| 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 void AYSound(int Count); |
| 24 | //static void AYSoundHQ(void); |
| 25 | static void DoAYSQ(int x); |
| 26 | //static void DoAYSQHQ(int x); |
| 27 | |
| 28 | #define sunselect mapbyte1[0] |
| 29 | #define sungah mapbyte1[1] |
| 30 | static uint8 sunindex; |
| 31 | |
| 32 | static DECLFW(SUN5BWRAM) |
| 33 | { |
| 34 | if((sungah&0xC0)==0xC0) |
| 35 | (WRAM-0x6000)[A]=V; |
| 36 | } |
| 37 | |
| 38 | static DECLFR(SUN5AWRAM) |
| 39 | { |
| 40 | if((sungah&0xC0)==0x40) |
| 41 | return X.DB; |
| 42 | return CartBR(A); |
| 43 | } |
| 44 | |
| 45 | static DECLFW(Mapper69_SWL) |
| 46 | { |
| 47 | sunindex=V%14; |
| 48 | } |
| 49 | |
| 50 | static DECLFW(Mapper69_SWH) |
| 51 | { |
| 52 | int x; |
| 53 | GameExpSound.Fill=AYSound; |
| 54 | GameExpSound.HiFill=0;//AYSoundHQ; |
| 55 | if(FSettings.SndRate); |
| 56 | switch(sunindex) |
| 57 | { |
| 58 | case 0: |
| 59 | case 1: |
| 60 | case 8:/*if(FSettings.soundq>=1) DoAYSQHQ(0); else*/ DoAYSQ(0);break; |
| 61 | case 2: |
| 62 | case 3: |
| 63 | case 9:/*if(FSettings.soundq>=1) DoAYSQHQ(1); else*/ DoAYSQ(1);break; |
| 64 | case 4: |
| 65 | case 5: |
| 66 | case 10:/*if(FSettings.soundq>=1) DoAYSQHQ(2); else*/ DoAYSQ(2);break; |
| 67 | case 7: |
| 68 | for(x=0;x<2;x++) |
| 69 | /*if(FSettings.soundq>=1) DoAYSQHQ(x); else*/ DoAYSQ(x); |
| 70 | break; |
| 71 | } |
| 72 | MapperExRAM[sunindex]=V; |
| 73 | } |
| 74 | |
| 75 | static DECLFW(Mapper69_write) |
| 76 | { |
| 77 | switch(A&0xE000) |
| 78 | { |
| 79 | case 0x8000:sunselect=V;break; |
| 80 | case 0xa000: |
| 81 | sunselect&=0xF; |
| 82 | if(sunselect<=7) |
| 83 | VROM_BANK1(sunselect<<10,V); |
| 84 | else |
| 85 | switch(sunselect&0x0f) |
| 86 | { |
| 87 | case 8: |
| 88 | sungah=V; |
| 89 | if(V&0x40) |
| 90 | { |
| 91 | if(V&0x80) // Select WRAM |
| 92 | setprg8r(0x10,0x6000,0); |
| 93 | } |
| 94 | else |
| 95 | setprg8(0x6000,V); |
| 96 | break; |
| 97 | case 9:ROM_BANK8(0x8000,V);break; |
| 98 | case 0xa:ROM_BANK8(0xa000,V);break; |
| 99 | case 0xb:ROM_BANK8(0xc000,V);break; |
| 100 | case 0xc: |
| 101 | switch(V&3) |
| 102 | { |
| 103 | case 0:MIRROR_SET2(1);break; |
| 104 | case 1:MIRROR_SET2(0);break; |
| 105 | case 2:onemir(0);break; |
| 106 | case 3:onemir(1);break; |
| 107 | } |
| 108 | break; |
| 109 | case 0xd:IRQa=V;X6502_IRQEnd(FCEU_IQEXT);break; |
| 110 | case 0xe:IRQCount&=0xFF00;IRQCount|=V;X6502_IRQEnd(FCEU_IQEXT);break; |
| 111 | case 0xf:IRQCount&=0x00FF;IRQCount|=V<<8;X6502_IRQEnd(FCEU_IQEXT);break; |
| 112 | } |
| 113 | break; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | static int32 vcount[3]; |
| 118 | static int32 dcount[3]; |
| 119 | static int CAYBC[3]; |
| 120 | |
| 121 | static void DoAYSQ(int x) |
| 122 | { |
| 123 | int32 freq=((MapperExRAM[x<<1]|((MapperExRAM[(x<<1)+1]&15)<<8))+1)<<(4+17); |
| 124 | int32 amp=(MapperExRAM[0x8+x]&15)<<2; |
| 125 | int32 start,end; |
| 126 | int V; |
| 127 | |
| 128 | amp+=amp>>1; |
| 129 | |
| 130 | start=CAYBC[x]; |
| 131 | end=(SOUNDTS<<16)/soundtsinc; |
| 132 | if(end<=start) return; |
| 133 | CAYBC[x]=end; |
| 134 | |
| 135 | if(amp) |
| 136 | if(!(MapperExRAM[0x7]&(1<<x))) |
| 137 | for(V=start;V<end;V++) |
| 138 | { |
| 139 | if(dcount[x]) |
| 140 | Wave[V>>4]+=amp; |
| 141 | vcount[x]-=nesincsize; |
| 142 | while(vcount[x]<=0) |
| 143 | { |
| 144 | dcount[x]^=1; |
| 145 | vcount[x]+=freq; |
| 146 | } |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | #if 0 |
| 151 | static void DoAYSQHQ(int x) |
| 152 | { |
| 153 | int32 V; |
| 154 | int32 freq=((MapperExRAM[x<<1]|((MapperExRAM[(x<<1)+1]&15)<<8))+1)<<4; |
| 155 | int32 amp=(MapperExRAM[0x8+x]&15)<<6; |
| 156 | |
| 157 | amp+=amp>>1; |
| 158 | |
| 159 | if(!(MapperExRAM[0x7]&(1<<x))) |
| 160 | { |
| 161 | for(V=CAYBC[x];V<SOUNDTS;V++) |
| 162 | { |
| 163 | if(dcount[x]) |
| 164 | WaveHi[V]+=amp; |
| 165 | vcount[x]--; |
| 166 | if(vcount[x]<=0) |
| 167 | { |
| 168 | dcount[x]^=1; |
| 169 | vcount[x]=freq; |
| 170 | } |
| 171 | } |
| 172 | } |
| 173 | CAYBC[x]=SOUNDTS; |
| 174 | } |
| 175 | #endif |
| 176 | |
| 177 | static void AYSound(int Count) |
| 178 | { |
| 179 | int x; |
| 180 | DoAYSQ(0); |
| 181 | DoAYSQ(1); |
| 182 | DoAYSQ(2); |
| 183 | for(x=0;x<3;x++) |
| 184 | CAYBC[x]=Count; |
| 185 | } |
| 186 | |
| 187 | #if 0 |
| 188 | static void AYSoundHQ(void) |
| 189 | { |
| 190 | DoAYSQHQ(0); |
| 191 | DoAYSQHQ(1); |
| 192 | DoAYSQHQ(2); |
| 193 | } |
| 194 | #endif |
| 195 | |
| 196 | static void AYHiSync(int32 ts) |
| 197 | { |
| 198 | int x; |
| 199 | |
| 200 | for(x=0;x<3;x++) |
| 201 | CAYBC[x]=ts; |
| 202 | } |
| 203 | |
| 204 | static void FP_FASTAPASS(1) SunIRQHook(int a) |
| 205 | { |
| 206 | if(IRQa) |
| 207 | { |
| 208 | IRQCount-=a; |
| 209 | if(IRQCount<=0) |
| 210 | {X6502_IRQBegin(FCEU_IQEXT);IRQa=0;IRQCount=0xFFFF;} |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | void Mapper69_StateRestore(int version) |
| 215 | { |
| 216 | if(mapbyte1[1]&0x40) |
| 217 | { |
| 218 | if(mapbyte1[1]&0x80) // Select WRAM |
| 219 | setprg8r(0x10,0x6000,0); |
| 220 | } |
| 221 | else |
| 222 | setprg8(0x6000,mapbyte1[1]); |
| 223 | } |
| 224 | |
| 225 | void Mapper69_ESI(void) |
| 226 | { |
| 227 | GameExpSound.RChange=Mapper69_ESI; |
| 228 | GameExpSound.HiSync=AYHiSync; |
| 229 | memset(dcount,0,sizeof(dcount)); |
| 230 | memset(vcount,0,sizeof(vcount)); |
| 231 | memset(CAYBC,0,sizeof(CAYBC)); |
| 232 | } |
| 233 | |
| 234 | void NSFAY_Init(void) |
| 235 | { |
| 236 | sunindex=0; |
| 237 | SetWriteHandler(0xc000,0xdfff,Mapper69_SWL); |
| 238 | SetWriteHandler(0xe000,0xffff,Mapper69_SWH); |
| 239 | Mapper69_ESI(); |
| 240 | } |
| 241 | |
| 242 | void Mapper69_init(void) |
| 243 | { |
| 244 | sunindex=0; |
| 245 | |
| 246 | SetupCartPRGMapping(0x10,WRAM,8192,1); |
| 247 | |
| 248 | SetWriteHandler(0x8000,0xbfff,Mapper69_write); |
| 249 | SetWriteHandler(0xc000,0xdfff,Mapper69_SWL); |
| 250 | SetWriteHandler(0xe000,0xffff,Mapper69_SWH); |
| 251 | SetWriteHandler(0x6000,0x7fff,SUN5BWRAM); |
| 252 | SetReadHandler(0x6000,0x7fff,SUN5AWRAM); |
| 253 | Mapper69_ESI(); |
| 254 | MapIRQHook=SunIRQHook; |
| 255 | MapStateRestore=Mapper69_StateRestore; |
| 256 | } |
| 257 | |