| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Xodnizel |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include "mapinc.h" |
| 22 | |
| 23 | static uint16 IRQCount; |
| 24 | static uint8 IRQa; |
| 25 | |
| 26 | static uint8 WRAM[8192]; |
| 27 | static uint8 IRAM[128]; |
| 28 | |
| 29 | static DECLFR(AWRAM) |
| 30 | { |
| 31 | return(WRAM[A-0x6000]); |
| 32 | } |
| 33 | |
| 34 | static DECLFW(BWRAM) |
| 35 | { |
| 36 | WRAM[A-0x6000]=V; |
| 37 | } |
| 38 | |
| 39 | void Mapper19_ESI(void); |
| 40 | |
| 41 | static uint8 NTAPage[4]; |
| 42 | |
| 43 | static uint8 dopol; |
| 44 | static uint8 gorfus; |
| 45 | static uint8 gorko; |
| 46 | |
| 47 | static void NamcoSound(int Count); |
| 48 | static void NamcoSoundHack(void); |
| 49 | static void DoNamcoSound(int32 *Wave, int Count); |
| 50 | //static void DoNamcoSoundHQ(void); |
| 51 | static void SyncHQ(int32 ts); |
| 52 | |
| 53 | static int is210; /* Lesser mapper. */ |
| 54 | |
| 55 | static uint8 PRG[3]; |
| 56 | static uint8 CHR[8]; |
| 57 | |
| 58 | static SFORMAT N106_StateRegs[]={ |
| 59 | {PRG,3,"PRG"}, |
| 60 | {CHR,8,"CHR"}, |
| 61 | {NTAPage,4,"NTA"}, |
| 62 | {0} |
| 63 | }; |
| 64 | |
| 65 | static void SyncPRG(void) |
| 66 | { |
| 67 | setprg8(0x8000,PRG[0]); |
| 68 | setprg8(0xa000,PRG[1]); |
| 69 | setprg8(0xc000,PRG[2]); |
| 70 | setprg8(0xe000,0x3F); |
| 71 | } |
| 72 | |
| 73 | static void FP_FASTAPASS(1) NamcoIRQHook(int a) |
| 74 | { |
| 75 | if(IRQa) |
| 76 | { |
| 77 | IRQCount+=a; |
| 78 | if(IRQCount>=0x7FFF) |
| 79 | { |
| 80 | X6502_IRQBegin(FCEU_IQEXT); |
| 81 | IRQa=0; |
| 82 | IRQCount=0x7FFF; //7FFF; |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | static DECLFR(Namco_Read4800) |
| 88 | { |
| 89 | uint8 ret=IRAM[dopol&0x7f]; |
| 90 | /* Maybe I should call NamcoSoundHack() here? */ |
| 91 | if(!fceuindbg) |
| 92 | if(dopol&0x80) |
| 93 | dopol=(dopol&0x80)|((dopol+1)&0x7f); |
| 94 | return ret; |
| 95 | } |
| 96 | |
| 97 | static DECLFR(Namco_Read5000) |
| 98 | { |
| 99 | return(IRQCount); |
| 100 | } |
| 101 | |
| 102 | static DECLFR(Namco_Read5800) |
| 103 | { |
| 104 | return(IRQCount>>8); |
| 105 | } |
| 106 | |
| 107 | static void FASTAPASS(2) DoNTARAMROM(int w, uint8 V) |
| 108 | { |
| 109 | NTAPage[w]=V; |
| 110 | if(V>=0xE0) |
| 111 | setntamem(NTARAM+((V&1)<<10), 1, w); |
| 112 | else |
| 113 | { |
| 114 | V&=CHRmask1[0]; |
| 115 | setntamem(CHRptr[0]+(V<<10), 0, w); |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | static void FixNTAR(void) |
| 120 | { |
| 121 | int x; |
| 122 | for(x=0;x<4;x++) |
| 123 | DoNTARAMROM(x,NTAPage[x]); |
| 124 | } |
| 125 | |
| 126 | static void FASTAPASS(2) DoCHRRAMROM(int x, uint8 V) |
| 127 | { |
| 128 | CHR[x]=V; |
| 129 | if(!is210 && !((gorfus>>((x>>2)+6))&1) && (V>=0xE0)) |
| 130 | { |
| 131 | // printf("BLAHAHA: %d, %02x\n",x,V); |
| 132 | //setchr1r(0x10,x<<10,V&7); |
| 133 | } |
| 134 | else |
| 135 | setchr1(x<<10,V); |
| 136 | } |
| 137 | |
| 138 | static void FixCRR(void) |
| 139 | { |
| 140 | int x; |
| 141 | for(x=0;x<8;x++) |
| 142 | DoCHRRAMROM(x,CHR[x]); |
| 143 | } |
| 144 | |
| 145 | static DECLFW(Mapper19C0D8_write) |
| 146 | { |
| 147 | DoNTARAMROM((A-0xC000)>>11,V); |
| 148 | } |
| 149 | |
| 150 | static uint32 FreqCache[8]; |
| 151 | static uint32 EnvCache[8]; |
| 152 | static uint32 LengthCache[8]; |
| 153 | |
| 154 | static void FixCache(int a,int V) |
| 155 | { |
| 156 | int w=(a>>3)&0x7; |
| 157 | switch(a&0x07) |
| 158 | { |
| 159 | case 0x00:FreqCache[w]&=~0x000000FF;FreqCache[w]|=V;break; |
| 160 | case 0x02:FreqCache[w]&=~0x0000FF00;FreqCache[w]|=V<<8;break; |
| 161 | case 0x04:FreqCache[w]&=~0x00030000;FreqCache[w]|=(V&3)<<16; |
| 162 | LengthCache[w]=(8-((V>>2)&7))<<2; |
| 163 | break; |
| 164 | case 0x07:EnvCache[w]=(double)(V&0xF)*576716;break; |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | static DECLFW(Mapper19_write) |
| 169 | { |
| 170 | A&=0xF800; |
| 171 | if(A>=0x8000 && A<=0xb800) |
| 172 | DoCHRRAMROM((A-0x8000)>>11,V); |
| 173 | else switch(A) |
| 174 | { |
| 175 | case 0x4800: |
| 176 | if(dopol&0x40) |
| 177 | { |
| 178 | if(FSettings.SndRate) |
| 179 | { |
| 180 | NamcoSoundHack(); |
| 181 | GameExpSound.Fill=NamcoSound; |
| 182 | GameExpSound.HiFill=0;//DoNamcoSoundHQ; |
| 183 | GameExpSound.HiSync=SyncHQ; |
| 184 | } |
| 185 | FixCache(dopol,V); |
| 186 | } |
| 187 | IRAM[dopol&0x7f]=V; |
| 188 | if(dopol&0x80) |
| 189 | dopol=(dopol&0x80)|((dopol+1)&0x7f); |
| 190 | break; |
| 191 | case 0xf800: |
| 192 | dopol=V;break; |
| 193 | case 0x5000: |
| 194 | IRQCount&=0xFF00;IRQCount|=V;X6502_IRQEnd(FCEU_IQEXT);break; |
| 195 | case 0x5800: |
| 196 | IRQCount&=0x00ff;IRQCount|=(V&0x7F)<<8; |
| 197 | IRQa=V&0x80; |
| 198 | X6502_IRQEnd(FCEU_IQEXT); |
| 199 | break; |
| 200 | case 0xE000: |
| 201 | gorko=V&0xC0; |
| 202 | PRG[0]=V&0x3F; |
| 203 | SyncPRG(); |
| 204 | break; |
| 205 | case 0xE800: |
| 206 | gorfus=V&0xC0; |
| 207 | FixCRR(); |
| 208 | PRG[1]=V&0x3F; |
| 209 | SyncPRG(); |
| 210 | break; |
| 211 | case 0xF000: |
| 212 | PRG[2]=V&0x3F; |
| 213 | SyncPRG(); |
| 214 | break; |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | static int dwave=0; |
| 219 | |
| 220 | static void NamcoSoundHack(void) |
| 221 | { |
| 222 | int32 z,a; |
| 223 | #if 0 |
| 224 | if(FSettings.soundq>=1) |
| 225 | { |
| 226 | DoNamcoSoundHQ(); |
| 227 | return; |
| 228 | } |
| 229 | #endif |
| 230 | z=((SOUNDTS<<16)/soundtsinc)>>4; |
| 231 | a=z-dwave; |
| 232 | if(a) DoNamcoSound(&Wave[dwave], a); |
| 233 | dwave+=a; |
| 234 | } |
| 235 | |
| 236 | static void NamcoSound(int Count) |
| 237 | { |
| 238 | int32 z,a; |
| 239 | z=((SOUNDTS<<16)/soundtsinc)>>4; |
| 240 | a=z-dwave; |
| 241 | if(a) DoNamcoSound(&Wave[dwave], a); |
| 242 | dwave=0; |
| 243 | } |
| 244 | |
| 245 | static uint32 PlayIndex[8]; |
| 246 | static int32 vcount[8]; |
| 247 | static int32 CVBC; |
| 248 | |
| 249 | #define TOINDEX (16+1) |
| 250 | |
| 251 | // 16:15 |
| 252 | static void SyncHQ(int32 ts) |
| 253 | { |
| 254 | CVBC=ts; |
| 255 | } |
| 256 | |
| 257 | |
| 258 | /* Things to do: |
| 259 | 1 Read freq low |
| 260 | 2 Read freq mid |
| 261 | 3 Read freq high |
| 262 | 4 Read envelope |
| 263 | ...? |
| 264 | */ |
| 265 | |
| 266 | static INLINE uint32 FetchDuff(uint32 P, uint32 envelope) |
| 267 | { |
| 268 | uint32 duff; |
| 269 | duff=IRAM[((IRAM[0x46+(P<<3)]+(PlayIndex[P]>>TOINDEX))&0xFF)>>1]; |
| 270 | if((IRAM[0x46+(P<<3)]+(PlayIndex[P]>>TOINDEX))&1) |
| 271 | duff>>=4; |
| 272 | duff&=0xF; |
| 273 | duff=(duff*envelope)>>16; |
| 274 | return(duff); |
| 275 | } |
| 276 | |
| 277 | #if 0 |
| 278 | static void DoNamcoSoundHQ(void) |
| 279 | { |
| 280 | int32 P,V; |
| 281 | int32 cyclesuck=(((IRAM[0x7F]>>4)&7)+1)*15; |
| 282 | |
| 283 | for(P=7;P>=(7-((IRAM[0x7F]>>4)&7));P--) |
| 284 | { |
| 285 | if((IRAM[0x44+(P<<3)]&0xE0) && (IRAM[0x47+(P<<3)]&0xF)) |
| 286 | { |
| 287 | uint32 freq; |
| 288 | int32 vco; |
| 289 | uint32 duff2,lengo,envelope; |
| 290 | |
| 291 | vco=vcount[P]; |
| 292 | freq=FreqCache[P]; |
| 293 | envelope=EnvCache[P]; |
| 294 | lengo=LengthCache[P]; |
| 295 | |
| 296 | duff2=FetchDuff(P,envelope); |
| 297 | for(V=CVBC<<1;V<SOUNDTS<<1;V++) |
| 298 | { |
| 299 | WaveHi[V>>1]+=duff2; |
| 300 | if(!vco) |
| 301 | { |
| 302 | PlayIndex[P]+=freq; |
| 303 | while((PlayIndex[P]>>TOINDEX)>=lengo) PlayIndex[P]-=lengo<<TOINDEX; |
| 304 | duff2=FetchDuff(P,envelope); |
| 305 | vco=cyclesuck; |
| 306 | } |
| 307 | vco--; |
| 308 | } |
| 309 | vcount[P]=vco; |
| 310 | } |
| 311 | } |
| 312 | CVBC=SOUNDTS; |
| 313 | } |
| 314 | #endif |
| 315 | |
| 316 | static void DoNamcoSound(int32 *Wave, int Count) |
| 317 | { |
| 318 | int P,V; |
| 319 | for(P=7;P>=7-((IRAM[0x7F]>>4)&7);P--) |
| 320 | { |
| 321 | if((IRAM[0x44+(P<<3)]&0xE0) && (IRAM[0x47+(P<<3)]&0xF)) |
| 322 | { |
| 323 | int32 inc; |
| 324 | uint32 freq; |
| 325 | int32 vco; |
| 326 | uint32 duff,duff2,lengo,envelope; |
| 327 | |
| 328 | vco=vcount[P]; |
| 329 | freq=FreqCache[P]; |
| 330 | envelope=EnvCache[P]; |
| 331 | lengo=LengthCache[P]; |
| 332 | |
| 333 | if(!freq) {/*printf("Ack");*/ continue;} |
| 334 | |
| 335 | { |
| 336 | int c=((IRAM[0x7F]>>4)&7)+1; |
| 337 | inc=(long double)(FSettings.SndRate<<15)/((long double)freq*21477272/((long double)0x400000*c*45)); |
| 338 | } |
| 339 | |
| 340 | duff=IRAM[(((IRAM[0x46+(P<<3)]+PlayIndex[P])&0xFF)>>1)]; |
| 341 | if((IRAM[0x46+(P<<3)]+PlayIndex[P])&1) |
| 342 | duff>>=4; |
| 343 | duff&=0xF; |
| 344 | duff2=(duff*envelope)>>19; |
| 345 | for(V=0;V<Count*16;V++) |
| 346 | { |
| 347 | if(vco>=inc) |
| 348 | { |
| 349 | PlayIndex[P]++; |
| 350 | if(PlayIndex[P]>=lengo) |
| 351 | PlayIndex[P]=0; |
| 352 | vco-=inc; |
| 353 | duff=IRAM[(((IRAM[0x46+(P<<3)]+PlayIndex[P])&0xFF)>>1)]; |
| 354 | if((IRAM[0x46+(P<<3)]+PlayIndex[P])&1) |
| 355 | duff>>=4; |
| 356 | duff&=0xF; |
| 357 | duff2=(duff*envelope)>>19; |
| 358 | } |
| 359 | Wave[V>>4]+=duff2; |
| 360 | vco+=0x8000; |
| 361 | } |
| 362 | vcount[P]=vco; |
| 363 | } |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | static void Mapper19_StateRestore(int version) |
| 368 | { |
| 369 | SyncPRG(); |
| 370 | FixNTAR(); |
| 371 | FixCRR(); |
| 372 | int x; |
| 373 | for(x=0x40;x<0x80;x++) |
| 374 | FixCache(x,IRAM[x]); |
| 375 | } |
| 376 | |
| 377 | static void M19SC(void) |
| 378 | { |
| 379 | if(FSettings.SndRate) |
| 380 | Mapper19_ESI(); |
| 381 | } |
| 382 | |
| 383 | void Mapper19_ESI(void) |
| 384 | { |
| 385 | GameExpSound.RChange=M19SC; |
| 386 | memset(vcount,0,sizeof(vcount)); |
| 387 | memset(PlayIndex,0,sizeof(PlayIndex)); |
| 388 | CVBC=0; |
| 389 | } |
| 390 | |
| 391 | void NSFN106_Init(void) |
| 392 | { |
| 393 | SetWriteHandler(0xf800,0xffff,Mapper19_write); |
| 394 | SetWriteHandler(0x4800,0x4fff,Mapper19_write); |
| 395 | SetReadHandler(0x4800,0x4fff,Namco_Read4800); |
| 396 | Mapper19_ESI(); |
| 397 | } |
| 398 | |
| 399 | static int battery=0; |
| 400 | |
| 401 | static void N106_Power(void) |
| 402 | { |
| 403 | int x; |
| 404 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 405 | SetWriteHandler(0x8000,0xffff,Mapper19_write); |
| 406 | SetWriteHandler(0x4020,0x5fff,Mapper19_write); |
| 407 | if(!is210) |
| 408 | { |
| 409 | SetWriteHandler(0xc000,0xdfff,Mapper19C0D8_write); |
| 410 | SetReadHandler(0x4800,0x4fff,Namco_Read4800); |
| 411 | SetReadHandler(0x5000,0x57ff,Namco_Read5000); |
| 412 | SetReadHandler(0x5800,0x5fff,Namco_Read5800); |
| 413 | NTAPage[0]=NTAPage[1]=NTAPage[2]=NTAPage[3]=0xFF; |
| 414 | FixNTAR(); |
| 415 | } |
| 416 | |
| 417 | SetReadHandler(0x6000,0x7FFF,AWRAM); |
| 418 | SetWriteHandler(0x6000,0x7FFF,BWRAM); |
| 419 | FCEU_CheatAddRAM(8,0x6000,WRAM); |
| 420 | |
| 421 | gorfus=0xFF; |
| 422 | SyncPRG(); |
| 423 | FixCRR(); |
| 424 | |
| 425 | if(!battery) |
| 426 | { |
| 427 | FCEU_dwmemset(WRAM,0,8192); |
| 428 | FCEU_dwmemset(IRAM,0,128); |
| 429 | } |
| 430 | for(x=0x40;x<0x80;x++) |
| 431 | FixCache(x,IRAM[x]); |
| 432 | } |
| 433 | |
| 434 | void Mapper19_Init(CartInfo *info) |
| 435 | { |
| 436 | is210=0; |
| 437 | battery=info->battery; |
| 438 | info->Power=N106_Power; |
| 439 | |
| 440 | MapIRQHook=NamcoIRQHook; |
| 441 | GameStateRestore=Mapper19_StateRestore; |
| 442 | GameExpSound.RChange=M19SC; |
| 443 | |
| 444 | if(FSettings.SndRate) |
| 445 | Mapper19_ESI(); |
| 446 | |
| 447 | AddExState(WRAM, 8192, 0, "WRAM"); |
| 448 | AddExState(IRAM, 128, 0, "WRAM"); |
| 449 | AddExState(N106_StateRegs, ~0, 0, 0); |
| 450 | |
| 451 | if(info->battery) |
| 452 | { |
| 453 | info->SaveGame[0]=WRAM; |
| 454 | info->SaveGameLen[0]=8192; |
| 455 | info->SaveGame[1]=IRAM; |
| 456 | info->SaveGameLen[1]=128; |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | static void Mapper210_StateRestore(int version) |
| 461 | { |
| 462 | SyncPRG(); |
| 463 | FixCRR(); |
| 464 | } |
| 465 | |
| 466 | void Mapper210_Init(CartInfo *info) |
| 467 | { |
| 468 | is210=1; |
| 469 | GameStateRestore=Mapper210_StateRestore; |
| 470 | info->Power=N106_Power; |
| 471 | AddExState(WRAM, 8192, 0, "WRAM"); |
| 472 | } |