *(prg_bank+((a^1)&0x1ffff));\r |
439 | goto end;\r |
440 | }\r |
441 | \r |
d0d47c5b |
442 | // word RAM\r |
443 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
444 | wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
445 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
446 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
447 | if (a >= 0x220000)\r |
448 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
449 | else a &= 0x1ffff;\r |
450 | d = Pico_mcd->word_ram1M[bank][a^1];\r |
d0d47c5b |
451 | } else {\r |
452 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
453 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
454 | }\r |
913ef4b7 |
455 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
456 | goto end;\r |
457 | }\r |
458 | \r |
cc68a136 |
459 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
460 | \r |
c459aefd |
461 | if ((a&0xffffc0)==0xa12000)\r |
462 | rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
463 | \r |
cc68a136 |
464 | d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r |
465 | \r |
c459aefd |
466 | if ((a&0xffffc0)==0xa12000)\r |
467 | rdprintf("ret = %02x", (u8)d);\r |
672ad671 |
468 | \r |
cc68a136 |
469 | end:\r |
470 | \r |
471 | #ifdef __debug_io\r |
472 | dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
473 | #endif\r |
474 | return (u8)d;\r |
475 | }\r |
4ff2d527 |
476 | #endif\r |
cc68a136 |
477 | \r |
ab0607f7 |
478 | \r |
4ff2d527 |
479 | #ifdef _ASM_CD_MEMORY_C\r |
480 | u16 PicoReadM68k16(u32 a);\r |
481 | #else\r |
482 | static u16 PicoReadM68k16(u32 a)\r |
cc68a136 |
483 | {\r |
484 | u16 d=0;\r |
485 | \r |
486 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
487 | \r |
488 | a&=0xfffffe;\r |
489 | \r |
490 | if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios\r |
491 | \r |
492 | // prg RAM\r |
4ff2d527 |
493 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
494 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
c008977e |
495 | wrdprintf("m68k_prgram r16: [%i,%06x] @%06x", Pico_mcd->s68k_regs[3]>>6, a, SekPc);\r |
cc68a136 |
496 | d = *(u16 *)(prg_bank+(a&0x1fffe));\r |
c008977e |
497 | wrdprintf("ret = %04x", d);\r |
cc68a136 |
498 | goto end;\r |
499 | }\r |
500 | \r |
d0d47c5b |
501 | // word RAM\r |
502 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
503 | wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
504 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
505 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
506 | if (a >= 0x220000)\r |
507 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
508 | else a &= 0x1fffe;\r |
509 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
d0d47c5b |
510 | } else {\r |
511 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
512 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
513 | }\r |
913ef4b7 |
514 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
515 | goto end;\r |
516 | }\r |
517 | \r |
c459aefd |
518 | if ((a&0xffffc0)==0xa12000)\r |
519 | rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
520 | \r |
cc68a136 |
521 | d = (u16)OtherRead16(a, 16);\r |
522 | \r |
c459aefd |
523 | if ((a&0xffffc0)==0xa12000)\r |
524 | rdprintf("ret = %04x", d);\r |
672ad671 |
525 | \r |
cc68a136 |
526 | end:\r |
527 | \r |
528 | #ifdef __debug_io\r |
529 | dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
530 | #endif\r |
531 | return d;\r |
532 | }\r |
4ff2d527 |
533 | #endif\r |
cc68a136 |
534 | \r |
ab0607f7 |
535 | \r |
4ff2d527 |
536 | #ifdef _ASM_CD_MEMORY_C\r |
537 | u32 PicoReadM68k32(u32 a);\r |
538 | #else\r |
539 | static u32 PicoReadM68k32(u32 a)\r |
cc68a136 |
540 | {\r |
541 | u32 d=0;\r |
542 | \r |
543 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
544 | \r |
545 | a&=0xfffffe;\r |
546 | \r |
547 | if (a < 0x20000) { u16 *pm=(u16 *)(Pico_mcd->bios+a); d = (pm[0]<<16)|pm[1]; goto end; } // bios\r |
548 | \r |
549 | // prg RAM\r |
4ff2d527 |
550 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
551 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
552 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
553 | d = (pm[0]<<16)|pm[1];\r |
554 | goto end;\r |
555 | }\r |
556 | \r |
d0d47c5b |
557 | // word RAM\r |
558 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
559 | wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
560 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
561 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
562 | if (a >= 0x220000) { // cell arranged\r |
563 | u32 a1, a2;\r |
564 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
565 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
566 | else a2 = a1 + 2;\r |
567 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16;\r |
568 | d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2);\r |
bf098bc5 |
569 | } else {\r |
fa1e5e29 |
570 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
bf098bc5 |
571 | }\r |
d0d47c5b |
572 | } else {\r |
573 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
574 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
575 | }\r |
913ef4b7 |
576 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
577 | goto end;\r |
578 | }\r |
579 | \r |
c459aefd |
580 | if ((a&0xffffc0)==0xa12000)\r |
581 | rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
582 | \r |
cc68a136 |
583 | d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
584 | \r |
c459aefd |
585 | if ((a&0xffffc0)==0xa12000)\r |
586 | rdprintf("ret = %08x", d);\r |
672ad671 |
587 | \r |
cc68a136 |
588 | end:\r |
589 | #ifdef __debug_io\r |
590 | dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
591 | #endif\r |
592 | return d;\r |
593 | }\r |
4ff2d527 |
594 | #endif\r |
cc68a136 |
595 | \r |
ab0607f7 |
596 | \r |
cc68a136 |
597 | // -----------------------------------------------------------------\r |
598 | // Write Ram\r |
599 | \r |
4ff2d527 |
600 | #ifdef _ASM_CD_MEMORY_C\r |
601 | void PicoWriteM68k8(u32 a,u8 d);\r |
602 | #else\r |
603 | static void PicoWriteM68k8(u32 a,u8 d)\r |
cc68a136 |
604 | {\r |
605 | #ifdef __debug_io\r |
606 | dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
607 | #endif\r |
608 | //if ((a&0xe0ffff)==0xe0a9ba+0x69c)\r |
609 | // dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
610 | \r |
611 | \r |
ab0607f7 |
612 | if ((a&0xe00000)==0xe00000) { // Ram\r |
613 | *(u8 *)(Pico.ram+((a^1)&0xffff)) = d;\r |
614 | return;\r |
615 | }\r |
cc68a136 |
616 | \r |
617 | a&=0xffffff;\r |
618 | \r |
619 | // prg RAM\r |
4ff2d527 |
620 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
621 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
bf098bc5 |
622 | *(u8 *)(prg_bank+((a^1)&0x1ffff))=d;\r |
cc68a136 |
623 | return;\r |
624 | }\r |
625 | \r |
d0d47c5b |
626 | // word RAM\r |
627 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
628 | wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc);\r |
d0d47c5b |
629 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
630 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
631 | if (a >= 0x220000)\r |
632 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
633 | else a &= 0x1ffff;\r |
634 | *(u8 *)(Pico_mcd->word_ram1M[bank]+(a^1))=d;\r |
d0d47c5b |
635 | } else {\r |
636 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
637 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
638 | }\r |
639 | return;\r |
640 | }\r |
641 | \r |
2433f409 |
642 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
643 | rdprintf("m68k_regs w8: [%02x] %02x @%06x", a&0x3f, d, SekPc);\r |
2433f409 |
644 | m68k_reg_write8(a, d);\r |
645 | return;\r |
646 | }\r |
672ad671 |
647 | \r |
cc68a136 |
648 | OtherWrite8(a,d,8);\r |
649 | }\r |
4ff2d527 |
650 | #endif\r |
cc68a136 |
651 | \r |
ab0607f7 |
652 | \r |
4ff2d527 |
653 | #ifdef _ASM_CD_MEMORY_C\r |
654 | void PicoWriteM68k16(u32 a,u16 d);\r |
655 | #else\r |
656 | static void PicoWriteM68k16(u32 a,u16 d)\r |
cc68a136 |
657 | {\r |
658 | #ifdef __debug_io\r |
659 | dprintf("w16: %06x, %04x", a&0xffffff, d);\r |
660 | #endif\r |
cc68a136 |
661 | // dprintf("w16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
662 | \r |
ab0607f7 |
663 | if ((a&0xe00000)==0xe00000) { // Ram\r |
664 | *(u16 *)(Pico.ram+(a&0xfffe))=d;\r |
665 | return;\r |
666 | }\r |
cc68a136 |
667 | \r |
668 | a&=0xfffffe;\r |
669 | \r |
670 | // prg RAM\r |
4ff2d527 |
671 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
672 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
c008977e |
673 | wrdprintf("m68k_prgram w16: [%i,%06x] %04x @%06x", Pico_mcd->s68k_regs[3]>>6, a, d, SekPc);\r |
cc68a136 |
674 | *(u16 *)(prg_bank+(a&0x1fffe))=d;\r |
675 | return;\r |
676 | }\r |
677 | \r |
d0d47c5b |
678 | // word RAM\r |
679 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
680 | wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc);\r |
d0d47c5b |
681 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
682 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
683 | if (a >= 0x220000)\r |
684 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
685 | else a &= 0x1fffe;\r |
686 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a)=d;\r |
d0d47c5b |
687 | } else {\r |
688 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
689 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
690 | }\r |
691 | return;\r |
692 | }\r |
693 | \r |
7a1f6e45 |
694 | // regs\r |
695 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
696 | rdprintf("m68k_regs w16: [%02x] %04x @%06x", a&0x3f, d, SekPc);\r |
7a1f6e45 |
697 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
698 | Pico_mcd->s68k_regs[0xe] = d >> 8;\r |
699 | #ifdef USE_POLL_DETECT\r |
700 | if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) {\r |
701 | SekSetStopS68k(0); s68k_poll_adclk = -1;\r |
2433f409 |
702 | plprintf("s68k poll release, a=%02x\n", a);\r |
7a1f6e45 |
703 | }\r |
704 | #endif\r |
705 | return;\r |
706 | }\r |
707 | m68k_reg_write8(a, d>>8);\r |
708 | m68k_reg_write8(a+1,d&0xff);\r |
709 | return;\r |
710 | }\r |
cc68a136 |
711 | \r |
712 | OtherWrite16(a,d);\r |
713 | }\r |
4ff2d527 |
714 | #endif\r |
cc68a136 |
715 | \r |
ab0607f7 |
716 | \r |
4ff2d527 |
717 | #ifdef _ASM_CD_MEMORY_C\r |
718 | void PicoWriteM68k32(u32 a,u32 d);\r |
719 | #else\r |
720 | static void PicoWriteM68k32(u32 a,u32 d)\r |
cc68a136 |
721 | {\r |
722 | #ifdef __debug_io\r |
723 | dprintf("w32: %06x, %08x", a&0xffffff, d);\r |
724 | #endif\r |
725 | \r |
726 | if ((a&0xe00000)==0xe00000)\r |
727 | {\r |
728 | // Ram:\r |
729 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
730 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
731 | return;\r |
732 | }\r |
733 | \r |
734 | a&=0xfffffe;\r |
735 | \r |
736 | // prg RAM\r |
4ff2d527 |
737 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {\r |
672ad671 |
738 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
739 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
740 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
741 | return;\r |
742 | }\r |
743 | \r |
672ad671 |
744 | // word RAM\r |
d0d47c5b |
745 | if ((a&0xfc0000)==0x200000) {\r |
746 | if (d != 0) // don't log clears\r |
913ef4b7 |
747 | wrdprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc);\r |
d0d47c5b |
748 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
749 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
750 | if (a >= 0x220000) { // cell arranged\r |
751 | u32 a1, a2;\r |
752 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
753 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
754 | else a2 = a1 + 2;\r |
755 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16;\r |
756 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d;\r |
bf098bc5 |
757 | } else {\r |
fa1e5e29 |
758 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
759 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
bf098bc5 |
760 | }\r |
d0d47c5b |
761 | } else {\r |
762 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
763 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
764 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
765 | }\r |
672ad671 |
766 | return;\r |
d0d47c5b |
767 | }\r |
672ad671 |
768 | \r |
2433f409 |
769 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
770 | rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);\r |
2433f409 |
771 | if ((a&0x3e) == 0xe) dprintf("m68k FIXME: w32 [%02x]", a&0x3f);\r |
772 | }\r |
cc68a136 |
773 | \r |
774 | OtherWrite16(a, (u16)(d>>16));\r |
775 | OtherWrite16(a+2,(u16)d);\r |
776 | }\r |
4ff2d527 |
777 | #endif\r |
cc68a136 |
778 | \r |
779 | \r |
780 | // -----------------------------------------------------------------\r |
781 | \r |
4ff2d527 |
782 | #ifdef _ASM_CD_MEMORY_C\r |
783 | u8 PicoReadS68k8(u32 a);\r |
784 | #else\r |
785 | static u8 PicoReadS68k8(u32 a)\r |
cc68a136 |
786 | {\r |
787 | u32 d=0;\r |
788 | \r |
789 | a&=0xffffff;\r |
790 | \r |
791 | // prg RAM\r |
792 | if (a < 0x80000) {\r |
793 | d = *(Pico_mcd->prg_ram+(a^1));\r |
794 | goto end;\r |
795 | }\r |
796 | \r |
797 | // regs\r |
798 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
799 | a &= 0x1ff;\r |
800 | rdprintf("s68k_regs r8: [%02x] @ %06x", a, SekPcS68k);\r |
2433f409 |
801 | if (a >= 0x0e && a < 0x30) {\r |
802 | d = Pico_mcd->s68k_regs[a];\r |
803 | s68k_poll_detect(a, d);\r |
804 | rdprintf("ret = %02x", (u8)d);\r |
805 | goto end;\r |
806 | }\r |
807 | else if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
808 | d = gfx_cd_read(a&~1);\r |
809 | else d = s68k_reg_read16(a&~1);\r |
810 | if ((a&1)==0) d>>=8;\r |
c459aefd |
811 | rdprintf("ret = %02x", (u8)d);\r |
cc68a136 |
812 | goto end;\r |
813 | }\r |
814 | \r |
d0d47c5b |
815 | // word RAM (2M area)\r |
816 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
fa1e5e29 |
817 | // test: batman returns\r |
913ef4b7 |
818 | wrdprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
819 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
820 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
821 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
822 | if (a&1) d &= 0x0f;\r |
823 | else d >>= 4;\r |
824 | dprintf("FIXME: decode");\r |
d0d47c5b |
825 | } else {\r |
826 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
827 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
828 | }\r |
913ef4b7 |
829 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
830 | goto end;\r |
831 | }\r |
832 | \r |
833 | // word RAM (1M area)\r |
68cba51e |
834 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
835 | int bank;\r |
913ef4b7 |
836 | wrdprintf("s68k_wram1M r8: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
837 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
838 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
839 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
840 | d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff];\r |
913ef4b7 |
841 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
842 | goto end;\r |
843 | }\r |
844 | \r |
4f265db7 |
845 | // PCM\r |
846 | if ((a&0xff8000)==0xff0000) {\r |
1cd356a3 |
847 | dprintf("s68k_pcm r8: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
848 | a &= 0x7fff;\r |
849 | if (a >= 0x2000)\r |
850 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
851 | else if (a >= 0x20) {\r |
852 | a &= 0x1e;\r |
853 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
854 | if (a & 2) d >>= 8;\r |
855 | }\r |
856 | dprintf("ret = %02x", (u8)d);\r |
857 | goto end;\r |
858 | }\r |
859 | \r |
ab0607f7 |
860 | // bram\r |
861 | if ((a&0xff0000)==0xfe0000) {\r |
862 | d = Pico_mcd->bram[(a>>1)&0x1fff];\r |
863 | goto end;\r |
864 | }\r |
865 | \r |
cc68a136 |
866 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
867 | \r |
868 | end:\r |
869 | \r |
870 | #ifdef __debug_io2\r |
871 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
872 | #endif\r |
873 | return (u8)d;\r |
874 | }\r |
4ff2d527 |
875 | #endif\r |
cc68a136 |
876 | \r |
ab0607f7 |
877 | \r |
4ff2d527 |
878 | //u16 PicoReadS68k16_(u32 a);\r |
879 | #ifdef _ASM_CD_MEMORY_C\r |
880 | u16 PicoReadS68k16(u32 a);\r |
881 | #else\r |
882 | static u16 PicoReadS68k16(u32 a)\r |
cc68a136 |
883 | {\r |
4f265db7 |
884 | u32 d=0;\r |
cc68a136 |
885 | \r |
886 | a&=0xfffffe;\r |
887 | \r |
888 | // prg RAM\r |
889 | if (a < 0x80000) {\r |
c008977e |
890 | wrdprintf("s68k_prgram r16: [%06x] @%06x", a, SekPcS68k);\r |
cc68a136 |
891 | d = *(u16 *)(Pico_mcd->prg_ram+a);\r |
c008977e |
892 | wrdprintf("ret = %04x", d);\r |
cc68a136 |
893 | goto end;\r |
894 | }\r |
895 | \r |
896 | // regs\r |
897 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
898 | a &= 0x1fe;\r |
899 | rdprintf("s68k_regs r16: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
900 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
901 | d = gfx_cd_read(a);\r |
902 | else d = s68k_reg_read16(a);\r |
c459aefd |
903 | rdprintf("ret = %04x", d);\r |
cc68a136 |
904 | goto end;\r |
905 | }\r |
906 | \r |
d0d47c5b |
907 | // word RAM (2M area)\r |
908 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
909 | wrdprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
910 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
911 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
912 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
913 | d |= d << 4; d &= ~0xf0;\r |
914 | dprintf("FIXME: decode");\r |
d0d47c5b |
915 | } else {\r |
916 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
917 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
918 | }\r |
913ef4b7 |
919 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
920 | goto end;\r |
921 | }\r |
922 | \r |
923 | // word RAM (1M area)\r |
68cba51e |
924 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
925 | int bank;\r |
913ef4b7 |
926 | wrdprintf("s68k_wram1M r16: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
927 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
928 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
929 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
930 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
913ef4b7 |
931 | wrdprintf("ret = %04x", d);\r |
ab0607f7 |
932 | goto end;\r |
933 | }\r |
934 | \r |
935 | // bram\r |
936 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
937 | dprintf("FIXME: s68k_bram r16: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
938 | a = (a>>1)&0x1fff;\r |
4f265db7 |
939 | d = Pico_mcd->bram[a++]; // Gens does little endian here, and so do we..\r |
4ff2d527 |
940 | d|= Pico_mcd->bram[a++] << 8; // This is most likely wrong\r |
ab0607f7 |
941 | dprintf("ret = %04x", d);\r |
d0d47c5b |
942 | goto end;\r |
943 | }\r |
944 | \r |
4f265db7 |
945 | // PCM\r |
946 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
947 | dprintf("FIXME: s68k_pcm r16: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
948 | a &= 0x7fff;\r |
949 | if (a >= 0x2000)\r |
950 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
951 | else if (a >= 0x20) {\r |
952 | a &= 0x1e;\r |
953 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
954 | if (a & 2) d >>= 8;\r |
955 | }\r |
956 | dprintf("ret = %04x", d);\r |
957 | goto end;\r |
958 | }\r |
959 | \r |
cc68a136 |
960 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
961 | \r |
962 | end:\r |
963 | \r |
964 | #ifdef __debug_io2\r |
965 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
966 | #endif\r |
967 | return d;\r |
968 | }\r |
4ff2d527 |
969 | #endif\r |
cc68a136 |
970 | \r |
ab0607f7 |
971 | \r |
4ff2d527 |
972 | #ifdef _ASM_CD_MEMORY_C\r |
973 | u32 PicoReadS68k32(u32 a);\r |
974 | #else\r |
975 | static u32 PicoReadS68k32(u32 a)\r |
cc68a136 |
976 | {\r |
977 | u32 d=0;\r |
978 | \r |
979 | a&=0xfffffe;\r |
980 | \r |
981 | // prg RAM\r |
982 | if (a < 0x80000) {\r |
983 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
984 | d = (pm[0]<<16)|pm[1];\r |
985 | goto end;\r |
986 | }\r |
987 | \r |
988 | // regs\r |
989 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
990 | a &= 0x1fe;\r |
991 | rdprintf("s68k_regs r32: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
992 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
993 | d = (gfx_cd_read(a)<<16)|gfx_cd_read(a+2);\r |
994 | else d = (s68k_reg_read16(a)<<16)|s68k_reg_read16(a+2);\r |
c459aefd |
995 | rdprintf("ret = %08x", d);\r |
cc68a136 |
996 | goto end;\r |
997 | }\r |
998 | \r |
d0d47c5b |
999 | // word RAM (2M area)\r |
1000 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
1001 | wrdprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
1002 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
1003 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1004 | a >>= 1;\r |
1005 | d = Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] << 16;\r |
1006 | d |= Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff];\r |
1007 | d |= d << 4; d &= 0x0f0f0f0f;\r |
d0d47c5b |
1008 | } else {\r |
1009 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1010 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
1011 | }\r |
913ef4b7 |
1012 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
1013 | goto end;\r |
1014 | }\r |
1015 | \r |
1016 | // word RAM (1M area)\r |
68cba51e |
1017 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1018 | int bank;\r |
913ef4b7 |
1019 | wrdprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
1020 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1021 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1022 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1023 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
913ef4b7 |
1024 | wrdprintf("ret = %08x", d);\r |
ab0607f7 |
1025 | goto end;\r |
1026 | }\r |
1027 | \r |
4f265db7 |
1028 | // PCM\r |
1029 | if ((a&0xff8000)==0xff0000) {\r |
2433f409 |
1030 | dprintf("s68k_pcm r32: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
1031 | a &= 0x7fff;\r |
1032 | if (a >= 0x2000) {\r |
1033 | a >>= 1;\r |
1034 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] << 16;\r |
1035 | d |= Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff];\r |
1036 | } else if (a >= 0x20) {\r |
1037 | a &= 0x1e;\r |
1038 | if (a & 2) {\r |
1039 | a >>= 2;\r |
1040 | d = (Pico_mcd->pcm.ch[a].addr >> (PCM_STEP_SHIFT-8)) & 0xff0000;\r |
1041 | d |= (Pico_mcd->pcm.ch[(a+1)&7].addr >> PCM_STEP_SHIFT) & 0xff;\r |
1042 | } else {\r |
1043 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
1044 | d = ((d<<16)&0xff0000) | ((d>>8)&0xff); // PCM chip is LE\r |
1045 | }\r |
1046 | }\r |
1047 | dprintf("ret = %08x", d);\r |
1048 | goto end;\r |
1049 | }\r |
1050 | \r |
ab0607f7 |
1051 | // bram\r |
1052 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
1053 | dprintf("FIXME: s68k_bram r32: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
1054 | a = (a>>1)&0x1fff;\r |
1055 | d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion..\r |
1056 | d|= Pico_mcd->bram[a++] << 24;\r |
1057 | d|= Pico_mcd->bram[a++];\r |
1058 | d|= Pico_mcd->bram[a++] << 8;\r |
1059 | dprintf("ret = %08x", d);\r |
d0d47c5b |
1060 | goto end;\r |
1061 | }\r |
1062 | \r |
cc68a136 |
1063 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1064 | \r |
1065 | end:\r |
1066 | \r |
1067 | #ifdef __debug_io2\r |
1068 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1069 | #endif\r |
1070 | return d;\r |
1071 | }\r |
4ff2d527 |
1072 | #endif\r |
cc68a136 |
1073 | \r |
ab0607f7 |
1074 | \r |
a4030801 |
1075 | #ifndef _ASM_CD_MEMORY_C\r |
0a051f55 |
1076 | /* check: jaguar xj 220 (draws entire world using decode) */\r |
1077 | static void decode_write8(u32 a, u8 d, int r3)\r |
1078 | {\r |
1079 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
1080 | u8 oldmask = (a&1) ? 0xf0 : 0x0f;\r |
1081 | \r |
0a051f55 |
1082 | r3 &= 0x18;\r |
1083 | d &= 0x0f;\r |
1084 | if (!(a&1)) d <<= 4;\r |
1085 | \r |
0a051f55 |
1086 | if (r3 == 8) {\r |
1087 | if ((!(*pd & (~oldmask))) && d) goto do_it;\r |
1088 | } else if (r3 > 8) {\r |
1089 | if (d) goto do_it;\r |
1090 | } else {\r |
1091 | goto do_it;\r |
1092 | }\r |
1093 | \r |
1094 | return;\r |
1095 | do_it:\r |
1096 | *pd = d | (*pd & oldmask);\r |
1097 | }\r |
1098 | \r |
1099 | \r |
1100 | static void decode_write16(u32 a, u16 d, int r3)\r |
1101 | {\r |
1102 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
1103 | \r |
1104 | //if ((a & 0x3ffff) < 0x28000) return;\r |
1105 | \r |
1106 | r3 &= 0x18;\r |
1107 | d &= 0x0f0f;\r |
1108 | d |= d >> 4;\r |
1109 | \r |
1110 | if (r3 == 8) {\r |
1111 | u8 dold = *pd;\r |
1112 | if (!(dold & 0xf0)) dold |= d & 0xf0;\r |
1113 | if (!(dold & 0x0f)) dold |= d & 0x0f;\r |
1114 | *pd = dold;\r |
1115 | } else if (r3 > 8) {\r |
1116 | u8 dold = *pd;\r |
1117 | if (!(d & 0xf0)) d |= dold & 0xf0;\r |
1118 | if (!(d & 0x0f)) d |= dold & 0x0f;\r |
1119 | *pd = d;\r |
1120 | } else {\r |
1121 | *pd = d;\r |
1122 | }\r |
0a051f55 |
1123 | }\r |
a4030801 |
1124 | #endif\r |
0a051f55 |
1125 | \r |
cc68a136 |
1126 | // -----------------------------------------------------------------\r |
1127 | \r |
4ff2d527 |
1128 | #ifdef _ASM_CD_MEMORY_C\r |
1129 | void PicoWriteS68k8(u32 a,u8 d);\r |
1130 | #else\r |
1131 | static void PicoWriteS68k8(u32 a,u8 d)\r |
cc68a136 |
1132 | {\r |
1133 | #ifdef __debug_io2\r |
1134 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1135 | #endif\r |
1136 | \r |
1137 | a&=0xffffff;\r |
1138 | \r |
1139 | // prg RAM\r |
1140 | if (a < 0x80000) {\r |
1141 | u8 *pm=(u8 *)(Pico_mcd->prg_ram+(a^1));\r |
1142 | *pm=d;\r |
1143 | return;\r |
1144 | }\r |
1145 | \r |
1146 | // regs\r |
1147 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1148 | a &= 0x1ff;\r |
1149 | rdprintf("s68k_regs w8: [%02x] %02x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1150 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1151 | gfx_cd_write16(a&~1, (d<<8)|d);\r |
cb4a513a |
1152 | else s68k_reg_write8(a,d);\r |
cc68a136 |
1153 | return;\r |
1154 | }\r |
1155 | \r |
d0d47c5b |
1156 | // word RAM (2M area)\r |
1157 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1158 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1159 | wrdprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1160 | if (r3 & 4) { // 1M decode mode?\r |
1161 | decode_write8(a, d, r3);\r |
d0d47c5b |
1162 | } else {\r |
1163 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1164 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
1165 | }\r |
1166 | return;\r |
1167 | }\r |
1168 | \r |
1169 | // word RAM (1M area)\r |
68cba51e |
1170 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
1171 | // Wing Commander tries to write here in wrong mode\r |
fa1e5e29 |
1172 | int bank;\r |
d0d47c5b |
1173 | if (d)\r |
913ef4b7 |
1174 | wrdprintf("s68k_wram1M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1175 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1176 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1177 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1178 | *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d;\r |
d0d47c5b |
1179 | return;\r |
1180 | }\r |
1181 | \r |
4f265db7 |
1182 | // PCM\r |
1183 | if ((a&0xff8000)==0xff0000) {\r |
1184 | a &= 0x7fff;\r |
1185 | if (a >= 0x2000)\r |
1186 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1187 | else if (a < 0x12)\r |
1188 | pcm_write(a>>1, d);\r |
1189 | return;\r |
1190 | }\r |
1191 | \r |
ab0607f7 |
1192 | // bram\r |
1193 | if ((a&0xff0000)==0xfe0000) {\r |
1194 | Pico_mcd->bram[(a>>1)&0x1fff] = d;\r |
1195 | SRam.changed = 1;\r |
1196 | return;\r |
1197 | }\r |
1198 | \r |
cc68a136 |
1199 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1200 | }\r |
4ff2d527 |
1201 | #endif\r |
cc68a136 |
1202 | \r |
ab0607f7 |
1203 | \r |
4ff2d527 |
1204 | #ifdef _ASM_CD_MEMORY_C\r |
1205 | void PicoWriteS68k16(u32 a,u16 d);\r |
1206 | #else\r |
1207 | static void PicoWriteS68k16(u32 a,u16 d)\r |
cc68a136 |
1208 | {\r |
1209 | #ifdef __debug_io2\r |
1210 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1211 | #endif\r |
1212 | \r |
1213 | a&=0xfffffe;\r |
1214 | \r |
1215 | // prg RAM\r |
1216 | if (a < 0x80000) {\r |
c008977e |
1217 | wrdprintf("s68k_prgram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
cc68a136 |
1218 | *(u16 *)(Pico_mcd->prg_ram+a)=d;\r |
1219 | return;\r |
1220 | }\r |
1221 | \r |
1222 | // regs\r |
1223 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1224 | a &= 0x1fe;\r |
1225 | rdprintf("s68k_regs w16: [%02x] %04x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1226 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1227 | gfx_cd_write16(a, d);\r |
cb4a513a |
1228 | else {\r |
1cd356a3 |
1229 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
1230 | Pico_mcd->s68k_regs[0xf] = d;\r |
4ff2d527 |
1231 | return;\r |
1cd356a3 |
1232 | }\r |
cb4a513a |
1233 | s68k_reg_write8(a, d>>8);\r |
1234 | s68k_reg_write8(a+1,d&0xff);\r |
1235 | }\r |
cc68a136 |
1236 | return;\r |
1237 | }\r |
1238 | \r |
d0d47c5b |
1239 | // word RAM (2M area)\r |
1240 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1241 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1242 | wrdprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1243 | if (r3 & 4) { // 1M decode mode?\r |
1244 | decode_write16(a, d, r3);\r |
d0d47c5b |
1245 | } else {\r |
1246 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1247 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
1248 | }\r |
1249 | return;\r |
1250 | }\r |
1251 | \r |
1252 | // word RAM (1M area)\r |
68cba51e |
1253 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1254 | int bank;\r |
d0d47c5b |
1255 | if (d)\r |
913ef4b7 |
1256 | wrdprintf("s68k_wram1M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1257 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1258 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1259 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1260 | *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d;\r |
d0d47c5b |
1261 | return;\r |
1262 | }\r |
1263 | \r |
4f265db7 |
1264 | // PCM\r |
1265 | if ((a&0xff8000)==0xff0000) {\r |
1266 | a &= 0x7fff;\r |
1267 | if (a >= 0x2000)\r |
1268 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1269 | else if (a < 0x12)\r |
1270 | pcm_write(a>>1, d & 0xff);\r |
1271 | return;\r |
1272 | }\r |
1273 | \r |
ab0607f7 |
1274 | // bram\r |
1275 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1276 | dprintf("s68k_bram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1277 | a = (a>>1)&0x1fff;\r |
1278 | Pico_mcd->bram[a++] = d; // Gens does little endian here, an so do we..\r |
1279 | Pico_mcd->bram[a++] = d >> 8;\r |
1280 | SRam.changed = 1;\r |
1281 | return;\r |
1282 | }\r |
1283 | \r |
cc68a136 |
1284 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1285 | }\r |
4ff2d527 |
1286 | #endif\r |
cc68a136 |
1287 | \r |
ab0607f7 |
1288 | \r |
4ff2d527 |
1289 | #ifdef _ASM_CD_MEMORY_C\r |
1290 | void PicoWriteS68k32(u32 a,u32 d);\r |
1291 | #else\r |
1292 | static void PicoWriteS68k32(u32 a,u32 d)\r |
cc68a136 |
1293 | {\r |
1294 | #ifdef __debug_io2\r |
1295 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1296 | #endif\r |
1297 | \r |
1298 | a&=0xfffffe;\r |
1299 | \r |
1300 | // prg RAM\r |
1301 | if (a < 0x80000) {\r |
1302 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
1303 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1304 | return;\r |
1305 | }\r |
1306 | \r |
1307 | // regs\r |
1308 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1309 | a &= 0x1fe;\r |
1310 | rdprintf("s68k_regs w32: [%02x] %08x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1311 | if (a >= 0x58 && a < 0x68) {\r |
48e8482f |
1312 | gfx_cd_write16(a, d>>16);\r |
1313 | gfx_cd_write16(a+2, d&0xffff);\r |
cb4a513a |
1314 | } else {\r |
2433f409 |
1315 | if ((a&0x1fe) == 0xe) dprintf("s68k FIXME: w32 [%02x]", a&0x3f);\r |
cb4a513a |
1316 | s68k_reg_write8(a, d>>24);\r |
1317 | s68k_reg_write8(a+1,(d>>16)&0xff);\r |
1318 | s68k_reg_write8(a+2,(d>>8) &0xff);\r |
1319 | s68k_reg_write8(a+3, d &0xff);\r |
1320 | }\r |
cc68a136 |
1321 | return;\r |
1322 | }\r |
1323 | \r |
d0d47c5b |
1324 | // word RAM (2M area)\r |
1325 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1326 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1327 | wrdprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1328 | if (r3 & 4) { // 1M decode mode?\r |
1329 | decode_write16(a , d >> 16, r3);\r |
1330 | decode_write16(a+2, d , r3);\r |
d0d47c5b |
1331 | } else {\r |
1332 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1333 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
1334 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1335 | }\r |
1336 | return;\r |
1337 | }\r |
1338 | \r |
1339 | // word RAM (1M area)\r |
68cba51e |
1340 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1341 | int bank;\r |
1342 | u16 *pm;\r |
d0d47c5b |
1343 | if (d)\r |
913ef4b7 |
1344 | wrdprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1345 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1346 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
fa1e5e29 |
1347 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1348 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1349 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
d0d47c5b |
1350 | return;\r |
1351 | }\r |
ab0607f7 |
1352 | \r |
4f265db7 |
1353 | // PCM\r |
1354 | if ((a&0xff8000)==0xff0000) {\r |
1355 | a &= 0x7fff;\r |
1356 | if (a >= 0x2000) {\r |
1357 | a >>= 1;\r |
1358 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] = (d >> 16);\r |
1359 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff] = d;\r |
1360 | } else if (a < 0x12) {\r |
1361 | a >>= 1;\r |
1362 | pcm_write(a, (d>>16) & 0xff);\r |
1363 | pcm_write(a+1, d & 0xff);\r |
1364 | }\r |
1365 | return;\r |
1366 | }\r |
1367 | \r |
ab0607f7 |
1368 | // bram\r |
1369 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1370 | dprintf("s68k_bram w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1371 | a = (a>>1)&0x1fff;\r |
1372 | Pico_mcd->bram[a++] = d >> 16; // middle endian? verify?\r |
1373 | Pico_mcd->bram[a++] = d >> 24;\r |
1374 | Pico_mcd->bram[a++] = d;\r |
1375 | Pico_mcd->bram[a++] = d >> 8;\r |
1376 | SRam.changed = 1;\r |
1377 | return;\r |
1378 | }\r |
1379 | \r |
cc68a136 |
1380 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1381 | }\r |
4ff2d527 |
1382 | #endif\r |
cc68a136 |
1383 | \r |
1384 | \r |
1385 | // -----------------------------------------------------------------\r |
1386 | \r |
b837b69b |
1387 | \r |
1388 | #if defined(EMU_C68K)\r |
1389 | static __inline int PicoMemBaseM68k(u32 pc)\r |
1390 | {\r |
fa1e5e29 |
1391 | if ((pc&0xe00000)==0xe00000)\r |
1392 | return (int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r |
b837b69b |
1393 | \r |
1394 | if (pc < 0x20000)\r |
fa1e5e29 |
1395 | return (int)Pico_mcd->bios; // Program Counter in BIOS\r |
1396 | \r |
1397 | if ((pc&0xfc0000)==0x200000)\r |
b837b69b |
1398 | {\r |
fa1e5e29 |
1399 | if (!(Pico_mcd->s68k_regs[3]&4))\r |
1400 | return (int)Pico_mcd->word_ram2M - 0x200000; // Program Counter in Word Ram\r |
1401 | if (pc < 0x220000) {\r |
1402 | int bank = (Pico_mcd->s68k_regs[3]&1);\r |
1403 | return (int)Pico_mcd->word_ram1M[bank] - 0x200000;\r |
1404 | }\r |
b837b69b |
1405 | }\r |
1406 | \r |
fa1e5e29 |
1407 | // Error - Program Counter is invalid\r |
1408 | dprintf("m68k FIXME: unhandled jump to %06x", pc);\r |
1409 | \r |
1410 | return (int)Pico_mcd->bios;\r |
b837b69b |
1411 | }\r |
1412 | \r |
1413 | \r |
1414 | static u32 PicoCheckPcM68k(u32 pc)\r |
1415 | {\r |
1416 | pc-=PicoCpu.membase; // Get real pc\r |
1417 | pc&=0xfffffe;\r |
1418 | \r |
1419 | PicoCpu.membase=PicoMemBaseM68k(pc);\r |
1420 | \r |
1421 | return PicoCpu.membase+pc;\r |
1422 | }\r |
1423 | \r |
1424 | \r |
1425 | static __inline int PicoMemBaseS68k(u32 pc)\r |
1426 | {\r |
fa1e5e29 |
1427 | if (pc < 0x80000) // PRG RAM\r |
1428 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1429 | \r |
fa1e5e29 |
1430 | if ((pc&0xfc0000)==0x080000) // WORD RAM 2M area (assume we are in the right mode..)\r |
1431 | return (int)Pico_mcd->word_ram2M - 0x080000;\r |
1432 | \r |
1433 | if ((pc&0xfe0000)==0x0c0000) { // word RAM 1M area\r |
1434 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1435 | return (int)Pico_mcd->word_ram1M[bank] - 0x0c0000;\r |
b837b69b |
1436 | }\r |
1437 | \r |
fa1e5e29 |
1438 | // Error - Program Counter is invalid\r |
1439 | dprintf("s68k FIXME: unhandled jump to %06x", pc);\r |
1440 | \r |
1441 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1442 | }\r |
1443 | \r |
1444 | \r |
1445 | static u32 PicoCheckPcS68k(u32 pc)\r |
1446 | {\r |
1447 | pc-=PicoCpuS68k.membase; // Get real pc\r |
1448 | pc&=0xfffffe;\r |
1449 | \r |
1450 | PicoCpuS68k.membase=PicoMemBaseS68k(pc);\r |
1451 | \r |
1452 | return PicoCpuS68k.membase+pc;\r |
1453 | }\r |
1454 | #endif\r |
1455 | \r |
1456 | \r |
1457 | void PicoMemSetupCD()\r |
1458 | {\r |
1459 | dprintf("PicoMemSetupCD()");\r |
1460 | #ifdef EMU_C68K\r |
1461 | // Setup m68k memory callbacks:\r |
1462 | PicoCpu.checkpc=PicoCheckPcM68k;\r |
1463 | PicoCpu.fetch8 =PicoCpu.read8 =PicoReadM68k8;\r |
1464 | PicoCpu.fetch16=PicoCpu.read16=PicoReadM68k16;\r |
1465 | PicoCpu.fetch32=PicoCpu.read32=PicoReadM68k32;\r |
1466 | PicoCpu.write8 =PicoWriteM68k8;\r |
1467 | PicoCpu.write16=PicoWriteM68k16;\r |
1468 | PicoCpu.write32=PicoWriteM68k32;\r |
1469 | // s68k\r |
1470 | PicoCpuS68k.checkpc=PicoCheckPcS68k;\r |
1471 | PicoCpuS68k.fetch8 =PicoCpuS68k.read8 =PicoReadS68k8;\r |
1472 | PicoCpuS68k.fetch16=PicoCpuS68k.read16=PicoReadS68k16;\r |
1473 | PicoCpuS68k.fetch32=PicoCpuS68k.read32=PicoReadS68k32;\r |
1474 | PicoCpuS68k.write8 =PicoWriteS68k8;\r |
1475 | PicoCpuS68k.write16=PicoWriteS68k16;\r |
1476 | PicoCpuS68k.write32=PicoWriteS68k32;\r |
1477 | #endif\r |
7a1f6e45 |
1478 | // m68k_poll_addr = m68k_poll_cnt = 0;\r |
1479 | s68k_poll_adclk = s68k_poll_cnt = 0;\r |
b837b69b |
1480 | }\r |
1481 | \r |
1482 | \r |
cc68a136 |
1483 | #ifdef EMU_M68K\r |
1484 | unsigned char PicoReadCD8w (unsigned int a) {\r |
1485 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k8(a) : PicoReadM68k8(a);\r |
1486 | }\r |
1487 | unsigned short PicoReadCD16w(unsigned int a) {\r |
1488 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k16(a) : PicoReadM68k16(a);\r |
1489 | }\r |
1490 | unsigned int PicoReadCD32w(unsigned int a) {\r |
1491 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k32(a) : PicoReadM68k32(a);\r |
1492 | }\r |
1493 | void PicoWriteCD8w (unsigned int a, unsigned char d) {\r |
1494 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);\r |
1495 | }\r |
1496 | void PicoWriteCD16w(unsigned int a, unsigned short d) {\r |
1497 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);\r |
1498 | }\r |
1499 | void PicoWriteCD32w(unsigned int a, unsigned int d) {\r |
1500 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);\r |
1501 | }\r |
1502 | \r |
1503 | // these are allowed to access RAM\r |
1504 | unsigned int m68k_read_pcrelative_CD8 (unsigned int a) {\r |
1505 | a&=0xffffff;\r |
1506 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1507 | if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram\r |
fa1e5e29 |
1508 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1509 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1510 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1511 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1512 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1513 | }\r |
1514 | dprintf("s68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1515 | } else {\r |
cc68a136 |
1516 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
fa1e5e29 |
1517 | if(a<0x20000) return *(u8 *)(Pico.rom+(a^1)); // Bios\r |
1518 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1519 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1520 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1521 | else if (a < 0x220000) {\r |
1522 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1523 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1524 | }\r |
1525 | }\r |
1526 | dprintf("m68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1527 | }\r |
1528 | return 0;//(u8) lastread_d;\r |
1529 | }\r |
1530 | unsigned int m68k_read_pcrelative_CD16(unsigned int a) {\r |
1531 | a&=0xffffff;\r |
1532 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1533 | if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram\r |
fa1e5e29 |
1534 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1535 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1536 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1537 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1538 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1539 | }\r |
1540 | dprintf("s68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1541 | } else {\r |
cc68a136 |
1542 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
fa1e5e29 |
1543 | if(a<0x20000) return *(u16 *)(Pico.rom+(a&~1)); // Bios\r |
1544 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1545 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1546 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1547 | else if (a < 0x220000) {\r |
1548 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1549 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1550 | }\r |
1551 | }\r |
1552 | dprintf("m68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1553 | }\r |
b837b69b |
1554 | return 0;\r |
cc68a136 |
1555 | }\r |
1556 | unsigned int m68k_read_pcrelative_CD32(unsigned int a) {\r |
fa1e5e29 |
1557 | u16 *pm;\r |
cc68a136 |
1558 | a&=0xffffff;\r |
1559 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
1560 | if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram\r |
fa1e5e29 |
1561 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1562 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1563 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
1564 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
1565 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1566 | return (pm[0]<<16)|pm[1];\r |
1567 | }\r |
1568 | dprintf("s68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1569 | } else {\r |
cc68a136 |
1570 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
fa1e5e29 |
1571 | if(a<0x20000) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
1572 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1573 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1574 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1575 | else if (a < 0x220000) {\r |
1576 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1577 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1578 | return (pm[0]<<16)|pm[1];\r |
1579 | }\r |
1580 | }\r |
1581 | dprintf("m68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1582 | }\r |
b837b69b |
1583 | return 0;\r |
cc68a136 |
1584 | }\r |
1585 | #endif // EMU_M68K\r |
1586 | \r |