| 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #include "mapinc.h" |
| 22 | |
| 23 | #define vrctemp mapbyte1[0] |
| 24 | static uint8 indox; |
| 25 | |
| 26 | #include "emu2413.h" |
| 27 | |
| 28 | static int acount=0; |
| 29 | |
| 30 | static OPLL *VRC7Sound=NULL; |
| 31 | static int dwave=0; |
| 32 | |
| 33 | void DoVRC7Sound(void) |
| 34 | { |
| 35 | int32 z,a; |
| 36 | |
| 37 | if(FSettings.soundq>=1) return; |
| 38 | z=((SOUNDTS<<16)/soundtsinc)>>4; |
| 39 | a=z-dwave; |
| 40 | |
| 41 | moocow(VRC7Sound, &Wave[dwave], a, 1); |
| 42 | |
| 43 | dwave+=a; |
| 44 | } |
| 45 | |
| 46 | void UpdateOPLNEO(int32 *Wave, int Count) |
| 47 | { |
| 48 | moocow(VRC7Sound, Wave, Count, 4); |
| 49 | } |
| 50 | |
| 51 | void UpdateOPL(int Count) |
| 52 | { |
| 53 | int32 z,a; |
| 54 | |
| 55 | z=((SOUNDTS<<16)/soundtsinc)>>4; |
| 56 | a=z-dwave; |
| 57 | |
| 58 | if(VRC7Sound && a) |
| 59 | moocow(VRC7Sound, &Wave[dwave], a, 1); |
| 60 | |
| 61 | dwave=0; |
| 62 | } |
| 63 | |
| 64 | static INLINE void DaMirror(int V) |
| 65 | { |
| 66 | int salpo[4]={MI_V,MI_H,MI_0,MI_1}; |
| 67 | setmirror(salpo[V&3]); |
| 68 | } |
| 69 | |
| 70 | DECLFW(Mapper85_write) |
| 71 | { |
| 72 | A|=(A&8)<<1; |
| 73 | |
| 74 | if(A>=0xa000 && A<=0xDFFF) |
| 75 | { |
| 76 | // printf("$%04x, $%04x\n",X.PC,A); |
| 77 | A&=0xF010; |
| 78 | { |
| 79 | int x=((A>>4)&1)|((A-0xA000)>>11); |
| 80 | mapbyte3[x]=V; |
| 81 | setchr1(x<<10,V); |
| 82 | } |
| 83 | } |
| 84 | else if(A==0x9030) |
| 85 | { |
| 86 | if(FSettings.SndRate) |
| 87 | { |
| 88 | OPLL_writeReg(VRC7Sound, indox, V); |
| 89 | GameExpSound.Fill=UpdateOPL; |
| 90 | GameExpSound.NeoFill=UpdateOPLNEO; |
| 91 | } |
| 92 | } |
| 93 | else switch(A&0xF010) |
| 94 | { |
| 95 | case 0x8000:mapbyte2[0]=V;setprg8(0x8000,V);break; |
| 96 | case 0x8010:mapbyte2[1]=V;setprg8(0xa000,V);break; |
| 97 | case 0x9000:mapbyte2[2]=V;setprg8(0xc000,V);break; |
| 98 | case 0x9010:indox=V;break; |
| 99 | case 0xe000:mapbyte2[3]=V;DaMirror(V);break; |
| 100 | case 0xE010:IRQLatch=V; |
| 101 | X6502_IRQEnd(FCEU_IQEXT); |
| 102 | break; |
| 103 | case 0xF000:IRQa=V&2; |
| 104 | vrctemp=V&1; |
| 105 | if(V&2) {IRQCount=IRQLatch;} |
| 106 | acount=0; |
| 107 | X6502_IRQEnd(FCEU_IQEXT); |
| 108 | break; |
| 109 | case 0xf010:if(vrctemp) IRQa=1; |
| 110 | else IRQa=0; |
| 111 | X6502_IRQEnd(FCEU_IQEXT); |
| 112 | break; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | static void KonamiIRQHook(int a) |
| 117 | { |
| 118 | #define ACBOO 341 |
| 119 | // #define ACBOO ((227*2)+1) |
| 120 | if(IRQa) |
| 121 | { |
| 122 | acount+=a*3; |
| 123 | |
| 124 | if(acount>=ACBOO) |
| 125 | { |
| 126 | doagainbub:acount-=ACBOO; |
| 127 | IRQCount++; |
| 128 | if(IRQCount&0x100) {X6502_IRQBegin(FCEU_IQEXT);IRQCount=IRQLatch;} |
| 129 | if(acount>=ACBOO) goto doagainbub; |
| 130 | } |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | void Mapper85_StateRestore(int version) |
| 135 | { |
| 136 | int x; |
| 137 | |
| 138 | if(version<7200) |
| 139 | { |
| 140 | for(x=0;x<8;x++) |
| 141 | mapbyte3[x]=CHRBankList[x]; |
| 142 | for(x=0;x<3;x++) |
| 143 | mapbyte2[x]=PRGBankList[x]; |
| 144 | mapbyte2[3]=(Mirroring<0x10)?Mirroring:Mirroring-0xE; |
| 145 | } |
| 146 | |
| 147 | for(x=0;x<8;x++) |
| 148 | setchr1(x*0x400,mapbyte3[x]); |
| 149 | for(x=0;x<3;x++) |
| 150 | setprg8(0x8000+x*8192,mapbyte2[x]); |
| 151 | DaMirror(mapbyte2[3]); |
| 152 | //LoadOPL(); |
| 153 | } |
| 154 | |
| 155 | static void M85SC(void) |
| 156 | { |
| 157 | if(VRC7Sound) |
| 158 | OPLL_set_rate(VRC7Sound, FSettings.SndRate); |
| 159 | } |
| 160 | |
| 161 | static void M85SKill(void) |
| 162 | { |
| 163 | if(VRC7Sound) |
| 164 | OPLL_delete(VRC7Sound); |
| 165 | VRC7Sound=NULL; |
| 166 | } |
| 167 | |
| 168 | static void VRC7SI(void) |
| 169 | { |
| 170 | GameExpSound.RChange=M85SC; |
| 171 | GameExpSound.Kill=M85SKill; |
| 172 | |
| 173 | VRC7Sound=OPLL_new(3579545, FSettings.SndRate?FSettings.SndRate:44100); |
| 174 | OPLL_reset(VRC7Sound); |
| 175 | OPLL_reset(VRC7Sound); |
| 176 | } |
| 177 | |
| 178 | void NSFVRC7_Init(void) |
| 179 | { |
| 180 | SetWriteHandler(0x9010,0x901F,Mapper85_write); |
| 181 | SetWriteHandler(0x9030,0x903F,Mapper85_write); |
| 182 | VRC7SI(); |
| 183 | } |
| 184 | |
| 185 | void Mapper85_init(void) |
| 186 | { |
| 187 | MapIRQHook=KonamiIRQHook; |
| 188 | SetWriteHandler(0x8000,0xffff,Mapper85_write); |
| 189 | GameStateRestore=Mapper85_StateRestore; |
| 190 | if(!VROM_size) |
| 191 | SetupCartCHRMapping(0, CHRRAM, 8192, 1); |
| 192 | //AddExState(VRC7Instrument, 16, 0, "VC7I"); |
| 193 | //AddExState(VRC7Chan, sizeof(VRC7Chan), 0, "V7CH"); |
| 194 | VRC7SI(); |
| 195 | } |