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 |
2aa27095 |
92 | PICO_INTERNAL void PicoInitPc(u32 pc)\r |
cc68a136 |
93 | {\r |
94 | PicoCheckPc(pc);\r |
cc68a136 |
95 | }\r |
96 | \r |
97 | #ifndef _ASM_MEMORY_C\r |
eff55556 |
98 | PICO_INTERNAL_ASM void PicoMemReset(void)\r |
cc68a136 |
99 | {\r |
100 | }\r |
101 | #endif\r |
102 | \r |
103 | // -----------------------------------------------------------------\r |
104 | \r |
e5503e2f |
105 | int PadRead(int i)\r |
106 | {\r |
107 | int pad,value,data_reg;\r |
108 | pad=~PicoPad[i]; // Get inverse of pad MXYZ SACB RLDU\r |
109 | data_reg=Pico.ioports[i+1];\r |
110 | \r |
111 | // orr the bits, which are set as output\r |
112 | value = data_reg&(Pico.ioports[i+4]|0x80);\r |
113 | \r |
602133e1 |
114 | if (PicoOpt & POPT_6BTN_PAD)\r |
115 | {\r |
e5503e2f |
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 |
9dc09829 |
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 |
9dc09829 |
148 | if (sreg & 4) // EEPROM read\r |
7969166e |
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 |
9dc09829 |
154 | #ifndef _ASM_MEMORY_C\r |
155 | static\r |
156 | #endif\r |
157 | u32 SRAMRead16(u32 a)\r |
158 | {\r |
159 | u32 d;\r |
160 | if (Pico.m.sram_reg & 4) {\r |
161 | d = SRAMReadEEPROM();\r |
162 | d |= d << 8;\r |
163 | } else {\r |
164 | u8 *pm=(u8 *)(SRam.data-SRam.start+a);\r |
165 | d =*pm++ << 8;\r |
166 | d|=*pm++;\r |
167 | }\r |
168 | return d;\r |
169 | }\r |
170 | \r |
7969166e |
171 | static void SRAMWrite(u32 a, u32 d)\r |
172 | {\r |
7969166e |
173 | unsigned int sreg = Pico.m.sram_reg;\r |
174 | if(!(sreg & 0x10)) {\r |
175 | // not detected SRAM\r |
176 | if((a&~1)==0x200000) {\r |
1dceadae |
177 | elprintf(EL_SRAMIO, "eeprom detected.");\r |
178 | sreg|=4; // this should be a game with EEPROM (like NBA Jam)\r |
7969166e |
179 | SRam.start=0x200000; SRam.end=SRam.start+1;\r |
1dceadae |
180 | } else\r |
181 | elprintf(EL_SRAMIO, "normal sram detected.");\r |
182 | sreg|=0x10;\r |
183 | Pico.m.sram_reg=sreg;\r |
7969166e |
184 | }\r |
185 | if(sreg & 4) { // EEPROM write\r |
1dceadae |
186 | // this diff must be at most 16 for NBA Jam to work\r |
187 | if(SekCyclesDoneT()-lastSSRamWrite < 16) {\r |
7969166e |
188 | // just update pending state\r |
1dceadae |
189 | elprintf(EL_EEPROM, "eeprom: skip because cycles=%i", SekCyclesDoneT()-lastSSRamWrite);\r |
7969166e |
190 | SRAMUpdPending(a, d);\r |
191 | } else {\r |
1dceadae |
192 | int old=sreg;\r |
7969166e |
193 | SRAMWriteEEPROM(sreg>>6); // execute pending\r |
194 | SRAMUpdPending(a, d);\r |
1dceadae |
195 | if ((old^Pico.m.sram_reg)&0xc0) // update time only if SDA/SCL changed\r |
196 | lastSSRamWrite = SekCyclesDoneT();\r |
7969166e |
197 | }\r |
198 | } else if(!(sreg & 2)) {\r |
199 | u8 *pm=(u8 *)(SRam.data-SRam.start+a);\r |
200 | if(*pm != (u8)d) {\r |
201 | SRam.changed = 1;\r |
202 | *pm=(u8)d;\r |
203 | }\r |
204 | }\r |
205 | }\r |
cc68a136 |
206 | \r |
207 | // for nonstandard reads\r |
f53f286a |
208 | static u32 OtherRead16End(u32 a, int realsize)\r |
cc68a136 |
209 | {\r |
210 | u32 d=0;\r |
211 | \r |
9037e45d |
212 | // 32x test\r |
213 | /*\r |
214 | if (a == 0xa130ec) { d = 0x4d41; goto end; } // MA\r |
215 | else if (a == 0xa130ee) { d = 0x5253; goto end; } // RS\r |
216 | else if (a == 0xa15100) { d = 0x0080; goto end; }\r |
217 | else\r |
218 | */\r |
219 | \r |
cc68a136 |
220 | // for games with simple protection devices, discovered by Haze\r |
221 | // some dumb detection is used, but that should be enough to make things work\r |
222 | if ((a>>22) == 1 && Pico.romsize >= 512*1024) {\r |
223 | if (*(int *)(Pico.rom+0x123e4) == 0x00550c39 && *(int *)(Pico.rom+0x123e8) == 0x00000040) { // Super Bubble Bobble (Unl) [!]\r |
4f672280 |
224 | if (a == 0x400000) { d=0x55<<8; goto end; }\r |
225 | else if (a == 0x400002) { d=0x0f<<8; goto end; }\r |
226 | }\r |
227 | else if (*(int *)(Pico.rom+0x008c4) == 0x66240055 && *(int *)(Pico.rom+0x008c8) == 0x00404df9) { // Smart Mouse (Unl)\r |
228 | if (a == 0x400000) { d=0x55<<8; goto end; }\r |
229 | else if (a == 0x400002) { d=0x0f<<8; goto end; }\r |
230 | else if (a == 0x400004) { d=0xaa<<8; goto end; }\r |
231 | else if (a == 0x400006) { d=0xf0<<8; goto end; }\r |
232 | }\r |
233 | else if (*(int *)(Pico.rom+0x00404) == 0x00a90600 && *(int *)(Pico.rom+0x00408) == 0x6708b013) { // King of Fighters '98, The (Unl) [!]\r |
234 | if (a == 0x480000 || a == 0x4800e0 || a == 0x4824a0 || a == 0x488880) { d=0xaa<<8; goto end; }\r |
235 | else if (a == 0x4a8820) { d=0x0a<<8; goto end; }\r |
236 | // there is also a read @ 0x4F8820 which needs 0, but that is returned in default case\r |
237 | }\r |
238 | else if (*(int *)(Pico.rom+0x01b24) == 0x004013f9 && *(int *)(Pico.rom+0x01b28) == 0x00ff0000) { // Mahjong Lover (Unl) [!]\r |
239 | if (a == 0x400000) { d=0x90<<8; goto end; }\r |
240 | 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 |
241 | // checks the result, which is of the above one. Left it just in case.\r |
242 | }\r |
243 | else if (*(int *)(Pico.rom+0x05254) == 0x0c3962d0 && *(int *)(Pico.rom+0x05258) == 0x00400055) { // Elf Wor (Unl)\r |
244 | if (a == 0x400000) { d=0x55<<8; goto end; }\r |
245 | else if (a == 0x400004) { d=0xc9<<8; goto end; } // this check is done if the above one fails\r |
246 | else if (a == 0x400002) { d=0x0f<<8; goto end; }\r |
247 | else if (a == 0x400006) { d=0x18<<8; goto end; } // similar to above\r |
248 | }\r |
cc68a136 |
249 | // our default behaviour is to return whatever was last written a 0x400000-0x7fffff range (used by Squirrel King (R) [!])\r |
4f672280 |
250 | // Lion King II, The (Unl) [!] writes @ 400000 and wants to get that val @ 400002 and wites another val\r |
251 | // @ 400004 which is expected @ 400006, so we really remember 2 values here\r |
cc68a136 |
252 | d = Pico.m.prot_bytes[(a>>2)&1]<<8;\r |
253 | }\r |
254 | else if (a == 0xa13000 && Pico.romsize >= 1024*1024) {\r |
255 | if (*(int *)(Pico.rom+0xc8af0) == 0x30133013 && *(int *)(Pico.rom+0xc8af4) == 0x000f0240) { // Rockman X3 (Unl) [!]\r |
4f672280 |
256 | d=0x0c; goto end;\r |
257 | }\r |
cc68a136 |
258 | else if (*(int *)(Pico.rom+0x28888) == 0x07fc0000 && *(int *)(Pico.rom+0x2888c) == 0x4eb94e75) { // Bug's Life, A (Unl) [!]\r |
4f672280 |
259 | d=0x28; goto end; // does the check from RAM\r |
260 | }\r |
cc68a136 |
261 | else if (*(int *)(Pico.rom+0xc8778) == 0x30133013 && *(int *)(Pico.rom+0xc877c) == 0x000f0240) { // Super Mario Bros. (Unl) [!]\r |
4f672280 |
262 | d=0x0c; goto end; // seems to be the same code as in Rockman X3 (Unl) [!]\r |
263 | }\r |
cc68a136 |
264 | else if (*(int *)(Pico.rom+0xf20ec) == 0x30143013 && *(int *)(Pico.rom+0xf20f0) == 0x000f0200) { // Super Mario 2 1998 (Unl) [!]\r |
4f672280 |
265 | d=0x0a; goto end;\r |
266 | }\r |
cc68a136 |
267 | }\r |
268 | else if (a == 0xa13002) { // Pocket Monsters (Unl)\r |
269 | d=0x01; goto end;\r |
270 | }\r |
271 | else if (a == 0xa1303E) { // Pocket Monsters (Unl)\r |
272 | d=0x1f; goto end;\r |
273 | }\r |
274 | else if (a == 0x30fe02) {\r |
275 | // Virtua Racing - just for fun\r |
4f672280 |
276 | // this seems to be some flag that SVP is ready or something similar\r |
cc68a136 |
277 | d=1; goto end;\r |
278 | }\r |
279 | \r |
280 | end:\r |
1dceadae |
281 | elprintf(EL_UIO, "strange r%i: [%06x] %04x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
282 | return d;\r |
283 | }\r |
284 | \r |
cc68a136 |
285 | \r |
286 | //extern UINT32 mz80GetRegisterValue(void *, UINT32);\r |
287 | \r |
fa1e5e29 |
288 | static void OtherWrite8End(u32 a,u32 d,int realsize)\r |
cc68a136 |
289 | {\r |
cc68a136 |
290 | // sram\r |
cc68a136 |
291 | if(a >= SRam.start && a <= SRam.end) {\r |
1dceadae |
292 | elprintf(EL_SRAMIO, "sram w8 [%06x] %02x @ %06x", a, d, SekPc);\r |
7969166e |
293 | SRAMWrite(a, d);\r |
cc68a136 |
294 | return;\r |
295 | }\r |
296 | \r |
297 | #ifdef _ASM_MEMORY_C\r |
298 | // special ROM hardware (currently only banking and sram reg supported)\r |
299 | if((a&0xfffff1) == 0xA130F1) {\r |
300 | PicoWriteRomHW_SSF2(a, d); // SSF2 or SRAM\r |
301 | return;\r |
302 | }\r |
303 | #else\r |
304 | // sram access register\r |
305 | if(a == 0xA130F1) {\r |
1dceadae |
306 | elprintf(EL_SRAMIO, "sram reg=%02x", d);\r |
721cd396 |
307 | Pico.m.sram_reg &= ~3;\r |
308 | Pico.m.sram_reg |= (u8)(d&3);\r |
cc68a136 |
309 | return;\r |
310 | }\r |
311 | #endif\r |
1dceadae |
312 | elprintf(EL_UIO, "strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
cc68a136 |
313 | \r |
cc68a136 |
314 | // for games with simple protection devices, discovered by Haze\r |
757f8dae |
315 | if ((a>>22) == 1)\r |
cc68a136 |
316 | Pico.m.prot_bytes[(a>>2)&1] = (u8)d;\r |
317 | }\r |
318 | \r |
fa1e5e29 |
319 | #include "MemoryCmn.c"\r |
320 | \r |
cc68a136 |
321 | \r |
322 | // -----------------------------------------------------------------\r |
323 | // Read Rom and read Ram\r |
324 | \r |
325 | #ifndef _ASM_MEMORY_C\r |
8ab3e3c1 |
326 | PICO_INTERNAL_ASM u32 PicoRead8(u32 a)\r |
cc68a136 |
327 | {\r |
328 | u32 d=0;\r |
329 | \r |
330 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
331 | \r |
332 | a&=0xffffff;\r |
333 | \r |
03e4f2a3 |
334 | #ifndef EMU_CORE_DEBUG\r |
cc68a136 |
335 | // sram\r |
b5e5172d |
336 | if (a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg&5)) {\r |
7969166e |
337 | d = SRAMRead(a);\r |
1dceadae |
338 | elprintf(EL_SRAMIO, "sram r8 [%06x] %02x @ %06x", a, d, SekPc);\r |
7969166e |
339 | goto end;\r |
cc68a136 |
340 | }\r |
341 | #endif\r |
342 | \r |
343 | if (a<Pico.romsize) { d = *(u8 *)(Pico.rom+(a^1)); goto end; } // Rom\r |
4f65685b |
344 | log_io(a, 8, 0);\r |
cc68a136 |
345 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
346 | \r |
9761a7d0 |
347 | if ((a&0xe700e0)==0xc00000) { d=PicoVideoRead8(a); goto end; } // VDP\r |
c060a9ab |
348 | \r |
9761a7d0 |
349 | d=OtherRead16(a&~1, 8);\r |
b542be46 |
350 | if ((a&1)==0) d>>=8;\r |
351 | \r |
81fda4e8 |
352 | end:\r |
ca61ee42 |
353 | elprintf(EL_IO, "r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
03e4f2a3 |
354 | #ifdef EMU_CORE_DEBUG\r |
b5e5172d |
355 | if (a>=Pico.romsize) {\r |
cc68a136 |
356 | lastread_a = a;\r |
357 | lastread_d[lrp_cyc++&15] = (u8)d;\r |
358 | }\r |
359 | #endif\r |
0af33fe0 |
360 | return d;\r |
cc68a136 |
361 | }\r |
362 | \r |
8ab3e3c1 |
363 | PICO_INTERNAL_ASM u32 PicoRead16(u32 a)\r |
cc68a136 |
364 | {\r |
0af33fe0 |
365 | u32 d=0;\r |
cc68a136 |
366 | \r |
367 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
368 | \r |
369 | a&=0xfffffe;\r |
370 | \r |
03e4f2a3 |
371 | #ifndef EMU_CORE_DEBUG\r |
cc68a136 |
372 | // sram\r |
b5e5172d |
373 | if (a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg&5)) {\r |
9dc09829 |
374 | d = SRAMRead16(a);\r |
1dceadae |
375 | elprintf(EL_SRAMIO, "sram r16 [%06x] %04x @ %06x", a, d, SekPc);\r |
cc68a136 |
376 | goto end;\r |
377 | }\r |
378 | #endif\r |
379 | \r |
380 | if (a<Pico.romsize) { d = *(u16 *)(Pico.rom+a); goto end; } // Rom\r |
4f65685b |
381 | log_io(a, 16, 0);\r |
cc68a136 |
382 | \r |
b542be46 |
383 | if ((a&0xe700e0)==0xc00000)\r |
384 | d = PicoVideoRead(a);\r |
385 | else d = OtherRead16(a, 16);\r |
cc68a136 |
386 | \r |
1dceadae |
387 | end:\r |
ca61ee42 |
388 | elprintf(EL_IO, "r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
03e4f2a3 |
389 | #ifdef EMU_CORE_DEBUG\r |
b5e5172d |
390 | if (a>=Pico.romsize) {\r |
cc68a136 |
391 | lastread_a = a;\r |
392 | lastread_d[lrp_cyc++&15] = d;\r |
393 | }\r |
394 | #endif\r |
395 | return d;\r |
396 | }\r |
397 | \r |
8ab3e3c1 |
398 | PICO_INTERNAL_ASM u32 PicoRead32(u32 a)\r |
cc68a136 |
399 | {\r |
400 | u32 d=0;\r |
401 | \r |
402 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
403 | \r |
404 | a&=0xfffffe;\r |
405 | \r |
406 | // sram\r |
7969166e |
407 | if(a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg&5)) {\r |
9dc09829 |
408 | d = (SRAMRead16(a)<<16)|SRAMRead16(a+2);\r |
1dceadae |
409 | elprintf(EL_SRAMIO, "sram r32 [%06x] %08x @ %06x", a, d, SekPc);\r |
cc68a136 |
410 | goto end;\r |
411 | }\r |
412 | \r |
413 | if (a<Pico.romsize) { u16 *pm=(u16 *)(Pico.rom+a); d = (pm[0]<<16)|pm[1]; goto end; } // Rom\r |
4f65685b |
414 | log_io(a, 32, 0);\r |
cc68a136 |
415 | \r |
b542be46 |
416 | if ((a&0xe700e0)==0xc00000)\r |
417 | d = (PicoVideoRead(a)<<16)|PicoVideoRead(a+2);\r |
418 | else d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
cc68a136 |
419 | \r |
1dceadae |
420 | end:\r |
ca61ee42 |
421 | elprintf(EL_IO, "r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
03e4f2a3 |
422 | #ifdef EMU_CORE_DEBUG\r |
b5e5172d |
423 | if (a>=Pico.romsize) {\r |
cc68a136 |
424 | lastread_a = a;\r |
425 | lastread_d[lrp_cyc++&15] = d;\r |
426 | }\r |
427 | #endif\r |
428 | return d;\r |
429 | }\r |
430 | #endif\r |
431 | \r |
432 | // -----------------------------------------------------------------\r |
433 | // Write Ram\r |
434 | \r |
3ec29f01 |
435 | #if !defined(_ASM_MEMORY_C) || defined(_ASM_MEMORY_C_AMIPS)\r |
8ab3e3c1 |
436 | PICO_INTERNAL_ASM void PicoWrite8(u32 a,u8 d)\r |
cc68a136 |
437 | {\r |
ca61ee42 |
438 | elprintf(EL_IO, "w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
03e4f2a3 |
439 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
440 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
441 | #endif\r |
cc68a136 |
442 | \r |
d9153729 |
443 | if ((a&0xe00000)==0xe00000) { *(u8 *)(Pico.ram+((a^1)&0xffff))=d; return; } // Ram\r |
4f65685b |
444 | log_io(a, 8, 1);\r |
cc68a136 |
445 | \r |
446 | a&=0xffffff;\r |
fb9bec94 |
447 | OtherWrite8(a,d);\r |
cc68a136 |
448 | }\r |
e5503e2f |
449 | #endif\r |
cc68a136 |
450 | \r |
8ab3e3c1 |
451 | void PicoWrite16(u32 a,u16 d)\r |
cc68a136 |
452 | {\r |
ca61ee42 |
453 | elprintf(EL_IO, "w16: %06x, %04x", a&0xffffff, d);\r |
03e4f2a3 |
454 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
455 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
456 | #endif\r |
cc68a136 |
457 | \r |
458 | if ((a&0xe00000)==0xe00000) { *(u16 *)(Pico.ram+(a&0xfffe))=d; return; } // Ram\r |
4f65685b |
459 | log_io(a, 16, 1);\r |
cc68a136 |
460 | \r |
461 | a&=0xfffffe;\r |
b542be46 |
462 | if ((a&0xe700e0)==0xc00000) { PicoVideoWrite(a,(u16)d); return; } // VDP\r |
cc68a136 |
463 | OtherWrite16(a,d);\r |
464 | }\r |
465 | \r |
8ab3e3c1 |
466 | static void PicoWrite32(u32 a,u32 d)\r |
cc68a136 |
467 | {\r |
ca61ee42 |
468 | elprintf(EL_IO, "w32: %06x, %08x", a&0xffffff, d);\r |
03e4f2a3 |
469 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
470 | lastwrite_cyc_d[lwp_cyc++&15] = d;\r |
471 | #endif\r |
472 | \r |
473 | if ((a&0xe00000)==0xe00000)\r |
474 | {\r |
475 | // Ram:\r |
476 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
477 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
478 | return;\r |
479 | }\r |
4f65685b |
480 | log_io(a, 32, 1);\r |
cc68a136 |
481 | \r |
482 | a&=0xfffffe;\r |
b542be46 |
483 | if ((a&0xe700e0)==0xc00000)\r |
484 | {\r |
485 | // VDP:\r |
486 | PicoVideoWrite(a, (u16)(d>>16));\r |
487 | PicoVideoWrite(a+2,(u16)d);\r |
488 | return;\r |
489 | }\r |
490 | \r |
cc68a136 |
491 | OtherWrite16(a, (u16)(d>>16));\r |
492 | OtherWrite16(a+2,(u16)d);\r |
493 | }\r |
494 | \r |
495 | \r |
496 | // -----------------------------------------------------------------\r |
f53f286a |
497 | \r |
f8ef8ff7 |
498 | static void OtherWrite16End(u32 a,u32 d,int realsize)\r |
499 | {\r |
500 | PicoWrite8Hook(a, d>>8, realsize);\r |
501 | PicoWrite8Hook(a+1,d&0xff, realsize);\r |
502 | }\r |
f53f286a |
503 | \r |
f8ef8ff7 |
504 | u32 (*PicoRead16Hook) (u32 a, int realsize) = OtherRead16End;\r |
505 | void (*PicoWrite8Hook) (u32 a, u32 d, int realsize) = OtherWrite8End;\r |
506 | void (*PicoWrite16Hook)(u32 a, u32 d, int realsize) = OtherWrite16End;\r |
507 | \r |
508 | PICO_INTERNAL void PicoMemResetHooks(void)\r |
cc68a136 |
509 | {\r |
f53f286a |
510 | // default unmapped/cart specific handlers\r |
511 | PicoRead16Hook = OtherRead16End;\r |
512 | PicoWrite8Hook = OtherWrite8End;\r |
f8ef8ff7 |
513 | PicoWrite16Hook = OtherWrite16End;\r |
514 | }\r |
f53f286a |
515 | \r |
9037e45d |
516 | #ifdef EMU_M68K\r |
517 | static void m68k_mem_setup(void);\r |
518 | #endif\r |
519 | \r |
f8ef8ff7 |
520 | PICO_INTERNAL void PicoMemSetup(void)\r |
521 | {\r |
cc68a136 |
522 | // Setup memory callbacks:\r |
70357ce5 |
523 | #ifdef EMU_C68K\r |
3aa1e148 |
524 | PicoCpuCM68k.checkpc=PicoCheckPc;\r |
525 | PicoCpuCM68k.fetch8 =PicoCpuCM68k.read8 =PicoRead8;\r |
526 | PicoCpuCM68k.fetch16=PicoCpuCM68k.read16=PicoRead16;\r |
527 | PicoCpuCM68k.fetch32=PicoCpuCM68k.read32=PicoRead32;\r |
528 | PicoCpuCM68k.write8 =PicoWrite8;\r |
529 | PicoCpuCM68k.write16=PicoWrite16;\r |
530 | PicoCpuCM68k.write32=PicoWrite32;\r |
cc68a136 |
531 | #endif\r |
70357ce5 |
532 | #ifdef EMU_F68K\r |
3aa1e148 |
533 | PicoCpuFM68k.read_byte =PicoRead8;\r |
534 | PicoCpuFM68k.read_word =PicoRead16;\r |
535 | PicoCpuFM68k.read_long =PicoRead32;\r |
536 | PicoCpuFM68k.write_byte=PicoWrite8;\r |
537 | PicoCpuFM68k.write_word=PicoWrite16;\r |
538 | PicoCpuFM68k.write_long=PicoWrite32;\r |
539 | \r |
540 | // setup FAME fetchmap\r |
541 | {\r |
542 | int i;\r |
9037e45d |
543 | // by default, point everything to first 64k of ROM\r |
3aa1e148 |
544 | for (i = 0; i < M68K_FETCHBANK1; i++)\r |
545 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom - (i<<(24-FAMEC_FETCHBITS));\r |
546 | // now real ROM\r |
547 | for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < Pico.romsize; i++)\r |
548 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom;\r |
549 | // .. and RAM\r |
550 | for (i = M68K_FETCHBANK1*14/16; i < M68K_FETCHBANK1; i++)\r |
551 | PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.ram - (i<<(24-FAMEC_FETCHBITS));\r |
552 | }\r |
70357ce5 |
553 | #endif\r |
9037e45d |
554 | #ifdef EMU_M68K\r |
555 | m68k_mem_setup();\r |
556 | #endif\r |
cc68a136 |
557 | }\r |
558 | \r |
9037e45d |
559 | /* some nasty things below :( */\r |
cc68a136 |
560 | #ifdef EMU_M68K\r |
9037e45d |
561 | unsigned int (*pm68k_read_memory_8) (unsigned int address) = NULL;\r |
562 | unsigned int (*pm68k_read_memory_16)(unsigned int address) = NULL;\r |
563 | unsigned int (*pm68k_read_memory_32)(unsigned int address) = NULL;\r |
564 | void (*pm68k_write_memory_8) (unsigned int address, unsigned char value) = NULL;\r |
565 | void (*pm68k_write_memory_16)(unsigned int address, unsigned short value) = NULL;\r |
566 | void (*pm68k_write_memory_32)(unsigned int address, unsigned int value) = NULL;\r |
567 | unsigned int (*pm68k_read_memory_pcr_8) (unsigned int address) = NULL;\r |
568 | unsigned int (*pm68k_read_memory_pcr_16)(unsigned int address) = NULL;\r |
569 | unsigned int (*pm68k_read_memory_pcr_32)(unsigned int address) = NULL;\r |
570 | \r |
571 | // these are here for core debugging mode\r |
b5e5172d |
572 | static unsigned int m68k_read_8 (unsigned int a, int do_fake)\r |
573 | {\r |
cc68a136 |
574 | a&=0xffffff;\r |
b5e5172d |
575 | if(a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k) return *(u8 *)(Pico.rom+(a^1)); // Rom\r |
03e4f2a3 |
576 | #ifdef EMU_CORE_DEBUG\r |
2d0b15bb |
577 | if(do_fake&&((ppop&0x3f)==0x3a||(ppop&0x3f)==0x3b)) return lastread_d[lrp_mus++&15];\r |
2270612a |
578 | #endif\r |
9037e45d |
579 | return pm68k_read_memory_pcr_8(a);\r |
cc68a136 |
580 | }\r |
b5e5172d |
581 | static unsigned int m68k_read_16(unsigned int a, int do_fake)\r |
582 | {\r |
cc68a136 |
583 | a&=0xffffff;\r |
b5e5172d |
584 | if(a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k) return *(u16 *)(Pico.rom+(a&~1)); // Rom\r |
03e4f2a3 |
585 | #ifdef EMU_CORE_DEBUG\r |
2d0b15bb |
586 | if(do_fake&&((ppop&0x3f)==0x3a||(ppop&0x3f)==0x3b)) return lastread_d[lrp_mus++&15];\r |
2270612a |
587 | #endif\r |
9037e45d |
588 | return pm68k_read_memory_pcr_16(a);\r |
cc68a136 |
589 | }\r |
b5e5172d |
590 | static unsigned int m68k_read_32(unsigned int a, int do_fake)\r |
591 | {\r |
cc68a136 |
592 | a&=0xffffff;\r |
b5e5172d |
593 | if(a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
03e4f2a3 |
594 | #ifdef EMU_CORE_DEBUG\r |
2d0b15bb |
595 | if(do_fake&&((ppop&0x3f)==0x3a||(ppop&0x3f)==0x3b)) return lastread_d[lrp_mus++&15];\r |
2270612a |
596 | #endif\r |
9037e45d |
597 | return pm68k_read_memory_pcr_32(a);\r |
cc68a136 |
598 | }\r |
599 | \r |
2d0b15bb |
600 | unsigned int m68k_read_pcrelative_8 (unsigned int a) { return m68k_read_8 (a, 1); }\r |
601 | unsigned int m68k_read_pcrelative_16(unsigned int a) { return m68k_read_16(a, 1); }\r |
602 | unsigned int m68k_read_pcrelative_32(unsigned int a) { return m68k_read_32(a, 1); }\r |
603 | unsigned int m68k_read_immediate_16(unsigned int a) { return m68k_read_16(a, 0); }\r |
604 | unsigned int m68k_read_immediate_32(unsigned int a) { return m68k_read_32(a, 0); }\r |
605 | unsigned int m68k_read_disassembler_8 (unsigned int a) { return m68k_read_8 (a, 0); }\r |
606 | unsigned int m68k_read_disassembler_16(unsigned int a) { return m68k_read_16(a, 0); }\r |
607 | unsigned int m68k_read_disassembler_32(unsigned int a) { return m68k_read_32(a, 0); }\r |
cc68a136 |
608 | \r |
9037e45d |
609 | static unsigned int m68k_read_memory_pcr_8(unsigned int a)\r |
610 | {\r |
611 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
612 | return 0;\r |
613 | }\r |
614 | \r |
615 | static unsigned int m68k_read_memory_pcr_16(unsigned int a)\r |
616 | {\r |
617 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
618 | return 0;\r |
619 | }\r |
620 | \r |
621 | static unsigned int m68k_read_memory_pcr_32(unsigned int a)\r |
622 | {\r |
623 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
624 | return 0;\r |
625 | }\r |
626 | \r |
03e4f2a3 |
627 | #ifdef EMU_CORE_DEBUG\r |
cc68a136 |
628 | // ROM only\r |
2d0b15bb |
629 | unsigned int m68k_read_memory_8(unsigned int a)\r |
630 | {\r |
631 | u8 d;\r |
b5e5172d |
632 | if (a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k)\r |
633 | d = *(u8 *) (Pico.rom+(a^1));\r |
2d0b15bb |
634 | else d = (u8) lastread_d[lrp_mus++&15];\r |
ca61ee42 |
635 | elprintf(EL_IO, "r8_mu : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
2d0b15bb |
636 | return d;\r |
637 | }\r |
638 | unsigned int m68k_read_memory_16(unsigned int a)\r |
639 | {\r |
640 | u16 d;\r |
b5e5172d |
641 | if (a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k)\r |
642 | d = *(u16 *)(Pico.rom+(a&~1));\r |
2d0b15bb |
643 | else d = (u16) lastread_d[lrp_mus++&15];\r |
ca61ee42 |
644 | elprintf(EL_IO, "r16_mu: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
2d0b15bb |
645 | return d;\r |
646 | }\r |
647 | unsigned int m68k_read_memory_32(unsigned int a)\r |
648 | {\r |
649 | u32 d;\r |
b5e5172d |
650 | if (a<Pico.romsize && m68ki_cpu_p==&PicoCpuMM68k)\r |
651 | { u16 *pm=(u16 *)(Pico.rom+(a&~1));d=(pm[0]<<16)|pm[1]; }\r |
652 | else if (a <= 0x78) d = m68k_read_32(a, 0);\r |
2d0b15bb |
653 | else d = lastread_d[lrp_mus++&15];\r |
ca61ee42 |
654 | elprintf(EL_IO, "r32_mu: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
2d0b15bb |
655 | return d;\r |
656 | }\r |
cc68a136 |
657 | \r |
658 | // ignore writes, Cyclone already done that\r |
659 | void m68k_write_memory_8(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }\r |
660 | void m68k_write_memory_16(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }\r |
661 | void m68k_write_memory_32(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }\r |
cc68a136 |
662 | \r |
9037e45d |
663 | #else // if !EMU_CORE_DEBUG\r |
cc68a136 |
664 | \r |
9037e45d |
665 | /* it appears that Musashi doesn't always mask the unused bits */\r |
666 | unsigned int m68k_read_memory_8 (unsigned int address) { return pm68k_read_memory_8 (address) & 0xff; }\r |
667 | unsigned int m68k_read_memory_16(unsigned int address) { return pm68k_read_memory_16(address) & 0xffff; }\r |
668 | unsigned int m68k_read_memory_32(unsigned int address) { return pm68k_read_memory_32(address); }\r |
669 | void m68k_write_memory_8 (unsigned int address, unsigned int value) { pm68k_write_memory_8 (address, (u8)value); }\r |
670 | void m68k_write_memory_16(unsigned int address, unsigned int value) { pm68k_write_memory_16(address,(u16)value); }\r |
671 | void m68k_write_memory_32(unsigned int address, unsigned int value) { pm68k_write_memory_32(address, value); }\r |
672 | #endif // !EMU_CORE_DEBUG\r |
673 | \r |
674 | static void m68k_mem_setup(void)\r |
675 | {\r |
676 | pm68k_read_memory_8 = PicoRead8;\r |
677 | pm68k_read_memory_16 = PicoRead16;\r |
678 | pm68k_read_memory_32 = PicoRead32;\r |
679 | pm68k_write_memory_8 = PicoWrite8;\r |
680 | pm68k_write_memory_16 = PicoWrite16;\r |
681 | pm68k_write_memory_32 = PicoWrite32;\r |
682 | pm68k_read_memory_pcr_8 = m68k_read_memory_pcr_8;\r |
683 | pm68k_read_memory_pcr_16 = m68k_read_memory_pcr_16;\r |
684 | pm68k_read_memory_pcr_32 = m68k_read_memory_pcr_32;\r |
cc68a136 |
685 | }\r |
cc68a136 |
686 | #endif // EMU_M68K\r |
687 | \r |
688 | \r |
4b9c5888 |
689 | // -----------------------------------------------------------------\r |
690 | \r |
4b9c5888 |
691 | static int get_scanline(int is_from_z80)\r |
692 | {\r |
693 | if (is_from_z80) {\r |
694 | int cycles = z80_cyclesDone();\r |
695 | while (cycles - z80_scanline_cycles >= 228)\r |
696 | z80_scanline++, z80_scanline_cycles += 228;\r |
697 | return z80_scanline;\r |
698 | }\r |
699 | \r |
2aa27095 |
700 | return Pico.m.scanline;\r |
4b9c5888 |
701 | }\r |
702 | \r |
48dc74f2 |
703 | /* probably should not be in this file, but it's near related code here */\r |
43e6eaad |
704 | void ym2612_sync_timers(int z80_cycles, int mode_old, int mode_new)\r |
705 | {\r |
706 | int xcycles = z80_cycles << 8;\r |
707 | \r |
708 | /* check for overflows */\r |
709 | if ((mode_old & 4) && xcycles > timer_a_next_oflow)\r |
710 | ym2612.OPN.ST.status |= 1;\r |
711 | \r |
712 | if ((mode_old & 8) && xcycles > timer_b_next_oflow)\r |
713 | ym2612.OPN.ST.status |= 2;\r |
714 | \r |
715 | /* update timer a */\r |
716 | if (mode_old & 1)\r |
e53704e6 |
717 | while (xcycles > timer_a_next_oflow)\r |
43e6eaad |
718 | timer_a_next_oflow += timer_a_step;\r |
719 | \r |
720 | if ((mode_old ^ mode_new) & 1) // turning on/off\r |
721 | {\r |
48dc74f2 |
722 | if (mode_old & 1)\r |
e53704e6 |
723 | timer_a_next_oflow = TIMER_NO_OFLOW;\r |
43e6eaad |
724 | else\r |
48dc74f2 |
725 | timer_a_next_oflow = xcycles + timer_a_step;\r |
43e6eaad |
726 | }\r |
727 | if (mode_new & 1)\r |
728 | elprintf(EL_YMTIMER, "timer a upd to %i @ %i", timer_a_next_oflow>>8, z80_cycles);\r |
729 | \r |
730 | /* update timer b */\r |
731 | if (mode_old & 2)\r |
e53704e6 |
732 | while (xcycles > timer_b_next_oflow)\r |
43e6eaad |
733 | timer_b_next_oflow += timer_b_step;\r |
734 | \r |
735 | if ((mode_old ^ mode_new) & 2)\r |
736 | {\r |
48dc74f2 |
737 | if (mode_old & 2)\r |
e53704e6 |
738 | timer_b_next_oflow = TIMER_NO_OFLOW;\r |
43e6eaad |
739 | else\r |
48dc74f2 |
740 | timer_b_next_oflow = xcycles + timer_b_step;\r |
43e6eaad |
741 | }\r |
742 | if (mode_new & 2)\r |
743 | elprintf(EL_YMTIMER, "timer b upd to %i @ %i", timer_b_next_oflow>>8, z80_cycles);\r |
744 | }\r |
745 | \r |
4b9c5888 |
746 | // ym2612 DAC and timer I/O handlers for z80\r |
747 | int ym2612_write_local(u32 a, u32 d, int is_from_z80)\r |
748 | {\r |
749 | int addr;\r |
750 | \r |
751 | a &= 3;\r |
752 | if (a == 1 && ym2612.OPN.ST.address == 0x2a) /* DAC data */\r |
753 | {\r |
754 | int scanline = get_scanline(is_from_z80);\r |
755 | //elprintf(EL_STATUS, "%03i -> %03i dac w %08x z80 %i", PsndDacLine, scanline, d, is_from_z80);\r |
756 | ym2612.dacout = ((int)d - 0x80) << 6;\r |
757 | if (PsndOut && ym2612.dacen && scanline >= PsndDacLine)\r |
758 | PsndDoDAC(scanline);\r |
759 | return 0;\r |
760 | }\r |
761 | \r |
762 | switch (a)\r |
763 | {\r |
764 | case 0: /* address port 0 */\r |
765 | ym2612.OPN.ST.address = d;\r |
766 | ym2612.addr_A1 = 0;\r |
767 | #ifdef __GP2X__\r |
768 | if (PicoOpt & POPT_EXT_FM) YM2612Write_940(a, d, -1);\r |
769 | #endif\r |
770 | return 0;\r |
771 | \r |
772 | case 1: /* data port 0 */\r |
773 | if (ym2612.addr_A1 != 0)\r |
774 | return 0;\r |
775 | \r |
776 | addr = ym2612.OPN.ST.address;\r |
777 | ym2612.REGS[addr] = d;\r |
778 | \r |
779 | switch (addr)\r |
780 | {\r |
781 | case 0x24: // timer A High 8\r |
782 | case 0x25: { // timer A Low 2\r |
783 | int TAnew = (addr == 0x24) ? ((ym2612.OPN.ST.TA & 0x03)|(((int)d)<<2))\r |
784 | : ((ym2612.OPN.ST.TA & 0x3fc)|(d&3));\r |
785 | if (ym2612.OPN.ST.TA != TAnew)\r |
786 | {\r |
787 | //elprintf(EL_STATUS, "timer a set %i", TAnew);\r |
788 | ym2612.OPN.ST.TA = TAnew;\r |
e53704e6 |
789 | //ym2612.OPN.ST.TAC = (1024-TAnew)*18;\r |
4b9c5888 |
790 | //ym2612.OPN.ST.TAT = 0;\r |
48dc74f2 |
791 | timer_a_step = TIMER_A_TICK_ZCYCLES * (1024 - TAnew);\r |
43e6eaad |
792 | if (ym2612.OPN.ST.mode & 1) {\r |
48dc74f2 |
793 | // this is not right, should really be done on overflow only\r |
4b9c5888 |
794 | int cycles = is_from_z80 ? z80_cyclesDone() : cycles_68k_to_z80(SekCyclesDone());\r |
795 | timer_a_next_oflow = (cycles << 8) + timer_a_step;\r |
4b9c5888 |
796 | }\r |
43e6eaad |
797 | elprintf(EL_YMTIMER, "timer a set to %i, %i", 1024 - TAnew, timer_a_next_oflow>>8);\r |
4b9c5888 |
798 | }\r |
799 | return 0;\r |
800 | }\r |
801 | case 0x26: // timer B\r |
802 | if (ym2612.OPN.ST.TB != d) {\r |
803 | //elprintf(EL_STATUS, "timer b set %i", d);\r |
804 | ym2612.OPN.ST.TB = d;\r |
e53704e6 |
805 | //ym2612.OPN.ST.TBC = (256-d) * 288;\r |
4b9c5888 |
806 | //ym2612.OPN.ST.TBT = 0;\r |
48dc74f2 |
807 | timer_b_step = TIMER_B_TICK_ZCYCLES * (256 - d); // 262800\r |
43e6eaad |
808 | if (ym2612.OPN.ST.mode & 2) {\r |
809 | int cycles = is_from_z80 ? z80_cyclesDone() : cycles_68k_to_z80(SekCyclesDone());\r |
810 | timer_b_next_oflow = (cycles << 8) + timer_b_step;\r |
811 | }\r |
812 | elprintf(EL_YMTIMER, "timer b set to %i, %i", 256 - d, timer_b_next_oflow>>8);\r |
4b9c5888 |
813 | }\r |
814 | return 0;\r |
815 | case 0x27: { /* mode, timer control */\r |
816 | int old_mode = ym2612.OPN.ST.mode;\r |
43e6eaad |
817 | int cycles = is_from_z80 ? z80_cyclesDone() : cycles_68k_to_z80(SekCyclesDone());\r |
818 | ym2612.OPN.ST.mode = d;\r |
4b9c5888 |
819 | \r |
43e6eaad |
820 | elprintf(EL_YMTIMER, "st mode %02x", d);\r |
821 | ym2612_sync_timers(cycles, old_mode, d);\r |
4b9c5888 |
822 | \r |
43e6eaad |
823 | /* reset Timer a flag */\r |
824 | if (d & 0x10)\r |
825 | ym2612.OPN.ST.status &= ~1;\r |
4b9c5888 |
826 | \r |
827 | /* reset Timer b flag */\r |
828 | if (d & 0x20)\r |
829 | ym2612.OPN.ST.status &= ~2;\r |
830 | \r |
43e6eaad |
831 | if ((d ^ old_mode) & 0xc0) {\r |
4b9c5888 |
832 | #ifdef __GP2X__\r |
52250671 |
833 | if (PicoOpt & POPT_EXT_FM) return YM2612Write_940(a, d, get_scanline(is_from_z80));\r |
4b9c5888 |
834 | #endif\r |
43e6eaad |
835 | return 1;\r |
836 | }\r |
4b9c5888 |
837 | return 0;\r |
838 | }\r |
839 | case 0x2b: { /* DAC Sel (YM2612) */\r |
840 | int scanline = get_scanline(is_from_z80);\r |
841 | ym2612.dacen = d & 0x80;\r |
842 | if (d & 0x80) PsndDacLine = scanline;\r |
843 | #ifdef __GP2X__\r |
844 | if (PicoOpt & POPT_EXT_FM) YM2612Write_940(a, d, scanline);\r |
845 | #endif\r |
846 | return 0;\r |
847 | }\r |
848 | }\r |
849 | break;\r |
850 | \r |
851 | case 2: /* address port 1 */\r |
852 | ym2612.OPN.ST.address = d;\r |
853 | ym2612.addr_A1 = 1;\r |
854 | #ifdef __GP2X__\r |
855 | if (PicoOpt & POPT_EXT_FM) YM2612Write_940(a, d, -1);\r |
856 | #endif\r |
857 | return 0;\r |
858 | \r |
859 | case 3: /* data port 1 */\r |
860 | if (ym2612.addr_A1 != 1)\r |
861 | return 0;\r |
862 | \r |
863 | addr = ym2612.OPN.ST.address | 0x100;\r |
864 | ym2612.REGS[addr] = d;\r |
865 | break;\r |
866 | }\r |
867 | \r |
868 | #ifdef __GP2X__\r |
869 | if (PicoOpt & POPT_EXT_FM)\r |
870 | return YM2612Write_940(a, d, get_scanline(is_from_z80));\r |
871 | #endif\r |
872 | return YM2612Write_(a, d);\r |
873 | }\r |
874 | \r |
453d2a6e |
875 | \r |
43e6eaad |
876 | #define ym2612_read_local() \\r |
877 | if (xcycles >= timer_a_next_oflow) \\r |
878 | ym2612.OPN.ST.status |= (ym2612.OPN.ST.mode >> 2) & 1; \\r |
879 | if (xcycles >= timer_b_next_oflow) \\r |
880 | ym2612.OPN.ST.status |= (ym2612.OPN.ST.mode >> 2) & 2\r |
881 | \r |
4b9c5888 |
882 | u32 ym2612_read_local_z80(void)\r |
883 | {\r |
884 | int xcycles = z80_cyclesDone() << 8;\r |
4b9c5888 |
885 | \r |
43e6eaad |
886 | ym2612_read_local();\r |
887 | \r |
888 | elprintf(EL_YMTIMER, "timer z80 read %i, sched %i, %i @ %i|%i", ym2612.OPN.ST.status,\r |
889 | timer_a_next_oflow>>8, timer_b_next_oflow>>8, xcycles >> 8, (xcycles >> 8) / 228);\r |
890 | return ym2612.OPN.ST.status;\r |
891 | }\r |
892 | \r |
893 | u32 ym2612_read_local_68k(void)\r |
894 | {\r |
895 | int xcycles = cycles_68k_to_z80(SekCyclesDone()) << 8;\r |
896 | \r |
897 | ym2612_read_local();\r |
898 | \r |
899 | elprintf(EL_YMTIMER, "timer 68k read %i, sched %i, %i @ %i|%i", ym2612.OPN.ST.status,\r |
900 | timer_a_next_oflow>>8, timer_b_next_oflow>>8, xcycles >> 8, (xcycles >> 8) / 228);\r |
4b9c5888 |
901 | return ym2612.OPN.ST.status;\r |
902 | }\r |
903 | \r |
d2721b08 |
904 | void ym2612_pack_state(void)\r |
905 | {\r |
e53704e6 |
906 | // timers are saved as tick counts, in 16.16 int format\r |
907 | int tac, tat = 0, tbc, tbt = 0;\r |
908 | tac = 1024 - ym2612.OPN.ST.TA;\r |
909 | tbc = 256 - ym2612.OPN.ST.TB;\r |
910 | if (timer_a_next_oflow != TIMER_NO_OFLOW)\r |
911 | tat = (int)((double)(timer_a_step - timer_a_next_oflow) / (double)timer_a_step * tac * 65536);\r |
912 | if (timer_b_next_oflow != TIMER_NO_OFLOW)\r |
913 | tbt = (int)((double)(timer_b_step - timer_b_next_oflow) / (double)timer_b_step * tbc * 65536);\r |
914 | elprintf(EL_YMTIMER, "save: timer a %i/%i", tat >> 16, tac);\r |
915 | elprintf(EL_YMTIMER, "save: timer b %i/%i", tbt >> 16, tbc);\r |
916 | \r |
d2721b08 |
917 | #ifdef __GP2X__\r |
918 | if (PicoOpt & POPT_EXT_FM)\r |
e4fb433c |
919 | YM2612PicoStateSave2_940(tat, tbt);\r |
d2721b08 |
920 | else\r |
921 | #endif\r |
e53704e6 |
922 | YM2612PicoStateSave2(tat, tbt);\r |
d2721b08 |
923 | }\r |
924 | \r |
453d2a6e |
925 | void ym2612_unpack_state(void)\r |
926 | {\r |
e53704e6 |
927 | int i, ret, tac, tat, tbc, tbt;\r |
453d2a6e |
928 | YM2612PicoStateLoad();\r |
929 | \r |
930 | // feed all the registers and update internal state\r |
db49317b |
931 | for (i = 0x20; i < 0xA0; i++) {\r |
453d2a6e |
932 | ym2612_write_local(0, i, 0);\r |
933 | ym2612_write_local(1, ym2612.REGS[i], 0);\r |
934 | }\r |
db49317b |
935 | for (i = 0x30; i < 0xA0; i++) {\r |
936 | ym2612_write_local(2, i, 0);\r |
937 | ym2612_write_local(3, ym2612.REGS[i|0x100], 0);\r |
938 | }\r |
939 | for (i = 0xAF; i >= 0xA0; i--) { // must apply backwards\r |
940 | ym2612_write_local(2, i, 0);\r |
941 | ym2612_write_local(3, ym2612.REGS[i|0x100], 0);\r |
942 | ym2612_write_local(0, i, 0);\r |
943 | ym2612_write_local(1, ym2612.REGS[i], 0);\r |
944 | }\r |
945 | for (i = 0xB0; i < 0xB8; i++) {\r |
946 | ym2612_write_local(0, i, 0);\r |
947 | ym2612_write_local(1, ym2612.REGS[i], 0);\r |
453d2a6e |
948 | ym2612_write_local(2, i, 0);\r |
949 | ym2612_write_local(3, ym2612.REGS[i|0x100], 0);\r |
950 | }\r |
d2721b08 |
951 | \r |
952 | #ifdef __GP2X__\r |
953 | if (PicoOpt & POPT_EXT_FM)\r |
e4fb433c |
954 | ret = YM2612PicoStateLoad2_940(&tat, &tbt);\r |
d2721b08 |
955 | else\r |
956 | #endif\r |
957 | ret = YM2612PicoStateLoad2(&tat, &tbt);\r |
db49317b |
958 | if (ret != 0) {\r |
959 | elprintf(EL_STATUS, "old ym2612 state");\r |
960 | return; // no saved timers\r |
961 | }\r |
e53704e6 |
962 | \r |
963 | tac = (1024 - ym2612.OPN.ST.TA) << 16;\r |
964 | tbc = (256 - ym2612.OPN.ST.TB) << 16;\r |
965 | if (ym2612.OPN.ST.mode & 1)\r |
48dc74f2 |
966 | timer_a_next_oflow = (int)((double)(tac - tat) / (double)tac * timer_a_step);\r |
e53704e6 |
967 | else\r |
968 | timer_a_next_oflow = TIMER_NO_OFLOW;\r |
969 | if (ym2612.OPN.ST.mode & 2)\r |
48dc74f2 |
970 | timer_b_next_oflow = (int)((double)(tbc - tbt) / (double)tbc * timer_b_step);\r |
e53704e6 |
971 | else\r |
972 | timer_b_next_oflow = TIMER_NO_OFLOW;\r |
973 | elprintf(EL_YMTIMER, "load: %i/%i, timer_a_next_oflow %i", tat>>16, tac>>16, timer_a_next_oflow >> 8);\r |
974 | elprintf(EL_YMTIMER, "load: %i/%i, timer_b_next_oflow %i", tbt>>16, tbc>>16, timer_b_next_oflow >> 8);\r |
453d2a6e |
975 | }\r |
976 | \r |
cc68a136 |
977 | // -----------------------------------------------------------------\r |
978 | // z80 memhandlers\r |
979 | \r |
eff55556 |
980 | PICO_INTERNAL unsigned char z80_read(unsigned short a)\r |
cc68a136 |
981 | {\r |
982 | u8 ret = 0;\r |
983 | \r |
984 | if ((a>>13)==2) // 0x4000-0x5fff (Charles MacDonald)\r |
985 | {\r |
c060a9ab |
986 | return ym2612_read_local_z80();\r |
cc68a136 |
987 | }\r |
988 | \r |
989 | if (a>=0x8000)\r |
990 | {\r |
81fda4e8 |
991 | extern u32 PicoReadM68k8(u32 a);\r |
cc68a136 |
992 | u32 addr68k;\r |
993 | addr68k=Pico.m.z80_bank68k<<15;\r |
994 | addr68k+=a&0x7fff;\r |
995 | \r |
43e6eaad |
996 | if (addr68k < Pico.romsize) { ret = Pico.rom[addr68k^1]; goto bnkend; }\r |
997 | elprintf(EL_ANOMALY, "z80->68k upper read [%06x] %02x", addr68k, ret);\r |
602133e1 |
998 | if (PicoAHW & PAHW_MCD)\r |
81fda4e8 |
999 | ret = PicoReadM68k8(addr68k);\r |
1000 | else ret = PicoRead8(addr68k);\r |
43e6eaad |
1001 | bnkend:\r |
1002 | elprintf(EL_Z80BNK, "z80->68k r8 [%06x] %02x", addr68k, ret);\r |
03e4f2a3 |
1003 | return ret;\r |
cc68a136 |
1004 | }\r |
1005 | \r |
b542be46 |
1006 | // should not be needed, cores should be able to access RAM themselves\r |
03e4f2a3 |
1007 | if (a<0x4000) return Pico.zram[a&0x1fff];\r |
cc68a136 |
1008 | \r |
69996cb7 |
1009 | elprintf(EL_ANOMALY, "z80 invalid r8 [%06x] %02x", a, ret);\r |
cc68a136 |
1010 | return ret;\r |
1011 | }\r |
1012 | \r |
a4221917 |
1013 | #ifndef _USE_CZ80\r |
eff55556 |
1014 | PICO_INTERNAL_ASM void z80_write(unsigned char data, unsigned short a)\r |
a4221917 |
1015 | #else\r |
1016 | PICO_INTERNAL_ASM void z80_write(unsigned int a, unsigned char data)\r |
1017 | #endif\r |
cc68a136 |
1018 | {\r |
cc68a136 |
1019 | if ((a>>13)==2) // 0x4000-0x5fff (Charles MacDonald)\r |
1020 | {\r |
4b9c5888 |
1021 | if(PicoOpt&POPT_EN_FM) emustatus|=ym2612_write_local(a, data, 1) & 1;\r |
cc68a136 |
1022 | return;\r |
1023 | }\r |
1024 | \r |
1025 | if ((a&0xfff9)==0x7f11) // 7f11 7f13 7f15 7f17\r |
1026 | {\r |
602133e1 |
1027 | if(PicoOpt&POPT_EN_PSG) SN76496Write(data);\r |
cc68a136 |
1028 | return;\r |
1029 | }\r |
1030 | \r |
1031 | if ((a>>8)==0x60)\r |
1032 | {\r |
1033 | Pico.m.z80_bank68k>>=1;\r |
1034 | Pico.m.z80_bank68k|=(data&1)<<8;\r |
1035 | Pico.m.z80_bank68k&=0x1ff; // 9 bits and filled in the new top one\r |
1036 | return;\r |
1037 | }\r |
1038 | \r |
1039 | if (a>=0x8000)\r |
1040 | {\r |
81fda4e8 |
1041 | extern void PicoWriteM68k8(u32 a,u8 d);\r |
cc68a136 |
1042 | u32 addr68k;\r |
1043 | addr68k=Pico.m.z80_bank68k<<15;\r |
1044 | addr68k+=a&0x7fff;\r |
69996cb7 |
1045 | elprintf(EL_Z80BNK, "z80->68k w8 [%06x] %02x", addr68k, data);\r |
602133e1 |
1046 | if (PicoAHW & PAHW_MCD)\r |
81fda4e8 |
1047 | PicoWriteM68k8(addr68k, data);\r |
1048 | else PicoWrite8(addr68k, data);\r |
cc68a136 |
1049 | return;\r |
1050 | }\r |
1051 | \r |
b542be46 |
1052 | // should not be needed\r |
cc68a136 |
1053 | if (a<0x4000) { Pico.zram[a&0x1fff]=data; return; }\r |
69996cb7 |
1054 | \r |
1055 | elprintf(EL_ANOMALY, "z80 invalid w8 [%06x] %02x", a, data);\r |
cc68a136 |
1056 | }\r |
1057 | \r |
a4221917 |
1058 | #ifndef _USE_CZ80\r |
1059 | PICO_INTERNAL unsigned short z80_read16(unsigned short a)\r |
1060 | {\r |
a4221917 |
1061 | return (u16) ( (u16)z80_read(a) | ((u16)z80_read((u16)(a+1))<<8) );\r |
1062 | }\r |
1063 | \r |
eff55556 |
1064 | PICO_INTERNAL void z80_write16(unsigned short data, unsigned short a)\r |
cc68a136 |
1065 | {\r |
cc68a136 |
1066 | z80_write((unsigned char) data,a);\r |
1067 | z80_write((unsigned char)(data>>8),(u16)(a+1));\r |
1068 | }\r |
a4221917 |
1069 | #endif\r |
cc68a136 |
1070 | \r |