| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Ben Parnell |
| 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 | /* None of this code should use any of the iNES bank switching wrappers. */ |
| 22 | |
| 23 | #include "mapinc.h" |
| 24 | |
| 25 | void MMC5Sound(int Count); |
| 26 | void Do5SQ(int P); |
| 27 | |
| 28 | static INLINE void MMC5SPRVROM_BANK1(uint32 A,uint32 V) |
| 29 | { |
| 30 | if(CHRptr[0]) |
| 31 | { |
| 32 | V&=CHRmask1[0]; |
| 33 | MMC5SPRVPage[(A)>>10]=&CHRptr[0][(V)<<10]-(A); |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | static INLINE void MMC5BGVROM_BANK1(uint32 A,uint32 V) {if(CHRptr[0]){V&=CHRmask1[0];MMC5BGVPage[(A)>>10]=&CHRptr[0][(V)<<10]-(A);}} |
| 38 | |
| 39 | static INLINE void MMC5SPRVROM_BANK2(uint32 A,uint32 V) {if(CHRptr[0]){V&=CHRmask2[0];MMC5SPRVPage[(A)>>10]=MMC5SPRVPage[((A)>>10)+1]=&CHRptr[0][(V)<<11]-(A);}} |
| 40 | static INLINE void MMC5BGVROM_BANK2(uint32 A,uint32 V) {if(CHRptr[0]){V&=CHRmask2[0];MMC5BGVPage[(A)>>10]=MMC5BGVPage[((A)>>10)+1]=&CHRptr[0][(V)<<11]-(A);}} |
| 41 | |
| 42 | static INLINE void MMC5SPRVROM_BANK4(uint32 A,uint32 V) {if(CHRptr[0]){V&=CHRmask4[0];MMC5SPRVPage[(A)>>10]=MMC5SPRVPage[((A)>>10)+1]= MMC5SPRVPage[((A)>>10)+2]=MMC5SPRVPage[((A)>>10)+3]=&CHRptr[0][(V)<<12]-(A);}} |
| 43 | static INLINE void MMC5BGVROM_BANK4(uint32 A,uint32 V) {if(CHRptr[0]){V&=CHRmask4[0];MMC5BGVPage[(A)>>10]=MMC5BGVPage[((A)>>10)+1]=MMC5BGVPage[((A)>>10)+2]=MMC5BGVPage[((A)>>10)+3]=&CHRptr[0][(V)<<12]-(A);}} |
| 44 | |
| 45 | static INLINE void MMC5SPRVROM_BANK8(uint32 V) {if(CHRptr[0]){V&=CHRmask8[0];MMC5SPRVPage[0]=MMC5SPRVPage[1]=MMC5SPRVPage[2]=MMC5SPRVPage[3]=MMC5SPRVPage[4]=MMC5SPRVPage[5]=MMC5SPRVPage[6]=MMC5SPRVPage[7]=&CHRptr[0][(V)<<13];}} |
| 46 | static INLINE void MMC5BGVROM_BANK8(uint32 V) {if(CHRptr[0]){V&=CHRmask8[0];MMC5BGVPage[0]=MMC5BGVPage[1]=MMC5BGVPage[2]=MMC5BGVPage[3]=MMC5BGVPage[4]=MMC5BGVPage[5]=MMC5BGVPage[6]=MMC5BGVPage[7]=&CHRptr[0][(V)<<13];}} |
| 47 | |
| 48 | static int32 inc; |
| 49 | uint8 MMC5fill[0x400] __attribute__ ((aligned (4))); |
| 50 | |
| 51 | #define MMC5IRQR mapbyte3[4] |
| 52 | #define MMC5LineCounter mapbyte3[5] |
| 53 | #define mmc5psize mapbyte1[0] |
| 54 | #define mmc5vsize mapbyte1[1] |
| 55 | |
| 56 | uint8 MMC5WRAMsize; |
| 57 | uint8 MMC5WRAMIndex[8]; |
| 58 | |
| 59 | uint8 MMC5ROMWrProtect[4]; |
| 60 | uint8 MMC5MemIn[5]; |
| 61 | |
| 62 | static void MMC5CHRA(void); |
| 63 | static void MMC5CHRB(void); |
| 64 | |
| 65 | typedef struct __cartdata { |
| 66 | unsigned long crc32; |
| 67 | unsigned char size; |
| 68 | } cartdata; |
| 69 | |
| 70 | |
| 71 | // ETROM seems to have 16KB of WRAM, ELROM seems to have 8KB |
| 72 | // EWROM seems to have 32KB of WRAM |
| 73 | |
| 74 | #define MMC5_NOCARTS 14 |
| 75 | cartdata MMC5CartList[MMC5_NOCARTS]= |
| 76 | { |
| 77 | {0x9c18762b,2}, /* L'Empereur */ |
| 78 | {0x26533405,2}, |
| 79 | {0x6396b988,2}, |
| 80 | |
| 81 | {0xaca15643,2}, /* Uncharted Waters */ |
| 82 | {0xfe3488d1,2}, /* Dai Koukai Jidai */ |
| 83 | |
| 84 | {0x15fe6d0f,2}, /* BKAC */ |
| 85 | {0x39f2ce4b,2}, /* Suikoden */ |
| 86 | |
| 87 | {0x8ce478db,2}, /* Nobunaga's Ambition 2 */ |
| 88 | {0xeee9a682,2}, |
| 89 | |
| 90 | {0x1ced086f,2}, /* Ishin no Arashi */ |
| 91 | |
| 92 | {0xf540677b,4}, /* Nobunaga...Bushou Fuuun Roku */ |
| 93 | |
| 94 | {0x6f4e4312,4}, /* Aoki Ookami..Genchou */ |
| 95 | |
| 96 | {0xf011e490,4}, /* Romance of the 3 Kingdoms 2 */ |
| 97 | {0x184c2124,4}, /* Sangokushi 2 */ |
| 98 | }; |
| 99 | |
| 100 | |
| 101 | // Called by iNESLoad() |
| 102 | void DetectMMC5WRAMSize(void) |
| 103 | { |
| 104 | int x; |
| 105 | |
| 106 | MMC5WRAMsize=1; |
| 107 | |
| 108 | for(x=0;x<MMC5_NOCARTS;x++) |
| 109 | if(iNESGameCRC32==MMC5CartList[x].crc32) |
| 110 | { |
| 111 | MMC5WRAMsize=MMC5CartList[x].size; |
| 112 | break; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | static void BuildWRAMSizeTable(void) |
| 117 | { |
| 118 | int x; |
| 119 | |
| 120 | for(x=0;x<8;x++) |
| 121 | { |
| 122 | switch(MMC5WRAMsize) |
| 123 | { |
| 124 | default: |
| 125 | case 1:MMC5WRAMIndex[x]=(x>3)?255:0;break; |
| 126 | case 2:MMC5WRAMIndex[x]=(x&4)>>2;break; |
| 127 | case 4:MMC5WRAMIndex[x]=(x>3)?255:(x&3);break; |
| 128 | } |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | static void MMC5CHRA(void) |
| 133 | { |
| 134 | int x; |
| 135 | switch(mapbyte1[1]&3) |
| 136 | { |
| 137 | case 0:MMC5SPRVROM_BANK8(mapbyte2[7]); |
| 138 | setchr8(mapbyte2[7]); |
| 139 | break; |
| 140 | case 1:MMC5SPRVROM_BANK4(0x0000,mapbyte2[3]); |
| 141 | MMC5SPRVROM_BANK4(0x1000,mapbyte2[7]); |
| 142 | setchr4(0x0000,mapbyte2[3]); |
| 143 | setchr4(0x1000,mapbyte2[7]); |
| 144 | break; |
| 145 | case 2:MMC5SPRVROM_BANK2(0x0000,mapbyte2[1]); |
| 146 | MMC5SPRVROM_BANK2(0x0800,mapbyte2[3]); |
| 147 | MMC5SPRVROM_BANK2(0x1000,mapbyte2[5]); |
| 148 | MMC5SPRVROM_BANK2(0x1800,mapbyte2[7]); |
| 149 | setchr2(0x0000,mapbyte2[1]); |
| 150 | setchr2(0x0800,mapbyte2[3]); |
| 151 | setchr2(0x1000,mapbyte2[5]); |
| 152 | setchr2(0x1800,mapbyte2[7]); |
| 153 | break; |
| 154 | case 3: |
| 155 | for(x=0;x<8;x++) |
| 156 | { |
| 157 | setchr1(x<<10,mapbyte2[x]); |
| 158 | MMC5SPRVROM_BANK1(x<<10,mapbyte2[x]); |
| 159 | } |
| 160 | break; |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | static void MMC5CHRB(void) |
| 165 | { |
| 166 | int x; |
| 167 | switch(mapbyte1[1]&3) |
| 168 | { |
| 169 | case 0:MMC5BGVROM_BANK8(mapbyte3[3]); |
| 170 | setchr8(mapbyte3[3]); |
| 171 | break; |
| 172 | case 1: |
| 173 | MMC5BGVROM_BANK4(0x0000,mapbyte3[3]); |
| 174 | MMC5BGVROM_BANK4(0x1000,mapbyte3[3]); |
| 175 | setchr4(0x0000,mapbyte3[3]); |
| 176 | setchr4(0x1000,mapbyte3[3]); |
| 177 | break; |
| 178 | case 2:MMC5BGVROM_BANK2(0x0000,mapbyte3[1]); |
| 179 | MMC5BGVROM_BANK2(0x0800,mapbyte3[3]); |
| 180 | MMC5BGVROM_BANK2(0x1000,mapbyte3[1]); |
| 181 | MMC5BGVROM_BANK2(0x1800,mapbyte3[3]); |
| 182 | setchr2(0x0000,mapbyte3[1]); |
| 183 | setchr2(0x0800,mapbyte3[3]); |
| 184 | setchr2(0x1000,mapbyte3[1]); |
| 185 | setchr2(0x1800,mapbyte3[3]); |
| 186 | break; |
| 187 | case 3: |
| 188 | for(x=0;x<8;x++) |
| 189 | { |
| 190 | setchr1(x<<10,mapbyte3[x&3]); |
| 191 | MMC5BGVROM_BANK1(x<<10,mapbyte3[x&3]); |
| 192 | } |
| 193 | break; |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | static void FASTAPASS(2) MMC5WRAM(uint32 A, uint32 V) |
| 198 | { |
| 199 | V=MMC5WRAMIndex[V&7]; |
| 200 | if(V!=255) |
| 201 | { |
| 202 | setprg8r(0x10,A,V); |
| 203 | MMC5MemIn[(A-0x6000)>>13]=1; |
| 204 | } |
| 205 | else |
| 206 | MMC5MemIn[(A-0x6000)>>13]=0; |
| 207 | } |
| 208 | |
| 209 | static void MMC5PRG(void) |
| 210 | { |
| 211 | int x; |
| 212 | |
| 213 | switch(mapbyte1[0]&3) |
| 214 | { |
| 215 | case 0: |
| 216 | MMC5ROMWrProtect[0]=MMC5ROMWrProtect[1]= |
| 217 | MMC5ROMWrProtect[2]=MMC5ROMWrProtect[3]=1; |
| 218 | setprg32(0x8000,((mapbyte1[5]&0x7F)>>2)); |
| 219 | X6502_Rebase(); |
| 220 | for(x=0;x<4;x++) |
| 221 | MMC5MemIn[1+x]=1; |
| 222 | break; |
| 223 | case 1: |
| 224 | if(mapbyte1[5]&0x80) |
| 225 | { |
| 226 | MMC5ROMWrProtect[0]=MMC5ROMWrProtect[1]=1; |
| 227 | setprg16(0x8000,(mapbyte1[5]>>1)); |
| 228 | MMC5MemIn[1]=MMC5MemIn[2]=1; |
| 229 | } |
| 230 | else |
| 231 | { |
| 232 | MMC5ROMWrProtect[0]=MMC5ROMWrProtect[1]=0; |
| 233 | MMC5WRAM(0x8000,mapbyte1[5]&7&0xFE); |
| 234 | MMC5WRAM(0xA000,(mapbyte1[5]&7&0xFE)+1); |
| 235 | } |
| 236 | MMC5MemIn[3]=MMC5MemIn[4]=1; |
| 237 | MMC5ROMWrProtect[2]=MMC5ROMWrProtect[3]=1; |
| 238 | setprg16(0xC000,(mapbyte1[7]&0x7F)>>1); |
| 239 | break; |
| 240 | case 2: |
| 241 | if(mapbyte1[5]&0x80) |
| 242 | { |
| 243 | MMC5MemIn[1]=MMC5MemIn[2]=1; |
| 244 | MMC5ROMWrProtect[0]=MMC5ROMWrProtect[1]=1; |
| 245 | setprg16(0x8000,(mapbyte1[5]&0x7F)>>1); |
| 246 | } |
| 247 | else |
| 248 | { |
| 249 | MMC5ROMWrProtect[0]=MMC5ROMWrProtect[1]=0; |
| 250 | MMC5WRAM(0x8000,mapbyte1[5]&7&0xFE); |
| 251 | MMC5WRAM(0xA000,(mapbyte1[5]&7&0xFE)+1); |
| 252 | } |
| 253 | if(mapbyte1[6]&0x80) |
| 254 | {MMC5ROMWrProtect[2]=1;MMC5MemIn[3]=1;setprg8(0xC000,mapbyte1[6]&0x7F);} |
| 255 | else |
| 256 | {MMC5ROMWrProtect[2]=0;MMC5WRAM(0xC000,mapbyte1[6]&7);} |
| 257 | MMC5MemIn[4]=1; |
| 258 | MMC5ROMWrProtect[3]=1; |
| 259 | setprg8(0xE000,mapbyte1[7]&0x7F); |
| 260 | break; |
| 261 | case 3: |
| 262 | for(x=0;x<3;x++) |
| 263 | if(mapbyte1[4+x]&0x80) |
| 264 | { |
| 265 | MMC5ROMWrProtect[0]=1; |
| 266 | setprg8(0x8000+(x<<13),mapbyte1[4+x]&0x7F); |
| 267 | MMC5MemIn[1+x]=1; |
| 268 | } |
| 269 | else |
| 270 | { |
| 271 | MMC5ROMWrProtect[0]=0; |
| 272 | MMC5WRAM(0x8000+(x<<13),mapbyte1[4+x]&7); |
| 273 | } |
| 274 | MMC5MemIn[4]=1; |
| 275 | MMC5ROMWrProtect[3]=1; |
| 276 | setprg8(0xE000,mapbyte1[7]&0x7F); |
| 277 | break; |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | #define mul1 mapbyte3[6] |
| 282 | #define mul2 mapbyte3[7] |
| 283 | |
| 284 | static DECLFW(Mapper5_write) |
| 285 | { |
| 286 | switch(A) |
| 287 | { |
| 288 | default:break; |
| 289 | case 0x5105: |
| 290 | { |
| 291 | int x; |
| 292 | for(x=0;x<4;x++) |
| 293 | { |
| 294 | switch((V>>(x<<1))&3) |
| 295 | { |
| 296 | case 0:PPUNTARAM|=1<<x;vnapage[x]=NTARAM;break; |
| 297 | case 1:PPUNTARAM|=1<<x;vnapage[x]=NTARAM+0x400;break; |
| 298 | case 2:PPUNTARAM|=1<<x;vnapage[x]=MapperExRAM+0x6000;break; |
| 299 | case 3:PPUNTARAM&=~(1<<x);vnapage[x]=MMC5fill;break; |
| 300 | } |
| 301 | } |
| 302 | } |
| 303 | mapbyte4[3]=V; |
| 304 | break; |
| 305 | |
| 306 | case 0x5113:mapbyte4[6]=V;MMC5WRAM(0x6000,V&7); |
| 307 | X6502_Rebase();break; |
| 308 | case 0x5100:mapbyte1[0]=V;MMC5PRG(); |
| 309 | X6502_Rebase();break; |
| 310 | case 0x5101:mapbyte1[1]=V; |
| 311 | if(!mapbyte4[7]) |
| 312 | {MMC5CHRB();MMC5CHRA();} |
| 313 | else |
| 314 | {MMC5CHRA();MMC5CHRB();} |
| 315 | break; |
| 316 | |
| 317 | case 0x5114: |
| 318 | case 0x5115: |
| 319 | case 0x5116: |
| 320 | case 0x5117: |
| 321 | mapbyte1[A&7]=V;MMC5PRG(); |
| 322 | X6502_Rebase();break; |
| 323 | |
| 324 | case 0x5120: |
| 325 | case 0x5121: |
| 326 | case 0x5122: |
| 327 | case 0x5123: |
| 328 | case 0x5124: |
| 329 | case 0x5125: |
| 330 | case 0x5126: |
| 331 | case 0x5127:mapbyte4[7]=0; |
| 332 | mapbyte2[A&7]=V;MMC5CHRA();break; |
| 333 | case 0x5128: |
| 334 | case 0x5129: |
| 335 | case 0x512a: |
| 336 | case 0x512b:mapbyte4[7]=1; |
| 337 | mapbyte3[A&3]=V;MMC5CHRB();break; |
| 338 | case 0x5102:mapbyte4[0]=V;break; |
| 339 | case 0x5103:mapbyte4[1]=V;break; |
| 340 | case 0x5104:mapbyte4[2]=V;MMC5HackCHRMode=V&3;break; |
| 341 | case 0x5106:if(V!=mapbyte4[4]) |
| 342 | { |
| 343 | uint32 t; |
| 344 | t=V|(V<<8)|(V<<16)|(V<<24); |
| 345 | FCEU_dwmemset(MMC5fill,t,0x3c0); |
| 346 | } |
| 347 | mapbyte4[4]=V; |
| 348 | break; |
| 349 | case 0x5107:if(V!=mapbyte4[5]) |
| 350 | { |
| 351 | unsigned char moop; |
| 352 | uint32 t; |
| 353 | moop=V|(V<<2)|(V<<4)|(V<<6); |
| 354 | t=moop|(moop<<8)|(moop<<16)|(moop<<24); |
| 355 | FCEU_dwmemset(MMC5fill+0x3c0,t,0x40); |
| 356 | } |
| 357 | mapbyte4[5]=V; |
| 358 | break; |
| 359 | case 0x5200:MMC5HackSPMode=V;break; |
| 360 | case 0x5201:MMC5HackSPScroll=(V>>3)&0x1F;break; |
| 361 | case 0x5202:MMC5HackSPPage=V&0x3F;break; |
| 362 | case 0x5203:X6502_IRQEnd(FCEU_IQEXT);IRQCount=V;break; |
| 363 | case 0x5204:X6502_IRQEnd(FCEU_IQEXT);IRQa=V&0x80;break; |
| 364 | case 0x5205:mul1=V;break; |
| 365 | case 0x5206:mul2=V;break; |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | DECLFR(MMC5_ReadROMRAM) |
| 370 | { |
| 371 | if(MMC5MemIn[(A-0x6000)>>13]) |
| 372 | return Page[A>>11][A]; |
| 373 | else |
| 374 | return X.DB; |
| 375 | } |
| 376 | |
| 377 | DECLFW(MMC5_WriteROMRAM) |
| 378 | { |
| 379 | if(A>=0x8000) |
| 380 | if(MMC5ROMWrProtect[(A-0x8000)>>13]) |
| 381 | return; |
| 382 | if(MMC5MemIn[(A-0x6000)>>13]) |
| 383 | if(((mapbyte4[0]&3)|((mapbyte4[1]&3)<<2)) == 6) |
| 384 | Page[A>>11][A]=V; |
| 385 | } |
| 386 | |
| 387 | static DECLFW(MMC5_ExRAMWr) |
| 388 | { |
| 389 | if(MMC5HackCHRMode!=3) |
| 390 | (MapperExRAM+0x6000)[A&0x3ff]=V; |
| 391 | } |
| 392 | |
| 393 | static DECLFR(MMC5_ExRAMRd) |
| 394 | { |
| 395 | /* Not sure if this is correct, so I'll comment it out for now. */ |
| 396 | //if(MMC5HackCHRMode>=2) |
| 397 | return (MapperExRAM+0x6000)[A&0x3ff]; |
| 398 | //else |
| 399 | // return(X.DB); |
| 400 | } |
| 401 | |
| 402 | static DECLFR(MMC5_read) |
| 403 | { |
| 404 | switch(A) |
| 405 | { |
| 406 | //default:printf("$%04x\n",A);break; |
| 407 | case 0x5204:X6502_IRQEnd(FCEU_IQEXT); |
| 408 | { |
| 409 | uint8 x; |
| 410 | x=MMC5IRQR; |
| 411 | MMC5IRQR&=0x40; |
| 412 | return x; |
| 413 | } |
| 414 | case 0x5205:return (mul1*mul2); |
| 415 | case 0x5206:return ((mul1*mul2)>>8); |
| 416 | } |
| 417 | return(X.DB); |
| 418 | } |
| 419 | |
| 420 | uint8 dorko[0x400]; |
| 421 | |
| 422 | void MMC5Synco(void) |
| 423 | { |
| 424 | int x; |
| 425 | |
| 426 | MMC5PRG(); |
| 427 | for(x=0;x<4;x++) |
| 428 | { |
| 429 | switch((mapbyte4[3]>>(x<<1))&3) |
| 430 | { |
| 431 | case 0:PPUNTARAM|=1<<x;vnapage[x]=NTARAM;break; |
| 432 | case 1:PPUNTARAM|=1<<x;vnapage[x]=NTARAM+0x400;break; |
| 433 | case 2:PPUNTARAM|=1<<x;vnapage[x]=MapperExRAM+0x6000;break; |
| 434 | case 3:PPUNTARAM&=~(1<<x);vnapage[x]=MMC5fill;break; |
| 435 | } |
| 436 | } |
| 437 | MMC5WRAM(0x6000,mapbyte4[6]&7); |
| 438 | if(!mapbyte4[7]) |
| 439 | { |
| 440 | MMC5CHRB(); |
| 441 | MMC5CHRA(); |
| 442 | } |
| 443 | else |
| 444 | { |
| 445 | MMC5CHRA(); |
| 446 | MMC5CHRB(); |
| 447 | } |
| 448 | { |
| 449 | uint32 t; |
| 450 | t=mapbyte4[4]|(mapbyte4[4]<<8)|(mapbyte4[4]<<16)|(mapbyte4[4]<<24); |
| 451 | FCEU_dwmemset(MMC5fill,t,0x3c0); |
| 452 | } |
| 453 | { |
| 454 | unsigned char moop; |
| 455 | uint32 t; |
| 456 | moop=mapbyte4[5]|(mapbyte4[5]<<2)|(mapbyte4[5]<<4)|(mapbyte4[5]<<6); |
| 457 | t=moop|(moop<<8)|(moop<<16)|(moop<<24); |
| 458 | FCEU_dwmemset(MMC5fill+0x3c0,t,0x40); |
| 459 | } |
| 460 | X6502_IRQEnd(FCEU_IQEXT); |
| 461 | MMC5HackCHRMode=mapbyte4[2]&3; |
| 462 | X6502_Rebase(); |
| 463 | } |
| 464 | |
| 465 | void MMC5_hbo(void) |
| 466 | { |
| 467 | if(scanline==0) |
| 468 | MMC5LineCounter=0; |
| 469 | |
| 470 | if(MMC5LineCounter<245) |
| 471 | { |
| 472 | MMC5LineCounter++; |
| 473 | if(MMC5LineCounter==IRQCount) MMC5IRQR|=0x80; |
| 474 | if((MMC5LineCounter==IRQCount && IRQa&0x80)) |
| 475 | X6502_IRQBegin(FCEU_IQEXT); |
| 476 | } |
| 477 | if(MMC5LineCounter>=239) |
| 478 | MMC5IRQR|=0x40; |
| 479 | } |
| 480 | |
| 481 | void MMC5_hb(void) |
| 482 | { |
| 483 | if(scanline==240) |
| 484 | { |
| 485 | MMC5LineCounter=0; |
| 486 | MMC5IRQR=0x40; |
| 487 | return; |
| 488 | } |
| 489 | |
| 490 | if(MMC5LineCounter<240) |
| 491 | { |
| 492 | MMC5LineCounter++; |
| 493 | if(MMC5LineCounter==IRQCount) |
| 494 | { |
| 495 | MMC5IRQR|=0x80; |
| 496 | if(IRQa&0x80) |
| 497 | X6502_IRQBegin(FCEU_IQEXT); |
| 498 | } |
| 499 | } |
| 500 | // printf("%d:%d\n",MMC5LineCounter,scanline); |
| 501 | if(MMC5LineCounter==240) |
| 502 | MMC5IRQR=0; |
| 503 | } |
| 504 | |
| 505 | void Mapper5_StateRestore(int version) |
| 506 | { |
| 507 | if(version<=70) |
| 508 | { |
| 509 | uint8 tmp[8192]; |
| 510 | |
| 511 | FCEU_memmove(tmp,MapperExRAM,8192); |
| 512 | FCEU_memmove(MapperExRAM,MapperExRAM+8192,16384+8192); |
| 513 | FCEU_memmove(MapperExRAM+16384+8192,tmp,8192); |
| 514 | } |
| 515 | MMC5Synco(); |
| 516 | } |
| 517 | |
| 518 | #define MMC5PSG (MapperExRAM+0x640B+8) |
| 519 | |
| 520 | static int C5BC[3]={0,0,0}; |
| 521 | |
| 522 | static void Do5PCM(void) |
| 523 | { |
| 524 | int32 V; |
| 525 | int32 start,end; |
| 526 | |
| 527 | start=C5BC[2]; |
| 528 | end=(timestamp<<16)/soundtsinc; |
| 529 | if(end<=start) return; |
| 530 | C5BC[2]=end; |
| 531 | |
| 532 | if(!(MMC5PSG[0x10]&0x40) && MMC5PSG[0x11]) |
| 533 | for(V=start;V<end;V++) |
| 534 | Wave[V>>4]+=MMC5PSG[0x11]<<2; |
| 535 | } |
| 536 | |
| 537 | DECLFW(Mapper5_SW) |
| 538 | { |
| 539 | GameExpSound.Fill=MMC5Sound; |
| 540 | A&=0x1F; |
| 541 | |
| 542 | switch(A) |
| 543 | { |
| 544 | case 0x10: |
| 545 | case 0x11:Do5PCM();break; |
| 546 | |
| 547 | case 0x0:Do5SQ(0);break; |
| 548 | case 0x2:Do5SQ(0);break; |
| 549 | case 0x3:Do5SQ(0);break; |
| 550 | case 0x4:Do5SQ(1);break; |
| 551 | case 0x6:Do5SQ(1);break; |
| 552 | case 0x7:Do5SQ(1);break; |
| 553 | case 0x15: |
| 554 | { |
| 555 | int t=V^MMC5PSG[0x15]; |
| 556 | if(t&1) |
| 557 | Do5SQ(0); |
| 558 | if(t&2) |
| 559 | Do5SQ(1); |
| 560 | } |
| 561 | break; |
| 562 | } |
| 563 | MMC5PSG[A]=V; |
| 564 | } |
| 565 | |
| 566 | static int32 vcount[2]; |
| 567 | void Do5SQ(int P) |
| 568 | { |
| 569 | int32 start,end; |
| 570 | int V; |
| 571 | int32 freq; |
| 572 | |
| 573 | start=C5BC[P]; |
| 574 | end=(timestamp<<16)/soundtsinc; |
| 575 | if(end<=start) return; |
| 576 | C5BC[P]=end; |
| 577 | |
| 578 | |
| 579 | |
| 580 | if(MMC5PSG[0x15]&(P+1)) |
| 581 | { |
| 582 | unsigned long dcycs; |
| 583 | unsigned char amplitude; |
| 584 | long vcoo; |
| 585 | |
| 586 | freq=(((MMC5PSG[(P<<2)+0x2]|((MMC5PSG[(P<<2)+0x3]&7)<<8)))); |
| 587 | |
| 588 | if(freq<8) goto mmc5enda; |
| 589 | freq+=1; |
| 590 | inc=(long double)((unsigned long)((FSettings.SndRate OVERSAMPLE)<<12))/((long double)PSG_base/freq); |
| 591 | |
| 592 | switch(MMC5PSG[P<<2]&0xC0) |
| 593 | { |
| 594 | default: |
| 595 | case 0x00:dcycs=inc>>3;break; |
| 596 | case 0x40:dcycs=inc>>2;break; |
| 597 | case 0x80:dcycs=inc>>1;break; |
| 598 | case 0xC0:dcycs=(inc+inc+inc)>>2;break; |
| 599 | } |
| 600 | |
| 601 | amplitude=(MMC5PSG[P<<2]&15)<<4; |
| 602 | |
| 603 | vcoo=vcount[P]; |
| 604 | for(V=start;V<end;V++) |
| 605 | { |
| 606 | if(vcoo<dcycs) |
| 607 | Wave[V>>4]+=amplitude; |
| 608 | vcoo+=0x1000; |
| 609 | if(vcoo>=inc) vcoo-=inc; |
| 610 | } |
| 611 | vcount[P]=vcoo; |
| 612 | } |
| 613 | mmc5enda:; // semi-colon must be here for MSVC |
| 614 | } |
| 615 | |
| 616 | void MMC5Sound(int Count) |
| 617 | { |
| 618 | int x; |
| 619 | Do5SQ(0); |
| 620 | Do5SQ(1); |
| 621 | Do5PCM(); |
| 622 | for(x=0;x<3;x++) |
| 623 | C5BC[x]=Count; |
| 624 | } |
| 625 | |
| 626 | static void MMC5SoundC(void) |
| 627 | { |
| 628 | if(FSettings.SndRate) |
| 629 | Mapper5_ESI(); |
| 630 | else |
| 631 | SetWriteHandler(0x5000,0x5015,0); |
| 632 | } |
| 633 | |
| 634 | void Mapper5_ESI(void) |
| 635 | { |
| 636 | GameExpSound.RChange=MMC5SoundC; |
| 637 | |
| 638 | if(FSettings.SndRate) |
| 639 | { |
| 640 | SetWriteHandler(0x5000,0x5015,Mapper5_SW); |
| 641 | SetWriteHandler(0x5205,0x5206,Mapper5_write); |
| 642 | SetReadHandler(0x5205,0x5206,MMC5_read); |
| 643 | } |
| 644 | if(FCEUGameInfo.type==GIT_NSF) |
| 645 | { |
| 646 | SetWriteHandler(0x5c00,0x5fef,MMC5_ExRAMWr); |
| 647 | SetReadHandler(0x5c00,0x5fef,MMC5_ExRAMRd); |
| 648 | MMC5HackCHRMode=2; |
| 649 | } |
| 650 | else |
| 651 | GameHBIRQHook=MMC5_hb; |
| 652 | } |
| 653 | |
| 654 | static void GenMMC5Reset(void) |
| 655 | { |
| 656 | mapbyte1[4]=mapbyte1[5]=mapbyte1[6]=mapbyte1[7]=~0; |
| 657 | mapbyte1[0]=mapbyte1[1]=3; |
| 658 | mapbyte4[2]=0; |
| 659 | |
| 660 | mapbyte4[3]=mapbyte4[4]=mapbyte4[5]=0xFF; |
| 661 | |
| 662 | MMC5Synco(); |
| 663 | |
| 664 | SetWriteHandler(0x4020,0x5bff,Mapper5_write); |
| 665 | SetReadHandler(0x4020,0x5bff,MMC5_read); |
| 666 | |
| 667 | SetWriteHandler(0x5c00,0x5fff,MMC5_ExRAMWr); |
| 668 | SetReadHandler(0x5c00,0x5fff,MMC5_ExRAMRd); |
| 669 | |
| 670 | SetWriteHandler(0x6000,0xFFFF,MMC5_WriteROMRAM); |
| 671 | SetReadHandler(0x6000,0xFFFF,MMC5_ReadROMRAM); |
| 672 | |
| 673 | Mapper5_ESI(); |
| 674 | |
| 675 | GameHBIRQHook=MMC5_hb; |
| 676 | FCEU_CheatAddRAM(8,0x6000,WRAM); |
| 677 | FCEU_CheatAddRAM(1,0x5c00,MapperExRAM+0x6000); |
| 678 | } |
| 679 | |
| 680 | void Mapper5_init(void) |
| 681 | { |
| 682 | AddExState(&MMC5HackSPMode, 1, 0, "SPLM"); |
| 683 | AddExState(&MMC5HackSPScroll, 1, 0, "SPLS"); |
| 684 | AddExState(&MMC5HackSPPage, 1, 0, "SPLP"); |
| 685 | SetupCartPRGMapping(0x10,WRAM,32768,1); |
| 686 | GenMMC5Reset(); |
| 687 | BuildWRAMSizeTable(); |
| 688 | GameStateRestore=Mapper5_StateRestore; |
| 689 | } |
| 690 | |
| 691 | static int m5boo; |
| 692 | static void GenMMC5_Close(void) |
| 693 | { |
| 694 | UNIFOpenWRAM(UOW_WR,0,1); |
| 695 | if(m5boo<=16) |
| 696 | UNIFWriteWRAM(WRAM,8192); |
| 697 | else |
| 698 | UNIFWriteWRAM(WRAM,32768); |
| 699 | UNIFCloseWRAM(); |
| 700 | } |
| 701 | |
| 702 | static void GenMMC5_Init(int wsize, int battery) |
| 703 | { |
| 704 | SetupCartPRGMapping(0x10,WRAM,32768,1); |
| 705 | AddExState(WRAM, 8192, 0, "WRAM"); |
| 706 | AddExState(MapperExRAM, 32768, 0, "MEXR"); |
| 707 | AddExState(&IRQCount, 4, 1, "IRQC"); |
| 708 | AddExState(&IRQa, 1, 0, "IRQA"); |
| 709 | AddExState(mapbyte1, 32, 0, "MPBY"); |
| 710 | AddExState(&MMC5HackSPMode, 1, 0, "SPLM"); |
| 711 | AddExState(&MMC5HackSPScroll, 1, 0, "SPLS"); |
| 712 | AddExState(&MMC5HackSPPage, 1, 0, "SPLP"); |
| 713 | |
| 714 | MMC5WRAMsize=wsize/8; |
| 715 | BuildWRAMSizeTable(); |
| 716 | GameStateRestore=Mapper5_StateRestore; |
| 717 | BoardPower=GenMMC5Reset; |
| 718 | |
| 719 | if(battery) |
| 720 | { |
| 721 | UNIFOpenWRAM(UOW_RD,0,1); |
| 722 | if(wsize<=16) |
| 723 | UNIFReadWRAM(WRAM,8192); |
| 724 | else |
| 725 | UNIFReadWRAM(WRAM,32768); |
| 726 | UNIFCloseWRAM(); |
| 727 | BoardClose=GenMMC5_Close; |
| 728 | m5boo=wsize; |
| 729 | } |
| 730 | |
| 731 | MMC5HackVROMMask=CHRmask4[0]; |
| 732 | MMC5HackExNTARAMPtr=MapperExRAM+0x6000; |
| 733 | MMC5Hack=1; |
| 734 | MMC5HackVROMPTR=CHRptr[0]; |
| 735 | MMC5HackCHRMode=0; |
| 736 | MMC5HackSPMode=MMC5HackSPScroll=MMC5HackSPPage=0; |
| 737 | |
| 738 | } |
| 739 | |
| 740 | // ETROM seems to have 16KB of WRAM, ELROM seems to have 8KB |
| 741 | // EWROM seems to have 32KB of WRAM |
| 742 | |
| 743 | // ETROM and EWROM are battery-backed, ELROM isn't. |
| 744 | |
| 745 | void ETROM_Init(void) |
| 746 | { |
| 747 | GenMMC5_Init(16,1); |
| 748 | } |
| 749 | |
| 750 | void ELROM_Init(void) |
| 751 | { |
| 752 | GenMMC5_Init(8,0); |
| 753 | } |
| 754 | |
| 755 | void EWROM_Init(void) |
| 756 | { |
| 757 | GenMMC5_Init(32,1); |
| 758 | } |
| 759 | |
| 760 | void EKROM_Init(void) |
| 761 | { |
| 762 | GenMMC5_Init(8,1); |
| 763 | } |