cc68a136 |
1 | // This is part of Pico Library\r |
2 | \r |
3 | // (c) Copyright 2004 Dave, All rights reserved.\r |
ca61ee42 |
4 | // (c) Copyright 2006,2007 notaz, All rights reserved.\r |
cc68a136 |
5 | // Free for non-commercial use.\r |
6 | \r |
7 | // For commercial use, separate licencing terms must be obtained.\r |
8 | \r |
9 | \r |
cc68a136 |
10 | #include "PicoInt.h"\r |
11 | \r |
cc68a136 |
12 | #include "sound/ym2612.h"\r |
13 | #include "sound/sn76496.h"\r |
14 | \r |
eff55556 |
15 | #ifndef UTYPES_DEFINED\r |
cc68a136 |
16 | typedef unsigned char u8;\r |
17 | typedef unsigned short u16;\r |
18 | typedef unsigned int u32;\r |
eff55556 |
19 | #define UTYPES_DEFINED\r |
20 | #endif\r |
cc68a136 |
21 | \r |
22 | extern unsigned int lastSSRamWrite; // used by serial SRAM code\r |
23 | \r |
24 | #ifdef _ASM_MEMORY_C\r |
0af33fe0 |
25 | u32 PicoRead8(u32 a);\r |
26 | u32 PicoRead16(u32 a);\r |
e5503e2f |
27 | void PicoWrite8(u32 a,u8 d);\r |
cc68a136 |
28 | void PicoWriteRomHW_SSF2(u32 a,u32 d);\r |
cc68a136 |
29 | #endif\r |
30 | \r |
31 | \r |
03e4f2a3 |
32 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
33 | u32 lastread_a, lastread_d[16]={0,}, lastwrite_cyc_d[16]={0,}, lastwrite_mus_d[16]={0,};\r |
34 | int lrp_cyc=0, lrp_mus=0, lwp_cyc=0, lwp_mus=0;\r |
35 | extern unsigned int ppop;\r |
36 | #endif\r |
37 | \r |
4f65685b |
38 | #ifdef IO_STATS\r |
39 | void log_io(unsigned int addr, int bits, int rw);\r |
dca310c4 |
40 | #elif defined(_MSC_VER)\r |
41 | #define log_io\r |
4f65685b |
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 |
406c96c5 |
70 | PICO_INTERNAL 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 |
602133e1 |
115 | if (PicoOpt & POPT_6BTN_PAD)\r |
116 | {\r |
e5503e2f |
117 | int phase = Pico.m.padTHPhase[i];\r |
118 | \r |
119 | if(phase == 2 && !(data_reg&0x40)) { // TH\r |
120 | value|=(pad&0xc0)>>2; // ?0SA 0000\r |
121 | return value;\r |
122 | } else if(phase == 3) {\r |
123 | if(data_reg&0x40)\r |
124 | value|=(pad&0x30)|((pad>>8)&0xf); // ?1CB MXYZ\r |
125 | else\r |
126 | value|=((pad&0xc0)>>2)|0x0f; // ?0SA 1111\r |
127 | return value;\r |
128 | }\r |
129 | }\r |
130 | \r |
131 | if(data_reg&0x40) // TH\r |
132 | value|=(pad&0x3f); // ?1CB RLDU\r |
133 | else value|=((pad&0xc0)>>2)|(pad&3); // ?0SA 00DU\r |
134 | \r |
135 | return value; // will mirror later\r |
136 | }\r |
137 | \r |
138 | \r |
cc68a136 |
139 | #ifndef _ASM_MEMORY_C\r |
7969166e |
140 | static\r |
141 | #endif\r |
142 | u32 SRAMRead(u32 a)\r |
cc68a136 |
143 | {\r |
7969166e |
144 | unsigned int sreg = Pico.m.sram_reg;\r |
9dc09829 |
145 | if (!(sreg & 0x10) && (sreg & 1) && a > 0x200001) { // not yet detected SRAM\r |
1dceadae |
146 | elprintf(EL_SRAMIO, "normal sram detected.");\r |
7969166e |
147 | Pico.m.sram_reg|=0x10; // should be normal SRAM\r |
148 | }\r |
9dc09829 |
149 | if (sreg & 4) // EEPROM read\r |
7969166e |
150 | return SRAMReadEEPROM();\r |
151 | else // if(sreg & 1) // (sreg&5) is one of prerequisites\r |
152 | return *(u8 *)(SRam.data-SRam.start+a);\r |
cc68a136 |
153 | }\r |
cc68a136 |
154 | \r |
9dc09829 |
155 | #ifndef _ASM_MEMORY_C\r |
156 | static\r |
157 | #endif\r |
158 | u32 SRAMRead16(u32 a)\r |
159 | {\r |
160 | u32 d;\r |
161 | if (Pico.m.sram_reg & 4) {\r |
162 | d = SRAMReadEEPROM();\r |
163 | d |= d << 8;\r |
164 | } else {\r |
165 | u8 *pm=(u8 *)(SRam.data-SRam.start+a);\r |
166 | d =*pm++ << 8;\r |
167 | d|=*pm++;\r |
168 | }\r |
169 | return d;\r |
170 | }\r |
171 | \r |
7969166e |
172 | static void SRAMWrite(u32 a, u32 d)\r |
173 | {\r |
7969166e |
174 | unsigned int sreg = Pico.m.sram_reg;\r |
175 | if(!(sreg & 0x10)) {\r |
176 | // not detected SRAM\r |
177 | if((a&~1)==0x200000) {\r |
1dceadae |
178 | elprintf(EL_SRAMIO, "eeprom detected.");\r |
179 | sreg|=4; // this should be a game with EEPROM (like NBA Jam)\r |
7969166e |
180 | SRam.start=0x200000; SRam.end=SRam.start+1;\r |
1dceadae |
181 | } else\r |
182 | elprintf(EL_SRAMIO, "normal sram detected.");\r |
183 | sreg|=0x10;\r |
184 | Pico.m.sram_reg=sreg;\r |
7969166e |
185 | }\r |
186 | if(sreg & 4) { // EEPROM write\r |
1dceadae |
187 | // this diff must be at most 16 for NBA Jam to work\r |
188 | if(SekCyclesDoneT()-lastSSRamWrite < 16) {\r |
7969166e |
189 | // just update pending state\r |
1dceadae |
190 | elprintf(EL_EEPROM, "eeprom: skip because cycles=%i", SekCyclesDoneT()-lastSSRamWrite);\r |
7969166e |
191 | SRAMUpdPending(a, d);\r |
192 | } else {\r |
1dceadae |
193 | int old=sreg;\r |
7969166e |
194 | SRAMWriteEEPROM(sreg>>6); // execute pending\r |
195 | SRAMUpdPending(a, d);\r |
1dceadae |
196 | if ((old^Pico.m.sram_reg)&0xc0) // update time only if SDA/SCL changed\r |
197 | lastSSRamWrite = SekCyclesDoneT();\r |
7969166e |
198 | }\r |
199 | } else if(!(sreg & 2)) {\r |
200 | u8 *pm=(u8 *)(SRam.data-SRam.start+a);\r |
201 | if(*pm != (u8)d) {\r |
202 | SRam.changed = 1;\r |
203 | *pm=(u8)d;\r |
204 | }\r |
205 | }\r |
206 | }\r |
cc68a136 |
207 | \r |
208 | // for nonstandard reads\r |
f53f286a |
209 | static u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
210 | {\r |
211 | u32 d=0;\r |
212 | \r |
9037e45d |
213 | // 32x test\r |
214 | /*\r |
215 | if (a == 0xa130ec) { d = 0x4d41; goto end; } // MA\r |
216 | else if (a == 0xa130ee) { d = 0x5253; goto end; } // RS\r |
217 | else if (a == 0xa15100) { d = 0x0080; goto end; }\r |
218 | else\r |
219 | */\r |
220 | \r |
cc68a136 |
221 | // for games with simple protection devices, discovered by Haze\r |
222 | // some dumb detection is used, but that should be enough to make things work\r |
223 | if ((a>>22) == 1 && Pico.romsize >= 512*1024) {\r |
224 | if (*(int *)(Pico.rom+0x123e4) == 0x00550c39 && *(int *)(Pico.rom+0x123e8) == 0x00000040) { // Super Bubble Bobble (Unl) [!]\r |
4f672280 |
225 | if (a == 0x400000) { d=0x55<<8; goto end; }\r |
226 | else if (a == 0x400002) { d=0x0f<<8; goto end; }\r |
227 | }\r |
228 | else if (*(int *)(Pico.rom+0x008c4) == 0x66240055 && *(int *)(Pico.rom+0x008c8) == 0x00404df9) { // Smart Mouse (Unl)\r |
229 | if (a == 0x400000) { d=0x55<<8; goto end; }\r |
230 | else if (a == 0x400002) { d=0x0f<<8; goto end; }\r |
231 | else if (a == 0x400004) { d=0xaa<<8; goto end; }\r |
232 | else if (a == 0x400006) { d=0xf0<<8; goto end; }\r |
233 | }\r |
234 | else if (*(int *)(Pico.rom+0x00404) == 0x00a90600 && *(int *)(Pico.rom+0x00408) == 0x6708b013) { // King of Fighters '98, The (Unl) [!]\r |
235 | if (a == 0x480000 || a == 0x4800e0 || a == 0x4824a0 || a == 0x488880) { d=0xaa<<8; goto end; }\r |
236 | else if (a == 0x4a8820) { d=0x0a<<8; goto end; }\r |
237 | // there is also a read @ 0x4F8820 which needs 0, but that is returned in default case\r |
238 | }\r |
239 | else if (*(int *)(Pico.rom+0x01b24) == 0x004013f9 && *(int *)(Pico.rom+0x01b28) == 0x00ff0000) { // Mahjong Lover (Unl) [!]\r |
240 | if (a == 0x400000) { d=0x90<<8; goto end; }\r |
241 | 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 |
242 | // checks the result, which is of the above one. Left it just in case.\r |
243 | }\r |
244 | else if (*(int *)(Pico.rom+0x05254) == 0x0c3962d0 && *(int *)(Pico.rom+0x05258) == 0x00400055) { // Elf Wor (Unl)\r |
245 | if (a == 0x400000) { d=0x55<<8; goto end; }\r |
246 | else if (a == 0x400004) { d=0xc9<<8; goto end; } // this check is done if the above one fails\r |
247 | else if (a == 0x400002) { d=0x0f<<8; goto end; }\r |
248 | else if (a == 0x400006) { d=0x18<<8; goto end; } // similar to above\r |
249 | }\r |
cc68a136 |
250 | // our default behaviour is to return whatever was last written a 0x400000-0x7fffff range (used by Squirrel King (R) [!])\r |
4f672280 |
251 | // Lion King II, The (Unl) [!] writes @ 400000 and wants to get that val @ 400002 and wites another val\r |
252 | // @ 400004 which is expected @ 400006, so we really remember 2 values here\r |
cc68a136 |
253 | d = Pico.m.prot_bytes[(a>>2)&1]<<8;\r |
254 | }\r |
255 | else if (a == 0xa13000 && Pico.romsize >= 1024*1024) {\r |
256 | if (*(int *)(Pico.rom+0xc8af0) == 0x30133013 && *(int *)(Pico.rom+0xc8af4) == 0x000f0240) { // Rockman X3 (Unl) [!]\r |
4f672280 |
257 | d=0x0c; goto end;\r |
258 | }\r |
cc68a136 |
259 | else if (*(int *)(Pico.rom+0x28888) == 0x07fc0000 && *(int *)(Pico.rom+0x2888c) == 0x4eb94e75) { // Bug's Life, A (Unl) [!]\r |
4f672280 |
260 | d=0x28; goto end; // does the check from RAM\r |
261 | }\r |
cc68a136 |
262 | else if (*(int *)(Pico.rom+0xc8778) == 0x30133013 && *(int *)(Pico.rom+0xc877c) == 0x000f0240) { // Super Mario Bros. (Unl) [!]\r |
4f672280 |
263 | d=0x0c; goto end; // seems to be the same code as in Rockman X3 (Unl) [!]\r |
264 | }\r |
cc68a136 |
265 | else if (*(int *)(Pico.rom+0xf20ec) == 0x30143013 && *(int *)(Pico.rom+0xf20f0) == 0x000f0200) { // Super Mario 2 1998 (Unl) [!]\r |
4f672280 |
266 | d=0x0a; goto end;\r |
267 | }\r |
cc68a136 |
268 | }\r |
269 | else if (a == 0xa13002) { // Pocket Monsters (Unl)\r |
270 | d=0x01; goto end;\r |
271 | }\r |
272 | else if (a == 0xa1303E) { // Pocket Monsters (Unl)\r |
273 | d=0x1f; goto end;\r |
274 | }\r |
275 | else if (a == 0x30fe02) {\r |
276 | // Virtua Racing - just for fun\r |
4f672280 |
277 | // this seems to be some flag that SVP is ready or something similar\r |
cc68a136 |
278 | d=1; goto end;\r |
279 | }\r |
280 | \r |
281 | end:\r |
1dceadae |
282 | elprintf(EL_UIO, "strange r%i: [%06x] %04x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
283 | return d;\r |
284 | }\r |
285 | \r |
cc68a136 |
286 | \r |
287 | //extern UINT32 mz80GetRegisterValue(void *, UINT32);\r |
288 | \r |
fa1e5e29 |
289 | static void OtherWrite8End(u32 a,u32 d,int realsize)\r |
cc68a136 |
290 | {\r |
cc68a136 |
291 | // sram\r |
cc68a136 |
292 | if(a >= SRam.start && a <= SRam.end) {\r |
1dceadae |
293 | elprintf(EL_SRAMIO, "sram w8 [%06x] %02x @ %06x", a, d, SekPc);\r |
7969166e |
294 | SRAMWrite(a, d);\r |
cc68a136 |
295 | return;\r |
296 | }\r |
297 | \r |
298 | #ifdef _ASM_MEMORY_C\r |
299 | // special ROM hardware (currently only banking and sram reg supported)\r |
300 | if((a&0xfffff1) == 0xA130F1) {\r |
301 | PicoWriteRomHW_SSF2(a, d); // SSF2 or SRAM\r |
302 | return;\r |
303 | }\r |
304 | #else\r |
305 | // sram access register\r |
306 | if(a == 0xA130F1) {\r |
1dceadae |
307 | elprintf(EL_SRAMIO, "sram reg=%02x", d);\r |
721cd396 |
308 | Pico.m.sram_reg &= ~3;\r |
309 | Pico.m.sram_reg |= (u8)(d&3);\r |
cc68a136 |
310 | return;\r |
311 | }\r |
312 | #endif\r |
1dceadae |
313 | elprintf(EL_UIO, "strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
314 | \r |
cc68a136 |
315 | // for games with simple protection devices, discovered by Haze\r |
757f8dae |
316 | if ((a>>22) == 1)\r |
cc68a136 |
317 | Pico.m.prot_bytes[(a>>2)&1] = (u8)d;\r |
318 | }\r |
319 | \r |
fa1e5e29 |
320 | #include "MemoryCmn.c"\r |
321 | \r |
cc68a136 |
322 | \r |
323 | // -----------------------------------------------------------------\r |
324 | // Read Rom and read Ram\r |
325 | \r |
326 | #ifndef _ASM_MEMORY_C\r |
8ab3e3c1 |
327 | PICO_INTERNAL_ASM u32 PicoRead8(u32 a)\r |
cc68a136 |
328 | {\r |
329 | u32 d=0;\r |
330 | \r |
331 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
332 | \r |
333 | a&=0xffffff;\r |
334 | \r |
03e4f2a3 |
335 | #ifndef EMU_CORE_DEBUG\r |
cc68a136 |
336 | // sram\r |
b5e5172d |
337 | if (a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg&5)) {\r |
7969166e |
338 | d = SRAMRead(a);\r |
1dceadae |
339 | elprintf(EL_SRAMIO, "sram r8 [%06x] %02x @ %06x", a, d, SekPc);\r |
7969166e |
340 | goto end;\r |
cc68a136 |
341 | }\r |
342 | #endif\r |
343 | \r |
344 | if (a<Pico.romsize) { d = *(u8 *)(Pico.rom+(a^1)); goto end; } // Rom\r |
4f65685b |
345 | log_io(a, 8, 0);\r |
cc68a136 |
346 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
347 | \r |
b542be46 |
348 | if ((a&0xe700e0)==0xc00000) // VDP\r |
349 | d=PicoVideoRead(a);\r |
350 | else d=OtherRead16(a&~1, 8);\r |
351 | if ((a&1)==0) d>>=8;\r |
352 | \r |
81fda4e8 |
353 | end:\r |
ca61ee42 |
354 | elprintf(EL_IO, "r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
03e4f2a3 |
355 | #ifdef EMU_CORE_DEBUG\r |
b5e5172d |
356 | if (a>=Pico.romsize) {\r |
cc68a136 |
357 | lastread_a = a;\r |
358 | lastread_d[lrp_cyc++&15] = (u8)d;\r |
359 | }\r |
360 | #endif\r |
0af33fe0 |
361 | return d;\r |
cc68a136 |
362 | }\r |
363 | \r |
8ab3e3c1 |
364 | PICO_INTERNAL_ASM u32 PicoRead16(u32 a)\r |
cc68a136 |
365 | {\r |
0af33fe0 |
366 | u32 d=0;\r |
cc68a136 |
367 | \r |
368 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
369 | \r |
370 | a&=0xfffffe;\r |
371 | \r |
03e4f2a3 |
372 | #ifndef EMU_CORE_DEBUG\r |
cc68a136 |
373 | // sram\r |
b5e5172d |
374 | if (a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg&5)) {\r |
9dc09829 |
375 | d = SRAMRead16(a);\r |
1dceadae |
376 | elprintf(EL_SRAMIO, "sram r16 [%06x] %04x @ %06x", a, d, SekPc);\r |
cc68a136 |
377 | goto end;\r |
378 | }\r |
379 | #endif\r |
380 | \r |
381 | if (a<Pico.romsize) { d = *(u16 *)(Pico.rom+a); goto end; } // Rom\r |
4f65685b |
382 | log_io(a, 16, 0);\r |
cc68a136 |
383 | \r |
b542be46 |
384 | if ((a&0xe700e0)==0xc00000)\r |
385 | d = PicoVideoRead(a);\r |
386 | else d = OtherRead16(a, 16);\r |
cc68a136 |
387 | \r |
1dceadae |
388 | end:\r |
ca61ee42 |
389 | elprintf(EL_IO, "r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
03e4f2a3 |
390 | #ifdef EMU_CORE_DEBUG\r |
b5e5172d |
391 | if (a>=Pico.romsize) {\r |
cc68a136 |
392 | lastread_a = a;\r |
393 | lastread_d[lrp_cyc++&15] = d;\r |
394 | }\r |
395 | #endif\r |
396 | return d;\r |
397 | }\r |
398 | \r |
8ab3e3c1 |
399 | PICO_INTERNAL_ASM u32 PicoRead32(u32 a)\r |
cc68a136 |
400 | {\r |
401 | u32 d=0;\r |
402 | \r |
403 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
404 | \r |
405 | a&=0xfffffe;\r |
406 | \r |
407 | // sram\r |
7969166e |
408 | if(a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg&5)) {\r |
9dc09829 |
409 | d = (SRAMRead16(a)<<16)|SRAMRead16(a+2);\r |
1dceadae |
410 | elprintf(EL_SRAMIO, "sram r32 [%06x] %08x @ %06x", a, d, SekPc);\r |
cc68a136 |
411 | goto end;\r |
412 | }\r |
413 | \r |
414 | if (a<Pico.romsize) { u16 *pm=(u16 *)(Pico.rom+a); d = (pm[0]<<16)|pm[1]; goto end; } // Rom\r |
4f65685b |
415 | log_io(a, 32, 0);\r |
cc68a136 |
416 | \r |
b542be46 |
417 | if ((a&0xe700e0)==0xc00000)\r |
418 | d = (PicoVideoRead(a)<<16)|PicoVideoRead(a+2);\r |
419 | else d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
cc68a136 |
420 | \r |
1dceadae |
421 | end:\r |
ca61ee42 |
422 | elprintf(EL_IO, "r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
03e4f2a3 |
423 | #ifdef EMU_CORE_DEBUG\r |
b5e5172d |
424 | if (a>=Pico.romsize) {\r |
cc68a136 |
425 | lastread_a = a;\r |
426 | lastread_d[lrp_cyc++&15] = d;\r |
427 | }\r |
428 | #endif\r |
429 | return d;\r |
430 | }\r |
431 | #endif\r |
432 | \r |
433 | // -----------------------------------------------------------------\r |
434 | // Write Ram\r |
435 | \r |
3ec29f01 |
436 | #if !defined(_ASM_MEMORY_C) || defined(_ASM_MEMORY_C_AMIPS)\r |
8ab3e3c1 |
437 | PICO_INTERNAL_ASM void PicoWrite8(u32 a,u8 d)\r |
cc68a136 |
438 | {\r |
ca61ee42 |
439 | elprintf(EL_IO, "w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
03e4f2a3 |
440 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
441 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
442 | #endif\r |
cc68a136 |
443 | \r |
d9153729 |
444 | if ((a&0xe00000)==0xe00000) { *(u8 *)(Pico.ram+((a^1)&0xffff))=d; return; } // Ram\r |
4f65685b |
445 | log_io(a, 8, 1);\r |
cc68a136 |
446 | \r |
447 | a&=0xffffff;\r |
fb9bec94 |
448 | OtherWrite8(a,d);\r |
cc68a136 |
449 | }\r |
e5503e2f |
450 | #endif\r |
cc68a136 |
451 | \r |
8ab3e3c1 |
452 | void PicoWrite16(u32 a,u16 d)\r |
cc68a136 |
453 | {\r |
ca61ee42 |
454 | elprintf(EL_IO, "w16: %06x, %04x", a&0xffffff, d);\r |
03e4f2a3 |
455 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
456 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
457 | #endif\r |
cc68a136 |
458 | \r |
459 | if ((a&0xe00000)==0xe00000) { *(u16 *)(Pico.ram+(a&0xfffe))=d; return; } // Ram\r |
4f65685b |
460 | log_io(a, 16, 1);\r |
cc68a136 |
461 | \r |
462 | a&=0xfffffe;\r |
b542be46 |
463 | if ((a&0xe700e0)==0xc00000) { PicoVideoWrite(a,(u16)d); return; } // VDP\r |
cc68a136 |
464 | OtherWrite16(a,d);\r |
465 | }\r |
466 | \r |
8ab3e3c1 |
467 | static void PicoWrite32(u32 a,u32 d)\r |
cc68a136 |
468 | {\r |
ca61ee42 |
469 | elprintf(EL_IO, "w32: %06x, %08x", a&0xffffff, d);\r |
03e4f2a3 |
470 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
471 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
472 | #endif\r |
473 | \r |
474 | if ((a&0xe00000)==0xe00000)\r |
475 | {\r |
476 | // Ram:\r |
477 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
478 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
479 | return;\r |
480 | }\r |
4f65685b |
481 | log_io(a, 32, 1);\r |
cc68a136 |
482 | \r |
483 | a&=0xfffffe;\r |
b542be46 |
484 | if ((a&0xe700e0)==0xc00000)\r |
485 | {\r |
486 | // VDP:\r |
487 | PicoVideoWrite(a, (u16)(d>>16));\r |
488 | PicoVideoWrite(a+2,(u16)d);\r |
489 | return;\r |
490 | }\r |
491 | \r |
cc68a136 |
492 | OtherWrite16(a, (u16)(d>>16));\r |
493 | OtherWrite16(a+2,(u16)d);\r |
494 | }\r |
495 | \r |
496 | \r |
497 | // -----------------------------------------------------------------\r |
f53f286a |
498 | \r |
f8ef8ff7 |
499 | static void OtherWrite16End(u32 a,u32 d,int realsize)\r |
500 | {\r |
501 | PicoWrite8Hook(a, d>>8, realsize);\r |
502 | PicoWrite8Hook(a+1,d&0xff, realsize);\r |
503 | }\r |
f53f286a |
504 | \r |
f8ef8ff7 |
505 | u32 (*PicoRead16Hook) (u32 a, int realsize) = OtherRead16End;\r |
506 | void (*PicoWrite8Hook) (u32 a, u32 d, int realsize) = OtherWrite8End;\r |
507 | void (*PicoWrite16Hook)(u32 a, u32 d, int realsize) = OtherWrite16End;\r |
508 | \r |
509 | PICO_INTERNAL void PicoMemResetHooks(void)\r |
cc68a136 |
510 | {\r |
f53f286a |
511 | // default unmapped/cart specific handlers\r |
512 | PicoRead16Hook = OtherRead16End;\r |
513 | PicoWrite8Hook = OtherWrite8End;\r |
f8ef8ff7 |
514 | PicoWrite16Hook = OtherWrite16End;\r |
515 | }\r |
f53f286a |
516 | \r |
9037e45d |
517 | #ifdef EMU_M68K\r |
518 | static void m68k_mem_setup(void);\r |
519 | #endif\r |
520 | \r |
f8ef8ff7 |
521 | PICO_INTERNAL void PicoMemSetup(void)\r |
522 | {\r |
cc68a136 |
523 | // Setup memory callbacks:\r |
70357ce5 |
524 | #ifdef EMU_C68K\r |
3aa1e148 |
525 | PicoCpuCM68k.checkpc=PicoCheckPc;\r |
526 | PicoCpuCM68k.fetch8 =PicoCpuCM68k.read8 =PicoRead8;\r |
527 | PicoCpuCM68k.fetch16=PicoCpuCM68k.read16=PicoRead16;\r |
528 | PicoCpuCM68k.fetch32=PicoCpuCM68k.read32=PicoRead32;\r |
529 | PicoCpuCM68k.write8 =PicoWrite8;\r |
530 | PicoCpuCM68k.write16=PicoWrite16;\r |
531 | PicoCpuCM68k.write32=PicoWrite32;\r |
cc68a136 |
532 | #endif\r |
70357ce5 |
533 | #ifdef EMU_F68K\r |
3aa1e148 |
534 | PicoCpuFM68k.read_byte =PicoRead8;\r |
535 | PicoCpuFM68k.read_word =PicoRead16;\r |
536 | PicoCpuFM68k.read_long =PicoRead32;\r |
537 | PicoCpuFM68k.write_byte=PicoWrite8;\r |
538 | PicoCpuFM68k.write_word=PicoWrite16;\r |
539 | PicoCpuFM68k.write_long=PicoWrite32;\r |
540 | \r |
541 | // setup FAME fetchmap\r |
542 | {\r |
543 | int i;\r |
9037e45d |
544 | // by default, point everything to first 64k of ROM\r |
3aa1e148 |
545 | for (i = 0; i < M68K_FETCHBANK1; i++)\r |
546 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom - (i<<(24-FAMEC_FETCHBITS));\r |
547 | // now real ROM\r |
548 | for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < Pico.romsize; i++)\r |
549 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom;\r |
550 | // .. and RAM\r |
551 | for (i = M68K_FETCHBANK1*14/16; i < M68K_FETCHBANK1; i++)\r |
552 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.ram - (i<<(24-FAMEC_FETCHBITS));\r |
553 | }\r |
70357ce5 |
554 | #endif\r |
9037e45d |
555 | #ifdef EMU_M68K\r |
556 | m68k_mem_setup();\r |
557 | #endif\r |
cc68a136 |
558 | }\r |
559 | \r |
9037e45d |
560 | /* some nasty things below :( */\r |
cc68a136 |
561 | #ifdef EMU_M68K\r |
9037e45d |
562 | unsigned int (*pm68k_read_memory_8) (unsigned int address) = NULL;\r |
563 | unsigned int (*pm68k_read_memory_16)(unsigned int address) = NULL;\r |
564 | unsigned int (*pm68k_read_memory_32)(unsigned int address) = NULL;\r |
565 | void (*pm68k_write_memory_8) (unsigned int address, unsigned char value) = NULL;\r |
566 | void (*pm68k_write_memory_16)(unsigned int address, unsigned short value) = NULL;\r |
567 | void (*pm68k_write_memory_32)(unsigned int address, unsigned int value) = NULL;\r |
568 | unsigned int (*pm68k_read_memory_pcr_8) (unsigned int address) = NULL;\r |
569 | unsigned int (*pm68k_read_memory_pcr_16)(unsigned int address) = NULL;\r |
570 | unsigned int (*pm68k_read_memory_pcr_32)(unsigned int address) = NULL;\r |
571 | \r |
572 | // these are here for core debugging mode\r |
b5e5172d |
573 | static unsigned int m68k_read_8 (unsigned int a, int do_fake)\r |
574 | {\r |
cc68a136 |
575 | a&=0xffffff;\r |
b5e5172d |
576 | if(a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k) return *(u8 *)(Pico.rom+(a^1)); // Rom\r |
03e4f2a3 |
577 | #ifdef EMU_CORE_DEBUG\r |
2d0b15bb |
578 | if(do_fake&&((ppop&0x3f)==0x3a||(ppop&0x3f)==0x3b)) return lastread_d[lrp_mus++&15];\r |
2270612a |
579 | #endif\r |
9037e45d |
580 | return pm68k_read_memory_pcr_8(a);\r |
cc68a136 |
581 | }\r |
b5e5172d |
582 | static unsigned int m68k_read_16(unsigned int a, int do_fake)\r |
583 | {\r |
cc68a136 |
584 | a&=0xffffff;\r |
b5e5172d |
585 | if(a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k) return *(u16 *)(Pico.rom+(a&~1)); // Rom\r |
03e4f2a3 |
586 | #ifdef EMU_CORE_DEBUG\r |
2d0b15bb |
587 | if(do_fake&&((ppop&0x3f)==0x3a||(ppop&0x3f)==0x3b)) return lastread_d[lrp_mus++&15];\r |
2270612a |
588 | #endif\r |
9037e45d |
589 | return pm68k_read_memory_pcr_16(a);\r |
cc68a136 |
590 | }\r |
b5e5172d |
591 | static unsigned int m68k_read_32(unsigned int a, int do_fake)\r |
592 | {\r |
cc68a136 |
593 | a&=0xffffff;\r |
b5e5172d |
594 | if(a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
03e4f2a3 |
595 | #ifdef EMU_CORE_DEBUG\r |
2d0b15bb |
596 | if(do_fake&&((ppop&0x3f)==0x3a||(ppop&0x3f)==0x3b)) return lastread_d[lrp_mus++&15];\r |
2270612a |
597 | #endif\r |
9037e45d |
598 | return pm68k_read_memory_pcr_32(a);\r |
cc68a136 |
599 | }\r |
600 | \r |
2d0b15bb |
601 | unsigned int m68k_read_pcrelative_8 (unsigned int a) { return m68k_read_8 (a, 1); }\r |
602 | unsigned int m68k_read_pcrelative_16(unsigned int a) { return m68k_read_16(a, 1); }\r |
603 | unsigned int m68k_read_pcrelative_32(unsigned int a) { return m68k_read_32(a, 1); }\r |
604 | unsigned int m68k_read_immediate_16(unsigned int a) { return m68k_read_16(a, 0); }\r |
605 | unsigned int m68k_read_immediate_32(unsigned int a) { return m68k_read_32(a, 0); }\r |
606 | unsigned int m68k_read_disassembler_8 (unsigned int a) { return m68k_read_8 (a, 0); }\r |
607 | unsigned int m68k_read_disassembler_16(unsigned int a) { return m68k_read_16(a, 0); }\r |
608 | unsigned int m68k_read_disassembler_32(unsigned int a) { return m68k_read_32(a, 0); }\r |
cc68a136 |
609 | \r |
9037e45d |
610 | static unsigned int m68k_read_memory_pcr_8(unsigned int a)\r |
611 | {\r |
612 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
613 | return 0;\r |
614 | }\r |
615 | \r |
616 | static unsigned int m68k_read_memory_pcr_16(unsigned int a)\r |
617 | {\r |
618 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
619 | return 0;\r |
620 | }\r |
621 | \r |
622 | static unsigned int m68k_read_memory_pcr_32(unsigned int a)\r |
623 | {\r |
624 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
625 | return 0;\r |
626 | }\r |
627 | \r |
03e4f2a3 |
628 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
629 | // ROM only\r |
2d0b15bb |
630 | unsigned int m68k_read_memory_8(unsigned int a)\r |
631 | {\r |
632 | u8 d;\r |
b5e5172d |
633 | if (a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k)\r |
634 | d = *(u8 *) (Pico.rom+(a^1));\r |
2d0b15bb |
635 | else d = (u8) lastread_d[lrp_mus++&15];\r |
ca61ee42 |
636 | elprintf(EL_IO, "r8_mu : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
2d0b15bb |
637 | return d;\r |
638 | }\r |
639 | unsigned int m68k_read_memory_16(unsigned int a)\r |
640 | {\r |
641 | u16 d;\r |
b5e5172d |
642 | if (a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k)\r |
643 | d = *(u16 *)(Pico.rom+(a&~1));\r |
2d0b15bb |
644 | else d = (u16) lastread_d[lrp_mus++&15];\r |
ca61ee42 |
645 | elprintf(EL_IO, "r16_mu: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
2d0b15bb |
646 | return d;\r |
647 | }\r |
648 | unsigned int m68k_read_memory_32(unsigned int a)\r |
649 | {\r |
650 | u32 d;\r |
b5e5172d |
651 | if (a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k)\r |
652 | { u16 *pm=(u16 *)(Pico.rom+(a&~1));d=(pm[0]<<16)|pm[1]; }\r |
653 | else if (a <= 0x78) d = m68k_read_32(a, 0);\r |
2d0b15bb |
654 | else d = lastread_d[lrp_mus++&15];\r |
ca61ee42 |
655 | elprintf(EL_IO, "r32_mu: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
2d0b15bb |
656 | return d;\r |
657 | }\r |
cc68a136 |
658 | \r |
659 | // ignore writes, Cyclone already done that\r |
660 | void m68k_write_memory_8(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }\r |
661 | void m68k_write_memory_16(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }\r |
662 | void m68k_write_memory_32(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }\r |
cc68a136 |
663 | \r |
9037e45d |
664 | #else // if !EMU_CORE_DEBUG\r |
cc68a136 |
665 | \r |
9037e45d |
666 | /* it appears that Musashi doesn't always mask the unused bits */\r |
667 | unsigned int m68k_read_memory_8 (unsigned int address) { return pm68k_read_memory_8 (address) & 0xff; }\r |
668 | unsigned int m68k_read_memory_16(unsigned int address) { return pm68k_read_memory_16(address) & 0xffff; }\r |
669 | unsigned int m68k_read_memory_32(unsigned int address) { return pm68k_read_memory_32(address); }\r |
670 | void m68k_write_memory_8 (unsigned int address, unsigned int value) { pm68k_write_memory_8 (address, (u8)value); }\r |
671 | void m68k_write_memory_16(unsigned int address, unsigned int value) { pm68k_write_memory_16(address,(u16)value); }\r |
672 | void m68k_write_memory_32(unsigned int address, unsigned int value) { pm68k_write_memory_32(address, value); }\r |
673 | #endif // !EMU_CORE_DEBUG\r |
674 | \r |
675 | static void m68k_mem_setup(void)\r |
676 | {\r |
677 | pm68k_read_memory_8 = PicoRead8;\r |
678 | pm68k_read_memory_16 = PicoRead16;\r |
679 | pm68k_read_memory_32 = PicoRead32;\r |
680 | pm68k_write_memory_8 = PicoWrite8;\r |
681 | pm68k_write_memory_16 = PicoWrite16;\r |
682 | pm68k_write_memory_32 = PicoWrite32;\r |
683 | pm68k_read_memory_pcr_8 = m68k_read_memory_pcr_8;\r |
684 | pm68k_read_memory_pcr_16 = m68k_read_memory_pcr_16;\r |
685 | pm68k_read_memory_pcr_32 = m68k_read_memory_pcr_32;\r |
cc68a136 |
686 | }\r |
cc68a136 |
687 | #endif // EMU_M68K\r |
688 | \r |
689 | \r |
690 | // -----------------------------------------------------------------\r |
691 | // z80 memhandlers\r |
692 | \r |
eff55556 |
693 | PICO_INTERNAL unsigned char z80_read(unsigned short a)\r |
cc68a136 |
694 | {\r |
695 | u8 ret = 0;\r |
696 | \r |
697 | if ((a>>13)==2) // 0x4000-0x5fff (Charles MacDonald)\r |
698 | {\r |
602133e1 |
699 | if (PicoOpt&POPT_EN_FM) ret = (u8) YM2612Read();\r |
03e4f2a3 |
700 | return ret;\r |
cc68a136 |
701 | }\r |
702 | \r |
703 | if (a>=0x8000)\r |
704 | {\r |
81fda4e8 |
705 | extern u32 PicoReadM68k8(u32 a);\r |
cc68a136 |
706 | u32 addr68k;\r |
707 | addr68k=Pico.m.z80_bank68k<<15;\r |
708 | addr68k+=a&0x7fff;\r |
709 | \r |
602133e1 |
710 | if (PicoAHW & PAHW_MCD)\r |
81fda4e8 |
711 | ret = PicoReadM68k8(addr68k);\r |
712 | else ret = PicoRead8(addr68k);\r |
69996cb7 |
713 | elprintf(EL_Z80BNK, "z80->68k r8 [%06x] %02x", addr68k, ret);\r |
03e4f2a3 |
714 | return ret;\r |
cc68a136 |
715 | }\r |
716 | \r |
b542be46 |
717 | // should not be needed, cores should be able to access RAM themselves\r |
03e4f2a3 |
718 | if (a<0x4000) return Pico.zram[a&0x1fff];\r |
cc68a136 |
719 | \r |
69996cb7 |
720 | elprintf(EL_ANOMALY, "z80 invalid r8 [%06x] %02x", a, ret);\r |
cc68a136 |
721 | return ret;\r |
722 | }\r |
723 | \r |
a4221917 |
724 | #ifndef _USE_CZ80\r |
eff55556 |
725 | PICO_INTERNAL_ASM void z80_write(unsigned char data, unsigned short a)\r |
a4221917 |
726 | #else\r |
727 | PICO_INTERNAL_ASM void z80_write(unsigned int a, unsigned char data)\r |
728 | #endif\r |
cc68a136 |
729 | {\r |
cc68a136 |
730 | if ((a>>13)==2) // 0x4000-0x5fff (Charles MacDonald)\r |
731 | {\r |
602133e1 |
732 | if(PicoOpt&POPT_EN_FM) emustatus|=YM2612Write(a, data) & 1;\r |
cc68a136 |
733 | return;\r |
734 | }\r |
735 | \r |
736 | if ((a&0xfff9)==0x7f11) // 7f11 7f13 7f15 7f17\r |
737 | {\r |
602133e1 |
738 | if(PicoOpt&POPT_EN_PSG) SN76496Write(data);\r |
cc68a136 |
739 | return;\r |
740 | }\r |
741 | \r |
742 | if ((a>>8)==0x60)\r |
743 | {\r |
744 | Pico.m.z80_bank68k>>=1;\r |
745 | Pico.m.z80_bank68k|=(data&1)<<8;\r |
746 | Pico.m.z80_bank68k&=0x1ff; // 9 bits and filled in the new top one\r |
747 | return;\r |
748 | }\r |
749 | \r |
750 | if (a>=0x8000)\r |
751 | {\r |
81fda4e8 |
752 | extern void PicoWriteM68k8(u32 a,u8 d);\r |
cc68a136 |
753 | u32 addr68k;\r |
754 | addr68k=Pico.m.z80_bank68k<<15;\r |
755 | addr68k+=a&0x7fff;\r |
69996cb7 |
756 | elprintf(EL_Z80BNK, "z80->68k w8 [%06x] %02x", addr68k, data);\r |
602133e1 |
757 | if (PicoAHW & PAHW_MCD)\r |
81fda4e8 |
758 | PicoWriteM68k8(addr68k, data);\r |
759 | else PicoWrite8(addr68k, data);\r |
cc68a136 |
760 | return;\r |
761 | }\r |
762 | \r |
b542be46 |
763 | // should not be needed\r |
cc68a136 |
764 | if (a<0x4000) { Pico.zram[a&0x1fff]=data; return; }\r |
69996cb7 |
765 | \r |
766 | elprintf(EL_ANOMALY, "z80 invalid w8 [%06x] %02x", a, data);\r |
cc68a136 |
767 | }\r |
768 | \r |
a4221917 |
769 | #ifndef _USE_CZ80\r |
770 | PICO_INTERNAL unsigned short z80_read16(unsigned short a)\r |
771 | {\r |
a4221917 |
772 | return (u16) ( (u16)z80_read(a) | ((u16)z80_read((u16)(a+1))<<8) );\r |
773 | }\r |
774 | \r |
eff55556 |
775 | PICO_INTERNAL void z80_write16(unsigned short data, unsigned short a)\r |
cc68a136 |
776 | {\r |
cc68a136 |
777 | z80_write((unsigned char) data,a);\r |
778 | z80_write((unsigned char)(data>>8),(u16)(a+1));\r |
779 | }\r |
a4221917 |
780 | #endif\r |
cc68a136 |
781 | \r |