| 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 | #include "mapinc.h" |
| 22 | |
| 23 | #define dopol mapbyte1[0] |
| 24 | #define gorfus mapbyte1[1] |
| 25 | #define gorko mapbyte1[2] |
| 26 | |
| 27 | static void NamcoSound(int Count); |
| 28 | static void NamcoSoundHack(void); |
| 29 | |
| 30 | static int32 inc; |
| 31 | void FP_FASTAPASS(1) NamcoIRQHook(int a) |
| 32 | { |
| 33 | if(IRQa) |
| 34 | { |
| 35 | IRQCount+=a; |
| 36 | if(IRQCount>=0x7fff) |
| 37 | { |
| 38 | X6502_IRQBegin(FCEU_IQEXT); |
| 39 | IRQa=0; |
| 40 | IRQCount=0x7fff; |
| 41 | } |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | DECLFR(Namco_Read4800) |
| 46 | { |
| 47 | uint8 ret=MapperExRAM[dopol&0x7f]; |
| 48 | if(dopol&0x80) |
| 49 | dopol=(dopol&0x80)|((dopol+1)&0x7f); |
| 50 | return ret; |
| 51 | } |
| 52 | |
| 53 | DECLFR(Namco_Read5000) |
| 54 | { |
| 55 | return(IRQCount); |
| 56 | } |
| 57 | |
| 58 | DECLFR(Namco_Read5800) |
| 59 | { |
| 60 | return(IRQCount>>8); |
| 61 | } |
| 62 | |
| 63 | static void FASTAPASS(2) DoNTARAMROM(int w, uint8 V) |
| 64 | { |
| 65 | mapbyte2[w]=V; |
| 66 | //if(V>=0xE0) |
| 67 | // setntamem(NTARAM+((V&1)<<10), 1, w); |
| 68 | if((V>=0xE0)) // || ((gorko>>(6+(w>>1)))&1) ) |
| 69 | setntamem(NTARAM+((V&1)<<10), 1, w); |
| 70 | else |
| 71 | { |
| 72 | V&=CHRmask1[0]; |
| 73 | setntamem(VROM+(V<<10), 0, w); |
| 74 | } |
| 75 | // else |
| 76 | // setntamem(NTARAM+((V&1)<<10), 1, w); |
| 77 | } |
| 78 | |
| 79 | static void FixNTAR(void) |
| 80 | { |
| 81 | int x; |
| 82 | |
| 83 | for(x=0;x<4;x++) |
| 84 | DoNTARAMROM(x,mapbyte2[x]); |
| 85 | } |
| 86 | |
| 87 | static void FASTAPASS(2) DoCHRRAMROM(int x, uint8 V) |
| 88 | { |
| 89 | mapbyte3[x]=V; |
| 90 | if(!((gorfus>>((x>>2)+6))&1) && (V>=0xE0)) |
| 91 | VRAM_BANK1(x<<10,V&7); |
| 92 | else |
| 93 | VROM_BANK1(x<<10,V); |
| 94 | } |
| 95 | |
| 96 | static void FixCRR(void) |
| 97 | { |
| 98 | int x; |
| 99 | for(x=0;x<8;x++) |
| 100 | DoCHRRAMROM(x,mapbyte3[x]); |
| 101 | } |
| 102 | |
| 103 | static DECLFW(Mapper19_write) |
| 104 | { |
| 105 | A&=0xF800; |
| 106 | |
| 107 | if(A>=0x8000 && A<=0xb800) |
| 108 | DoCHRRAMROM((A-0x8000)>>11,V); |
| 109 | else if(A>=0xC000 && A<=0xd800) |
| 110 | DoNTARAMROM((A-0xC000)>>11,V); |
| 111 | else switch(A) |
| 112 | { |
| 113 | case 0x4800: |
| 114 | if(dopol&0x40) |
| 115 | { |
| 116 | if(FSettings.SndRate) |
| 117 | { |
| 118 | NamcoSoundHack(); |
| 119 | GameExpSound.Fill=NamcoSound; |
| 120 | } |
| 121 | } |
| 122 | MapperExRAM[dopol&0x7f]=V; |
| 123 | if(dopol&0x80) |
| 124 | dopol=(dopol&0x80)|((dopol+1)&0x7f); |
| 125 | break; |
| 126 | |
| 127 | case 0xf800: dopol=V;break; |
| 128 | case 0x5000: IRQCount&=0xFF00;IRQCount|=V;X6502_IRQEnd(FCEU_IQEXT);break; |
| 129 | case 0x5800: IRQCount&=0x00ff;IRQCount|=(V&0x7F)<<8; |
| 130 | IRQa=V&0x80; |
| 131 | X6502_IRQEnd(FCEU_IQEXT); |
| 132 | break; |
| 133 | |
| 134 | case 0xE000:gorko=V&0xC0; |
| 135 | //FixNTAR(); |
| 136 | ROM_BANK8(0x8000,V); |
| 137 | break; |
| 138 | case 0xE800:gorfus=V&0xC0; |
| 139 | FixCRR(); |
| 140 | ROM_BANK8(0xA000,V); |
| 141 | break; |
| 142 | case 0xF000: |
| 143 | ROM_BANK8(0xC000,V); |
| 144 | break; |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | static int dwave=0; |
| 149 | static void DoNamcoSound(uint32 *Wave, int Count); |
| 150 | |
| 151 | static void NamcoSoundHack(void) |
| 152 | { |
| 153 | int32 z,a; |
| 154 | |
| 155 | z=((timestamp<<16)/soundtsinc)>>4; |
| 156 | a=z-dwave; |
| 157 | if(a) |
| 158 | DoNamcoSound(&Wave[dwave], a); |
| 159 | dwave+=a; |
| 160 | } |
| 161 | |
| 162 | static void NamcoSound(int Count) |
| 163 | { |
| 164 | int32 z,a; |
| 165 | |
| 166 | z=((timestamp<<16)/soundtsinc)>>4; |
| 167 | a=z-dwave; |
| 168 | if(a) |
| 169 | DoNamcoSound(&Wave[dwave], a); |
| 170 | dwave=0; |
| 171 | } |
| 172 | |
| 173 | static uint8 PlayIndex[8]; |
| 174 | static int32 vcount[8]; |
| 175 | |
| 176 | static void DoNamcoSound(uint32 *Wave, int Count) |
| 177 | { |
| 178 | int P,V; |
| 179 | |
| 180 | |
| 181 | //FCEU_DispMessage("%d",MapperExRAM[0x7F]>>4); |
| 182 | for(P=7;P>=7-((MapperExRAM[0x7F]>>4)&7);P--) |
| 183 | { |
| 184 | if((MapperExRAM[0x44+(P<<3)]&0xE0) && (MapperExRAM[0x47+(P<<3)]&0xF)) |
| 185 | { |
| 186 | uint32 freq; |
| 187 | int32 vco; |
| 188 | uint32 duff,duff2,lengo,envelope; |
| 189 | //uint64 ta; |
| 190 | |
| 191 | vco=vcount[P]; |
| 192 | freq=MapperExRAM[0x40+(P<<3)]; |
| 193 | freq|=MapperExRAM[0x42+(P<<3)]<<8; |
| 194 | freq|=(MapperExRAM[0x44+(P<<3)]&3)<<16; |
| 195 | |
| 196 | if(!freq) continue; |
| 197 | |
| 198 | { |
| 199 | int c=((MapperExRAM[0x7F]>>4)&7)+1; |
| 200 | |
| 201 | inc=(long double)(FSettings.SndRate<<15)/((long double)freq* |
| 202 | 21477272/((long double)0x400000*c*45)); |
| 203 | } |
| 204 | |
| 205 | envelope=((MapperExRAM[0x47+(P<<3)]&0xF)<<18)/15; |
| 206 | duff=MapperExRAM[(((MapperExRAM[0x46+(P<<3)]+PlayIndex[P])>>1)&0xFF)]; |
| 207 | if((MapperExRAM[0x46+(P<<3)]+PlayIndex[P])&1) |
| 208 | duff>>=4; |
| 209 | duff&=0xF; |
| 210 | duff2=(duff*envelope)>>14; |
| 211 | |
| 212 | lengo=((8-((MapperExRAM[0x44+(P<<3)]>>2)&7)))<<2; |
| 213 | for(V=0;V<Count OVERSAMPLE;V++) |
| 214 | { |
| 215 | if(vco>=inc) |
| 216 | { |
| 217 | PlayIndex[P]++; |
| 218 | if(PlayIndex[P]>=lengo) |
| 219 | PlayIndex[P]=0; |
| 220 | vco-=inc; |
| 221 | duff=MapperExRAM[(((MapperExRAM[0x46+(P<<3)]+PlayIndex[P])&0xFF)>>1)]; |
| 222 | if((MapperExRAM[0x46+(P<<3)]+PlayIndex[P])&1) |
| 223 | duff>>=4; |
| 224 | duff&=0xF; |
| 225 | duff2=(duff*envelope)>>14; |
| 226 | } |
| 227 | Wave[V>>4]+=duff2; |
| 228 | vco+=0x8000; |
| 229 | } |
| 230 | vcount[P]=vco; |
| 231 | } |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | static void Mapper19_StateRestore(int version) |
| 236 | { |
| 237 | FixNTAR(); |
| 238 | if(version>=80) |
| 239 | FixCRR(); |
| 240 | } |
| 241 | |
| 242 | static void M19SC(void) |
| 243 | { |
| 244 | if(FSettings.SndRate) |
| 245 | Mapper19_ESI(); |
| 246 | } |
| 247 | |
| 248 | void Mapper19_ESI(void) |
| 249 | { |
| 250 | GameExpSound.RChange=M19SC; |
| 251 | SetWriteHandler(0xf800,0xffff,Mapper19_write); |
| 252 | SetWriteHandler(0x4800,0x4fff,Mapper19_write); |
| 253 | SetReadHandler(0x4800,0x4fff,Namco_Read4800); |
| 254 | } |
| 255 | |
| 256 | void Mapper19_init(void) |
| 257 | { |
| 258 | if(!Mirroring) |
| 259 | { |
| 260 | DoNTARAMROM(0,0xE0); |
| 261 | DoNTARAMROM(1,0xE0); |
| 262 | DoNTARAMROM(2,0xE1); |
| 263 | DoNTARAMROM(3,0xE1); |
| 264 | } |
| 265 | else |
| 266 | { |
| 267 | DoNTARAMROM(0,0xE0); |
| 268 | DoNTARAMROM(2,0xE0); |
| 269 | DoNTARAMROM(1,0xE1); |
| 270 | DoNTARAMROM(3,0xE1); |
| 271 | } |
| 272 | VROM_BANK8(~0); |
| 273 | SetWriteHandler(0x8000,0xffff,Mapper19_write); |
| 274 | SetWriteHandler(0x4020,0x5fff,Mapper19_write); |
| 275 | SetReadHandler(0x4800,0x4fff,Namco_Read4800); |
| 276 | SetReadHandler(0x5000,0x57ff,Namco_Read5000); |
| 277 | SetReadHandler(0x5800,0x5fff,Namco_Read5800); |
| 278 | |
| 279 | MapIRQHook=NamcoIRQHook; |
| 280 | MapStateRestore=Mapper19_StateRestore; |
| 281 | GameExpSound.RChange=M19SC; |
| 282 | if(FSettings.SndRate) |
| 283 | Mapper19_ESI(); |
| 284 | gorfus=0xFF; |
| 285 | } |
| 286 | |