cc68a136 |
1 | // This is part of Pico Library\r |
2 | \r |
3 | // (c) Copyright 2004 Dave, All rights reserved.\r |
4 | // (c) Copyright 2006 notaz, All rights reserved.\r |
5 | // Free for non-commercial use.\r |
6 | \r |
7 | // For commercial use, separate licencing terms must be obtained.\r |
8 | \r |
9 | \r |
b5e5172d |
10 | //#define __debug_io\r |
cc68a136 |
11 | \r |
12 | #include "PicoInt.h"\r |
13 | \r |
cc68a136 |
14 | #include "sound/ym2612.h"\r |
15 | #include "sound/sn76496.h"\r |
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 | extern unsigned int lastSSRamWrite; // used by serial SRAM code\r |
25 | \r |
26 | #ifdef _ASM_MEMORY_C\r |
0af33fe0 |
27 | u32 PicoRead8(u32 a);\r |
28 | u32 PicoRead16(u32 a);\r |
e5503e2f |
29 | void PicoWrite8(u32 a,u8 d);\r |
cc68a136 |
30 | void PicoWriteRomHW_SSF2(u32 a,u32 d);\r |
cc68a136 |
31 | #endif\r |
32 | \r |
33 | \r |
03e4f2a3 |
34 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
35 | u32 lastread_a, lastread_d[16]={0,}, lastwrite_cyc_d[16]={0,}, lastwrite_mus_d[16]={0,};\r |
36 | int lrp_cyc=0, lrp_mus=0, lwp_cyc=0, lwp_mus=0;\r |
37 | extern unsigned int ppop;\r |
38 | #endif\r |
39 | \r |
4f65685b |
40 | #ifdef IO_STATS\r |
41 | void log_io(unsigned int addr, int bits, int rw);\r |
42 | #else\r |
43 | #define log_io(...)\r |
44 | #endif\r |
45 | \r |
70357ce5 |
46 | #if defined(EMU_C68K)\r |
cc68a136 |
47 | static __inline int PicoMemBase(u32 pc)\r |
48 | {\r |
49 | int membase=0;\r |
50 | \r |
51 | if (pc<Pico.romsize+4)\r |
52 | {\r |
53 | membase=(int)Pico.rom; // Program Counter in Rom\r |
54 | }\r |
55 | else if ((pc&0xe00000)==0xe00000)\r |
56 | {\r |
57 | membase=(int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r |
58 | }\r |
59 | else\r |
60 | {\r |
61 | // Error - Program Counter is invalid\r |
62 | membase=(int)Pico.rom;\r |
63 | }\r |
64 | \r |
65 | return membase;\r |
66 | }\r |
67 | #endif\r |
68 | \r |
69 | \r |
8ab3e3c1 |
70 | static u32 PicoCheckPc(u32 pc)\r |
cc68a136 |
71 | {\r |
72 | u32 ret=0;\r |
73 | #if defined(EMU_C68K)\r |
3aa1e148 |
74 | pc-=PicoCpuCM68k.membase; // Get real pc\r |
0af33fe0 |
75 | // pc&=0xfffffe;\r |
76 | pc&=~1;\r |
77 | if ((pc<<8) == 0)\r |
69996cb7 |
78 | {\r |
79 | printf("%i:%03i: game crash detected @ %06x\n", Pico.m.frame_count, Pico.m.scanline, SekPc);\r |
721cd396 |
80 | return (int)Pico.rom + Pico.romsize; // common crash condition, can happen if acc timing is off\r |
69996cb7 |
81 | }\r |
cc68a136 |
82 | \r |
3aa1e148 |
83 | PicoCpuCM68k.membase=PicoMemBase(pc&0x00ffffff);\r |
84 | PicoCpuCM68k.membase-=pc&0xff000000;\r |
cc68a136 |
85 | \r |
3aa1e148 |
86 | ret = PicoCpuCM68k.membase+pc;\r |
cc68a136 |
87 | #endif\r |
88 | return ret;\r |
89 | }\r |
90 | \r |
91 | \r |
eff55556 |
92 | PICO_INTERNAL int PicoInitPc(u32 pc)\r |
cc68a136 |
93 | {\r |
94 | PicoCheckPc(pc);\r |
95 | return 0;\r |
96 | }\r |
97 | \r |
98 | #ifndef _ASM_MEMORY_C\r |
eff55556 |
99 | PICO_INTERNAL_ASM void PicoMemReset(void)\r |
cc68a136 |
100 | {\r |
101 | }\r |
102 | #endif\r |
103 | \r |
104 | // -----------------------------------------------------------------\r |
105 | \r |
e5503e2f |
106 | int PadRead(int i)\r |
107 | {\r |
108 | int pad,value,data_reg;\r |
109 | pad=~PicoPad[i]; // Get inverse of pad MXYZ SACB RLDU\r |
110 | data_reg=Pico.ioports[i+1];\r |
111 | \r |
112 | // orr the bits, which are set as output\r |
113 | value = data_reg&(Pico.ioports[i+4]|0x80);\r |
114 | \r |
115 | if(PicoOpt & 0x20) { // 6 button gamepad enabled\r |
116 | int phase = Pico.m.padTHPhase[i];\r |
117 | \r |
118 | if(phase == 2 && !(data_reg&0x40)) { // TH\r |
119 | value|=(pad&0xc0)>>2; // ?0SA 0000\r |
120 | return value;\r |
121 | } else if(phase == 3) {\r |
122 | if(data_reg&0x40)\r |
123 | value|=(pad&0x30)|((pad>>8)&0xf); // ?1CB MXYZ\r |
124 | else\r |
125 | value|=((pad&0xc0)>>2)|0x0f; // ?0SA 1111\r |
126 | return value;\r |
127 | }\r |
128 | }\r |
129 | \r |
130 | if(data_reg&0x40) // TH\r |
131 | value|=(pad&0x3f); // ?1CB RLDU\r |
132 | else value|=((pad&0xc0)>>2)|(pad&3); // ?0SA 00DU\r |
133 | \r |
134 | return value; // will mirror later\r |
135 | }\r |
136 | \r |
137 | \r |
cc68a136 |
138 | #ifndef _ASM_MEMORY_C\r |
7969166e |
139 | static\r |
140 | #endif\r |
141 | u32 SRAMRead(u32 a)\r |
cc68a136 |
142 | {\r |
7969166e |
143 | unsigned int sreg = Pico.m.sram_reg;\r |
144 | if(!(sreg & 0x10) && (sreg & 1) && a > 0x200001) { // not yet detected SRAM\r |
1dceadae |
145 | elprintf(EL_SRAMIO, "normal sram detected.");\r |
7969166e |
146 | Pico.m.sram_reg|=0x10; // should be normal SRAM\r |
147 | }\r |
148 | if(sreg & 4) // EEPROM read\r |
149 | return SRAMReadEEPROM();\r |
150 | else // if(sreg & 1) // (sreg&5) is one of prerequisites\r |
151 | return *(u8 *)(SRam.data-SRam.start+a);\r |
cc68a136 |
152 | }\r |
cc68a136 |
153 | \r |
7969166e |
154 | static void SRAMWrite(u32 a, u32 d)\r |
155 | {\r |
7969166e |
156 | unsigned int sreg = Pico.m.sram_reg;\r |
157 | if(!(sreg & 0x10)) {\r |
158 | // not detected SRAM\r |
159 | if((a&~1)==0x200000) {\r |
1dceadae |
160 | elprintf(EL_SRAMIO, "eeprom detected.");\r |
161 | sreg|=4; // this should be a game with EEPROM (like NBA Jam)\r |
7969166e |
162 | SRam.start=0x200000; SRam.end=SRam.start+1;\r |
1dceadae |
163 | } else\r |
164 | elprintf(EL_SRAMIO, "normal sram detected.");\r |
165 | sreg|=0x10;\r |
166 | Pico.m.sram_reg=sreg;\r |
7969166e |
167 | }\r |
168 | if(sreg & 4) { // EEPROM write\r |
1dceadae |
169 | // this diff must be at most 16 for NBA Jam to work\r |
170 | if(SekCyclesDoneT()-lastSSRamWrite < 16) {\r |
7969166e |
171 | // just update pending state\r |
1dceadae |
172 | elprintf(EL_EEPROM, "eeprom: skip because cycles=%i", SekCyclesDoneT()-lastSSRamWrite);\r |
7969166e |
173 | SRAMUpdPending(a, d);\r |
174 | } else {\r |
1dceadae |
175 | int old=sreg;\r |
7969166e |
176 | SRAMWriteEEPROM(sreg>>6); // execute pending\r |
177 | SRAMUpdPending(a, d);\r |
1dceadae |
178 | if ((old^Pico.m.sram_reg)&0xc0) // update time only if SDA/SCL changed\r |
179 | lastSSRamWrite = SekCyclesDoneT();\r |
7969166e |
180 | }\r |
181 | } else if(!(sreg & 2)) {\r |
182 | u8 *pm=(u8 *)(SRam.data-SRam.start+a);\r |
183 | if(*pm != (u8)d) {\r |
184 | SRam.changed = 1;\r |
185 | *pm=(u8)d;\r |
186 | }\r |
187 | }\r |
188 | }\r |
cc68a136 |
189 | \r |
190 | // for nonstandard reads\r |
191 | #ifndef _ASM_MEMORY_C\r |
192 | static\r |
193 | #endif\r |
fa1e5e29 |
194 | u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
195 | {\r |
196 | u32 d=0;\r |
197 | \r |
cc68a136 |
198 | // for games with simple protection devices, discovered by Haze\r |
199 | // some dumb detection is used, but that should be enough to make things work\r |
200 | if ((a>>22) == 1 && Pico.romsize >= 512*1024) {\r |
201 | if (*(int *)(Pico.rom+0x123e4) == 0x00550c39 && *(int *)(Pico.rom+0x123e8) == 0x00000040) { // Super Bubble Bobble (Unl) [!]\r |
4f672280 |
202 | if (a == 0x400000) { d=0x55<<8; goto end; }\r |
203 | else if (a == 0x400002) { d=0x0f<<8; goto end; }\r |
204 | }\r |
205 | else if (*(int *)(Pico.rom+0x008c4) == 0x66240055 && *(int *)(Pico.rom+0x008c8) == 0x00404df9) { // Smart Mouse (Unl)\r |
206 | if (a == 0x400000) { d=0x55<<8; goto end; }\r |
207 | else if (a == 0x400002) { d=0x0f<<8; goto end; }\r |
208 | else if (a == 0x400004) { d=0xaa<<8; goto end; }\r |
209 | else if (a == 0x400006) { d=0xf0<<8; goto end; }\r |
210 | }\r |
211 | else if (*(int *)(Pico.rom+0x00404) == 0x00a90600 && *(int *)(Pico.rom+0x00408) == 0x6708b013) { // King of Fighters '98, The (Unl) [!]\r |
212 | if (a == 0x480000 || a == 0x4800e0 || a == 0x4824a0 || a == 0x488880) { d=0xaa<<8; goto end; }\r |
213 | else if (a == 0x4a8820) { d=0x0a<<8; goto end; }\r |
214 | // there is also a read @ 0x4F8820 which needs 0, but that is returned in default case\r |
215 | }\r |
216 | else if (*(int *)(Pico.rom+0x01b24) == 0x004013f9 && *(int *)(Pico.rom+0x01b28) == 0x00ff0000) { // Mahjong Lover (Unl) [!]\r |
217 | if (a == 0x400000) { d=0x90<<8; goto end; }\r |
218 | else if (a == 0x401000) { d=0xd3<<8; goto end; } // this one doesn't seem to be needed, the code does 2 comparisons and only then\r |
219 | // checks the result, which is of the above one. Left it just in case.\r |
220 | }\r |
221 | else if (*(int *)(Pico.rom+0x05254) == 0x0c3962d0 && *(int *)(Pico.rom+0x05258) == 0x00400055) { // Elf Wor (Unl)\r |
222 | if (a == 0x400000) { d=0x55<<8; goto end; }\r |
223 | else if (a == 0x400004) { d=0xc9<<8; goto end; } // this check is done if the above one fails\r |
224 | else if (a == 0x400002) { d=0x0f<<8; goto end; }\r |
225 | else if (a == 0x400006) { d=0x18<<8; goto end; } // similar to above\r |
226 | }\r |
cc68a136 |
227 | // our default behaviour is to return whatever was last written a 0x400000-0x7fffff range (used by Squirrel King (R) [!])\r |
4f672280 |
228 | // Lion King II, The (Unl) [!] writes @ 400000 and wants to get that val @ 400002 and wites another val\r |
229 | // @ 400004 which is expected @ 400006, so we really remember 2 values here\r |
cc68a136 |
230 | d = Pico.m.prot_bytes[(a>>2)&1]<<8;\r |
231 | }\r |
232 | else if (a == 0xa13000 && Pico.romsize >= 1024*1024) {\r |
233 | if (*(int *)(Pico.rom+0xc8af0) == 0x30133013 && *(int *)(Pico.rom+0xc8af4) == 0x000f0240) { // Rockman X3 (Unl) [!]\r |
4f672280 |
234 | d=0x0c; goto end;\r |
235 | }\r |
cc68a136 |
236 | else if (*(int *)(Pico.rom+0x28888) == 0x07fc0000 && *(int *)(Pico.rom+0x2888c) == 0x4eb94e75) { // Bug's Life, A (Unl) [!]\r |
4f672280 |
237 | d=0x28; goto end; // does the check from RAM\r |
238 | }\r |
cc68a136 |
239 | else if (*(int *)(Pico.rom+0xc8778) == 0x30133013 && *(int *)(Pico.rom+0xc877c) == 0x000f0240) { // Super Mario Bros. (Unl) [!]\r |
4f672280 |
240 | d=0x0c; goto end; // seems to be the same code as in Rockman X3 (Unl) [!]\r |
241 | }\r |
cc68a136 |
242 | else if (*(int *)(Pico.rom+0xf20ec) == 0x30143013 && *(int *)(Pico.rom+0xf20f0) == 0x000f0200) { // Super Mario 2 1998 (Unl) [!]\r |
4f672280 |
243 | d=0x0a; goto end;\r |
244 | }\r |
cc68a136 |
245 | }\r |
246 | else if (a == 0xa13002) { // Pocket Monsters (Unl)\r |
247 | d=0x01; goto end;\r |
248 | }\r |
249 | else if (a == 0xa1303E) { // Pocket Monsters (Unl)\r |
250 | d=0x1f; goto end;\r |
251 | }\r |
252 | else if (a == 0x30fe02) {\r |
253 | // Virtua Racing - just for fun\r |
4f672280 |
254 | // this seems to be some flag that SVP is ready or something similar\r |
cc68a136 |
255 | d=1; goto end;\r |
256 | }\r |
257 | \r |
258 | end:\r |
1dceadae |
259 | elprintf(EL_UIO, "strange r%i: [%06x] %04x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
260 | return d;\r |
261 | }\r |
262 | \r |
cc68a136 |
263 | \r |
264 | //extern UINT32 mz80GetRegisterValue(void *, UINT32);\r |
265 | \r |
fa1e5e29 |
266 | static void OtherWrite8End(u32 a,u32 d,int realsize)\r |
cc68a136 |
267 | {\r |
cc68a136 |
268 | // sram\r |
cc68a136 |
269 | if(a >= SRam.start && a <= SRam.end) {\r |
1dceadae |
270 | elprintf(EL_SRAMIO, "sram w8 [%06x] %02x @ %06x", a, d, SekPc);\r |
7969166e |
271 | SRAMWrite(a, d);\r |
cc68a136 |
272 | return;\r |
273 | }\r |
274 | \r |
275 | #ifdef _ASM_MEMORY_C\r |
276 | // special ROM hardware (currently only banking and sram reg supported)\r |
277 | if((a&0xfffff1) == 0xA130F1) {\r |
278 | PicoWriteRomHW_SSF2(a, d); // SSF2 or SRAM\r |
279 | return;\r |
280 | }\r |
281 | #else\r |
282 | // sram access register\r |
283 | if(a == 0xA130F1) {\r |
1dceadae |
284 | elprintf(EL_SRAMIO, "sram reg=%02x", d);\r |
721cd396 |
285 | Pico.m.sram_reg &= ~3;\r |
286 | Pico.m.sram_reg |= (u8)(d&3);\r |
cc68a136 |
287 | return;\r |
288 | }\r |
289 | #endif\r |
1dceadae |
290 | elprintf(EL_UIO, "strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
291 | \r |
292 | if(a >= 0xA13004 && a < 0xA13040) {\r |
293 | // dumb 12-in-1 or 4-in-1 banking support\r |
4f672280 |
294 | int len;\r |
295 | a &= 0x3f; a <<= 16;\r |
296 | len = Pico.romsize - a;\r |
297 | if (len <= 0) return; // invalid/missing bank\r |
298 | if (len > 0x200000) len = 0x200000; // 2 megs\r |
299 | memcpy(Pico.rom, Pico.rom+a, len); // code which does this is in RAM so this is safe.\r |
cc68a136 |
300 | return;\r |
301 | }\r |
302 | \r |
303 | // for games with simple protection devices, discovered by Haze\r |
304 | else if ((a>>22) == 1)\r |
305 | Pico.m.prot_bytes[(a>>2)&1] = (u8)d;\r |
306 | }\r |
307 | \r |
cc68a136 |
308 | \r |
fa1e5e29 |
309 | #include "MemoryCmn.c"\r |
310 | \r |
cc68a136 |
311 | \r |
312 | // -----------------------------------------------------------------\r |
313 | // Read Rom and read Ram\r |
314 | \r |
315 | #ifndef _ASM_MEMORY_C\r |
8ab3e3c1 |
316 | PICO_INTERNAL_ASM u32 PicoRead8(u32 a)\r |
cc68a136 |
317 | {\r |
318 | u32 d=0;\r |
319 | \r |
320 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
321 | \r |
322 | a&=0xffffff;\r |
323 | \r |
03e4f2a3 |
324 | #ifndef EMU_CORE_DEBUG\r |
cc68a136 |
325 | // sram\r |
b5e5172d |
326 | if (a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg&5)) {\r |
7969166e |
327 | d = SRAMRead(a);\r |
1dceadae |
328 | elprintf(EL_SRAMIO, "sram r8 [%06x] %02x @ %06x", a, d, SekPc);\r |
7969166e |
329 | goto end;\r |
cc68a136 |
330 | }\r |
331 | #endif\r |
332 | \r |
333 | if (a<Pico.romsize) { d = *(u8 *)(Pico.rom+(a^1)); goto end; } // Rom\r |
4f65685b |
334 | log_io(a, 8, 0);\r |
cc68a136 |
335 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
336 | \r |
337 | d=OtherRead16(a&~1, 8); if ((a&1)==0) d>>=8;\r |
338 | \r |
1dceadae |
339 | end:\r |
cc68a136 |
340 | #ifdef __debug_io\r |
341 | dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
342 | #endif\r |
03e4f2a3 |
343 | #ifdef EMU_CORE_DEBUG\r |
b5e5172d |
344 | if (a>=Pico.romsize) {\r |
cc68a136 |
345 | lastread_a = a;\r |
346 | lastread_d[lrp_cyc++&15] = (u8)d;\r |
347 | }\r |
348 | #endif\r |
0af33fe0 |
349 | return d;\r |
cc68a136 |
350 | }\r |
351 | \r |
8ab3e3c1 |
352 | PICO_INTERNAL_ASM u32 PicoRead16(u32 a)\r |
cc68a136 |
353 | {\r |
0af33fe0 |
354 | u32 d=0;\r |
cc68a136 |
355 | \r |
356 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
357 | \r |
358 | a&=0xfffffe;\r |
359 | \r |
03e4f2a3 |
360 | #ifndef EMU_CORE_DEBUG\r |
cc68a136 |
361 | // sram\r |
b5e5172d |
362 | if (a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg&5)) {\r |
0af33fe0 |
363 | d = SRAMRead(a);\r |
7969166e |
364 | d |= d<<8;\r |
1dceadae |
365 | elprintf(EL_SRAMIO, "sram r16 [%06x] %04x @ %06x", a, d, SekPc);\r |
cc68a136 |
366 | goto end;\r |
367 | }\r |
368 | #endif\r |
369 | \r |
370 | if (a<Pico.romsize) { d = *(u16 *)(Pico.rom+a); goto end; } // Rom\r |
4f65685b |
371 | log_io(a, 16, 0);\r |
cc68a136 |
372 | \r |
0af33fe0 |
373 | d = OtherRead16(a, 16);\r |
cc68a136 |
374 | \r |
1dceadae |
375 | end:\r |
cc68a136 |
376 | #ifdef __debug_io\r |
377 | dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
378 | #endif\r |
03e4f2a3 |
379 | #ifdef EMU_CORE_DEBUG\r |
b5e5172d |
380 | if (a>=Pico.romsize) {\r |
cc68a136 |
381 | lastread_a = a;\r |
382 | lastread_d[lrp_cyc++&15] = d;\r |
383 | }\r |
384 | #endif\r |
385 | return d;\r |
386 | }\r |
387 | \r |
8ab3e3c1 |
388 | PICO_INTERNAL_ASM u32 PicoRead32(u32 a)\r |
cc68a136 |
389 | {\r |
390 | u32 d=0;\r |
391 | \r |
392 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
393 | \r |
394 | a&=0xfffffe;\r |
395 | \r |
396 | // sram\r |
7969166e |
397 | if(a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg&5)) {\r |
cc68a136 |
398 | d = (SRAMRead(a)<<16)|SRAMRead(a+2);\r |
7969166e |
399 | d |= d<<8;\r |
1dceadae |
400 | elprintf(EL_SRAMIO, "sram r32 [%06x] %08x @ %06x", a, d, SekPc);\r |
cc68a136 |
401 | goto end;\r |
402 | }\r |
403 | \r |
404 | if (a<Pico.romsize) { u16 *pm=(u16 *)(Pico.rom+a); d = (pm[0]<<16)|pm[1]; goto end; } // Rom\r |
4f65685b |
405 | log_io(a, 32, 0);\r |
cc68a136 |
406 | \r |
407 | d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
408 | \r |
1dceadae |
409 | end:\r |
cc68a136 |
410 | #ifdef __debug_io\r |
411 | dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
412 | #endif\r |
03e4f2a3 |
413 | #ifdef EMU_CORE_DEBUG\r |
b5e5172d |
414 | if (a>=Pico.romsize) {\r |
cc68a136 |
415 | lastread_a = a;\r |
416 | lastread_d[lrp_cyc++&15] = d;\r |
417 | }\r |
418 | #endif\r |
419 | return d;\r |
420 | }\r |
421 | #endif\r |
422 | \r |
423 | // -----------------------------------------------------------------\r |
424 | // Write Ram\r |
425 | \r |
3ec29f01 |
426 | #if !defined(_ASM_MEMORY_C) || defined(_ASM_MEMORY_C_AMIPS)\r |
8ab3e3c1 |
427 | PICO_INTERNAL_ASM void PicoWrite8(u32 a,u8 d)\r |
cc68a136 |
428 | {\r |
429 | #ifdef __debug_io\r |
430 | dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
431 | #endif\r |
03e4f2a3 |
432 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
433 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
434 | #endif\r |
cc68a136 |
435 | \r |
d9153729 |
436 | if ((a&0xe00000)==0xe00000) { *(u8 *)(Pico.ram+((a^1)&0xffff))=d; return; } // Ram\r |
4f65685b |
437 | log_io(a, 8, 1);\r |
cc68a136 |
438 | \r |
439 | a&=0xffffff;\r |
fb9bec94 |
440 | OtherWrite8(a,d);\r |
cc68a136 |
441 | }\r |
e5503e2f |
442 | #endif\r |
cc68a136 |
443 | \r |
8ab3e3c1 |
444 | void PicoWrite16(u32 a,u16 d)\r |
cc68a136 |
445 | {\r |
446 | #ifdef __debug_io\r |
447 | dprintf("w16: %06x, %04x", a&0xffffff, d);\r |
448 | #endif\r |
03e4f2a3 |
449 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
450 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
451 | #endif\r |
cc68a136 |
452 | \r |
453 | if ((a&0xe00000)==0xe00000) { *(u16 *)(Pico.ram+(a&0xfffe))=d; return; } // Ram\r |
4f65685b |
454 | log_io(a, 16, 1);\r |
cc68a136 |
455 | \r |
456 | a&=0xfffffe;\r |
457 | OtherWrite16(a,d);\r |
458 | }\r |
459 | \r |
8ab3e3c1 |
460 | static void PicoWrite32(u32 a,u32 d)\r |
cc68a136 |
461 | {\r |
462 | #ifdef __debug_io\r |
463 | dprintf("w32: %06x, %08x", a&0xffffff, d);\r |
464 | #endif\r |
03e4f2a3 |
465 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
466 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
467 | #endif\r |
468 | \r |
469 | if ((a&0xe00000)==0xe00000)\r |
470 | {\r |
471 | // Ram:\r |
472 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
473 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
474 | return;\r |
475 | }\r |
4f65685b |
476 | log_io(a, 32, 1);\r |
cc68a136 |
477 | \r |
478 | a&=0xfffffe;\r |
479 | OtherWrite16(a, (u16)(d>>16));\r |
480 | OtherWrite16(a+2,(u16)d);\r |
481 | }\r |
482 | \r |
483 | \r |
484 | // -----------------------------------------------------------------\r |
eff55556 |
485 | PICO_INTERNAL void PicoMemSetup(void)\r |
cc68a136 |
486 | {\r |
cc68a136 |
487 | // Setup memory callbacks:\r |
70357ce5 |
488 | #ifdef EMU_C68K\r |
3aa1e148 |
489 | PicoCpuCM68k.checkpc=PicoCheckPc;\r |
490 | PicoCpuCM68k.fetch8 =PicoCpuCM68k.read8 =PicoRead8;\r |
491 | PicoCpuCM68k.fetch16=PicoCpuCM68k.read16=PicoRead16;\r |
492 | PicoCpuCM68k.fetch32=PicoCpuCM68k.read32=PicoRead32;\r |
493 | PicoCpuCM68k.write8 =PicoWrite8;\r |
494 | PicoCpuCM68k.write16=PicoWrite16;\r |
495 | PicoCpuCM68k.write32=PicoWrite32;\r |
cc68a136 |
496 | #endif\r |
70357ce5 |
497 | #ifdef EMU_F68K\r |
3aa1e148 |
498 | PicoCpuFM68k.read_byte =PicoRead8;\r |
499 | PicoCpuFM68k.read_word =PicoRead16;\r |
500 | PicoCpuFM68k.read_long =PicoRead32;\r |
501 | PicoCpuFM68k.write_byte=PicoWrite8;\r |
502 | PicoCpuFM68k.write_word=PicoWrite16;\r |
503 | PicoCpuFM68k.write_long=PicoWrite32;\r |
504 | \r |
505 | // setup FAME fetchmap\r |
506 | {\r |
507 | int i;\r |
508 | // by default, point everything to fitst 64k of ROM\r |
509 | for (i = 0; i < M68K_FETCHBANK1; i++)\r |
510 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom - (i<<(24-FAMEC_FETCHBITS));\r |
511 | // now real ROM\r |
512 | for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < Pico.romsize; i++)\r |
513 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom;\r |
514 | // .. and RAM\r |
515 | for (i = M68K_FETCHBANK1*14/16; i < M68K_FETCHBANK1; i++)\r |
516 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.ram - (i<<(24-FAMEC_FETCHBITS));\r |
517 | }\r |
70357ce5 |
518 | #endif\r |
cc68a136 |
519 | }\r |
520 | \r |
cc68a136 |
521 | \r |
522 | #ifdef EMU_M68K\r |
523 | unsigned int m68k_read_pcrelative_CD8 (unsigned int a);\r |
524 | unsigned int m68k_read_pcrelative_CD16(unsigned int a);\r |
525 | unsigned int m68k_read_pcrelative_CD32(unsigned int a);\r |
526 | \r |
527 | // these are allowed to access RAM\r |
b5e5172d |
528 | static unsigned int m68k_read_8 (unsigned int a, int do_fake)\r |
529 | {\r |
cc68a136 |
530 | a&=0xffffff;\r |
b5e5172d |
531 | if(a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k) return *(u8 *)(Pico.rom+(a^1)); // Rom\r |
03e4f2a3 |
532 | #ifdef EMU_CORE_DEBUG\r |
2d0b15bb |
533 | if(do_fake&&((ppop&0x3f)==0x3a||(ppop&0x3f)==0x3b)) return lastread_d[lrp_mus++&15];\r |
2270612a |
534 | #endif\r |
b5e5172d |
535 | if(PicoMCD&1) return m68k_read_pcrelative_CD8(a);\r |
cc68a136 |
536 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
2d0b15bb |
537 | return 0;\r |
cc68a136 |
538 | }\r |
b5e5172d |
539 | static unsigned int m68k_read_16(unsigned int a, int do_fake)\r |
540 | {\r |
cc68a136 |
541 | a&=0xffffff;\r |
b5e5172d |
542 | if(a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k) return *(u16 *)(Pico.rom+(a&~1)); // Rom\r |
03e4f2a3 |
543 | #ifdef EMU_CORE_DEBUG\r |
2d0b15bb |
544 | if(do_fake&&((ppop&0x3f)==0x3a||(ppop&0x3f)==0x3b)) return lastread_d[lrp_mus++&15];\r |
2270612a |
545 | #endif\r |
b5e5172d |
546 | if(PicoMCD&1) return m68k_read_pcrelative_CD16(a);\r |
cc68a136 |
547 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
2d0b15bb |
548 | return 0;\r |
cc68a136 |
549 | }\r |
b5e5172d |
550 | static unsigned int m68k_read_32(unsigned int a, int do_fake)\r |
551 | {\r |
cc68a136 |
552 | a&=0xffffff;\r |
b5e5172d |
553 | if(a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
03e4f2a3 |
554 | #ifdef EMU_CORE_DEBUG\r |
2d0b15bb |
555 | if(do_fake&&((ppop&0x3f)==0x3a||(ppop&0x3f)==0x3b)) return lastread_d[lrp_mus++&15];\r |
2270612a |
556 | #endif\r |
b5e5172d |
557 | if(PicoMCD&1) return m68k_read_pcrelative_CD32(a);\r |
cc68a136 |
558 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
2d0b15bb |
559 | return 0;\r |
cc68a136 |
560 | }\r |
561 | \r |
2d0b15bb |
562 | unsigned int m68k_read_pcrelative_8 (unsigned int a) { return m68k_read_8 (a, 1); }\r |
563 | unsigned int m68k_read_pcrelative_16(unsigned int a) { return m68k_read_16(a, 1); }\r |
564 | unsigned int m68k_read_pcrelative_32(unsigned int a) { return m68k_read_32(a, 1); }\r |
565 | unsigned int m68k_read_immediate_16(unsigned int a) { return m68k_read_16(a, 0); }\r |
566 | unsigned int m68k_read_immediate_32(unsigned int a) { return m68k_read_32(a, 0); }\r |
567 | unsigned int m68k_read_disassembler_8 (unsigned int a) { return m68k_read_8 (a, 0); }\r |
568 | unsigned int m68k_read_disassembler_16(unsigned int a) { return m68k_read_16(a, 0); }\r |
569 | unsigned int m68k_read_disassembler_32(unsigned int a) { return m68k_read_32(a, 0); }\r |
cc68a136 |
570 | \r |
03e4f2a3 |
571 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
572 | // ROM only\r |
2d0b15bb |
573 | unsigned int m68k_read_memory_8(unsigned int a)\r |
574 | {\r |
575 | u8 d;\r |
b5e5172d |
576 | if (a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k)\r |
577 | d = *(u8 *) (Pico.rom+(a^1));\r |
2d0b15bb |
578 | else d = (u8) lastread_d[lrp_mus++&15];\r |
579 | #ifdef __debug_io\r |
580 | dprintf("r8_mu : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
581 | #endif\r |
582 | return d;\r |
583 | }\r |
584 | unsigned int m68k_read_memory_16(unsigned int a)\r |
585 | {\r |
586 | u16 d;\r |
b5e5172d |
587 | if (a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k)\r |
588 | d = *(u16 *)(Pico.rom+(a&~1));\r |
2d0b15bb |
589 | else d = (u16) lastread_d[lrp_mus++&15];\r |
590 | #ifdef __debug_io\r |
591 | dprintf("r16_mu: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
592 | #endif\r |
593 | return d;\r |
594 | }\r |
595 | unsigned int m68k_read_memory_32(unsigned int a)\r |
596 | {\r |
597 | u32 d;\r |
b5e5172d |
598 | if (a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k)\r |
599 | { u16 *pm=(u16 *)(Pico.rom+(a&~1));d=(pm[0]<<16)|pm[1]; }\r |
600 | else if (a <= 0x78) d = m68k_read_32(a, 0);\r |
2d0b15bb |
601 | else d = lastread_d[lrp_mus++&15];\r |
602 | #ifdef __debug_io\r |
603 | dprintf("r32_mu: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
604 | #endif\r |
605 | return d;\r |
606 | }\r |
cc68a136 |
607 | \r |
608 | // ignore writes, Cyclone already done that\r |
609 | void m68k_write_memory_8(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }\r |
610 | void m68k_write_memory_16(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }\r |
611 | void m68k_write_memory_32(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }\r |
612 | #else\r |
613 | unsigned char PicoReadCD8w (unsigned int a);\r |
614 | unsigned short PicoReadCD16w(unsigned int a);\r |
615 | unsigned int PicoReadCD32w(unsigned int a);\r |
616 | void PicoWriteCD8w (unsigned int a, unsigned char d);\r |
617 | void PicoWriteCD16w(unsigned int a, unsigned short d);\r |
618 | void PicoWriteCD32w(unsigned int a, unsigned int d);\r |
619 | \r |
1dceadae |
620 | /* it appears that Musashi doesn't always mask the unused bits */\r |
cc68a136 |
621 | unsigned int m68k_read_memory_8(unsigned int address)\r |
622 | {\r |
1dceadae |
623 | unsigned int d = (PicoMCD&1) ? PicoReadCD8w(address) : PicoRead8(address);\r |
624 | return d&0xff;\r |
cc68a136 |
625 | }\r |
626 | \r |
627 | unsigned int m68k_read_memory_16(unsigned int address)\r |
628 | {\r |
1dceadae |
629 | unsigned int d = (PicoMCD&1) ? PicoReadCD16w(address) : PicoRead16(address);\r |
630 | return d&0xffff;\r |
cc68a136 |
631 | }\r |
632 | \r |
633 | unsigned int m68k_read_memory_32(unsigned int address)\r |
634 | {\r |
4f672280 |
635 | return (PicoMCD&1) ? PicoReadCD32w(address) : PicoRead32(address);\r |
cc68a136 |
636 | }\r |
637 | \r |
638 | void m68k_write_memory_8(unsigned int address, unsigned int value)\r |
639 | {\r |
4f672280 |
640 | if (PicoMCD&1) PicoWriteCD8w(address, (u8)value); else PicoWrite8(address, (u8)value);\r |
cc68a136 |
641 | }\r |
642 | \r |
643 | void m68k_write_memory_16(unsigned int address, unsigned int value)\r |
644 | {\r |
4f672280 |
645 | if (PicoMCD&1) PicoWriteCD16w(address,(u16)value); else PicoWrite16(address,(u16)value);\r |
cc68a136 |
646 | }\r |
647 | \r |
648 | void m68k_write_memory_32(unsigned int address, unsigned int value)\r |
649 | {\r |
4f672280 |
650 | if (PicoMCD&1) PicoWriteCD32w(address, value); else PicoWrite32(address, value);\r |
cc68a136 |
651 | }\r |
652 | #endif\r |
653 | #endif // EMU_M68K\r |
654 | \r |
655 | \r |
656 | // -----------------------------------------------------------------\r |
657 | // z80 memhandlers\r |
658 | \r |
eff55556 |
659 | PICO_INTERNAL unsigned char z80_read(unsigned short a)\r |
cc68a136 |
660 | {\r |
661 | u8 ret = 0;\r |
662 | \r |
03e4f2a3 |
663 | #ifndef _USE_DRZ80\r |
664 | if (a<0x4000) return Pico.zram[a&0x1fff];\r |
665 | #endif\r |
666 | \r |
cc68a136 |
667 | if ((a>>13)==2) // 0x4000-0x5fff (Charles MacDonald)\r |
668 | {\r |
03e4f2a3 |
669 | if (PicoOpt&1) ret = (u8) YM2612Read();\r |
670 | return ret;\r |
cc68a136 |
671 | }\r |
672 | \r |
673 | if (a>=0x8000)\r |
674 | {\r |
675 | u32 addr68k;\r |
676 | addr68k=Pico.m.z80_bank68k<<15;\r |
677 | addr68k+=a&0x7fff;\r |
678 | \r |
679 | ret = (u8) PicoRead8(addr68k);\r |
69996cb7 |
680 | elprintf(EL_Z80BNK, "z80->68k r8 [%06x] %02x", addr68k, ret);\r |
03e4f2a3 |
681 | return ret;\r |
cc68a136 |
682 | }\r |
683 | \r |
03e4f2a3 |
684 | #ifdef _USE_DRZ80\r |
cc68a136 |
685 | // should not be needed || dprintf("z80_read RAM");\r |
03e4f2a3 |
686 | if (a<0x4000) return Pico.zram[a&0x1fff];\r |
687 | #endif\r |
cc68a136 |
688 | \r |
69996cb7 |
689 | elprintf(EL_ANOMALY, "z80 invalid r8 [%06x] %02x", a, ret);\r |
cc68a136 |
690 | return ret;\r |
691 | }\r |
692 | \r |
a4221917 |
693 | #ifndef _USE_CZ80\r |
eff55556 |
694 | PICO_INTERNAL_ASM void z80_write(unsigned char data, unsigned short a)\r |
a4221917 |
695 | #else\r |
696 | PICO_INTERNAL_ASM void z80_write(unsigned int a, unsigned char data)\r |
697 | #endif\r |
cc68a136 |
698 | {\r |
03e4f2a3 |
699 | #ifndef _USE_DRZ80\r |
700 | if (a<0x4000) { Pico.zram[a&0x1fff]=data; return; }\r |
701 | #endif\r |
cc68a136 |
702 | \r |
703 | if ((a>>13)==2) // 0x4000-0x5fff (Charles MacDonald)\r |
704 | {\r |
fa283c9a |
705 | if(PicoOpt&1) emustatus|=YM2612Write(a, data) & 1;\r |
cc68a136 |
706 | return;\r |
707 | }\r |
708 | \r |
709 | if ((a&0xfff9)==0x7f11) // 7f11 7f13 7f15 7f17\r |
710 | {\r |
711 | if(PicoOpt&2) SN76496Write(data);\r |
712 | return;\r |
713 | }\r |
714 | \r |
715 | if ((a>>8)==0x60)\r |
716 | {\r |
717 | Pico.m.z80_bank68k>>=1;\r |
718 | Pico.m.z80_bank68k|=(data&1)<<8;\r |
719 | Pico.m.z80_bank68k&=0x1ff; // 9 bits and filled in the new top one\r |
720 | return;\r |
721 | }\r |
722 | \r |
723 | if (a>=0x8000)\r |
724 | {\r |
725 | u32 addr68k;\r |
726 | addr68k=Pico.m.z80_bank68k<<15;\r |
727 | addr68k+=a&0x7fff;\r |
69996cb7 |
728 | elprintf(EL_Z80BNK, "z80->68k w8 [%06x] %02x", addr68k, data);\r |
cc68a136 |
729 | PicoWrite8(addr68k, data);\r |
cc68a136 |
730 | return;\r |
731 | }\r |
732 | \r |
03e4f2a3 |
733 | #ifdef _USE_DRZ80\r |
cc68a136 |
734 | // should not be needed, drZ80 knows how to access RAM itself || dprintf("z80_write RAM @ %08x", lr);\r |
735 | if (a<0x4000) { Pico.zram[a&0x1fff]=data; return; }\r |
03e4f2a3 |
736 | #endif\r |
69996cb7 |
737 | \r |
738 | elprintf(EL_ANOMALY, "z80 invalid w8 [%06x] %02x", a, data);\r |
cc68a136 |
739 | }\r |
740 | \r |
a4221917 |
741 | #ifndef _USE_CZ80\r |
742 | PICO_INTERNAL unsigned short z80_read16(unsigned short a)\r |
743 | {\r |
a4221917 |
744 | return (u16) ( (u16)z80_read(a) | ((u16)z80_read((u16)(a+1))<<8) );\r |
745 | }\r |
746 | \r |
eff55556 |
747 | PICO_INTERNAL void z80_write16(unsigned short data, unsigned short a)\r |
cc68a136 |
748 | {\r |
cc68a136 |
749 | z80_write((unsigned char) data,a);\r |
750 | z80_write((unsigned char)(data>>8),(u16)(a+1));\r |
751 | }\r |
a4221917 |
752 | #endif\r |
cc68a136 |
753 | \r |