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 |
cc68a136 |
5 | \r |
cc68a136 |
6 | #include "../PicoInt.h"\r |
7 | \r |
cc68a136 |
8 | #include "../sound/ym2612.h"\r |
9 | #include "../sound/sn76496.h"\r |
10 | \r |
cb4a513a |
11 | #include "gfx_cd.h"\r |
4f265db7 |
12 | #include "pcm.h"\r |
cb4a513a |
13 | \r |
eff55556 |
14 | #ifndef UTYPES_DEFINED\r |
cc68a136 |
15 | typedef unsigned char u8;\r |
16 | typedef unsigned short u16;\r |
17 | typedef unsigned int u32;\r |
eff55556 |
18 | #define UTYPES_DEFINED\r |
19 | #endif\r |
cc68a136 |
20 | \r |
dca310c4 |
21 | #ifdef _MSC_VER\r |
22 | #define rdprintf\r |
23 | #define wrdprintf\r |
24 | #else\r |
b5e5172d |
25 | //#define rdprintf dprintf\r |
26 | #define rdprintf(...)\r |
68cba51e |
27 | //#define wrdprintf dprintf\r |
913ef4b7 |
28 | #define wrdprintf(...)\r |
dca310c4 |
29 | #endif\r |
cc68a136 |
30 | \r |
b5e5172d |
31 | #ifdef EMU_CORE_DEBUG\r |
32 | extern u32 lastread_a, lastread_d[16], lastwrite_cyc_d[16];\r |
33 | extern int lrp_cyc, lwp_cyc;\r |
34 | #undef USE_POLL_DETECT\r |
35 | #endif\r |
36 | \r |
cc68a136 |
37 | // -----------------------------------------------------------------\r |
38 | \r |
7a1f6e45 |
39 | // poller detection\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 |
ca61ee42 |
72 | elprintf(EL_UIO, "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 |
ca61ee42 |
86 | elprintf(EL_UIO, "m68k_regs FIXME invalid read @ %02x", a);\r |
cc68a136 |
87 | \r |
88 | end:\r |
89 | \r |
cc68a136 |
90 | return d;\r |
91 | }\r |
4ff2d527 |
92 | #endif\r |
cc68a136 |
93 | \r |
4ff2d527 |
94 | #ifndef _ASM_CD_MEMORY_C\r |
95 | static\r |
96 | #endif\r |
97 | void m68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
98 | {\r |
99 | a &= 0x3f;\r |
672ad671 |
100 | // dprintf("m68k_regs w%2i: [%02x] %02x @%06x", realsize, a, d, SekPc);\r |
cc68a136 |
101 | \r |
102 | switch (a) {\r |
103 | case 0:\r |
672ad671 |
104 | d &= 1;\r |
ca61ee42 |
105 | if ((d&1) && (Pico_mcd->s68k_regs[0x33]&(1<<2))) { elprintf(EL_INTS, "m68k: s68k irq 2"); SekInterruptS68k(2); }\r |
c459aefd |
106 | return;\r |
cc68a136 |
107 | case 1:\r |
672ad671 |
108 | d &= 3;\r |
51a902ae |
109 | if (!(d&1)) Pico_mcd->m.state_flags |= 1; // reset pending, needed to be sure we fetch the right vectors on reset\r |
c459aefd |
110 | if ( (Pico_mcd->m.busreq&1) != (d&1)) dprintf("m68k: s68k reset %i", !(d&1));\r |
111 | if ( (Pico_mcd->m.busreq&2) != (d&2)) dprintf("m68k: s68k brq %i", (d&2)>>1);\r |
51a902ae |
112 | if ((Pico_mcd->m.state_flags&1) && (d&3)==1) {\r |
cc68a136 |
113 | SekResetS68k(); // S68k comes out of RESET or BRQ state\r |
4ff2d527 |
114 | Pico_mcd->m.state_flags&=~1;\r |
115 | dprintf("m68k: resetting s68k, cycles=%i", SekCyclesLeft);\r |
cc68a136 |
116 | }\r |
c459aefd |
117 | Pico_mcd->m.busreq = d;\r |
118 | return;\r |
672ad671 |
119 | case 2:\r |
721cd396 |
120 | dprintf("m68k: prg wp=%02x", d);\r |
672ad671 |
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 |
8f8fe01e |
149 | elprintf(EL_CDPOLL, "s68k poll release, a=%02x", 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 |
8f8fe01e |
169 | elprintf(EL_CDPOLL, "s68k poll release, a=%02x", 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 |
8f8fe01e |
180 | elprintf(EL_CDPOLL, "s68k poll release, a=%02x", a);\r |
7a1f6e45 |
181 | }\r |
182 | #endif\r |
672ad671 |
183 | return;\r |
cc68a136 |
184 | }\r |
185 | \r |
ca61ee42 |
186 | elprintf(EL_UIO, "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 |
ca61ee42 |
195 | // needed mostly for Cyclone, which doesn't always check it's cycle counter\r |
196 | if (SekIsStoppedS68k()) return d;\r |
2433f409 |
197 | // polling detection\r |
198 | if (a == (s68k_poll_adclk&0xff)) {\r |
199 | unsigned int clkdiff = SekCyclesDoneS68k() - (s68k_poll_adclk>>8);\r |
200 | if (clkdiff <= POLL_CYCLES) {\r |
201 | s68k_poll_cnt++;\r |
202 | //printf("-- diff: %u, cnt = %i\n", clkdiff, s68k_poll_cnt);\r |
203 | if (s68k_poll_cnt > POLL_LIMIT) {\r |
204 | SekSetStopS68k(1);\r |
8f8fe01e |
205 | elprintf(EL_CDPOLL, "s68k poll detected @ %06x, a=%02x", SekPcS68k, a);\r |
2433f409 |
206 | }\r |
207 | s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a;\r |
208 | return d;\r |
209 | }\r |
210 | }\r |
211 | s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a;\r |
212 | s68k_poll_cnt = 0;\r |
213 | #endif\r |
214 | return d;\r |
215 | }\r |
cc68a136 |
216 | \r |
913ef4b7 |
217 | #define READ_FONT_DATA(basemask) \\r |
218 | { \\r |
219 | unsigned int fnt = *(unsigned int *)(Pico_mcd->s68k_regs + 0x4c); \\r |
220 | unsigned int col0 = (fnt >> 8) & 0x0f, col1 = (fnt >> 12) & 0x0f; \\r |
221 | if (fnt & (basemask << 0)) d = col1 ; else d = col0; \\r |
222 | if (fnt & (basemask << 1)) d |= col1 << 4; else d |= col0 << 4; \\r |
223 | if (fnt & (basemask << 2)) d |= col1 << 8; else d |= col0 << 8; \\r |
224 | if (fnt & (basemask << 3)) d |= col1 << 12; else d |= col0 << 12; \\r |
225 | }\r |
226 | \r |
cc68a136 |
227 | \r |
4ff2d527 |
228 | #ifndef _ASM_CD_MEMORY_C\r |
229 | static\r |
230 | #endif\r |
231 | u32 s68k_reg_read16(u32 a)\r |
cc68a136 |
232 | {\r |
233 | u32 d=0;\r |
cc68a136 |
234 | \r |
672ad671 |
235 | // dprintf("s68k_regs r%2i: [%02x] @ %06x", realsize&~1, a+(realsize&1), SekPcS68k);\r |
cc68a136 |
236 | \r |
237 | switch (a) {\r |
238 | case 0:\r |
7a1f6e45 |
239 | return ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state\r |
672ad671 |
240 | case 2:\r |
2433f409 |
241 | d = (Pico_mcd->s68k_regs[2]<<8) | (Pico_mcd->s68k_regs[3]&0x1f);\r |
c008977e |
242 | //printf("s68k_regs r3: %02x @%06x\n", (u8)d, SekPcS68k);\r |
2433f409 |
243 | return s68k_poll_detect(a, d);\r |
cc68a136 |
244 | case 6:\r |
7a1f6e45 |
245 | return CDC_Read_Reg();\r |
cc68a136 |
246 | case 8:\r |
7a1f6e45 |
247 | return Read_CDC_Host(1); // Gens returns 0 here on byte reads\r |
cc68a136 |
248 | case 0xC:\r |
4f265db7 |
249 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
4ff2d527 |
250 | dprintf("s68k stopwatch timer read (%04x)", d);\r |
7a1f6e45 |
251 | return d;\r |
d1df8786 |
252 | case 0x30:\r |
7a1f6e45 |
253 | dprintf("s68k int3 timer read (%02x)", Pico_mcd->s68k_regs[31]);\r |
254 | return Pico_mcd->s68k_regs[31];\r |
cc68a136 |
255 | case 0x34: // fader\r |
7a1f6e45 |
256 | return 0; // no busy bit\r |
913ef4b7 |
257 | case 0x50: // font data (check: Lunar 2, Silpheed)\r |
258 | READ_FONT_DATA(0x00100000);\r |
7a1f6e45 |
259 | return d;\r |
913ef4b7 |
260 | case 0x52:\r |
261 | READ_FONT_DATA(0x00010000);\r |
7a1f6e45 |
262 | return d;\r |
913ef4b7 |
263 | case 0x54:\r |
264 | READ_FONT_DATA(0x10000000);\r |
7a1f6e45 |
265 | return d;\r |
913ef4b7 |
266 | case 0x56:\r |
267 | READ_FONT_DATA(0x01000000);\r |
7a1f6e45 |
268 | return d;\r |
cc68a136 |
269 | }\r |
270 | \r |
271 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
272 | \r |
2433f409 |
273 | if (a >= 0x0e && a < 0x30)\r |
274 | return s68k_poll_detect(a, d);\r |
7a1f6e45 |
275 | \r |
cc68a136 |
276 | return d;\r |
277 | }\r |
278 | \r |
4ff2d527 |
279 | #ifndef _ASM_CD_MEMORY_C\r |
280 | static\r |
281 | #endif\r |
282 | void s68k_reg_write8(u32 a, u32 d)\r |
cc68a136 |
283 | {\r |
672ad671 |
284 | //dprintf("s68k_regs w%2i: [%02x] %02x @ %06x", realsize, a, d, SekPcS68k);\r |
cc68a136 |
285 | \r |
48e8482f |
286 | // Warning: d might have upper bits set\r |
cc68a136 |
287 | switch (a) {\r |
672ad671 |
288 | case 2:\r |
289 | return; // only m68k can change WP\r |
fa1e5e29 |
290 | case 3: {\r |
291 | int dold = Pico_mcd->s68k_regs[3];\r |
c008977e |
292 | //printf("s68k_regs w3: %02x @%06x\n", (u8)d, SekPcS68k);\r |
672ad671 |
293 | d &= 0x1d;\r |
4ff2d527 |
294 | d |= dold&0xc2;\r |
d0d47c5b |
295 | if (d&4) {\r |
4ff2d527 |
296 | if ((d ^ dold) & 5) {\r |
297 | d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit\r |
4ff2d527 |
298 | PicoMemResetCD(d);\r |
4ff2d527 |
299 | }\r |
48e8482f |
300 | #ifdef _ASM_CD_MEMORY_C\r |
301 | if ((d ^ dold) & 0x1d)\r |
302 | PicoMemResetCDdecode(d);\r |
303 | #endif\r |
fa1e5e29 |
304 | if (!(dold & 4)) {\r |
305 | dprintf("wram mode 2M->1M");\r |
306 | wram_2M_to_1M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
307 | }\r |
d0d47c5b |
308 | } else {\r |
fa1e5e29 |
309 | if (dold & 4) {\r |
310 | dprintf("wram mode 1M->2M");\r |
4ff2d527 |
311 | if (!(d&1)) { // it didn't set the ret bit, which means it doesn't want to give WRAM to m68k\r |
312 | d &= ~3;\r |
313 | d |= (dold&1) ? 2 : 1; // then give it to the one which had bank0 in 1M mode\r |
314 | }\r |
fa1e5e29 |
315 | wram_1M_to_2M(Pico_mcd->word_ram2M);\r |
4ff2d527 |
316 | PicoMemResetCD(d);\r |
4ff2d527 |
317 | }\r |
318 | else\r |
319 | d |= dold&1;\r |
320 | if (d&1) d &= ~2; // return word RAM to m68k in 2M mode\r |
d0d47c5b |
321 | }\r |
672ad671 |
322 | break;\r |
fa1e5e29 |
323 | }\r |
cc68a136 |
324 | case 4:\r |
325 | dprintf("s68k CDC dest: %x", d&7);\r |
326 | Pico_mcd->s68k_regs[4] = (Pico_mcd->s68k_regs[4]&0xC0) | (d&7); // CDC mode\r |
327 | return;\r |
328 | case 5:\r |
c459aefd |
329 | //dprintf("s68k CDC reg addr: %x", d&0xf);\r |
cc68a136 |
330 | break;\r |
331 | case 7:\r |
332 | CDC_Write_Reg(d);\r |
333 | return;\r |
334 | case 0xa:\r |
335 | dprintf("s68k set CDC dma addr");\r |
336 | break;\r |
d1df8786 |
337 | case 0xc:\r |
4f265db7 |
338 | case 0xd:\r |
d1df8786 |
339 | dprintf("s68k set stopwatch timer");\r |
4f265db7 |
340 | Pico_mcd->m.timer_stopwatch = 0;\r |
341 | return;\r |
1cd356a3 |
342 | case 0xe:\r |
7a1f6e45 |
343 | Pico_mcd->s68k_regs[0xf] = (d>>1) | (d<<7); // ror8 1, Gens note: Dragons lair\r |
1cd356a3 |
344 | return;\r |
d1df8786 |
345 | case 0x31:\r |
4f265db7 |
346 | dprintf("s68k set int3 timer: %02x", d);\r |
48e8482f |
347 | Pico_mcd->m.timer_int3 = (d & 0xff) << 16;\r |
d1df8786 |
348 | break;\r |
cc68a136 |
349 | case 0x33: // IRQ mask\r |
350 | dprintf("s68k irq mask: %02x", d);\r |
351 | if ((d&(1<<4)) && (Pico_mcd->s68k_regs[0x37]&4) && !(Pico_mcd->s68k_regs[0x33]&(1<<4))) {\r |
352 | CDD_Export_Status();\r |
cc68a136 |
353 | }\r |
354 | break;\r |
355 | case 0x34: // fader\r |
356 | Pico_mcd->s68k_regs[a] = (u8) d & 0x7f;\r |
357 | return;\r |
672ad671 |
358 | case 0x36:\r |
359 | return; // d/m bit is unsetable\r |
360 | case 0x37: {\r |
361 | u32 d_old = Pico_mcd->s68k_regs[0x37];\r |
362 | Pico_mcd->s68k_regs[0x37] = d&7;\r |
363 | if ((d&4) && !(d_old&4)) {\r |
cc68a136 |
364 | CDD_Export_Status();\r |
cc68a136 |
365 | }\r |
672ad671 |
366 | return;\r |
367 | }\r |
cc68a136 |
368 | case 0x4b:\r |
369 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
370 | CDD_Import_Command();\r |
371 | return;\r |
372 | }\r |
373 | \r |
1cd356a3 |
374 | if ((a&0x1f0) == 0x10 || (a >= 0x38 && a < 0x42))\r |
cc68a136 |
375 | {\r |
ca61ee42 |
376 | elprintf(EL_UIO, "s68k FIXME: invalid write @ %02x?", a);\r |
cc68a136 |
377 | return;\r |
378 | }\r |
379 | \r |
380 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
381 | }\r |
382 | \r |
383 | \r |
fa1e5e29 |
384 | static u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
385 | {\r |
386 | u32 d=0;\r |
387 | \r |
0ffefdb8 |
388 | #ifndef _ASM_CD_MEMORY_C\r |
672ad671 |
389 | if ((a&0xffffc0)==0xa12000) {\r |
cb4a513a |
390 | d=m68k_reg_read16(a);\r |
672ad671 |
391 | goto end;\r |
392 | }\r |
cc68a136 |
393 | \r |
8022f53d |
394 | if (a==0x400000) {\r |
395 | if (SRam.data != NULL) d=3; // 64k cart\r |
396 | goto end;\r |
397 | }\r |
398 | \r |
399 | if ((a&0xfe0000)==0x600000) {\r |
400 | if (SRam.data != NULL) {\r |
401 | d=SRam.data[((a>>1)&0xffff)+0x2000];\r |
402 | if (realsize == 8) d|=d<<8;\r |
403 | }\r |
404 | goto end;\r |
405 | }\r |
406 | \r |
407 | if (a==0x7ffffe) {\r |
408 | d=Pico_mcd->m.bcram_reg;\r |
409 | goto end;\r |
410 | }\r |
0ffefdb8 |
411 | #endif\r |
8022f53d |
412 | \r |
ca61ee42 |
413 | elprintf(EL_UIO, "m68k FIXME: unusual r%i: %06x @%06x", realsize&~1, (a&0xfffffe)+(realsize&1), SekPc);\r |
cc68a136 |
414 | \r |
0ffefdb8 |
415 | #ifndef _ASM_CD_MEMORY_C\r |
cc68a136 |
416 | end:\r |
0ffefdb8 |
417 | #endif\r |
cc68a136 |
418 | return d;\r |
419 | }\r |
420 | \r |
cc68a136 |
421 | \r |
fa1e5e29 |
422 | static void OtherWrite8End(u32 a, u32 d, int realsize)\r |
cc68a136 |
423 | {\r |
0ffefdb8 |
424 | #ifndef _ASM_CD_MEMORY_C\r |
cb4a513a |
425 | if ((a&0xffffc0)==0xa12000) { m68k_reg_write8(a, d); return; }\r |
cc68a136 |
426 | \r |
8022f53d |
427 | if ((a&0xfe0000)==0x600000) {\r |
428 | if (SRam.data != NULL && (Pico_mcd->m.bcram_reg&1)) {\r |
429 | SRam.data[((a>>1)&0xffff)+0x2000]=d;\r |
430 | SRam.changed = 1;\r |
431 | }\r |
432 | return;\r |
433 | }\r |
434 | \r |
435 | if (a==0x7fffff) {\r |
436 | Pico_mcd->m.bcram_reg=d;\r |
437 | return;\r |
438 | }\r |
0ffefdb8 |
439 | #endif\r |
8022f53d |
440 | \r |
ca61ee42 |
441 | elprintf(EL_UIO, "m68k FIXME: strange w%i: [%06x], %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
442 | }\r |
443 | \r |
0ffefdb8 |
444 | #ifndef _ASM_CD_MEMORY_C\r |
69996cb7 |
445 | #define _CD_MEMORY_C\r |
fa1e5e29 |
446 | #undef _ASM_MEMORY_C\r |
447 | #include "../MemoryCmn.c"\r |
4ff2d527 |
448 | #include "cell_map.c"\r |
0ffefdb8 |
449 | #endif\r |
cc68a136 |
450 | \r |
2433f409 |
451 | \r |
cc68a136 |
452 | // -----------------------------------------------------------------\r |
453 | // Read Rom and read Ram\r |
454 | \r |
4ff2d527 |
455 | #ifdef _ASM_CD_MEMORY_C\r |
0af33fe0 |
456 | u32 PicoReadM68k8(u32 a);\r |
4ff2d527 |
457 | #else\r |
81fda4e8 |
458 | u32 PicoReadM68k8(u32 a)\r |
cc68a136 |
459 | {\r |
460 | u32 d=0;\r |
461 | \r |
cc68a136 |
462 | a&=0xffffff;\r |
463 | \r |
b542be46 |
464 | switch (a >> 17)\r |
465 | {\r |
466 | case 0x00>>1: // BIOS: 000000 - 020000\r |
467 | d = *(u8 *)(Pico_mcd->bios+(a^1));\r |
468 | break;\r |
469 | case 0x02>>1: // prg RAM\r |
470 | if ((Pico_mcd->m.busreq&3)!=1) {\r |
471 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
472 | d = *(prg_bank+((a^1)&0x1ffff));\r |
473 | }\r |
474 | break;\r |
475 | case 0x20>>1: // word RAM: 200000 - 220000\r |
476 | wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r |
477 | a &= 0x1ffff;\r |
478 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
479 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
480 | d = Pico_mcd->word_ram1M[bank][a^1];\r |
481 | } else {\r |
482 | // allow access in any mode, like Gens does\r |
483 | d = Pico_mcd->word_ram2M[a^1];\r |
484 | }\r |
485 | wrdprintf("ret = %02x", (u8)d);\r |
486 | break;\r |
487 | case 0x22>>1: // word RAM: 220000 - 240000\r |
488 | wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r |
489 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
490 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
491 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
492 | d = Pico_mcd->word_ram1M[bank][a^1];\r |
493 | } else {\r |
494 | // allow access in any mode, like Gens does\r |
495 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
496 | }\r |
497 | wrdprintf("ret = %02x", (u8)d);\r |
498 | break;\r |
499 | case 0xc0>>1: case 0xc2>>1: case 0xc4>>1: case 0xc6>>1:\r |
500 | case 0xc8>>1: case 0xca>>1: case 0xcc>>1: case 0xce>>1:\r |
501 | case 0xd0>>1: case 0xd2>>1: case 0xd4>>1: case 0xd6>>1:\r |
502 | case 0xd8>>1: case 0xda>>1: case 0xdc>>1: case 0xde>>1:\r |
503 | // VDP\r |
504 | if ((a&0xe700e0)==0xc00000) {\r |
505 | d=PicoVideoRead(a);\r |
506 | if ((a&1)==0) d>>=8;\r |
507 | }\r |
508 | break;\r |
509 | case 0xe0>>1: case 0xe2>>1: case 0xe4>>1: case 0xe6>>1:\r |
510 | case 0xe8>>1: case 0xea>>1: case 0xec>>1: case 0xee>>1:\r |
511 | case 0xf0>>1: case 0xf2>>1: case 0xf4>>1: case 0xf6>>1:\r |
512 | case 0xf8>>1: case 0xfa>>1: case 0xfc>>1: case 0xfe>>1:\r |
513 | // RAM:\r |
514 | d = *(u8 *)(Pico.ram+((a^1)&0xffff));\r |
515 | break;\r |
516 | default:\r |
517 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); break; } // Z80 Ram\r |
518 | if ((a&0xffffc0)==0xa12000)\r |
519 | rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r |
cc68a136 |
520 | \r |
b542be46 |
521 | d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r |
cc68a136 |
522 | \r |
b542be46 |
523 | if ((a&0xffffc0)==0xa12000)\r |
524 | rdprintf("ret = %02x", (u8)d);\r |
525 | break;\r |
d0d47c5b |
526 | }\r |
527 | \r |
cc68a136 |
528 | \r |
ca61ee42 |
529 | elprintf(EL_IO, "r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
b5e5172d |
530 | #ifdef EMU_CORE_DEBUG\r |
531 | if (a>=Pico.romsize) {\r |
532 | lastread_a = a;\r |
533 | lastread_d[lrp_cyc++&15] = d;\r |
534 | }\r |
cc68a136 |
535 | #endif\r |
0af33fe0 |
536 | return d;\r |
cc68a136 |
537 | }\r |
4ff2d527 |
538 | #endif\r |
cc68a136 |
539 | \r |
ab0607f7 |
540 | \r |
4ff2d527 |
541 | #ifdef _ASM_CD_MEMORY_C\r |
0af33fe0 |
542 | u32 PicoReadM68k16(u32 a);\r |
4ff2d527 |
543 | #else\r |
0af33fe0 |
544 | static u32 PicoReadM68k16(u32 a)\r |
cc68a136 |
545 | {\r |
0af33fe0 |
546 | u32 d=0;\r |
cc68a136 |
547 | \r |
cc68a136 |
548 | a&=0xfffffe;\r |
549 | \r |
b542be46 |
550 | switch (a >> 17)\r |
551 | {\r |
552 | case 0x00>>1: // BIOS: 000000 - 020000\r |
553 | d = *(u16 *)(Pico_mcd->bios+a);\r |
554 | break;\r |
555 | case 0x02>>1: // prg RAM\r |
556 | if ((Pico_mcd->m.busreq&3)!=1) {\r |
557 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
558 | wrdprintf("m68k_prgram r16: [%i,%06x] @%06x", Pico_mcd->s68k_regs[3]>>6, a, SekPc);\r |
559 | d = *(u16 *)(prg_bank+(a&0x1fffe));\r |
560 | wrdprintf("ret = %04x", d);\r |
561 | }\r |
562 | break;\r |
563 | case 0x20>>1: // word RAM: 200000 - 220000\r |
564 | wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r |
565 | a &= 0x1fffe;\r |
566 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
567 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
568 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
569 | } else {\r |
570 | // allow access in any mode, like Gens does\r |
571 | d = *(u16 *)(Pico_mcd->word_ram2M+a);\r |
572 | }\r |
573 | wrdprintf("ret = %04x", d);\r |
574 | break;\r |
575 | case 0x22>>1: // word RAM: 220000 - 240000\r |
576 | wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r |
577 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
578 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
579 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
580 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
581 | } else {\r |
582 | // allow access in any mode, like Gens does\r |
583 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
584 | }\r |
585 | wrdprintf("ret = %04x", d);\r |
586 | break;\r |
587 | case 0xc0>>1: case 0xc2>>1: case 0xc4>>1: case 0xc6>>1:\r |
588 | case 0xc8>>1: case 0xca>>1: case 0xcc>>1: case 0xce>>1:\r |
589 | case 0xd0>>1: case 0xd2>>1: case 0xd4>>1: case 0xd6>>1:\r |
590 | case 0xd8>>1: case 0xda>>1: case 0xdc>>1: case 0xde>>1:\r |
591 | // VDP\r |
592 | if ((a&0xe700e0)==0xc00000)\r |
593 | d=PicoVideoRead(a);\r |
594 | break;\r |
595 | case 0xe0>>1: case 0xe2>>1: case 0xe4>>1: case 0xe6>>1:\r |
596 | case 0xe8>>1: case 0xea>>1: case 0xec>>1: case 0xee>>1:\r |
597 | case 0xf0>>1: case 0xf2>>1: case 0xf4>>1: case 0xf6>>1:\r |
598 | case 0xf8>>1: case 0xfa>>1: case 0xfc>>1: case 0xfe>>1:\r |
599 | // RAM:\r |
600 | d=*(u16 *)(Pico.ram+(a&0xfffe));\r |
601 | break;\r |
602 | default:\r |
603 | if ((a&0xffffc0)==0xa12000)\r |
604 | rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r |
cc68a136 |
605 | \r |
b542be46 |
606 | d = OtherRead16(a, 16);\r |
cc68a136 |
607 | \r |
b542be46 |
608 | if ((a&0xffffc0)==0xa12000)\r |
609 | rdprintf("ret = %04x", d);\r |
610 | break;\r |
d0d47c5b |
611 | }\r |
612 | \r |
cc68a136 |
613 | \r |
ca61ee42 |
614 | elprintf(EL_IO, "r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
b5e5172d |
615 | #ifdef EMU_CORE_DEBUG\r |
616 | if (a>=Pico.romsize) {\r |
617 | lastread_a = a;\r |
618 | lastread_d[lrp_cyc++&15] = d;\r |
619 | }\r |
cc68a136 |
620 | #endif\r |
621 | return d;\r |
622 | }\r |
4ff2d527 |
623 | #endif\r |
cc68a136 |
624 | \r |
ab0607f7 |
625 | \r |
4ff2d527 |
626 | #ifdef _ASM_CD_MEMORY_C\r |
627 | u32 PicoReadM68k32(u32 a);\r |
628 | #else\r |
629 | static u32 PicoReadM68k32(u32 a)\r |
cc68a136 |
630 | {\r |
631 | u32 d=0;\r |
632 | \r |
cc68a136 |
633 | a&=0xfffffe;\r |
634 | \r |
b542be46 |
635 | switch (a >> 17)\r |
636 | {\r |
637 | case 0x00>>1: { // BIOS: 000000 - 020000\r |
638 | u16 *pm=(u16 *)(Pico_mcd->bios+a);\r |
639 | d = (pm[0]<<16)|pm[1];\r |
640 | break;\r |
641 | }\r |
642 | case 0x02>>1: // prg RAM\r |
643 | if ((Pico_mcd->m.busreq&3)!=1) {\r |
644 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
645 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
646 | d = (pm[0]<<16)|pm[1];\r |
647 | }\r |
648 | break;\r |
649 | case 0x20>>1: // word RAM: 200000 - 220000\r |
650 | wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r |
651 | a&=0x1fffe;\r |
652 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
653 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
654 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
655 | d = (pm[0]<<16)|pm[1];\r |
656 | } else {\r |
657 | // allow access in any mode, like Gens does\r |
658 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+a);\r |
659 | d = (pm[0]<<16)|pm[1];\r |
660 | }\r |
661 | wrdprintf("ret = %08x", d);\r |
662 | break;\r |
663 | case 0x22>>1: // word RAM: 220000 - 240000\r |
664 | wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r |
665 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode, cell arranged?\r |
fa1e5e29 |
666 | u32 a1, a2;\r |
b542be46 |
667 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
fa1e5e29 |
668 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
669 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
670 | else a2 = a1 + 2;\r |
671 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16;\r |
672 | d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2);\r |
bf098bc5 |
673 | } else {\r |
b542be46 |
674 | // allow access in any mode, like Gens does\r |
675 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
676 | d = (pm[0]<<16)|pm[1];\r |
bf098bc5 |
677 | }\r |
b542be46 |
678 | wrdprintf("ret = %08x", d);\r |
679 | break;\r |
680 | case 0xc0>>1: case 0xc2>>1: case 0xc4>>1: case 0xc6>>1:\r |
681 | case 0xc8>>1: case 0xca>>1: case 0xcc>>1: case 0xce>>1:\r |
682 | case 0xd0>>1: case 0xd2>>1: case 0xd4>>1: case 0xd6>>1:\r |
683 | case 0xd8>>1: case 0xda>>1: case 0xdc>>1: case 0xde>>1:\r |
684 | // VDP\r |
685 | d = (PicoVideoRead(a)<<16)|PicoVideoRead(a+2);\r |
686 | break;\r |
687 | case 0xe0>>1: case 0xe2>>1: case 0xe4>>1: case 0xe6>>1:\r |
688 | case 0xe8>>1: case 0xea>>1: case 0xec>>1: case 0xee>>1:\r |
689 | case 0xf0>>1: case 0xf2>>1: case 0xf4>>1: case 0xf6>>1:\r |
690 | case 0xf8>>1: case 0xfa>>1: case 0xfc>>1: case 0xfe>>1: {\r |
691 | // RAM:\r |
692 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
693 | d = (pm[0]<<16)|pm[1];\r |
694 | break;\r |
d0d47c5b |
695 | }\r |
b542be46 |
696 | default:\r |
697 | if ((a&0xffffc0)==0xa12000)\r |
698 | rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r |
d0d47c5b |
699 | \r |
b542be46 |
700 | d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
672ad671 |
701 | \r |
b542be46 |
702 | if ((a&0xffffc0)==0xa12000)\r |
703 | rdprintf("ret = %08x", d);\r |
704 | break;\r |
705 | }\r |
cc68a136 |
706 | \r |
672ad671 |
707 | \r |
ca61ee42 |
708 | elprintf(EL_IO, "r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
b5e5172d |
709 | #ifdef EMU_CORE_DEBUG\r |
710 | if (a>=Pico.romsize) {\r |
711 | lastread_a = a;\r |
712 | lastread_d[lrp_cyc++&15] = d;\r |
713 | }\r |
cc68a136 |
714 | #endif\r |
715 | return d;\r |
716 | }\r |
4ff2d527 |
717 | #endif\r |
cc68a136 |
718 | \r |
ab0607f7 |
719 | \r |
cc68a136 |
720 | // -----------------------------------------------------------------\r |
cc68a136 |
721 | \r |
4ff2d527 |
722 | #ifdef _ASM_CD_MEMORY_C\r |
723 | void PicoWriteM68k8(u32 a,u8 d);\r |
724 | #else\r |
81fda4e8 |
725 | void PicoWriteM68k8(u32 a,u8 d)\r |
cc68a136 |
726 | {\r |
ca61ee42 |
727 | elprintf(EL_IO, "w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
b5e5172d |
728 | #ifdef EMU_CORE_DEBUG\r |
729 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
730 | #endif\r |
cc68a136 |
731 | \r |
ab0607f7 |
732 | if ((a&0xe00000)==0xe00000) { // Ram\r |
733 | *(u8 *)(Pico.ram+((a^1)&0xffff)) = d;\r |
734 | return;\r |
735 | }\r |
cc68a136 |
736 | \r |
cc68a136 |
737 | // prg RAM\r |
721cd396 |
738 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r |
672ad671 |
739 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
bf098bc5 |
740 | *(u8 *)(prg_bank+((a^1)&0x1ffff))=d;\r |
cc68a136 |
741 | return;\r |
742 | }\r |
743 | \r |
b542be46 |
744 | a&=0xffffff;\r |
745 | \r |
d0d47c5b |
746 | // word RAM\r |
747 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
748 | wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc);\r |
d0d47c5b |
749 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
750 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
751 | if (a >= 0x220000)\r |
752 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
753 | else a &= 0x1ffff;\r |
754 | *(u8 *)(Pico_mcd->word_ram1M[bank]+(a^1))=d;\r |
d0d47c5b |
755 | } else {\r |
756 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
757 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
758 | }\r |
759 | return;\r |
760 | }\r |
761 | \r |
2433f409 |
762 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
763 | rdprintf("m68k_regs w8: [%02x] %02x @%06x", a&0x3f, d, SekPc);\r |
2433f409 |
764 | m68k_reg_write8(a, d);\r |
765 | return;\r |
766 | }\r |
672ad671 |
767 | \r |
fb9bec94 |
768 | OtherWrite8(a,d);\r |
cc68a136 |
769 | }\r |
4ff2d527 |
770 | #endif\r |
cc68a136 |
771 | \r |
ab0607f7 |
772 | \r |
4ff2d527 |
773 | #ifdef _ASM_CD_MEMORY_C\r |
774 | void PicoWriteM68k16(u32 a,u16 d);\r |
775 | #else\r |
776 | static void PicoWriteM68k16(u32 a,u16 d)\r |
cc68a136 |
777 | {\r |
ca61ee42 |
778 | elprintf(EL_IO, "w16: %06x, %04x", a&0xffffff, d);\r |
b5e5172d |
779 | #ifdef EMU_CORE_DEBUG\r |
780 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
781 | #endif\r |
cc68a136 |
782 | \r |
ab0607f7 |
783 | if ((a&0xe00000)==0xe00000) { // Ram\r |
784 | *(u16 *)(Pico.ram+(a&0xfffe))=d;\r |
785 | return;\r |
786 | }\r |
cc68a136 |
787 | \r |
cc68a136 |
788 | // prg RAM\r |
721cd396 |
789 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r |
672ad671 |
790 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
c008977e |
791 | wrdprintf("m68k_prgram w16: [%i,%06x] %04x @%06x", Pico_mcd->s68k_regs[3]>>6, a, d, SekPc);\r |
cc68a136 |
792 | *(u16 *)(prg_bank+(a&0x1fffe))=d;\r |
793 | return;\r |
794 | }\r |
795 | \r |
b542be46 |
796 | a&=0xfffffe;\r |
797 | \r |
d0d47c5b |
798 | // word RAM\r |
799 | if ((a&0xfc0000)==0x200000) {\r |
913ef4b7 |
800 | wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc);\r |
d0d47c5b |
801 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
802 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
803 | if (a >= 0x220000)\r |
804 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
805 | else a &= 0x1fffe;\r |
806 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a)=d;\r |
d0d47c5b |
807 | } else {\r |
808 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
809 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
810 | }\r |
811 | return;\r |
812 | }\r |
813 | \r |
7a1f6e45 |
814 | // regs\r |
815 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
816 | rdprintf("m68k_regs w16: [%02x] %04x @%06x", a&0x3f, d, SekPc);\r |
7a1f6e45 |
817 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
818 | Pico_mcd->s68k_regs[0xe] = d >> 8;\r |
819 | #ifdef USE_POLL_DETECT\r |
820 | if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) {\r |
6cadc2da |
821 | SekSetStopS68k(0); s68k_poll_adclk = 0;\r |
8f8fe01e |
822 | elprintf(EL_CDPOLL, "s68k poll release, a=%02x", a);\r |
7a1f6e45 |
823 | }\r |
824 | #endif\r |
825 | return;\r |
826 | }\r |
827 | m68k_reg_write8(a, d>>8);\r |
828 | m68k_reg_write8(a+1,d&0xff);\r |
829 | return;\r |
830 | }\r |
cc68a136 |
831 | \r |
b542be46 |
832 | // VDP\r |
833 | if ((a&0xe700e0)==0xc00000) {\r |
834 | PicoVideoWrite(a,(u16)d);\r |
835 | return;\r |
836 | }\r |
837 | \r |
cc68a136 |
838 | OtherWrite16(a,d);\r |
839 | }\r |
4ff2d527 |
840 | #endif\r |
cc68a136 |
841 | \r |
ab0607f7 |
842 | \r |
4ff2d527 |
843 | #ifdef _ASM_CD_MEMORY_C\r |
844 | void PicoWriteM68k32(u32 a,u32 d);\r |
845 | #else\r |
846 | static void PicoWriteM68k32(u32 a,u32 d)\r |
cc68a136 |
847 | {\r |
ca61ee42 |
848 | elprintf(EL_IO, "w32: %06x, %08x", a&0xffffff, d);\r |
b5e5172d |
849 | #ifdef EMU_CORE_DEBUG\r |
850 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
851 | #endif\r |
cc68a136 |
852 | \r |
853 | if ((a&0xe00000)==0xe00000)\r |
854 | {\r |
855 | // Ram:\r |
856 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
857 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
858 | return;\r |
859 | }\r |
860 | \r |
cc68a136 |
861 | // prg RAM\r |
721cd396 |
862 | if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {\r |
672ad671 |
863 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
cc68a136 |
864 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
865 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
866 | return;\r |
867 | }\r |
868 | \r |
b542be46 |
869 | a&=0xfffffe;\r |
870 | \r |
672ad671 |
871 | // word RAM\r |
d0d47c5b |
872 | if ((a&0xfc0000)==0x200000) {\r |
873 | if (d != 0) // don't log clears\r |
913ef4b7 |
874 | wrdprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc);\r |
d0d47c5b |
875 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
fa1e5e29 |
876 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
877 | if (a >= 0x220000) { // cell arranged\r |
878 | u32 a1, a2;\r |
879 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
4ff2d527 |
880 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
881 | else a2 = a1 + 2;\r |
882 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16;\r |
883 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d;\r |
bf098bc5 |
884 | } else {\r |
fa1e5e29 |
885 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
886 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
bf098bc5 |
887 | }\r |
d0d47c5b |
888 | } else {\r |
889 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
890 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
891 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
892 | }\r |
672ad671 |
893 | return;\r |
d0d47c5b |
894 | }\r |
672ad671 |
895 | \r |
2433f409 |
896 | if ((a&0xffffc0)==0xa12000) {\r |
c459aefd |
897 | rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);\r |
2433f409 |
898 | if ((a&0x3e) == 0xe) dprintf("m68k FIXME: w32 [%02x]", a&0x3f);\r |
899 | }\r |
cc68a136 |
900 | \r |
b542be46 |
901 | // VDP\r |
902 | if ((a&0xe700e0)==0xc00000)\r |
903 | {\r |
904 | PicoVideoWrite(a, (u16)(d>>16));\r |
905 | PicoVideoWrite(a+2,(u16)d);\r |
906 | return;\r |
907 | }\r |
908 | \r |
cc68a136 |
909 | OtherWrite16(a, (u16)(d>>16));\r |
910 | OtherWrite16(a+2,(u16)d);\r |
911 | }\r |
4ff2d527 |
912 | #endif\r |
cc68a136 |
913 | \r |
914 | \r |
721cd396 |
915 | // -----------------------------------------------------------------\r |
916 | // S68k\r |
cc68a136 |
917 | // -----------------------------------------------------------------\r |
918 | \r |
4ff2d527 |
919 | #ifdef _ASM_CD_MEMORY_C\r |
0af33fe0 |
920 | u32 PicoReadS68k8(u32 a);\r |
4ff2d527 |
921 | #else\r |
0af33fe0 |
922 | static u32 PicoReadS68k8(u32 a)\r |
cc68a136 |
923 | {\r |
924 | u32 d=0;\r |
925 | \r |
b5e5172d |
926 | #ifdef EMU_CORE_DEBUG\r |
927 | u32 ab=a&0xfffffe;\r |
928 | #endif\r |
cc68a136 |
929 | a&=0xffffff;\r |
930 | \r |
931 | // prg RAM\r |
932 | if (a < 0x80000) {\r |
933 | d = *(Pico_mcd->prg_ram+(a^1));\r |
934 | goto end;\r |
935 | }\r |
936 | \r |
937 | // regs\r |
938 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
939 | a &= 0x1ff;\r |
940 | rdprintf("s68k_regs r8: [%02x] @ %06x", a, SekPcS68k);\r |
2433f409 |
941 | if (a >= 0x0e && a < 0x30) {\r |
942 | d = Pico_mcd->s68k_regs[a];\r |
943 | s68k_poll_detect(a, d);\r |
944 | rdprintf("ret = %02x", (u8)d);\r |
945 | goto end;\r |
946 | }\r |
947 | else if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
948 | d = gfx_cd_read(a&~1);\r |
949 | else d = s68k_reg_read16(a&~1);\r |
950 | if ((a&1)==0) d>>=8;\r |
c459aefd |
951 | rdprintf("ret = %02x", (u8)d);\r |
cc68a136 |
952 | goto end;\r |
953 | }\r |
954 | \r |
d0d47c5b |
955 | // word RAM (2M area)\r |
956 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
fa1e5e29 |
957 | // test: batman returns\r |
913ef4b7 |
958 | wrdprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
959 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
3aa1e148 |
960 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
961 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
962 | if (a&1) d &= 0x0f;\r |
963 | else d >>= 4;\r |
d0d47c5b |
964 | } else {\r |
965 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
966 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
d0d47c5b |
967 | }\r |
913ef4b7 |
968 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
969 | goto end;\r |
970 | }\r |
971 | \r |
972 | // word RAM (1M area)\r |
68cba51e |
973 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
974 | int bank;\r |
913ef4b7 |
975 | wrdprintf("s68k_wram1M r8: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
976 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
977 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
978 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
979 | d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff];\r |
913ef4b7 |
980 | wrdprintf("ret = %02x", (u8)d);\r |
d0d47c5b |
981 | goto end;\r |
982 | }\r |
983 | \r |
4f265db7 |
984 | // PCM\r |
985 | if ((a&0xff8000)==0xff0000) {\r |
ca61ee42 |
986 | elprintf(EL_IO, "s68k_pcm r8: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
987 | a &= 0x7fff;\r |
988 | if (a >= 0x2000)\r |
989 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
990 | else if (a >= 0x20) {\r |
991 | a &= 0x1e;\r |
992 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
993 | if (a & 2) d >>= 8;\r |
994 | }\r |
ca61ee42 |
995 | elprintf(EL_IO, "ret = %02x", (u8)d);\r |
4f265db7 |
996 | goto end;\r |
997 | }\r |
998 | \r |
ab0607f7 |
999 | // bram\r |
1000 | if ((a&0xff0000)==0xfe0000) {\r |
1001 | d = Pico_mcd->bram[(a>>1)&0x1fff];\r |
1002 | goto end;\r |
1003 | }\r |
1004 | \r |
ca61ee42 |
1005 | elprintf(EL_UIO, "s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
cc68a136 |
1006 | \r |
1007 | end:\r |
1008 | \r |
ca61ee42 |
1009 | elprintf(EL_IO, "s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
b5e5172d |
1010 | #ifdef EMU_CORE_DEBUG\r |
1011 | lastread_a = ab;\r |
1012 | lastread_d[lrp_cyc++&15] = d;\r |
cc68a136 |
1013 | #endif\r |
0af33fe0 |
1014 | return d;\r |
cc68a136 |
1015 | }\r |
4ff2d527 |
1016 | #endif\r |
cc68a136 |
1017 | \r |
ab0607f7 |
1018 | \r |
4ff2d527 |
1019 | #ifdef _ASM_CD_MEMORY_C\r |
0af33fe0 |
1020 | u32 PicoReadS68k16(u32 a);\r |
4ff2d527 |
1021 | #else\r |
0af33fe0 |
1022 | static u32 PicoReadS68k16(u32 a)\r |
cc68a136 |
1023 | {\r |
4f265db7 |
1024 | u32 d=0;\r |
cc68a136 |
1025 | \r |
b5e5172d |
1026 | #ifdef EMU_CORE_DEBUG\r |
1027 | u32 ab=a&0xfffffe;\r |
1028 | #endif\r |
cc68a136 |
1029 | a&=0xfffffe;\r |
1030 | \r |
1031 | // prg RAM\r |
1032 | if (a < 0x80000) {\r |
c008977e |
1033 | wrdprintf("s68k_prgram r16: [%06x] @%06x", a, SekPcS68k);\r |
cc68a136 |
1034 | d = *(u16 *)(Pico_mcd->prg_ram+a);\r |
c008977e |
1035 | wrdprintf("ret = %04x", d);\r |
cc68a136 |
1036 | goto end;\r |
1037 | }\r |
1038 | \r |
1039 | // regs\r |
1040 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1041 | a &= 0x1fe;\r |
1042 | rdprintf("s68k_regs r16: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
1043 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
1044 | d = gfx_cd_read(a);\r |
1045 | else d = s68k_reg_read16(a);\r |
c459aefd |
1046 | rdprintf("ret = %04x", d);\r |
cc68a136 |
1047 | goto end;\r |
1048 | }\r |
1049 | \r |
d0d47c5b |
1050 | // word RAM (2M area)\r |
1051 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
1052 | wrdprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
1053 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
3aa1e148 |
1054 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1055 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
1056 | d |= d << 4; d &= ~0xf0;\r |
d0d47c5b |
1057 | } else {\r |
1058 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1059 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
1060 | }\r |
913ef4b7 |
1061 | wrdprintf("ret = %04x", d);\r |
d0d47c5b |
1062 | goto end;\r |
1063 | }\r |
1064 | \r |
1065 | // word RAM (1M area)\r |
68cba51e |
1066 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1067 | int bank;\r |
913ef4b7 |
1068 | wrdprintf("s68k_wram1M r16: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
1069 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1070 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
1071 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1072 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
913ef4b7 |
1073 | wrdprintf("ret = %04x", d);\r |
ab0607f7 |
1074 | goto end;\r |
1075 | }\r |
1076 | \r |
1077 | // bram\r |
1078 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
1079 | dprintf("FIXME: s68k_bram r16: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
1080 | a = (a>>1)&0x1fff;\r |
4f265db7 |
1081 | d = Pico_mcd->bram[a++]; // Gens does little endian here, and so do we..\r |
4ff2d527 |
1082 | d|= Pico_mcd->bram[a++] << 8; // This is most likely wrong\r |
ab0607f7 |
1083 | dprintf("ret = %04x", d);\r |
d0d47c5b |
1084 | goto end;\r |
1085 | }\r |
1086 | \r |
4f265db7 |
1087 | // PCM\r |
1088 | if ((a&0xff8000)==0xff0000) {\r |
4ff2d527 |
1089 | dprintf("FIXME: s68k_pcm r16: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
1090 | a &= 0x7fff;\r |
1091 | if (a >= 0x2000)\r |
1092 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
1093 | else if (a >= 0x20) {\r |
1094 | a &= 0x1e;\r |
1095 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
1096 | if (a & 2) d >>= 8;\r |
1097 | }\r |
1098 | dprintf("ret = %04x", d);\r |
1099 | goto end;\r |
1100 | }\r |
1101 | \r |
ca61ee42 |
1102 | elprintf(EL_UIO, "s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
cc68a136 |
1103 | \r |
1104 | end:\r |
1105 | \r |
ca61ee42 |
1106 | elprintf(EL_IO, "s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
b5e5172d |
1107 | #ifdef EMU_CORE_DEBUG\r |
1108 | lastread_a = ab;\r |
1109 | lastread_d[lrp_cyc++&15] = d;\r |
cc68a136 |
1110 | #endif\r |
1111 | return d;\r |
1112 | }\r |
4ff2d527 |
1113 | #endif\r |
cc68a136 |
1114 | \r |
ab0607f7 |
1115 | \r |
4ff2d527 |
1116 | #ifdef _ASM_CD_MEMORY_C\r |
1117 | u32 PicoReadS68k32(u32 a);\r |
1118 | #else\r |
1119 | static u32 PicoReadS68k32(u32 a)\r |
cc68a136 |
1120 | {\r |
1121 | u32 d=0;\r |
1122 | \r |
b5e5172d |
1123 | #ifdef EMU_CORE_DEBUG\r |
1124 | u32 ab=a&0xfffffe;\r |
1125 | #endif\r |
cc68a136 |
1126 | a&=0xfffffe;\r |
1127 | \r |
1128 | // prg RAM\r |
1129 | if (a < 0x80000) {\r |
1130 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
1131 | d = (pm[0]<<16)|pm[1];\r |
1132 | goto end;\r |
1133 | }\r |
1134 | \r |
1135 | // regs\r |
1136 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1137 | a &= 0x1fe;\r |
1138 | rdprintf("s68k_regs r32: [%02x] @ %06x", a, SekPcS68k);\r |
913ef4b7 |
1139 | if (a >= 0x58 && a < 0x68)\r |
cb4a513a |
1140 | d = (gfx_cd_read(a)<<16)|gfx_cd_read(a+2);\r |
1141 | else d = (s68k_reg_read16(a)<<16)|s68k_reg_read16(a+2);\r |
c459aefd |
1142 | rdprintf("ret = %08x", d);\r |
cc68a136 |
1143 | goto end;\r |
1144 | }\r |
1145 | \r |
d0d47c5b |
1146 | // word RAM (2M area)\r |
1147 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
913ef4b7 |
1148 | wrdprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k);\r |
fa1e5e29 |
1149 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
3aa1e148 |
1150 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1151 | a >>= 1;\r |
1152 | d = Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] << 16;\r |
1153 | d |= Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff];\r |
1154 | d |= d << 4; d &= 0x0f0f0f0f;\r |
d0d47c5b |
1155 | } else {\r |
1156 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1157 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
d0d47c5b |
1158 | }\r |
913ef4b7 |
1159 | wrdprintf("ret = %08x", d);\r |
d0d47c5b |
1160 | goto end;\r |
1161 | }\r |
1162 | \r |
1163 | // word RAM (1M area)\r |
68cba51e |
1164 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1165 | int bank;\r |
dca310c4 |
1166 | u16 *pm;\r |
913ef4b7 |
1167 | wrdprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPcS68k);\r |
68cba51e |
1168 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1169 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
1170 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
dca310c4 |
1171 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
913ef4b7 |
1172 | wrdprintf("ret = %08x", d);\r |
ab0607f7 |
1173 | goto end;\r |
1174 | }\r |
1175 | \r |
4f265db7 |
1176 | // PCM\r |
1177 | if ((a&0xff8000)==0xff0000) {\r |
2433f409 |
1178 | dprintf("s68k_pcm r32: [%06x] @%06x", a, SekPcS68k);\r |
4f265db7 |
1179 | a &= 0x7fff;\r |
1180 | if (a >= 0x2000) {\r |
1181 | a >>= 1;\r |
1182 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] << 16;\r |
1183 | d |= Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff];\r |
1184 | } else if (a >= 0x20) {\r |
1185 | a &= 0x1e;\r |
1186 | if (a & 2) {\r |
1187 | a >>= 2;\r |
1188 | d = (Pico_mcd->pcm.ch[a].addr >> (PCM_STEP_SHIFT-8)) & 0xff0000;\r |
1189 | d |= (Pico_mcd->pcm.ch[(a+1)&7].addr >> PCM_STEP_SHIFT) & 0xff;\r |
1190 | } else {\r |
1191 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
1192 | d = ((d<<16)&0xff0000) | ((d>>8)&0xff); // PCM chip is LE\r |
1193 | }\r |
1194 | }\r |
1195 | dprintf("ret = %08x", d);\r |
1196 | goto end;\r |
1197 | }\r |
1198 | \r |
ab0607f7 |
1199 | // bram\r |
1200 | if ((a&0xff0000)==0xfe0000) {\r |
4ff2d527 |
1201 | dprintf("FIXME: s68k_bram r32: [%06x] @%06x", a, SekPcS68k);\r |
ab0607f7 |
1202 | a = (a>>1)&0x1fff;\r |
1203 | d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion..\r |
1204 | d|= Pico_mcd->bram[a++] << 24;\r |
1205 | d|= Pico_mcd->bram[a++];\r |
1206 | d|= Pico_mcd->bram[a++] << 8;\r |
1207 | dprintf("ret = %08x", d);\r |
d0d47c5b |
1208 | goto end;\r |
1209 | }\r |
1210 | \r |
ca61ee42 |
1211 | elprintf(EL_UIO, "s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
cc68a136 |
1212 | \r |
1213 | end:\r |
1214 | \r |
ca61ee42 |
1215 | elprintf(EL_IO, "s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
b5e5172d |
1216 | #ifdef EMU_CORE_DEBUG\r |
1217 | if (ab > 0x78) { // not vectors and stuff\r |
1218 | lastread_a = ab;\r |
1219 | lastread_d[lrp_cyc++&15] = d;\r |
1220 | }\r |
cc68a136 |
1221 | #endif\r |
1222 | return d;\r |
1223 | }\r |
4ff2d527 |
1224 | #endif\r |
cc68a136 |
1225 | \r |
ab0607f7 |
1226 | \r |
a4030801 |
1227 | #ifndef _ASM_CD_MEMORY_C\r |
0a051f55 |
1228 | /* check: jaguar xj 220 (draws entire world using decode) */\r |
1229 | static void decode_write8(u32 a, u8 d, int r3)\r |
1230 | {\r |
3aa1e148 |
1231 | u8 *pd = Pico_mcd->word_ram1M[(r3 & 1)^1] + (((a>>1)^1)&0x1ffff);\r |
0a051f55 |
1232 | u8 oldmask = (a&1) ? 0xf0 : 0x0f;\r |
1233 | \r |
0a051f55 |
1234 | r3 &= 0x18;\r |
1235 | d &= 0x0f;\r |
1236 | if (!(a&1)) d <<= 4;\r |
1237 | \r |
0a051f55 |
1238 | if (r3 == 8) {\r |
1239 | if ((!(*pd & (~oldmask))) && d) goto do_it;\r |
1240 | } else if (r3 > 8) {\r |
1241 | if (d) goto do_it;\r |
1242 | } else {\r |
1243 | goto do_it;\r |
1244 | }\r |
1245 | \r |
1246 | return;\r |
1247 | do_it:\r |
1248 | *pd = d | (*pd & oldmask);\r |
1249 | }\r |
1250 | \r |
1251 | \r |
1252 | static void decode_write16(u32 a, u16 d, int r3)\r |
1253 | {\r |
3aa1e148 |
1254 | u8 *pd = Pico_mcd->word_ram1M[(r3 & 1)^1] + (((a>>1)^1)&0x1ffff);\r |
0a051f55 |
1255 | \r |
1256 | //if ((a & 0x3ffff) < 0x28000) return;\r |
1257 | \r |
1258 | r3 &= 0x18;\r |
1259 | d &= 0x0f0f;\r |
1260 | d |= d >> 4;\r |
1261 | \r |
1262 | if (r3 == 8) {\r |
1263 | u8 dold = *pd;\r |
1264 | if (!(dold & 0xf0)) dold |= d & 0xf0;\r |
1265 | if (!(dold & 0x0f)) dold |= d & 0x0f;\r |
1266 | *pd = dold;\r |
1267 | } else if (r3 > 8) {\r |
1268 | u8 dold = *pd;\r |
1269 | if (!(d & 0xf0)) d |= dold & 0xf0;\r |
1270 | if (!(d & 0x0f)) d |= dold & 0x0f;\r |
1271 | *pd = d;\r |
1272 | } else {\r |
1273 | *pd = d;\r |
1274 | }\r |
0a051f55 |
1275 | }\r |
a4030801 |
1276 | #endif\r |
0a051f55 |
1277 | \r |
cc68a136 |
1278 | // -----------------------------------------------------------------\r |
1279 | \r |
4ff2d527 |
1280 | #ifdef _ASM_CD_MEMORY_C\r |
1281 | void PicoWriteS68k8(u32 a,u8 d);\r |
1282 | #else\r |
1283 | static void PicoWriteS68k8(u32 a,u8 d)\r |
cc68a136 |
1284 | {\r |
ca61ee42 |
1285 | elprintf(EL_IO, "s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
cc68a136 |
1286 | \r |
1287 | a&=0xffffff;\r |
1288 | \r |
b5e5172d |
1289 | #ifdef EMU_CORE_DEBUG\r |
1290 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
1291 | #endif\r |
1292 | \r |
cc68a136 |
1293 | // prg RAM\r |
1294 | if (a < 0x80000) {\r |
1295 | u8 *pm=(u8 *)(Pico_mcd->prg_ram+(a^1));\r |
721cd396 |
1296 | if (a >= (Pico_mcd->s68k_regs[2]<<8)) *pm=d;\r |
cc68a136 |
1297 | return;\r |
1298 | }\r |
1299 | \r |
1300 | // regs\r |
1301 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1302 | a &= 0x1ff;\r |
1303 | rdprintf("s68k_regs w8: [%02x] %02x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1304 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1305 | gfx_cd_write16(a&~1, (d<<8)|d);\r |
cb4a513a |
1306 | else s68k_reg_write8(a,d);\r |
cc68a136 |
1307 | return;\r |
1308 | }\r |
1309 | \r |
d0d47c5b |
1310 | // word RAM (2M area)\r |
1311 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1312 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1313 | wrdprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1314 | if (r3 & 4) { // 1M decode mode?\r |
1315 | decode_write8(a, d, r3);\r |
d0d47c5b |
1316 | } else {\r |
1317 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1318 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
d0d47c5b |
1319 | }\r |
1320 | return;\r |
1321 | }\r |
1322 | \r |
1323 | // word RAM (1M area)\r |
68cba51e |
1324 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
1325 | // Wing Commander tries to write here in wrong mode\r |
fa1e5e29 |
1326 | int bank;\r |
d0d47c5b |
1327 | if (d)\r |
913ef4b7 |
1328 | wrdprintf("s68k_wram1M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1329 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1330 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
1331 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1332 | *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d;\r |
d0d47c5b |
1333 | return;\r |
1334 | }\r |
1335 | \r |
4f265db7 |
1336 | // PCM\r |
1337 | if ((a&0xff8000)==0xff0000) {\r |
1338 | a &= 0x7fff;\r |
1339 | if (a >= 0x2000)\r |
1340 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1341 | else if (a < 0x12)\r |
1342 | pcm_write(a>>1, d);\r |
1343 | return;\r |
1344 | }\r |
1345 | \r |
ab0607f7 |
1346 | // bram\r |
1347 | if ((a&0xff0000)==0xfe0000) {\r |
1348 | Pico_mcd->bram[(a>>1)&0x1fff] = d;\r |
1349 | SRam.changed = 1;\r |
1350 | return;\r |
1351 | }\r |
1352 | \r |
ca61ee42 |
1353 | elprintf(EL_UIO, "s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
cc68a136 |
1354 | }\r |
4ff2d527 |
1355 | #endif\r |
cc68a136 |
1356 | \r |
ab0607f7 |
1357 | \r |
4ff2d527 |
1358 | #ifdef _ASM_CD_MEMORY_C\r |
1359 | void PicoWriteS68k16(u32 a,u16 d);\r |
1360 | #else\r |
1361 | static void PicoWriteS68k16(u32 a,u16 d)\r |
cc68a136 |
1362 | {\r |
ca61ee42 |
1363 | elprintf(EL_IO, "s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
cc68a136 |
1364 | \r |
1365 | a&=0xfffffe;\r |
1366 | \r |
b5e5172d |
1367 | #ifdef EMU_CORE_DEBUG\r |
1368 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
1369 | #endif\r |
1370 | \r |
cc68a136 |
1371 | // prg RAM\r |
1372 | if (a < 0x80000) {\r |
c008977e |
1373 | wrdprintf("s68k_prgram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
721cd396 |
1374 | if (a >= (Pico_mcd->s68k_regs[2]<<8)) // needed for Dungeon Explorer\r |
1375 | *(u16 *)(Pico_mcd->prg_ram+a)=d;\r |
cc68a136 |
1376 | return;\r |
1377 | }\r |
1378 | \r |
1379 | // regs\r |
1380 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1381 | a &= 0x1fe;\r |
1382 | rdprintf("s68k_regs w16: [%02x] %04x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1383 | if (a >= 0x58 && a < 0x68)\r |
48e8482f |
1384 | gfx_cd_write16(a, d);\r |
cb4a513a |
1385 | else {\r |
1cd356a3 |
1386 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
1387 | Pico_mcd->s68k_regs[0xf] = d;\r |
4ff2d527 |
1388 | return;\r |
1cd356a3 |
1389 | }\r |
cb4a513a |
1390 | s68k_reg_write8(a, d>>8);\r |
1391 | s68k_reg_write8(a+1,d&0xff);\r |
1392 | }\r |
cc68a136 |
1393 | return;\r |
1394 | }\r |
1395 | \r |
d0d47c5b |
1396 | // word RAM (2M area)\r |
1397 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1398 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1399 | wrdprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1400 | if (r3 & 4) { // 1M decode mode?\r |
1401 | decode_write16(a, d, r3);\r |
d0d47c5b |
1402 | } else {\r |
1403 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1404 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
d0d47c5b |
1405 | }\r |
1406 | return;\r |
1407 | }\r |
1408 | \r |
1409 | // word RAM (1M area)\r |
68cba51e |
1410 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1411 | int bank;\r |
d0d47c5b |
1412 | if (d)\r |
913ef4b7 |
1413 | wrdprintf("s68k_wram1M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1414 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1415 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
1416 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1417 | *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d;\r |
d0d47c5b |
1418 | return;\r |
1419 | }\r |
1420 | \r |
4f265db7 |
1421 | // PCM\r |
1422 | if ((a&0xff8000)==0xff0000) {\r |
1423 | a &= 0x7fff;\r |
1424 | if (a >= 0x2000)\r |
1425 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
1426 | else if (a < 0x12)\r |
1427 | pcm_write(a>>1, d & 0xff);\r |
1428 | return;\r |
1429 | }\r |
1430 | \r |
ab0607f7 |
1431 | // bram\r |
1432 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1433 | dprintf("s68k_bram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1434 | a = (a>>1)&0x1fff;\r |
1435 | Pico_mcd->bram[a++] = d; // Gens does little endian here, an so do we..\r |
1436 | Pico_mcd->bram[a++] = d >> 8;\r |
1437 | SRam.changed = 1;\r |
1438 | return;\r |
1439 | }\r |
1440 | \r |
ca61ee42 |
1441 | elprintf(EL_UIO, "s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
cc68a136 |
1442 | }\r |
4ff2d527 |
1443 | #endif\r |
cc68a136 |
1444 | \r |
ab0607f7 |
1445 | \r |
4ff2d527 |
1446 | #ifdef _ASM_CD_MEMORY_C\r |
1447 | void PicoWriteS68k32(u32 a,u32 d);\r |
1448 | #else\r |
1449 | static void PicoWriteS68k32(u32 a,u32 d)\r |
cc68a136 |
1450 | {\r |
ca61ee42 |
1451 | elprintf(EL_IO, "s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
cc68a136 |
1452 | \r |
1453 | a&=0xfffffe;\r |
1454 | \r |
b5e5172d |
1455 | #ifdef EMU_CORE_DEBUG\r |
1456 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
1457 | #endif\r |
1458 | \r |
cc68a136 |
1459 | // prg RAM\r |
1460 | if (a < 0x80000) {\r |
721cd396 |
1461 | if (a >= (Pico_mcd->s68k_regs[2]<<8)) {\r |
1462 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
1463 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1464 | }\r |
cc68a136 |
1465 | return;\r |
1466 | }\r |
1467 | \r |
1468 | // regs\r |
1469 | if ((a&0xfffe00) == 0xff8000) {\r |
cb4a513a |
1470 | a &= 0x1fe;\r |
1471 | rdprintf("s68k_regs w32: [%02x] %08x @ %06x", a, d, SekPcS68k);\r |
913ef4b7 |
1472 | if (a >= 0x58 && a < 0x68) {\r |
48e8482f |
1473 | gfx_cd_write16(a, d>>16);\r |
1474 | gfx_cd_write16(a+2, d&0xffff);\r |
cb4a513a |
1475 | } else {\r |
2433f409 |
1476 | if ((a&0x1fe) == 0xe) dprintf("s68k FIXME: w32 [%02x]", a&0x3f);\r |
cb4a513a |
1477 | s68k_reg_write8(a, d>>24);\r |
1478 | s68k_reg_write8(a+1,(d>>16)&0xff);\r |
1479 | s68k_reg_write8(a+2,(d>>8) &0xff);\r |
1480 | s68k_reg_write8(a+3, d &0xff);\r |
1481 | }\r |
cc68a136 |
1482 | return;\r |
1483 | }\r |
1484 | \r |
d0d47c5b |
1485 | // word RAM (2M area)\r |
1486 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
0a051f55 |
1487 | int r3 = Pico_mcd->s68k_regs[3];\r |
913ef4b7 |
1488 | wrdprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
0a051f55 |
1489 | if (r3 & 4) { // 1M decode mode?\r |
1490 | decode_write16(a , d >> 16, r3);\r |
1491 | decode_write16(a+2, d , r3);\r |
d0d47c5b |
1492 | } else {\r |
1493 | // allow access in any mode, like Gens does\r |
fa1e5e29 |
1494 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
d0d47c5b |
1495 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
1496 | }\r |
1497 | return;\r |
1498 | }\r |
1499 | \r |
1500 | // word RAM (1M area)\r |
68cba51e |
1501 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
fa1e5e29 |
1502 | int bank;\r |
1503 | u16 *pm;\r |
d0d47c5b |
1504 | if (d)\r |
913ef4b7 |
1505 | wrdprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
68cba51e |
1506 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
1507 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
3aa1e148 |
1508 | bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1509 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1510 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
d0d47c5b |
1511 | return;\r |
1512 | }\r |
ab0607f7 |
1513 | \r |
4f265db7 |
1514 | // PCM\r |
1515 | if ((a&0xff8000)==0xff0000) {\r |
1516 | a &= 0x7fff;\r |
1517 | if (a >= 0x2000) {\r |
1518 | a >>= 1;\r |
1519 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] = (d >> 16);\r |
1520 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff] = d;\r |
1521 | } else if (a < 0x12) {\r |
1522 | a >>= 1;\r |
1523 | pcm_write(a, (d>>16) & 0xff);\r |
1524 | pcm_write(a+1, d & 0xff);\r |
1525 | }\r |
1526 | return;\r |
1527 | }\r |
1528 | \r |
ab0607f7 |
1529 | // bram\r |
1530 | if ((a&0xff0000)==0xfe0000) {\r |
1cd356a3 |
1531 | dprintf("s68k_bram w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
ab0607f7 |
1532 | a = (a>>1)&0x1fff;\r |
1533 | Pico_mcd->bram[a++] = d >> 16; // middle endian? verify?\r |
1534 | Pico_mcd->bram[a++] = d >> 24;\r |
1535 | Pico_mcd->bram[a++] = d;\r |
1536 | Pico_mcd->bram[a++] = d >> 8;\r |
1537 | SRam.changed = 1;\r |
1538 | return;\r |
1539 | }\r |
1540 | \r |
ca61ee42 |
1541 | elprintf(EL_UIO, "s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
cc68a136 |
1542 | }\r |
4ff2d527 |
1543 | #endif\r |
cc68a136 |
1544 | \r |
1545 | \r |
1546 | // -----------------------------------------------------------------\r |
1547 | \r |
b837b69b |
1548 | \r |
3aa1e148 |
1549 | #ifdef EMU_C68K\r |
b837b69b |
1550 | static __inline int PicoMemBaseM68k(u32 pc)\r |
1551 | {\r |
fa1e5e29 |
1552 | if ((pc&0xe00000)==0xe00000)\r |
1553 | return (int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r |
b837b69b |
1554 | \r |
1555 | if (pc < 0x20000)\r |
fa1e5e29 |
1556 | return (int)Pico_mcd->bios; // Program Counter in BIOS\r |
1557 | \r |
1558 | if ((pc&0xfc0000)==0x200000)\r |
b837b69b |
1559 | {\r |
fa1e5e29 |
1560 | if (!(Pico_mcd->s68k_regs[3]&4))\r |
1561 | return (int)Pico_mcd->word_ram2M - 0x200000; // Program Counter in Word Ram\r |
1562 | if (pc < 0x220000) {\r |
3aa1e148 |
1563 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
fa1e5e29 |
1564 | return (int)Pico_mcd->word_ram1M[bank] - 0x200000;\r |
1565 | }\r |
b837b69b |
1566 | }\r |
1567 | \r |
fa1e5e29 |
1568 | // Error - Program Counter is invalid\r |
ca61ee42 |
1569 | elprintf(EL_ANOMALY, "m68k FIXME: unhandled jump to %06x", pc);\r |
fa1e5e29 |
1570 | \r |
1571 | return (int)Pico_mcd->bios;\r |
b837b69b |
1572 | }\r |
1573 | \r |
1574 | \r |
1575 | static u32 PicoCheckPcM68k(u32 pc)\r |
1576 | {\r |
3aa1e148 |
1577 | pc-=PicoCpuCM68k.membase; // Get real pc\r |
b837b69b |
1578 | pc&=0xfffffe;\r |
1579 | \r |
3aa1e148 |
1580 | PicoCpuCM68k.membase=PicoMemBaseM68k(pc);\r |
b837b69b |
1581 | \r |
3aa1e148 |
1582 | return PicoCpuCM68k.membase+pc;\r |
b837b69b |
1583 | }\r |
1584 | \r |
1585 | \r |
1586 | static __inline int PicoMemBaseS68k(u32 pc)\r |
1587 | {\r |
fa1e5e29 |
1588 | if (pc < 0x80000) // PRG RAM\r |
1589 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1590 | \r |
fa1e5e29 |
1591 | if ((pc&0xfc0000)==0x080000) // WORD RAM 2M area (assume we are in the right mode..)\r |
1592 | return (int)Pico_mcd->word_ram2M - 0x080000;\r |
1593 | \r |
1594 | if ((pc&0xfe0000)==0x0c0000) { // word RAM 1M area\r |
3aa1e148 |
1595 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1596 | return (int)Pico_mcd->word_ram1M[bank] - 0x0c0000;\r |
b837b69b |
1597 | }\r |
1598 | \r |
fa1e5e29 |
1599 | // Error - Program Counter is invalid\r |
ca61ee42 |
1600 | elprintf(EL_ANOMALY, "s68k FIXME: unhandled jump to %06x", pc);\r |
fa1e5e29 |
1601 | \r |
1602 | return (int)Pico_mcd->prg_ram;\r |
b837b69b |
1603 | }\r |
1604 | \r |
1605 | \r |
1606 | static u32 PicoCheckPcS68k(u32 pc)\r |
1607 | {\r |
3aa1e148 |
1608 | pc-=PicoCpuCS68k.membase; // Get real pc\r |
b837b69b |
1609 | pc&=0xfffffe;\r |
1610 | \r |
3aa1e148 |
1611 | PicoCpuCS68k.membase=PicoMemBaseS68k(pc);\r |
b837b69b |
1612 | \r |
3aa1e148 |
1613 | return PicoCpuCS68k.membase+pc;\r |
b837b69b |
1614 | }\r |
1615 | #endif\r |
1616 | \r |
3aa1e148 |
1617 | #ifndef _ASM_CD_MEMORY_C\r |
1618 | void PicoMemResetCD(int r3)\r |
1619 | {\r |
1620 | #ifdef EMU_F68K\r |
1621 | // update fetchmap..\r |
1622 | int i;\r |
1623 | if (!(r3 & 4))\r |
1624 | {\r |
1625 | for (i = M68K_FETCHBANK1*2/16; (i<<(24-FAMEC_FETCHBITS)) < 0x240000; i++)\r |
1626 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram2M - 0x200000;\r |
1627 | }\r |
1628 | else\r |
1629 | {\r |
1630 | for (i = M68K_FETCHBANK1*2/16; (i<<(24-FAMEC_FETCHBITS)) < 0x220000; i++)\r |
1631 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram1M[r3 & 1] - 0x200000;\r |
1632 | for (i = M68K_FETCHBANK1*0x0c/0x100; (i<<(24-FAMEC_FETCHBITS)) < 0x0e0000; i++)\r |
1633 | PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram1M[(r3&1)^1] - 0x0c0000;\r |
1634 | }\r |
1635 | #endif\r |
1636 | }\r |
1637 | #endif\r |
b837b69b |
1638 | \r |
9037e45d |
1639 | #ifdef EMU_M68K\r |
1640 | static void m68k_mem_setup_cd(void);\r |
1641 | #endif\r |
1642 | \r |
eff55556 |
1643 | PICO_INTERNAL void PicoMemSetupCD(void)\r |
b837b69b |
1644 | {\r |
f53f286a |
1645 | // additional handlers for common code\r |
1646 | PicoRead16Hook = OtherRead16End;\r |
1647 | PicoWrite8Hook = OtherWrite8End;\r |
1648 | \r |
b837b69b |
1649 | #ifdef EMU_C68K\r |
1650 | // Setup m68k memory callbacks:\r |
3aa1e148 |
1651 | PicoCpuCM68k.checkpc=PicoCheckPcM68k;\r |
1652 | PicoCpuCM68k.fetch8 =PicoCpuCM68k.read8 =PicoReadM68k8;\r |
1653 | PicoCpuCM68k.fetch16=PicoCpuCM68k.read16=PicoReadM68k16;\r |
1654 | PicoCpuCM68k.fetch32=PicoCpuCM68k.read32=PicoReadM68k32;\r |
1655 | PicoCpuCM68k.write8 =PicoWriteM68k8;\r |
1656 | PicoCpuCM68k.write16=PicoWriteM68k16;\r |
1657 | PicoCpuCM68k.write32=PicoWriteM68k32;\r |
b837b69b |
1658 | // s68k\r |
3aa1e148 |
1659 | PicoCpuCS68k.checkpc=PicoCheckPcS68k;\r |
1660 | PicoCpuCS68k.fetch8 =PicoCpuCS68k.read8 =PicoReadS68k8;\r |
1661 | PicoCpuCS68k.fetch16=PicoCpuCS68k.read16=PicoReadS68k16;\r |
1662 | PicoCpuCS68k.fetch32=PicoCpuCS68k.read32=PicoReadS68k32;\r |
1663 | PicoCpuCS68k.write8 =PicoWriteS68k8;\r |
1664 | PicoCpuCS68k.write16=PicoWriteS68k16;\r |
1665 | PicoCpuCS68k.write32=PicoWriteS68k32;\r |
b837b69b |
1666 | #endif\r |
3aa1e148 |
1667 | #ifdef EMU_F68K\r |
1668 | // m68k\r |
1669 | PicoCpuFM68k.read_byte =PicoReadM68k8;\r |
1670 | PicoCpuFM68k.read_word =PicoReadM68k16;\r |
1671 | PicoCpuFM68k.read_long =PicoReadM68k32;\r |
1672 | PicoCpuFM68k.write_byte=PicoWriteM68k8;\r |
1673 | PicoCpuFM68k.write_word=PicoWriteM68k16;\r |
1674 | PicoCpuFM68k.write_long=PicoWriteM68k32;\r |
1675 | // s68k\r |
1676 | PicoCpuFS68k.read_byte =PicoReadS68k8;\r |
1677 | PicoCpuFS68k.read_word =PicoReadS68k16;\r |
1678 | PicoCpuFS68k.read_long =PicoReadS68k32;\r |
1679 | PicoCpuFS68k.write_byte=PicoWriteS68k8;\r |
1680 | PicoCpuFS68k.write_word=PicoWriteS68k16;\r |
1681 | PicoCpuFS68k.write_long=PicoWriteS68k32;\r |
1682 | \r |
1683 | // setup FAME fetchmap\r |
1684 | {\r |
1685 | int i;\r |
1686 | // M68k\r |
1687 | // by default, point everything to fitst 64k of ROM (BIOS)\r |
1688 | for (i = 0; i < M68K_FETCHBANK1; i++)\r |
1689 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom - (i<<(24-FAMEC_FETCHBITS));\r |
1690 | // now real ROM (BIOS)\r |
1691 | for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < Pico.romsize; i++)\r |
1692 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom;\r |
1693 | // .. and RAM\r |
1694 | for (i = M68K_FETCHBANK1*14/16; i < M68K_FETCHBANK1; i++)\r |
1695 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.ram - (i<<(24-FAMEC_FETCHBITS));\r |
1696 | // S68k\r |
1697 | // PRG RAM is default\r |
1698 | for (i = 0; i < M68K_FETCHBANK1; i++)\r |
1699 | PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->prg_ram - (i<<(24-FAMEC_FETCHBITS));\r |
1700 | // real PRG RAM\r |
1701 | for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < 0x80000; i++)\r |
1702 | PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->prg_ram;\r |
1703 | // WORD RAM 2M area\r |
1704 | for (i = M68K_FETCHBANK1*0x08/0x100; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < 0xc0000; i++)\r |
1705 | PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram2M - 0x80000;\r |
1706 | // PicoMemResetCD() will setup word ram for both\r |
1707 | }\r |
1708 | #endif\r |
9037e45d |
1709 | #ifdef EMU_M68K\r |
1710 | m68k_mem_setup_cd();\r |
1711 | #endif\r |
3aa1e148 |
1712 | \r |
7a1f6e45 |
1713 | // m68k_poll_addr = m68k_poll_cnt = 0;\r |
1714 | s68k_poll_adclk = s68k_poll_cnt = 0;\r |
b837b69b |
1715 | }\r |
1716 | \r |
1717 | \r |
cc68a136 |
1718 | #ifdef EMU_M68K\r |
9037e45d |
1719 | static unsigned int PicoReadCD8w (unsigned int a) {\r |
3aa1e148 |
1720 | return m68ki_cpu_p == &PicoCpuMS68k ? PicoReadS68k8(a) : PicoReadM68k8(a);\r |
cc68a136 |
1721 | }\r |
9037e45d |
1722 | static unsigned int PicoReadCD16w(unsigned int a) {\r |
3aa1e148 |
1723 | return m68ki_cpu_p == &PicoCpuMS68k ? PicoReadS68k16(a) : PicoReadM68k16(a);\r |
cc68a136 |
1724 | }\r |
9037e45d |
1725 | static unsigned int PicoReadCD32w(unsigned int a) {\r |
3aa1e148 |
1726 | return m68ki_cpu_p == &PicoCpuMS68k ? PicoReadS68k32(a) : PicoReadM68k32(a);\r |
cc68a136 |
1727 | }\r |
9037e45d |
1728 | static void PicoWriteCD8w (unsigned int a, unsigned char d) {\r |
3aa1e148 |
1729 | if (m68ki_cpu_p == &PicoCpuMS68k) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);\r |
cc68a136 |
1730 | }\r |
9037e45d |
1731 | static void PicoWriteCD16w(unsigned int a, unsigned short d) {\r |
3aa1e148 |
1732 | if (m68ki_cpu_p == &PicoCpuMS68k) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);\r |
cc68a136 |
1733 | }\r |
9037e45d |
1734 | static void PicoWriteCD32w(unsigned int a, unsigned int d) {\r |
3aa1e148 |
1735 | if (m68ki_cpu_p == &PicoCpuMS68k) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);\r |
cc68a136 |
1736 | }\r |
1737 | \r |
1738 | // these are allowed to access RAM\r |
9037e45d |
1739 | static unsigned int m68k_read_pcrelative_CD8 (unsigned int a)\r |
b5e5172d |
1740 | {\r |
cc68a136 |
1741 | a&=0xffffff;\r |
3aa1e148 |
1742 | if(m68ki_cpu_p == &PicoCpuMS68k) {\r |
cc68a136 |
1743 | if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram\r |
fa1e5e29 |
1744 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1745 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1746 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
3aa1e148 |
1747 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1748 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1749 | }\r |
ca61ee42 |
1750 | elprintf(EL_ANOMALY, "s68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1751 | } else {\r |
cc68a136 |
1752 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
fa1e5e29 |
1753 | if(a<0x20000) return *(u8 *)(Pico.rom+(a^1)); // Bios\r |
1754 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1755 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1756 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
1757 | else if (a < 0x220000) {\r |
1758 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1759 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
1760 | }\r |
1761 | }\r |
ca61ee42 |
1762 | elprintf(EL_ANOMALY, "m68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
cc68a136 |
1763 | }\r |
1764 | return 0;//(u8) lastread_d;\r |
1765 | }\r |
9037e45d |
1766 | static unsigned int m68k_read_pcrelative_CD16(unsigned int a)\r |
b5e5172d |
1767 | {\r |
cc68a136 |
1768 | a&=0xffffff;\r |
3aa1e148 |
1769 | if(m68ki_cpu_p == &PicoCpuMS68k) {\r |
cc68a136 |
1770 | if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram\r |
fa1e5e29 |
1771 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1772 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1773 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
3aa1e148 |
1774 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1775 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1776 | }\r |
ca61ee42 |
1777 | elprintf(EL_ANOMALY, "s68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1778 | } else {\r |
cc68a136 |
1779 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
fa1e5e29 |
1780 | if(a<0x20000) return *(u16 *)(Pico.rom+(a&~1)); // Bios\r |
1781 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1782 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1783 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
1784 | else if (a < 0x220000) {\r |
1785 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1786 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1787 | }\r |
1788 | }\r |
ca61ee42 |
1789 | elprintf(EL_ANOMALY, "m68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
cc68a136 |
1790 | }\r |
b837b69b |
1791 | return 0;\r |
cc68a136 |
1792 | }\r |
9037e45d |
1793 | static unsigned int m68k_read_pcrelative_CD32(unsigned int a)\r |
b5e5172d |
1794 | {\r |
fa1e5e29 |
1795 | u16 *pm;\r |
cc68a136 |
1796 | a&=0xffffff;\r |
3aa1e148 |
1797 | if(m68ki_cpu_p == &PicoCpuMS68k) {\r |
cc68a136 |
1798 | if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram\r |
fa1e5e29 |
1799 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
1800 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1801 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
3aa1e148 |
1802 | int bank = (Pico_mcd->s68k_regs[3]&1)^1;\r |
fa1e5e29 |
1803 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1804 | return (pm[0]<<16)|pm[1];\r |
1805 | }\r |
ca61ee42 |
1806 | elprintf(EL_ANOMALY, "s68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1807 | } else {\r |
cc68a136 |
1808 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
fa1e5e29 |
1809 | if(a<0x20000) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
1810 | if((a&0xfc0000)==0x200000) { // word RAM\r |
1811 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
1812 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
1813 | else if (a < 0x220000) {\r |
1814 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
1815 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
1816 | return (pm[0]<<16)|pm[1];\r |
1817 | }\r |
1818 | }\r |
ca61ee42 |
1819 | elprintf(EL_ANOMALY, "m68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
cc68a136 |
1820 | }\r |
b837b69b |
1821 | return 0;\r |
cc68a136 |
1822 | }\r |
9037e45d |
1823 | \r |
1824 | extern unsigned int (*pm68k_read_memory_8) (unsigned int address);\r |
1825 | extern unsigned int (*pm68k_read_memory_16)(unsigned int address);\r |
1826 | extern unsigned int (*pm68k_read_memory_32)(unsigned int address);\r |
1827 | extern void (*pm68k_write_memory_8) (unsigned int address, unsigned char value);\r |
1828 | extern void (*pm68k_write_memory_16)(unsigned int address, unsigned short value);\r |
1829 | extern void (*pm68k_write_memory_32)(unsigned int address, unsigned int value);\r |
1830 | extern unsigned int (*pm68k_read_memory_pcr_8) (unsigned int address);\r |
1831 | extern unsigned int (*pm68k_read_memory_pcr_16)(unsigned int address);\r |
1832 | extern unsigned int (*pm68k_read_memory_pcr_32)(unsigned int address);\r |
1833 | \r |
1834 | static void m68k_mem_setup_cd(void)\r |
1835 | {\r |
1836 | pm68k_read_memory_8 = PicoReadCD8w;\r |
1837 | pm68k_read_memory_16 = PicoReadCD16w;\r |
1838 | pm68k_read_memory_32 = PicoReadCD32w;\r |
1839 | pm68k_write_memory_8 = PicoWriteCD8w;\r |
1840 | pm68k_write_memory_16 = PicoWriteCD16w;\r |
1841 | pm68k_write_memory_32 = PicoWriteCD32w;\r |
1842 | pm68k_read_memory_pcr_8 = m68k_read_pcrelative_CD8;\r |
1843 | pm68k_read_memory_pcr_16 = m68k_read_pcrelative_CD16;\r |
1844 | pm68k_read_memory_pcr_32 = m68k_read_pcrelative_CD32;\r |
1845 | }\r |
cc68a136 |
1846 | #endif // EMU_M68K\r |
1847 | \r |