6cadc2da |
1 | // Memory I/O handlers for Sega/Mega CD.\r |
2 | // Loosely based on Gens code.\r |
3 | // (c) Copyright 2007, Grazvydas "notaz" Ignotas\r |
cc68a136 |
4 | \r |
5 | // A68K no longer supported here\r |
6 | \r |
7 | //#define __debug_io\r |
8 | \r |
9 | #include "../PicoInt.h"\r |
10 | \r |
cc68a136 |
11 | #include "../sound/ym2612.h"\r |
12 | #include "../sound/sn76496.h"\r |
13 | \r |
cb4a513a |
14 | #include "gfx_cd.h"\r |
4f265db7 |
15 | #include "pcm.h"\r |
cb4a513a |
16 | \r |
eff55556 |
17 | #ifndef UTYPES_DEFINED\r |
cc68a136 |
18 | typedef unsigned char u8;\r |
19 | typedef unsigned short u16;\r |
20 | typedef unsigned int u32;\r |
eff55556 |
21 | #define UTYPES_DEFINED\r |
22 | #endif\r |
cc68a136 |
23 | \r |
24 | //#define __debug_io\r |
25 | //#define __debug_io2\r |
66fdc0f0 |
26 | \r |
721cd396 |
27 | #define rdprintf dprintf\r |
28 | //#define rdprintf(...)\r |
68cba51e |
29 | //#define wrdprintf dprintf\r |
913ef4b7 |
30 | #define wrdprintf(...)\r |
721cd396 |
31 | #define plprintf dprintf\r |
32 | //#define plprintf(...)\r |
cc68a136 |
33 | \r |
34 | // -----------------------------------------------------------------\r |
35 | \r |
7a1f6e45 |
36 | // poller detection\r |
2433f409 |
37 | //#undef USE_POLL_DETECT\r |
7a1f6e45 |
38 | #define POLL_LIMIT 16\r |
39 | #define POLL_CYCLES 124\r |
40 | // int m68k_poll_addr, m68k_poll_cnt;\r |
41 | unsigned int s68k_poll_adclk, s68k_poll_cnt;\r |
cc68a136 |
42 | \r |
4ff2d527 |
43 | #ifndef _ASM_CD_MEMORY_C\r |
cb4a513a |
44 | static u32 m68k_reg_read16(u32 a)\r |
cc68a136 |
45 | {\r |
46 | u32 d=0;\r |
47 | a &= 0x3e;\r |
672ad671 |
48 | // dprintf("m68k_regs r%2i: [%02x] @%06x", realsize&~1, a+(realsize&1), SekPc);\r |
cc68a136 |
49 | \r |
50 | switch (a) {\r |
672ad671 |
51 | case 0:\r |
c459aefd |
52 | d = ((Pico_mcd->s68k_regs[0x33]<<13)&0x8000) | Pico_mcd->m.busreq; // here IFL2 is always 0, just like in Gens\r |
672ad671 |
53 | goto end;\r |
cc68a136 |
54 | case 2:\r |
672ad671 |
55 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0xc7);\r |
c008977e |
56 | // the DMNA delay must only be visible on s68k side (Lunar2, Silpheed)\r |
57 | if (Pico_mcd->m.state_flags&2) { d &= ~1; d |= 2; }\r |
58 | //printf("m68k_regs r3: %02x @%06x\n", (u8)d, SekPc);\r |
cc68a136 |
59 | goto end;\r |
c459aefd |
60 | case 4:\r |
61 | d = Pico_mcd->s68k_regs[4]<<8;\r |
62 | goto end;\r |
63 | case 6:\r |
913ef4b7 |
64 | d = *(u16 *)(Pico_mcd->bios + 0x72);\r |
c459aefd |
65 | goto end;\r |
cc68a136 |
66 | case 8:\r |
cc68a136 |
67 | d = Read_CDC_Host(0);\r |
68 | goto end;\r |
c459aefd |
69 | case 0xA:\r |
fa1e5e29 |
70 | dprintf("m68k FIXME: reserved read");\r |
c459aefd |
71 | goto end;\r |
cc68a136 |
72 | case 0xC:\r |
1cd356a3 |
73 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
74 | dprintf("m68k stopwatch timer read (%04x)", d);\r |
1cd356a3 |
75 | goto end;\r |
cc68a136 |
76 | }\r |
77 | \r |
cc68a136 |
78 | if (a < 0x30) {\r |
79 | // comm flag/cmd/status (0xE-0x2F)\r |
80 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
81 | goto end;\r |
82 | }\r |
83 | \r |
fa1e5e29 |
84 | dprintf("m68k_regs FIXME invalid read @ %02x", a);\r |
cc68a136 |
85 | \r |
86 | end:\r |
87 | \r |
672ad671 |
88 | // dprintf("ret = %04x", d);\r |
cc68a136 |
89 | return d;\r |
90 | }\r |
4ff2d527 |
91 | #endif\r |
cc68a136 |
92 | \r |
4ff2d527 |
93 | #ifndef _ASM_CD_MEMORY_C\r |
94 | static\r |
95 | #endif\r |
96 | void m68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
97 | {\r |
98 | a &= 0x3f;\r |
672ad671 |
99 | // dprintf("m68k_regs w%2i: [%02x] %02x @%06x", realsize, a, d, SekPc);\r |
cc68a136 |
100 | \r |
101 | switch (a) {\r |
102 | case 0:\r |
672ad671 |
103 | d &= 1;\r |
cc68a136 |
104 | if ((d&1) && (Pico_mcd->s68k_regs[0x33]&(1<<2))) { dprintf("m68k: s68k irq 2"); SekInterruptS68k(2); }\r |
c459aefd |
105 | return;\r |
cc68a136 |
106 | case 1:\r |
672ad671 |
107 | d &= 3;\r |
51a902ae |
108 | if (!(d&1)) Pico_mcd->m.state_flags |= 1; // reset pending, needed to be sure we fetch the right vectors on reset\r |
c459aefd |
109 | if ( (Pico_mcd->m.busreq&1) != (d&1)) dprintf("m68k: s68k reset %i", !(d&1));\r |
110 | if ( (Pico_mcd->m.busreq&2) != (d&2)) dprintf("m68k: s68k brq %i", (d&2)>>1);\r |
51a902ae |
111 | if ((Pico_mcd->m.state_flags&1) && (d&3)==1) {\r |
cc68a136 |
112 | SekResetS68k(); // S68k comes out of RESET or BRQ state\r |
4ff2d527 |
113 | Pico_mcd->m.state_flags&=~1;\r |
114 | dprintf("m68k: resetting s68k, cycles=%i", SekCyclesLeft);\r |
cc68a136 |
115 | }\r |
c459aefd |
116 | Pico_mcd->m.busreq = d;\r |
117 | return;\r |
672ad671 |
118 | case 2:\r |
721cd396 |
119 | dprintf("m68k: prg wp=%02x", d);\r |
672ad671 |
120 | Pico_mcd->s68k_regs[2] = d; // really use s68k side register\r |
121 | return;\r |
66fdc0f0 |
122 | case 3: {\r |
123 | u32 dold = Pico_mcd->s68k_regs[3]&0x1f;\r |
c008977e |
124 | //printf("m68k_regs w3: %02x @%06x\n", (u8)d, SekPc);\r |
672ad671 |
125 | d &= 0xc2;\r |
66fdc0f0 |
126 | if ((dold>>6) != ((d>>6)&3))\r |
672ad671 |
127 | dprintf("m68k: prg bank: %i -> %i", (Pico_mcd->s68k_regs[a]>>6), ((d>>6)&3));\r |
128 | //if ((Pico_mcd->s68k_regs[3]&4) != (d&4)) dprintf("m68k: ram mode %i mbit", (d&4) ? 1 : 2);\r |
129 | //if ((Pico_mcd->s68k_regs[3]&2) != (d&2)) dprintf("m68k: %s", (d&4) ? ((d&2) ? "word swap req" : "noop?") :\r |
130 | // ((d&2) ? "word ram to s68k" : "word ram to m68k"));\r |
66fdc0f0 |
131 | if (dold & 4) {\r |
132 | d ^= 2; // writing 0 to DMNA actually sets it, 1 does nothing\r |
133 | } else {\r |
134 | //dold &= ~2; // ??\r |
89fa852d |
135 | #if 1\r |
136 | if ((d & 2) && !(dold & 2)) {\r |
137 | Pico_mcd->m.state_flags |= 2; // we must delay setting DMNA bit (needed for Silpheed)\r |
138 | d &= ~2;\r |
139 | }\r |
140 | #else\r |
66fdc0f0 |
141 | if (d & 2) dold &= ~1; // return word RAM to s68k in 2M mode\r |
89fa852d |
142 | #endif\r |
66fdc0f0 |
143 | }\r |
144 | Pico_mcd->s68k_regs[3] = d | dold; // really use s68k side register\r |
7a1f6e45 |
145 | #ifdef USE_POLL_DETECT\r |
146 | if ((s68k_poll_adclk&0xfe) == 2 && s68k_poll_cnt > POLL_LIMIT) {\r |
147 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
2433f409 |
148 | plprintf("s68k poll release, a=%02x\n", a);\r |
7a1f6e45 |
149 | }\r |
150 | #endif\r |
672ad671 |
151 | return;\r |
66fdc0f0 |
152 | }\r |
c459aefd |
153 | case 6:\r |
d1df8786 |
154 | Pico_mcd->bios[0x72 + 1] = d; // simple hint vector changer\r |
c459aefd |
155 | return;\r |
156 | case 7:\r |
d1df8786 |
157 | Pico_mcd->bios[0x72] = d;\r |
913ef4b7 |
158 | dprintf("hint vector set to %08x", PicoRead32(0x70));\r |
c459aefd |
159 | return;\r |
7a1f6e45 |
160 | case 0xf:\r |
161 | d = (d << 1) | ((d >> 7) & 1); // rol8 1 (special case)\r |
cc68a136 |
162 | case 0xe:\r |
672ad671 |
163 | //dprintf("m68k: comm flag: %02x", d);\r |
cc68a136 |
164 | Pico_mcd->s68k_regs[0xe] = d;\r |
7a1f6e45 |
165 | #ifdef USE_POLL_DETECT\r |
166 | if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) {\r |
167 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
2433f409 |
168 | plprintf("s68k poll release, a=%02x\n", a);\r |
7a1f6e45 |
169 | }\r |
170 | #endif\r |
c459aefd |
171 | return;\r |
672ad671 |
172 | }\r |
173 | \r |
174 | if ((a&0xf0) == 0x10) {\r |
cc68a136 |
175 | Pico_mcd->s68k_regs[a] = d;\r |
7a1f6e45 |
176 | #ifdef USE_POLL_DETECT\r |
177 | if ((a&0xfe) == (s68k_poll_adclk&0xfe) && s68k_poll_cnt > POLL_LIMIT) {\r |
178 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
2433f409 |
179 | plprintf("s68k poll release, a=%02x\n", a);\r |
7a1f6e45 |
180 | }\r |
181 | #endif\r |
672ad671 |
182 | return;\r |
cc68a136 |
183 | }\r |
184 | \r |
fa1e5e29 |
185 | dprintf("m68k FIXME: invalid write? [%02x] %02x", a, d);\r |
cc68a136 |
186 | }\r |
187 | \r |
2433f409 |
188 | #ifndef _ASM_CD_MEMORY_C\r |
189 | static\r |
190 | #endif\r |
191 | u32 s68k_poll_detect(u32 a, u32 d)\r |
192 | {\r |
193 | #ifdef USE_POLL_DETECT\r |
194 | // polling detection\r |
195 | if (a == (s68k_poll_adclk&0xff)) {\r |
196 | unsigned int clkdiff = SekCyclesDoneS68k() - (s68k_poll_adclk>>8);\r |
197 | if (clkdiff <= POLL_CYCLES) {\r |
198 | s68k_poll_cnt++;\r |
199 | //printf("-- diff: %u, cnt = %i\n", clkdiff, s68k_poll_cnt);\r |
200 | if (s68k_poll_cnt > POLL_LIMIT) {\r |
201 | SekSetStopS68k(1);\r |
202 | plprintf("s68k poll detected @ %06x, a=%02x\n", SekPcS68k, a);\r |
203 | }\r |
204 | s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a;\r |
205 | return d;\r |
206 | }\r |
207 | }\r |
208 | s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a;\r |
209 | s68k_poll_cnt = 0;\r |
210 | #endif\r |
211 | return d;\r |
212 | }\r |
cc68a136 |
213 | \r |
913ef4b7 |
214 | #define READ_FONT_DATA(basemask) \\r |
215 | { \\r |
216 | unsigned int fnt = *(unsigned int *)(Pico_mcd->s68k_regs + 0x4c); \\r |
217 | unsigned int col0 = (fnt >> 8) & 0x0f, col1 = (fnt >> 12) & 0x0f; \\r |
218 | if (fnt & (basemask << 0)) d = col1 ; else d = col0; \\r |
219 | if (fnt & (basemask << 1)) d |= col1 << 4; else d |= col0 << 4; \\r |
220 | if (fnt & (basemask << 2)) d |= col1 << 8; else d |= col0 << 8; \\r |
221 | if (fnt & (basemask << 3)) d |= col1 << 12; else d |= col0 << 12; \\r |
222 | }\r |
223 | \r |
cc68a136 |
224 | \r |
4ff2d527 |
225 | #ifndef _ASM_CD_MEMORY_C\r |
226 | static\r |
227 | #endif\r |
228 | u32 s68k_reg_read16(u32 a)\r |
cc68a136 |
229 | {\r |
230 | u32 d=0;\r |
cc68a136 |
231 | \r |
672ad671 |
232 | // dprintf("s68k_regs r%2i: [%02x] @ %06x", realsize&~1, a+(realsize&1), SekPcS68k);\r |
cc68a136 |
233 | \r |
234 | switch (a) {\r |
235 | case 0:\r |
7a1f6e45 |
236 | return ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state\r |
672ad671 |
237 | case 2:\r |
2433f409 |
238 | d = (Pico_mcd->s68k_regs[2]<<8) | (Pico_mcd->s68k_regs[3]&0x1f);\r |
c008977e |
239 | //printf("s68k_regs r3: %02x @%06x\n", (u8)d, SekPcS68k);\r |
2433f409 |
240 | return s68k_poll_detect(a, d);\r |
cc68a136 |
241 | case 6:\r |
7a1f6e45 |
242 | return CDC_Read_Reg();\r |
cc68a136 |
243 | case 8:\r |
7a1f6e45 |
244 | return Read_CDC_Host(1); // Gens returns 0 here on byte reads\r |
cc68a136 |
245 | case 0xC:\r |
4f265db7 |
246 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
247 | dprintf("s68k stopwatch timer read (%04x)", d);\r |
7a1f6e45 |
248 | return d;\r |
d1df8786 |
249 | case 0x30:\r |
7a1f6e45 |
250 | dprintf("s68k int3 timer read (%02x)", Pico_mcd->s68k_regs[31]);\r |
251 | return Pico_mcd->s68k_regs[31];\r |
cc68a136 |
252 | case 0x34: // fader\r |
7a1f6e45 |
253 | return 0; // no busy bit\r |
913ef4b7 |
254 | case 0x50: // font data (check: Lunar 2, Silpheed)\r |
255 | READ_FONT_DATA(0x00100000);\r |
7a1f6e45 |
256 | return d;\r |
913ef4b7 |
257 | case 0x52:\r |
258 | READ_FONT_DATA(0x00010000);\r |
7a1f6e45 |
259 | return d;\r |
913ef4b7 |
260 | case 0x54:\r |
261 | READ_FONT_DATA(0x10000000);\r |
7a1f6e45 |
262 | return d;\r |
913ef4b7 |
263 | case 0x56:\r |
264 | READ_FONT_DATA(0x01000000);\r |
7a1f6e45 |
265 | return d;\r |
cc68a136 |
266 | }\r |
267 | \r |
268 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
269 | \r |
2433f409 |
270 | if (a >= 0x0e && a < 0x30)\r |
271 | return s68k_poll_detect(a, d);\r |
7a1f6e45 |
272 | \r |
cc68a136 |
273 | return d;\r |
274 | }\r |
275 | \r |
4ff2d527 |
276 | #ifndef _ASM_CD_MEMORY_C\r |
277 | static\r |
278 | #endif\r |
279 | void s68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
280 | {\r |
672ad671 |
281 | //dprintf("s68k_regs w%2i: [%02x] %02x @ %06x", realsize, a, d, SekPcS68k);\r |
cc68a136 |
282 | \r |
283 | // TODO: review against Gens\r |
48e8482f |
284 | // Warning: d might have upper bits set\r |
cc68a136 |
285 | switch (a) {\r |
672ad671 |
286 | case 2:\r |
287 | return; // only m68k can change WP\r |
fa1e5e29 |
288 | case 3: {\r |
289 | int dold = Pico_mcd->s68k_regs[3];\r |
c008977e |
290 | //printf("s68k_regs w3: %02x @%06x\n", (u8)d, SekPcS68k);\r |
672ad671 |
291 | d &= 0x1d;\r |
4ff2d527 |
292 | d |= dold&0xc2;\r |
d0d47c5b |
293 | if (d&4) {\r |
4ff2d527 |
294 | if ((d ^ dold) & 5) {\r |
295 | d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit\r |
4ff2d527 |
296 | PicoMemResetCD(d);\r |
4ff2d527 |
297 | }\r |
48e8482f |
298 | #ifdef _ASM_CD_MEMORY_C\r |
299 | if ((d ^ dold) & 0x1d)\r |
300 | PicoMemResetCDdecode(d);\r |
301 | #endif\r |
fa1e5e29 |
302 | if (!(dold & 4)) {\r |
303 | dprintf("wram mode 2M->1M");\r |
304 | wram_2M_to_1M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
305 | }\r |
d0d47c5b |
306 | } else {\r |
fa1e5e29 |
307 | if (dold & 4) {\r |
308 | dprintf("wram mode 1M->2M");\r |
4ff2d527 |
309 | if (!(d&1)) { // it didn't set the ret bit, which means it doesn't want to give WRAM to m68k\r |
310 | d &= ~3;\r |
311 | d |= (dold&1) ? 2 : 1; // then give it to the one which had bank0 in 1M mode\r |
312 | }\r |
fa1e5e29 |
313 | wram_1M_to_2M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
314 | PicoMemResetCD(d);\r |
4ff2d527 |
315 | }\r |
316 | else\r |
317 | d |= dold&1;\r |
318 | if (d&1) d &= ~2; // return word RAM to m68k in 2M mode\r |
d0d47c5b |
319 | }\r |
672ad671 |
320 | break;\r |
fa1e5e29 |
321 | }\r |
cc68a136 |
322 | case 4:\r |
323 | dprintf("s68k CDC dest: %x", d&7);\r |
324 | Pico_mcd->s68k_regs[4] = (Pico_mcd->s68k_regs[4]&0xC0) | (d&7); // CDC mode\r |
325 | return;\r |
326 | case 5:\r |
c459aefd |
327 | //dprintf("s68k CDC reg addr: %x", d&0xf);\r |
cc68a136 |
328 | break;\r |
329 | case 7:\r |
330 | CDC_Write_Reg(d);\r |
331 | return;\r |
332 | case 0xa:\r |
333 | dprintf("s68k set CDC dma addr");\r |
334 | break;\r |
d1df8786 |
335 | case 0xc:\r |
4f265db7 |
336 | case 0xd:\r |
d1df8786 |
337 | dprintf("s68k set stopwatch timer");\r |
4f265db7 |
338 | Pico_mcd->m.timer_stopwatch = 0;\r |
339 | return;\r |
1cd356a3 |
340 | case 0xe:\r |
7a1f6e45 |
341 | Pico_mcd->s68k_regs[0xf] = (d>>1) | (d<<7); // ror8 1, Gens note: Dragons lair\r |
1cd356a3 |
342 | return;\r |
d1df8786 |
343 | case 0x31:\r |
4f265db7 |
344 | dprintf("s68k set int3 timer: %02x", d);\r |
48e8482f |
345 | Pico_mcd->m.timer_int3 = (d & 0xff) << 16;\r |
d1df8786 |
346 | break;\r |
cc68a136 |
347 | case 0x33: // IRQ mask\r |
348 | dprintf("s68k irq mask: %02x", d);\r |
349 | if ((d&(1<<4)) && (Pico_mcd->s68k_regs[0x37]&4) && !(Pico_mcd->s68k_regs[0x33]&(1<<4))) {\r |
350 | CDD_Export_Status();\r |
cc68a136 |
351 | }\r |
352 | break;\r |
353 | case 0x34: // fader\r |
354 | Pico_mcd->s68k_regs[a] = (u8) d & 0x7f;\r |
355 | return;\r |
672ad671 |
356 | case 0x36:\r |
357 | return; // d/m bit is unsetable\r |
358 | case 0x37: {\r |
359 | u32 d_old = Pico_mcd->s68k_regs[0x37];\r |
360 | Pico_mcd->s68k_regs[0x37] = d&7;\r |
361 | if ((d&4) && !(d_old&4)) {\r |
cc68a136 |
362 | CDD_Export_Status();\r |
cc68a136 |
363 | }\r |
672ad671 |
364 | return;\r |
365 | }\r |
cc68a136 |
366 | case 0x4b:\r |
367 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
368 | CDD_Import_Command();\r |
369 | return;\r |
370 | }\r |
371 | \r |
1cd356a3 |
372 | if ((a&0x1f0) == 0x10 || (a >= 0x38 && a < 0x42))\r |
cc68a136 |
373 | {\r |
fa1e5e29 |
374 | dprintf("s68k FIXME: invalid write @ %02x?", a);\r |
cc68a136 |
375 | return;\r |
376 | }\r |
377 | \r |
378 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
379 | }\r |
380 | \r |
381 | \r |
4ff2d527 |
382 | #ifndef _ASM_CD_MEMORY_C\r |
fa1e5e29 |
383 | static u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
384 | {\r |
385 | u32 d=0;\r |
386 | \r |
672ad671 |
387 | if ((a&0xffffc0)==0xa12000) {\r |
cb4a513a |
388 | d=m68k_reg_read16(a);\r |
672ad671 |
389 | goto end;\r |
390 | }\r |
cc68a136 |
391 | \r |
fa1e5e29 |
392 | dprintf("m68k FIXME: unusual r%i: %06x @%06x", realsize&~1, (a&0xfffffe)+(realsize&1), SekPc);\r |
cc68a136 |
393 | \r |
394 | end:\r |
395 | return d;\r |
396 | }\r |
397 | \r |
cc68a136 |
398 | \r |
fa1e5e29 |
399 | static void OtherWrite8End(u32 a, u32 d, int realsize)\r |
cc68a136 |
400 | {\r |
cb4a513a |
401 | if ((a&0xffffc0)==0xa12000) { m68k_reg_write8(a, d); return; }\r |
cc68a136 |
402 | \r |
721cd396 |
403 | dprintf("m68k FIXME: strange w%i: [%06x], %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
404 | }\r |
405 | \r |
69996cb7 |
406 | #define _CD_MEMORY_C\r |
fa1e5e29 |
407 | #undef _ASM_MEMORY_C\r |
408 | #include "../MemoryCmn.c"\r |
4ff2d527 |
409 | #include "cell_map.c"\r |
410 | #endif // !def _ASM_CD_MEMORY_C\r |
cc68a136 |
411 | \r |
2433f409 |
412 | \r |
cc68a136 |
413 | // -----------------------------------------------------------------\r |
414 | // Read Rom and read Ram\r |
415 | \r |
4ff2d527 |
416 | //u8 PicoReadM68k8_(u32 a);\r |
417 | #ifdef _ASM_CD_MEMORY_C\r |
0af33fe0 |
418 | u32 PicoReadM68k8(u32 a);\r |
4ff2d527 |
419 | #else\r |
0af33fe0 |
420 | static u32 PicoReadM68k8(u32 a)\r |
cc68a136 |
421 | {\r |
422 | u32 d=0;\r |
423 | \r |
424 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
425 | \r |
426 | a&=0xffffff;\r |
427 | \r |
428 | if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios\r |
429 | \r |
430 | // prg RAM\r |
721cd396 |
431 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r |
672ad671 |
432 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
433 | d = *(prg_bank+((a^1)&0x1ffff));\r |
434 | goto end;\r |
435 | }\r |
436 | \r |
d0d47c5b |
437 | // word RAM\r |
438 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
439 | wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
440 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
441 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
442 | if (a >= 0x220000)\r |
443 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
444 | else a &= 0x1ffff;\r |
445 | d = Pico_mcd->word_ram1M[bank][a^1];\r |
d0d47c5b |
446 | } else {\r |
447 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
448 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
449 | }\r |
913ef4b7 |
450 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
451 | goto end;\r |
452 | }\r |
453 | \r |
cc68a136 |
454 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
455 | \r |
c459aefd |
456 | if ((a&0xffffc0)==0xa12000)\r |
457 | rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
458 | \r |
cc68a136 |
459 | d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r |
460 | \r |
c459aefd |
461 | if ((a&0xffffc0)==0xa12000)\r |
462 | rdprintf("ret = %02x", (u8)d);\r |
672ad671 |
463 | \r |
cc68a136 |
464 | end:\r |
465 | \r |
466 | #ifdef __debug_io\r |
467 | dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
468 | #endif\r |
0af33fe0 |
469 | return d;\r |
cc68a136 |
470 | }\r |
4ff2d527 |
471 | #endif\r |
cc68a136 |
472 | \r |
ab0607f7 |
473 | \r |
4ff2d527 |
474 | #ifdef _ASM_CD_MEMORY_C\r |
0af33fe0 |
475 | u32 PicoReadM68k16(u32 a);\r |
4ff2d527 |
476 | #else\r |
0af33fe0 |
477 | static u32 PicoReadM68k16(u32 a)\r |
cc68a136 |
478 | {\r |
0af33fe0 |
479 | u32 d=0;\r |
cc68a136 |
480 | \r |
481 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
482 | \r |
483 | a&=0xfffffe;\r |
484 | \r |
485 | if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios\r |
486 | \r |
487 | // prg RAM\r |
721cd396 |
488 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r |
672ad671 |
489 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
c008977e |
490 | wrdprintf("m68k_prgram r16: [%i,%06x] @%06x", Pico_mcd->s68k_regs[3]>>6, a, SekPc);\r |
cc68a136 |
491 | d = *(u16 *)(prg_bank+(a&0x1fffe));\r |
c008977e |
492 | wrdprintf("ret = %04x", d);\r |
cc68a136 |
493 | goto end;\r |
494 | }\r |
495 | \r |
d0d47c5b |
496 | // word RAM\r |
497 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
498 | wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
499 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
500 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
501 | if (a >= 0x220000)\r |
502 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
503 | else a &= 0x1fffe;\r |
504 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
d0d47c5b |
505 | } else {\r |
506 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
507 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
508 | }\r |
913ef4b7 |
509 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
510 | goto end;\r |
511 | }\r |
512 | \r |
c459aefd |
513 | if ((a&0xffffc0)==0xa12000)\r |
514 | rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
515 | \r |
0af33fe0 |
516 | d = OtherRead16(a, 16);\r |
cc68a136 |
517 | \r |
c459aefd |
518 | if ((a&0xffffc0)==0xa12000)\r |
519 | rdprintf("ret = %04x", d);\r |
672ad671 |
520 | \r |
cc68a136 |
521 | end:\r |
522 | \r |
523 | #ifdef __debug_io\r |
524 | dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
525 | #endif\r |
526 | return d;\r |
527 | }\r |
4ff2d527 |
528 | #endif\r |
cc68a136 |
529 | \r |
ab0607f7 |
530 | \r |
4ff2d527 |
531 | #ifdef _ASM_CD_MEMORY_C\r |
532 | u32 PicoReadM68k32(u32 a);\r |
533 | #else\r |
534 | static u32 PicoReadM68k32(u32 a)\r |
cc68a136 |
535 | {\r |
536 | u32 d=0;\r |
537 | \r |
538 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
539 | \r |
540 | a&=0xfffffe;\r |
541 | \r |
542 | if (a < 0x20000) { u16 *pm=(u16 *)(Pico_mcd->bios+a); d = (pm[0]<<16)|pm[1]; goto end; } // bios\r |
543 | \r |
544 | // prg RAM\r |
721cd396 |
545 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r |
672ad671 |
546 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
547 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
548 | d = (pm[0]<<16)|pm[1];\r |
549 | goto end;\r |
550 | }\r |
551 | \r |
d0d47c5b |
552 | // word RAM\r |
553 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
554 | wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r |
d0d47c5b |
555 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
556 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
557 | if (a >= 0x220000) { // cell arranged\r |
558 | u32 a1, a2;\r |
559 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
560 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
561 | else a2 = a1 + 2;\r |
562 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16;\r |
563 | d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2);\r |
bf098bc5 |
564 | } else {\r |
fa1e5e29 |
565 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
bf098bc5 |
566 | }\r |
d0d47c5b |
567 | } else {\r |
568 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
569 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
570 | }\r |
913ef4b7 |
571 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
572 | goto end;\r |
573 | }\r |
574 | \r |
c459aefd |
575 | if ((a&0xffffc0)==0xa12000)\r |
576 | rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r |
672ad671 |
577 | \r |
cc68a136 |
578 | d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
579 | \r |
c459aefd |
580 | if ((a&0xffffc0)==0xa12000)\r |
581 | rdprintf("ret = %08x", d);\r |
672ad671 |
582 | \r |
cc68a136 |
583 | end:\r |
584 | #ifdef __debug_io\r |
585 | dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
586 | #endif\r |
587 | return d;\r |
588 | }\r |
4ff2d527 |
589 | #endif\r |
cc68a136 |
590 | \r |
ab0607f7 |
591 | \r |
cc68a136 |
592 | // -----------------------------------------------------------------\r |
cc68a136 |
593 | \r |
4ff2d527 |
594 | #ifdef _ASM_CD_MEMORY_C\r |
595 | void PicoWriteM68k8(u32 a,u8 d);\r |
596 | #else\r |
597 | static void PicoWriteM68k8(u32 a,u8 d)\r |
cc68a136 |
598 | {\r |
599 | #ifdef __debug_io\r |
600 | dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
601 | #endif\r |
602 | //if ((a&0xe0ffff)==0xe0a9ba+0x69c)\r |
603 | // dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
604 | \r |
605 | \r |
ab0607f7 |
606 | if ((a&0xe00000)==0xe00000) { // Ram\r |
607 | *(u8 *)(Pico.ram+((a^1)&0xffff)) = d;\r |
608 | return;\r |
609 | }\r |
cc68a136 |
610 | \r |
611 | a&=0xffffff;\r |
612 | \r |
613 | // prg RAM\r |
721cd396 |
614 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r |
672ad671 |
615 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
bf098bc5 |
616 | *(u8 *)(prg_bank+((a^1)&0x1ffff))=d;\r |
cc68a136 |
617 | return;\r |
618 | }\r |
619 | \r |
d0d47c5b |
620 | // word RAM\r |
621 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
622 | wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc);\r |
d0d47c5b |
623 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
624 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
625 | if (a >= 0x220000)\r |
626 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
627 | else a &= 0x1ffff;\r |
628 | *(u8 *)(Pico_mcd->word_ram1M[bank]+(a^1))=d;\r |
d0d47c5b |
629 | } else {\r |
630 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
631 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
632 | }\r |
633 | return;\r |
634 | }\r |
635 | \r |
2433f409 |
636 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
637 | rdprintf("m68k_regs w8: [%02x] %02x @%06x", a&0x3f, d, SekPc);\r |
2433f409 |
638 | m68k_reg_write8(a, d);\r |
639 | return;\r |
640 | }\r |
672ad671 |
641 | \r |
fb9bec94 |
642 | OtherWrite8(a,d);\r |
cc68a136 |
643 | }\r |
4ff2d527 |
644 | #endif\r |
cc68a136 |
645 | \r |
ab0607f7 |
646 | \r |
4ff2d527 |
647 | #ifdef _ASM_CD_MEMORY_C\r |
648 | void PicoWriteM68k16(u32 a,u16 d);\r |
649 | #else\r |
650 | static void PicoWriteM68k16(u32 a,u16 d)\r |
cc68a136 |
651 | {\r |
652 | #ifdef __debug_io\r |
653 | dprintf("w16: %06x, %04x", a&0xffffff, d);\r |
654 | #endif\r |
cc68a136 |
655 | // dprintf("w16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
656 | \r |
ab0607f7 |
657 | if ((a&0xe00000)==0xe00000) { // Ram\r |
658 | *(u16 *)(Pico.ram+(a&0xfffe))=d;\r |
659 | return;\r |
660 | }\r |
cc68a136 |
661 | \r |
662 | a&=0xfffffe;\r |
663 | \r |
664 | // prg RAM\r |
721cd396 |
665 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r |
672ad671 |
666 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
c008977e |
667 | wrdprintf("m68k_prgram w16: [%i,%06x] %04x @%06x", Pico_mcd->s68k_regs[3]>>6, a, d, SekPc);\r |
cc68a136 |
668 | *(u16 *)(prg_bank+(a&0x1fffe))=d;\r |
669 | return;\r |
670 | }\r |
671 | \r |
d0d47c5b |
672 | // word RAM\r |
673 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
674 | wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc);\r |
d0d47c5b |
675 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
676 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
677 | if (a >= 0x220000)\r |
678 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
679 | else a &= 0x1fffe;\r |
680 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a)=d;\r |
d0d47c5b |
681 | } else {\r |
682 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
683 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
684 | }\r |
685 | return;\r |
686 | }\r |
687 | \r |
7a1f6e45 |
688 | // regs\r |
689 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
690 | rdprintf("m68k_regs w16: [%02x] %04x @%06x", a&0x3f, d, SekPc);\r |
7a1f6e45 |
691 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
692 | Pico_mcd->s68k_regs[0xe] = d >> 8;\r |
693 | #ifdef USE_POLL_DETECT\r |
694 | if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) {\r |
6cadc2da |
695 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
2433f409 |
696 | plprintf("s68k poll release, a=%02x\n", a);\r |
7a1f6e45 |
697 | }\r |
698 | #endif\r |
699 | return;\r |
700 | }\r |
701 | m68k_reg_write8(a, d>>8);\r |
702 | m68k_reg_write8(a+1,d&0xff);\r |
703 | return;\r |
704 | }\r |
cc68a136 |
705 | \r |
706 | OtherWrite16(a,d);\r |
707 | }\r |
4ff2d527 |
708 | #endif\r |
cc68a136 |
709 | \r |
ab0607f7 |
710 | \r |
4ff2d527 |
711 | #ifdef _ASM_CD_MEMORY_C\r |
712 | void PicoWriteM68k32(u32 a,u32 d);\r |
713 | #else\r |
714 | static void PicoWriteM68k32(u32 a,u32 d)\r |
cc68a136 |
715 | {\r |
716 | #ifdef __debug_io\r |
717 | dprintf("w32: %06x, %08x", a&0xffffff, d);\r |
718 | #endif\r |
719 | \r |
720 | if ((a&0xe00000)==0xe00000)\r |
721 | {\r |
722 | // Ram:\r |
723 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
724 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
725 | return;\r |
726 | }\r |
727 | \r |
728 | a&=0xfffffe;\r |
729 | \r |
730 | // prg RAM\r |
721cd396 |
731 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r |
672ad671 |
732 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
733 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
734 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
735 | return;\r |
736 | }\r |
737 | \r |
672ad671 |
738 | // word RAM\r |
d0d47c5b |
739 | if ((a&0xfc0000)==0x200000) {\r |
740 | if (d != 0) // don't log clears\r |
913ef4b7 |
741 | wrdprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc);\r |
d0d47c5b |
742 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
743 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
744 | if (a >= 0x220000) { // cell arranged\r |
745 | u32 a1, a2;\r |
746 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
747 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
748 | else a2 = a1 + 2;\r |
749 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16;\r |
750 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d;\r |
bf098bc5 |
751 | } else {\r |
fa1e5e29 |
752 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
753 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
bf098bc5 |
754 | }\r |
d0d47c5b |
755 | } else {\r |
756 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
757 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
758 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
759 | }\r |
672ad671 |
760 | return;\r |
d0d47c5b |
761 | }\r |
672ad671 |
762 | \r |
2433f409 |
763 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
764 | rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);\r |
2433f409 |
765 | if ((a&0x3e) == 0xe) dprintf("m68k FIXME: w32 [%02x]", a&0x3f);\r |
766 | }\r |
cc68a136 |
767 | \r |
768 | OtherWrite16(a, (u16)(d>>16));\r |
769 | OtherWrite16(a+2,(u16)d);\r |
770 | }\r |
4ff2d527 |
771 | #endif\r |
cc68a136 |
772 | \r |
773 | \r |
721cd396 |
774 | // -----------------------------------------------------------------\r |
775 | // S68k\r |
cc68a136 |
776 | // -----------------------------------------------------------------\r |
777 | \r |
4ff2d527 |
778 | #ifdef _ASM_CD_MEMORY_C\r |
0af33fe0 |
779 | u32 PicoReadS68k8(u32 a);\r |
4ff2d527 |
780 | #else\r |
0af33fe0 |
781 | static u32 PicoReadS68k8(u32 a)\r |
cc68a136 |
782 | {\r |
783 | u32 d=0;\r |
784 | \r |
785 | a&=0xffffff;\r |
786 | \r |
787 | // prg RAM\r |
788 | if (a < 0x80000) {\r |
789 | d = *(Pico_mcd->prg_ram+(a^1));\r |
790 | goto end;\r |
791 | }\r |
792 | \r |
793 | // regs\r |
794 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
795 | a &= 0x1ff;\r |
796 | rdprintf("s68k_regs r8: [%02x] @ %06x", a, SekPcS68k);\r |
2433f409 |
797 | if (a >= 0x0e && a < 0x30) {\r |
798 | d = Pico_mcd->s68k_regs[a];\r |
799 | s68k_poll_detect(a, d);\r |
800 | rdprintf("ret = %02x", (u8)d);\r |
801 | goto end;\r |
802 | }\r |
803 | else if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
804 | d = gfx_cd_read(a&~1);\r |
805 | else d = s68k_reg_read16(a&~1);\r |
806 | if ((a&1)==0) d>>=8;\r |
c459aefd |
807 | rdprintf("ret = %02x", (u8)d);\r |
cc68a136 |
808 | goto end;\r |
809 | }\r |
810 | \r |
d0d47c5b |
811 | // word RAM (2M area)\r |
812 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
fa1e5e29 |
813 | // test: batman returns\r |
913ef4b7 |
814 | wrdprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
815 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
3aa1e148 |
816 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
817 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
818 | if (a&1) d &= 0x0f;\r |
819 | else d >>= 4;\r |
820 | dprintf("FIXME: decode");\r |
d0d47c5b |
821 | } else {\r |
822 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
823 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
824 | }\r |
913ef4b7 |
825 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
826 | goto end;\r |
827 | }\r |
828 | \r |
829 | // word RAM (1M area)\r |
68cba51e |
830 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
831 | int bank;\r |
913ef4b7 |
832 | wrdprintf("s68k_wram1M r8: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
833 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
834 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
835 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
836 | d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff];\r |
913ef4b7 |
837 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
838 | goto end;\r |
839 | }\r |
840 | \r |
4f265db7 |
841 | // PCM\r |
842 | if ((a&0xff8000)==0xff0000) {\r |
1cd356a3 |
843 | dprintf("s68k_pcm r8: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
844 | a &= 0x7fff;\r |
845 | if (a >= 0x2000)\r |
846 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
847 | else if (a >= 0x20) {\r |
848 | a &= 0x1e;\r |
849 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
850 | if (a & 2) d >>= 8;\r |
851 | }\r |
852 | dprintf("ret = %02x", (u8)d);\r |
853 | goto end;\r |
854 | }\r |
855 | \r |
ab0607f7 |
856 | // bram\r |
857 | if ((a&0xff0000)==0xfe0000) {\r |
858 | d = Pico_mcd->bram[(a>>1)&0x1fff];\r |
859 | goto end;\r |
860 | }\r |
861 | \r |
cc68a136 |
862 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
863 | \r |
864 | end:\r |
865 | \r |
866 | #ifdef __debug_io2\r |
867 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
868 | #endif\r |
0af33fe0 |
869 | return d;\r |
cc68a136 |
870 | }\r |
4ff2d527 |
871 | #endif\r |
cc68a136 |
872 | \r |
ab0607f7 |
873 | \r |
4ff2d527 |
874 | #ifdef _ASM_CD_MEMORY_C\r |
0af33fe0 |
875 | u32 PicoReadS68k16(u32 a);\r |
4ff2d527 |
876 | #else\r |
0af33fe0 |
877 | static u32 PicoReadS68k16(u32 a)\r |
cc68a136 |
878 | {\r |
4f265db7 |
879 | u32 d=0;\r |
cc68a136 |
880 | \r |
881 | a&=0xfffffe;\r |
882 | \r |
883 | // prg RAM\r |
884 | if (a < 0x80000) {\r |
c008977e |
885 | wrdprintf("s68k_prgram r16: [%06x] @%06x", a, SekPcS68k);\r |
cc68a136 |
886 | d = *(u16 *)(Pico_mcd->prg_ram+a);\r |
c008977e |
887 | wrdprintf("ret = %04x", d);\r |
cc68a136 |
888 | goto end;\r |
889 | }\r |
890 | \r |
891 | // regs\r |
892 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
893 | a &= 0x1fe;\r |
894 | rdprintf("s68k_regs r16: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
895 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
896 | d = gfx_cd_read(a);\r |
897 | else d = s68k_reg_read16(a);\r |
c459aefd |
898 | rdprintf("ret = %04x", d);\r |
cc68a136 |
899 | goto end;\r |
900 | }\r |
901 | \r |
d0d47c5b |
902 | // word RAM (2M area)\r |
903 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
904 | wrdprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
905 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
3aa1e148 |
906 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
907 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
908 | d |= d << 4; d &= ~0xf0;\r |
909 | dprintf("FIXME: decode");\r |
d0d47c5b |
910 | } else {\r |
911 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
912 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
913 | }\r |
913ef4b7 |
914 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
915 | goto end;\r |
916 | }\r |
917 | \r |
918 | // word RAM (1M area)\r |
68cba51e |
919 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
920 | int bank;\r |
913ef4b7 |
921 | wrdprintf("s68k_wram1M r16: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
922 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
923 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
924 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
925 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
913ef4b7 |
926 | wrdprintf("ret = %04x", d);\r |
ab0607f7 |
927 | goto end;\r |
928 | }\r |
929 | \r |
930 | // bram\r |
931 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
932 | dprintf("FIXME: s68k_bram r16: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
933 | a = (a>>1)&0x1fff;\r |
4f265db7 |
934 | d = Pico_mcd->bram[a++]; // Gens does little endian here, and so do we..\r |
4ff2d527 |
935 | d|= Pico_mcd->bram[a++] << 8; // This is most likely wrong\r |
ab0607f7 |
936 | dprintf("ret = %04x", d);\r |
d0d47c5b |
937 | goto end;\r |
938 | }\r |
939 | \r |
4f265db7 |
940 | // PCM\r |
941 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
942 | dprintf("FIXME: s68k_pcm r16: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
943 | a &= 0x7fff;\r |
944 | if (a >= 0x2000)\r |
945 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
946 | else if (a >= 0x20) {\r |
947 | a &= 0x1e;\r |
948 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
949 | if (a & 2) d >>= 8;\r |
950 | }\r |
951 | dprintf("ret = %04x", d);\r |
952 | goto end;\r |
953 | }\r |
954 | \r |
cc68a136 |
955 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
956 | \r |
957 | end:\r |
958 | \r |
959 | #ifdef __debug_io2\r |
960 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
961 | #endif\r |
962 | return d;\r |
963 | }\r |
4ff2d527 |
964 | #endif\r |
cc68a136 |
965 | \r |
ab0607f7 |
966 | \r |
4ff2d527 |
967 | #ifdef _ASM_CD_MEMORY_C\r |
968 | u32 PicoReadS68k32(u32 a);\r |
969 | #else\r |
970 | static u32 PicoReadS68k32(u32 a)\r |
cc68a136 |
971 | {\r |
972 | u32 d=0;\r |
973 | \r |
974 | a&=0xfffffe;\r |
975 | \r |
976 | // prg RAM\r |
977 | if (a < 0x80000) {\r |
978 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
979 | d = (pm[0]<<16)|pm[1];\r |
980 | goto end;\r |
981 | }\r |
982 | \r |
983 | // regs\r |
984 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
985 | a &= 0x1fe;\r |
986 | rdprintf("s68k_regs r32: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
987 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
988 | d = (gfx_cd_read(a)<<16)|gfx_cd_read(a+2);\r |
989 | else d = (s68k_reg_read16(a)<<16)|s68k_reg_read16(a+2);\r |
c459aefd |
990 | rdprintf("ret = %08x", d);\r |
cc68a136 |
991 | goto end;\r |
992 | }\r |
993 | \r |
d0d47c5b |
994 | // word RAM (2M area)\r |
995 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
996 | wrdprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
997 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
3aa1e148 |
998 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
999 | a >>= 1;\r |
1000 | d = Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] << 16;\r |
1001 | d |= Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff];\r |
1002 | d |= d << 4; d &= 0x0f0f0f0f;\r |
d0d47c5b |
1003 | } else {\r |
1004 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1005 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
1006 | }\r |
913ef4b7 |
1007 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
1008 | goto end;\r |
1009 | }\r |
1010 | \r |
1011 | // word RAM (1M area)\r |
68cba51e |
1012 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1013 | int bank;\r |
913ef4b7 |
1014 | wrdprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
1015 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1016 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
1017 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1018 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
913ef4b7 |
1019 | wrdprintf("ret = %08x", d);\r |
ab0607f7 |
1020 | goto end;\r |
1021 | }\r |
1022 | \r |
4f265db7 |
1023 | // PCM\r |
1024 | if ((a&0xff8000)==0xff0000) {\r |
2433f409 |
1025 | dprintf("s68k_pcm r32: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
1026 | a &= 0x7fff;\r |
1027 | if (a >= 0x2000) {\r |
1028 | a >>= 1;\r |
1029 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] << 16;\r |
1030 | d |= Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff];\r |
1031 | } else if (a >= 0x20) {\r |
1032 | a &= 0x1e;\r |
1033 | if (a & 2) {\r |
1034 | a >>= 2;\r |
1035 | d = (Pico_mcd->pcm.ch[a].addr >> (PCM_STEP_SHIFT-8)) & 0xff0000;\r |
1036 | d |= (Pico_mcd->pcm.ch[(a+1)&7].addr >> PCM_STEP_SHIFT) & 0xff;\r |
1037 | } else {\r |
1038 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
1039 | d = ((d<<16)&0xff0000) | ((d>>8)&0xff); // PCM chip is LE\r |
1040 | }\r |
1041 | }\r |
1042 | dprintf("ret = %08x", d);\r |
1043 | goto end;\r |
1044 | }\r |
1045 | \r |
ab0607f7 |
1046 | // bram\r |
1047 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
1048 | dprintf("FIXME: s68k_bram r32: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
1049 | a = (a>>1)&0x1fff;\r |
1050 | d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion..\r |
1051 | d|= Pico_mcd->bram[a++] << 24;\r |
1052 | d|= Pico_mcd->bram[a++];\r |
1053 | d|= Pico_mcd->bram[a++] << 8;\r |
1054 | dprintf("ret = %08x", d);\r |
d0d47c5b |
1055 | goto end;\r |
1056 | }\r |
1057 | \r |
cc68a136 |
1058 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1059 | \r |
1060 | end:\r |
1061 | \r |
1062 | #ifdef __debug_io2\r |
1063 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1064 | #endif\r |
1065 | return d;\r |
1066 | }\r |
4ff2d527 |
1067 | #endif\r |
cc68a136 |
1068 | \r |
ab0607f7 |
1069 | \r |
a4030801 |
1070 | #ifndef _ASM_CD_MEMORY_C\r |
0a051f55 |
1071 | /* check: jaguar xj 220 (draws entire world using decode) */\r |
1072 | static void decode_write8(u32 a, u8 d, int r3)\r |
1073 | {\r |
3aa1e148 |
1074 | u8 *pd = Pico_mcd->word_ram1M[(r3 & 1)^1] + (((a>>1)^1)&0x1ffff);\r |
0a051f55 |
1075 | u8 oldmask = (a&1) ? 0xf0 : 0x0f;\r |
1076 | \r |
0a051f55 |
1077 | r3 &= 0x18;\r |
1078 | d &= 0x0f;\r |
1079 | if (!(a&1)) d <<= 4;\r |
1080 | \r |
0a051f55 |
1081 | if (r3 == 8) {\r |
1082 | if ((!(*pd & (~oldmask))) && d) goto do_it;\r |
1083 | } else if (r3 > 8) {\r |
1084 | if (d) goto do_it;\r |
1085 | } else {\r |
1086 | goto do_it;\r |
1087 | }\r |
1088 | \r |
1089 | return;\r |
1090 | do_it:\r |
1091 | *pd = d | (*pd & oldmask);\r |
1092 | }\r |
1093 | \r |
1094 | \r |
1095 | static void decode_write16(u32 a, u16 d, int r3)\r |
1096 | {\r |
3aa1e148 |
1097 | u8 *pd = Pico_mcd->word_ram1M[(r3 & 1)^1] + (((a>>1)^1)&0x1ffff);\r |
0a051f55 |
1098 | \r |
1099 | //if ((a & 0x3ffff) < 0x28000) return;\r |
1100 | \r |
1101 | r3 &= 0x18;\r |
1102 | d &= 0x0f0f;\r |
1103 | d |= d >> 4;\r |
1104 | \r |
1105 | if (r3 == 8) {\r |
1106 | u8 dold = *pd;\r |
1107 | if (!(dold & 0xf0)) dold |= d & 0xf0;\r |
1108 | if (!(dold & 0x0f)) dold |= d & 0x0f;\r |
1109 | *pd = dold;\r |
1110 | } else if (r3 > 8) {\r |
1111 | u8 dold = *pd;\r |
1112 | if (!(d & 0xf0)) d |= dold & 0xf0;\r |
1113 | if (!(d & 0x0f)) d |= dold & 0x0f;\r |
1114 | *pd = d;\r |
1115 | } else {\r |
1116 | *pd = d;\r |
1117 | }\r |
0a051f55 |
1118 | }\r |
a4030801 |
1119 | #endif\r |
0a051f55 |
1120 | \r |
cc68a136 |
1121 | // -----------------------------------------------------------------\r |
1122 | \r |
4ff2d527 |
1123 | #ifdef _ASM_CD_MEMORY_C\r |
1124 | void PicoWriteS68k8(u32 a,u8 d);\r |
1125 | #else\r |
1126 | static void PicoWriteS68k8(u32 a,u8 d)\r |
cc68a136 |
1127 | {\r |
1128 | #ifdef __debug_io2\r |
1129 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1130 | #endif\r |
1131 | \r |
1132 | a&=0xffffff;\r |
1133 | \r |
1134 | // prg RAM\r |
1135 | if (a < 0x80000) {\r |
1136 | u8 *pm=(u8 *)(Pico_mcd->prg_ram+(a^1));\r |
721cd396 |
1137 | if (a >= (Pico_mcd->s68k_regs[2]<<8)) *pm=d;\r |
cc68a136 |
1138 | return;\r |
1139 | }\r |
1140 | \r |
1141 | // regs\r |
1142 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1143 | a &= 0x1ff;\r |
1144 | rdprintf("s68k_regs w8: [%02x] %02x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1145 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1146 | gfx_cd_write16(a&~1, (d<<8)|d);\r |
cb4a513a |
1147 | else s68k_reg_write8(a,d);\r |
cc68a136 |
1148 | return;\r |
1149 | }\r |
1150 | \r |
d0d47c5b |
1151 | // word RAM (2M area)\r |
1152 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1153 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1154 | wrdprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1155 | if (r3 & 4) { // 1M decode mode?\r |
1156 | decode_write8(a, d, r3);\r |
d0d47c5b |
1157 | } else {\r |
1158 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1159 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
1160 | }\r |
1161 | return;\r |
1162 | }\r |
1163 | \r |
1164 | // word RAM (1M area)\r |
68cba51e |
1165 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
1166 | // Wing Commander tries to write here in wrong mode\r |
fa1e5e29 |
1167 | int bank;\r |
d0d47c5b |
1168 | if (d)\r |
913ef4b7 |
1169 | wrdprintf("s68k_wram1M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1170 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1171 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
1172 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1173 | *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d;\r |
d0d47c5b |
1174 | return;\r |
1175 | }\r |
1176 | \r |
4f265db7 |
1177 | // PCM\r |
1178 | if ((a&0xff8000)==0xff0000) {\r |
1179 | a &= 0x7fff;\r |
1180 | if (a >= 0x2000)\r |
1181 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1182 | else if (a < 0x12)\r |
1183 | pcm_write(a>>1, d);\r |
1184 | return;\r |
1185 | }\r |
1186 | \r |
ab0607f7 |
1187 | // bram\r |
1188 | if ((a&0xff0000)==0xfe0000) {\r |
1189 | Pico_mcd->bram[(a>>1)&0x1fff] = d;\r |
1190 | SRam.changed = 1;\r |
1191 | return;\r |
1192 | }\r |
1193 | \r |
cc68a136 |
1194 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
1195 | }\r |
4ff2d527 |
1196 | #endif\r |
cc68a136 |
1197 | \r |
ab0607f7 |
1198 | \r |
4ff2d527 |
1199 | #ifdef _ASM_CD_MEMORY_C\r |
1200 | void PicoWriteS68k16(u32 a,u16 d);\r |
1201 | #else\r |
1202 | static void PicoWriteS68k16(u32 a,u16 d)\r |
cc68a136 |
1203 | {\r |
1204 | #ifdef __debug_io2\r |
1205 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1206 | #endif\r |
1207 | \r |
1208 | a&=0xfffffe;\r |
1209 | \r |
1210 | // prg RAM\r |
1211 | if (a < 0x80000) {\r |
c008977e |
1212 | wrdprintf("s68k_prgram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
721cd396 |
1213 | if (a >= (Pico_mcd->s68k_regs[2]<<8)) // needed for Dungeon Explorer\r |
1214 | *(u16 *)(Pico_mcd->prg_ram+a)=d;\r |
cc68a136 |
1215 | return;\r |
1216 | }\r |
1217 | \r |
1218 | // regs\r |
1219 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1220 | a &= 0x1fe;\r |
1221 | rdprintf("s68k_regs w16: [%02x] %04x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1222 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1223 | gfx_cd_write16(a, d);\r |
cb4a513a |
1224 | else {\r |
1cd356a3 |
1225 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
1226 | Pico_mcd->s68k_regs[0xf] = d;\r |
4ff2d527 |
1227 | return;\r |
1cd356a3 |
1228 | }\r |
cb4a513a |
1229 | s68k_reg_write8(a, d>>8);\r |
1230 | s68k_reg_write8(a+1,d&0xff);\r |
1231 | }\r |
cc68a136 |
1232 | return;\r |
1233 | }\r |
1234 | \r |
d0d47c5b |
1235 | // word RAM (2M area)\r |
1236 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1237 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1238 | wrdprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1239 | if (r3 & 4) { // 1M decode mode?\r |
1240 | decode_write16(a, d, r3);\r |
d0d47c5b |
1241 | } else {\r |
1242 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1243 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
1244 | }\r |
1245 | return;\r |
1246 | }\r |
1247 | \r |
1248 | // word RAM (1M area)\r |
68cba51e |
1249 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1250 | int bank;\r |
d0d47c5b |
1251 | if (d)\r |
913ef4b7 |
1252 | wrdprintf("s68k_wram1M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1253 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1254 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
1255 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1256 | *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d;\r |
d0d47c5b |
1257 | return;\r |
1258 | }\r |
1259 | \r |
4f265db7 |
1260 | // PCM\r |
1261 | if ((a&0xff8000)==0xff0000) {\r |
1262 | a &= 0x7fff;\r |
1263 | if (a >= 0x2000)\r |
1264 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1265 | else if (a < 0x12)\r |
1266 | pcm_write(a>>1, d & 0xff);\r |
1267 | return;\r |
1268 | }\r |
1269 | \r |
ab0607f7 |
1270 | // bram\r |
1271 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1272 | dprintf("s68k_bram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1273 | a = (a>>1)&0x1fff;\r |
1274 | Pico_mcd->bram[a++] = d; // Gens does little endian here, an so do we..\r |
1275 | Pico_mcd->bram[a++] = d >> 8;\r |
1276 | SRam.changed = 1;\r |
1277 | return;\r |
1278 | }\r |
1279 | \r |
cc68a136 |
1280 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
1281 | }\r |
4ff2d527 |
1282 | #endif\r |
cc68a136 |
1283 | \r |
ab0607f7 |
1284 | \r |
4ff2d527 |
1285 | #ifdef _ASM_CD_MEMORY_C\r |
1286 | void PicoWriteS68k32(u32 a,u32 d);\r |
1287 | #else\r |
1288 | static void PicoWriteS68k32(u32 a,u32 d)\r |
cc68a136 |
1289 | {\r |
1290 | #ifdef __debug_io2\r |
1291 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1292 | #endif\r |
1293 | \r |
1294 | a&=0xfffffe;\r |
1295 | \r |
1296 | // prg RAM\r |
1297 | if (a < 0x80000) {\r |
721cd396 |
1298 | if (a >= (Pico_mcd->s68k_regs[2]<<8)) {\r |
1299 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
1300 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1301 | }\r |
cc68a136 |
1302 | return;\r |
1303 | }\r |
1304 | \r |
1305 | // regs\r |
1306 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1307 | a &= 0x1fe;\r |
1308 | rdprintf("s68k_regs w32: [%02x] %08x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1309 | if (a >= 0x58 && a < 0x68) {\r |
48e8482f |
1310 | gfx_cd_write16(a, d>>16);\r |
1311 | gfx_cd_write16(a+2, d&0xffff);\r |
cb4a513a |
1312 | } else {\r |
2433f409 |
1313 | if ((a&0x1fe) == 0xe) dprintf("s68k FIXME: w32 [%02x]", a&0x3f);\r |
cb4a513a |
1314 | s68k_reg_write8(a, d>>24);\r |
1315 | s68k_reg_write8(a+1,(d>>16)&0xff);\r |
1316 | s68k_reg_write8(a+2,(d>>8) &0xff);\r |
1317 | s68k_reg_write8(a+3, d &0xff);\r |
1318 | }\r |
cc68a136 |
1319 | return;\r |
1320 | }\r |
1321 | \r |
d0d47c5b |
1322 | // word RAM (2M area)\r |
1323 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1324 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1325 | wrdprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1326 | if (r3 & 4) { // 1M decode mode?\r |
1327 | decode_write16(a , d >> 16, r3);\r |
1328 | decode_write16(a+2, d , r3);\r |
d0d47c5b |
1329 | } else {\r |
1330 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1331 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
1332 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1333 | }\r |
1334 | return;\r |
1335 | }\r |
1336 | \r |
1337 | // word RAM (1M area)\r |
68cba51e |
1338 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1339 | int bank;\r |
1340 | u16 *pm;\r |
d0d47c5b |
1341 | if (d)\r |
913ef4b7 |
1342 | wrdprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1343 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1344 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
1345 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1346 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1347 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
d0d47c5b |
1348 | return;\r |
1349 | }\r |
ab0607f7 |
1350 | \r |
4f265db7 |
1351 | // PCM\r |
1352 | if ((a&0xff8000)==0xff0000) {\r |
1353 | a &= 0x7fff;\r |
1354 | if (a >= 0x2000) {\r |
1355 | a >>= 1;\r |
1356 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] = (d >> 16);\r |
1357 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff] = d;\r |
1358 | } else if (a < 0x12) {\r |
1359 | a >>= 1;\r |
1360 | pcm_write(a, (d>>16) & 0xff);\r |
1361 | pcm_write(a+1, d & 0xff);\r |
1362 | }\r |
1363 | return;\r |
1364 | }\r |
1365 | \r |
ab0607f7 |
1366 | // bram\r |
1367 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1368 | dprintf("s68k_bram w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1369 | a = (a>>1)&0x1fff;\r |
1370 | Pico_mcd->bram[a++] = d >> 16; // middle endian? verify?\r |
1371 | Pico_mcd->bram[a++] = d >> 24;\r |
1372 | Pico_mcd->bram[a++] = d;\r |
1373 | Pico_mcd->bram[a++] = d >> 8;\r |
1374 | SRam.changed = 1;\r |
1375 | return;\r |
1376 | }\r |
1377 | \r |
cc68a136 |
1378 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
1379 | }\r |
4ff2d527 |
1380 | #endif\r |
cc68a136 |
1381 | \r |
1382 | \r |
1383 | // -----------------------------------------------------------------\r |
1384 | \r |
b837b69b |
1385 | \r |
3aa1e148 |
1386 | #ifdef EMU_C68K\r |
b837b69b |
1387 | static __inline int PicoMemBaseM68k(u32 pc)\r |
1388 | {\r |
fa1e5e29 |
1389 | if ((pc&0xe00000)==0xe00000)\r |
1390 | return (int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r |
b837b69b |
1391 | \r |
1392 | if (pc < 0x20000)\r |
fa1e5e29 |
1393 | return (int)Pico_mcd->bios; // Program Counter in BIOS\r |
1394 | \r |
1395 | if ((pc&0xfc0000)==0x200000)\r |
b837b69b |
1396 | {\r |
fa1e5e29 |
1397 | if (!(Pico_mcd->s68k_regs[3]&4))\r |
1398 | return (int)Pico_mcd->word_ram2M - 0x200000; // Program Counter in Word Ram\r |
1399 | if (pc < 0x220000) {\r |
3aa1e148 |
1400 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
fa1e5e29 |
1401 | return (int)Pico_mcd->word_ram1M[bank] - 0x200000;\r |
1402 | }\r |
b837b69b |
1403 | }\r |
1404 | \r |
fa1e5e29 |
1405 | // Error - Program Counter is invalid\r |
1406 | dprintf("m68k FIXME: unhandled jump to %06x", pc);\r |
1407 | \r |
1408 | return (int)Pico_mcd->bios;\r |
b837b69b |
1409 | }\r |
1410 | \r |
1411 | \r |
1412 | static u32 PicoCheckPcM68k(u32 pc)\r |
1413 | {\r |
3aa1e148 |
1414 | pc-=PicoCpuCM68k.membase; // Get real pc\r |
b837b69b |
1415 | pc&=0xfffffe;\r |
1416 | \r |
3aa1e148 |
1417 | PicoCpuCM68k.membase=PicoMemBaseM68k(pc);\r |
b837b69b |
1418 | \r |
3aa1e148 |
1419 | return PicoCpuCM68k.membase+pc;\r |
b837b69b |
1420 | }\r |
1421 | \r |
1422 | \r |
1423 | static __inline int PicoMemBaseS68k(u32 pc)\r |
1424 | {\r |
fa1e5e29 |
1425 | if (pc < 0x80000) // PRG RAM\r |
1426 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1427 | \r |
fa1e5e29 |
1428 | if ((pc&0xfc0000)==0x080000) // WORD RAM 2M area (assume we are in the right mode..)\r |
1429 | return (int)Pico_mcd->word_ram2M - 0x080000;\r |
1430 | \r |
1431 | if ((pc&0xfe0000)==0x0c0000) { // word RAM 1M area\r |
3aa1e148 |
1432 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1433 | return (int)Pico_mcd->word_ram1M[bank] - 0x0c0000;\r |
b837b69b |
1434 | }\r |
1435 | \r |
fa1e5e29 |
1436 | // Error - Program Counter is invalid\r |
1437 | dprintf("s68k FIXME: unhandled jump to %06x", pc);\r |
1438 | \r |
1439 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1440 | }\r |
1441 | \r |
1442 | \r |
1443 | static u32 PicoCheckPcS68k(u32 pc)\r |
1444 | {\r |
3aa1e148 |
1445 | pc-=PicoCpuCS68k.membase; // Get real pc\r |
b837b69b |
1446 | pc&=0xfffffe;\r |
1447 | \r |
3aa1e148 |
1448 | PicoCpuCS68k.membase=PicoMemBaseS68k(pc);\r |
b837b69b |
1449 | \r |
3aa1e148 |
1450 | return PicoCpuCS68k.membase+pc;\r |
b837b69b |
1451 | }\r |
1452 | #endif\r |
1453 | \r |
3aa1e148 |
1454 | #ifndef _ASM_CD_MEMORY_C\r |
1455 | void PicoMemResetCD(int r3)\r |
1456 | {\r |
1457 | #ifdef EMU_F68K\r |
1458 | // update fetchmap..\r |
1459 | int i;\r |
1460 | if (!(r3 & 4))\r |
1461 | {\r |
1462 | for (i = M68K_FETCHBANK1*2/16; (i<<(24-FAMEC_FETCHBITS)) < 0x240000; i++)\r |
1463 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram2M - 0x200000;\r |
1464 | }\r |
1465 | else\r |
1466 | {\r |
1467 | for (i = M68K_FETCHBANK1*2/16; (i<<(24-FAMEC_FETCHBITS)) < 0x220000; i++)\r |
1468 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram1M[r3 & 1] - 0x200000;\r |
1469 | for (i = M68K_FETCHBANK1*0x0c/0x100; (i<<(24-FAMEC_FETCHBITS)) < 0x0e0000; i++)\r |
1470 | PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram1M[(r3&1)^1] - 0x0c0000;\r |
1471 | }\r |
1472 | #endif\r |
1473 | }\r |
1474 | #endif\r |
b837b69b |
1475 | \r |
eff55556 |
1476 | PICO_INTERNAL void PicoMemSetupCD(void)\r |
b837b69b |
1477 | {\r |
1478 | dprintf("PicoMemSetupCD()");\r |
1479 | #ifdef EMU_C68K\r |
1480 | // Setup m68k memory callbacks:\r |
3aa1e148 |
1481 | PicoCpuCM68k.checkpc=PicoCheckPcM68k;\r |
1482 | PicoCpuCM68k.fetch8 =PicoCpuCM68k.read8 =PicoReadM68k8;\r |
1483 | PicoCpuCM68k.fetch16=PicoCpuCM68k.read16=PicoReadM68k16;\r |
1484 | PicoCpuCM68k.fetch32=PicoCpuCM68k.read32=PicoReadM68k32;\r |
1485 | PicoCpuCM68k.write8 =PicoWriteM68k8;\r |
1486 | PicoCpuCM68k.write16=PicoWriteM68k16;\r |
1487 | PicoCpuCM68k.write32=PicoWriteM68k32;\r |
b837b69b |
1488 | // s68k\r |
3aa1e148 |
1489 | PicoCpuCS68k.checkpc=PicoCheckPcS68k;\r |
1490 | PicoCpuCS68k.fetch8 =PicoCpuCS68k.read8 =PicoReadS68k8;\r |
1491 | PicoCpuCS68k.fetch16=PicoCpuCS68k.read16=PicoReadS68k16;\r |
1492 | PicoCpuCS68k.fetch32=PicoCpuCS68k.read32=PicoReadS68k32;\r |
1493 | PicoCpuCS68k.write8 =PicoWriteS68k8;\r |
1494 | PicoCpuCS68k.write16=PicoWriteS68k16;\r |
1495 | PicoCpuCS68k.write32=PicoWriteS68k32;\r |
b837b69b |
1496 | #endif\r |
3aa1e148 |
1497 | #ifdef EMU_F68K\r |
1498 | // m68k\r |
1499 | PicoCpuFM68k.read_byte =PicoReadM68k8;\r |
1500 | PicoCpuFM68k.read_word =PicoReadM68k16;\r |
1501 | PicoCpuFM68k.read_long =PicoReadM68k32;\r |
1502 | PicoCpuFM68k.write_byte=PicoWriteM68k8;\r |
1503 | PicoCpuFM68k.write_word=PicoWriteM68k16;\r |
1504 | PicoCpuFM68k.write_long=PicoWriteM68k32;\r |
1505 | // s68k\r |
1506 | PicoCpuFS68k.read_byte =PicoReadS68k8;\r |
1507 | PicoCpuFS68k.read_word =PicoReadS68k16;\r |
1508 | PicoCpuFS68k.read_long =PicoReadS68k32;\r |
1509 | PicoCpuFS68k.write_byte=PicoWriteS68k8;\r |
1510 | PicoCpuFS68k.write_word=PicoWriteS68k16;\r |
1511 | PicoCpuFS68k.write_long=PicoWriteS68k32;\r |
1512 | \r |
1513 | // setup FAME fetchmap\r |
1514 | {\r |
1515 | int i;\r |
1516 | // M68k\r |
1517 | // by default, point everything to fitst 64k of ROM (BIOS)\r |
1518 | for (i = 0; i < M68K_FETCHBANK1; i++)\r |
1519 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom - (i<<(24-FAMEC_FETCHBITS));\r |
1520 | // now real ROM (BIOS)\r |
1521 | for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < Pico.romsize; i++)\r |
1522 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom;\r |
1523 | // .. and RAM\r |
1524 | for (i = M68K_FETCHBANK1*14/16; i < M68K_FETCHBANK1; i++)\r |
1525 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.ram - (i<<(24-FAMEC_FETCHBITS));\r |
1526 | // S68k\r |
1527 | // PRG RAM is default\r |
1528 | for (i = 0; i < M68K_FETCHBANK1; i++)\r |
1529 | PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->prg_ram - (i<<(24-FAMEC_FETCHBITS));\r |
1530 | // real PRG RAM\r |
1531 | for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < 0x80000; i++)\r |
1532 | PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->prg_ram;\r |
1533 | // WORD RAM 2M area\r |
1534 | for (i = M68K_FETCHBANK1*0x08/0x100; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < 0xc0000; i++)\r |
1535 | PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram2M - 0x80000;\r |
1536 | // PicoMemResetCD() will setup word ram for both\r |
1537 | }\r |
1538 | #endif\r |
1539 | \r |
7a1f6e45 |
1540 | // m68k_poll_addr = m68k_poll_cnt = 0;\r |
1541 | s68k_poll_adclk = s68k_poll_cnt = 0;\r |
b837b69b |
1542 | }\r |
1543 | \r |
1544 | \r |
cc68a136 |
1545 | #ifdef EMU_M68K\r |
1546 | unsigned char PicoReadCD8w (unsigned int a) {\r |
3aa1e148 |
1547 | return m68ki_cpu_p == &PicoCpuMS68k ? PicoReadS68k8(a) : PicoReadM68k8(a);\r |
cc68a136 |
1548 | }\r |
1549 | unsigned short PicoReadCD16w(unsigned int a) {\r |
3aa1e148 |
1550 | return m68ki_cpu_p == &PicoCpuMS68k ? PicoReadS68k16(a) : PicoReadM68k16(a);\r |
cc68a136 |
1551 | }\r |
1552 | unsigned int PicoReadCD32w(unsigned int a) {\r |
3aa1e148 |
1553 | return m68ki_cpu_p == &PicoCpuMS68k ? PicoReadS68k32(a) : PicoReadM68k32(a);\r |
cc68a136 |
1554 | }\r |
1555 | void PicoWriteCD8w (unsigned int a, unsigned char d) {\r |
3aa1e148 |
1556 | if (m68ki_cpu_p == &PicoCpuMS68k) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);\r |
cc68a136 |
1557 | }\r |
1558 | void PicoWriteCD16w(unsigned int a, unsigned short d) {\r |
3aa1e148 |
1559 | if (m68ki_cpu_p == &PicoCpuMS68k) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);\r |
cc68a136 |
1560 | }\r |
1561 | void PicoWriteCD32w(unsigned int a, unsigned int d) {\r |
3aa1e148 |
1562 | if (m68ki_cpu_p == &PicoCpuMS68k) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);\r |
cc68a136 |
1563 | }\r |
1564 | \r |
1565 | // these are allowed to access RAM\r |
1566 | unsigned int m68k_read_pcrelative_CD8 (unsigned int a) {\r |
1567 | a&=0xffffff;\r |
3aa1e148 |
1568 | if(m68ki_cpu_p == &PicoCpuMS68k) {\r |
cc68a136 |
1569 | if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram\r |
fa1e5e29 |
1570 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1571 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1572 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
3aa1e148 |
1573 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1574 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1575 | }\r |
1576 | dprintf("s68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1577 | } else {\r |
cc68a136 |
1578 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
fa1e5e29 |
1579 | if(a<0x20000) return *(u8 *)(Pico.rom+(a^1)); // Bios\r |
1580 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1581 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1582 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1583 | else if (a < 0x220000) {\r |
1584 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1585 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1586 | }\r |
1587 | }\r |
1588 | dprintf("m68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1589 | }\r |
1590 | return 0;//(u8) lastread_d;\r |
1591 | }\r |
1592 | unsigned int m68k_read_pcrelative_CD16(unsigned int a) {\r |
1593 | a&=0xffffff;\r |
3aa1e148 |
1594 | if(m68ki_cpu_p == &PicoCpuMS68k) {\r |
cc68a136 |
1595 | if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram\r |
fa1e5e29 |
1596 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1597 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1598 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
3aa1e148 |
1599 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1600 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1601 | }\r |
1602 | dprintf("s68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1603 | } else {\r |
cc68a136 |
1604 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
fa1e5e29 |
1605 | if(a<0x20000) return *(u16 *)(Pico.rom+(a&~1)); // Bios\r |
1606 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1607 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1608 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1609 | else if (a < 0x220000) {\r |
1610 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1611 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1612 | }\r |
1613 | }\r |
1614 | dprintf("m68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1615 | }\r |
b837b69b |
1616 | return 0;\r |
cc68a136 |
1617 | }\r |
1618 | unsigned int m68k_read_pcrelative_CD32(unsigned int a) {\r |
fa1e5e29 |
1619 | u16 *pm;\r |
cc68a136 |
1620 | a&=0xffffff;\r |
3aa1e148 |
1621 | if(m68ki_cpu_p == &PicoCpuMS68k) {\r |
cc68a136 |
1622 | if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram\r |
fa1e5e29 |
1623 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1624 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1625 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
3aa1e148 |
1626 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1627 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1628 | return (pm[0]<<16)|pm[1];\r |
1629 | }\r |
1630 | dprintf("s68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1631 | } else {\r |
cc68a136 |
1632 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
fa1e5e29 |
1633 | if(a<0x20000) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
1634 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1635 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1636 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1637 | else if (a < 0x220000) {\r |
1638 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1639 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1640 | return (pm[0]<<16)|pm[1];\r |
1641 | }\r |
1642 | }\r |
1643 | dprintf("m68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1644 | }\r |
b837b69b |
1645 | return 0;\r |
cc68a136 |
1646 | }\r |
1647 | #endif // EMU_M68K\r |
1648 | \r |