1 /* FCE Ultra - NES/Famicom Emulator
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3 * Copyright notice for this file:
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4 * Copyright (C) 2005-2008 CaH4e3
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6 * This program is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation; either version 2 of the License, or
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9 * (at your option) any later version.
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11 * This program is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with this program; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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20 * CAI Shogakko no Sansu
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25 static uint8 QTAINTRAM[2048];
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26 static writefunc old2007wrap;
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28 static uint16 CHRSIZE = 8192;
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29 static uint16 WRAMSIZE = 8192 + 4096;
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30 static uint8 *CHRRAM=NULL;
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31 static uint8 *WRAM = NULL;
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33 static uint8 IRQa, K4IRQ;
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34 static uint32 IRQLatch, IRQCount;
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36 static uint8 regs[16];
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37 //static uint8 test[8];
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38 static SFORMAT StateRegs[]=
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40 {&IRQCount, 1, "IRQC"},
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41 {&IRQLatch, 1, "IRQL"},
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43 {&K4IRQ, 1, "K4IRQ"},
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48 static void chrSync(void)
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50 setchr4r(0x10,0x0000,regs[5]&1);
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51 setchr4r(0x10,0x1000,0);
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54 static void Sync(void)
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57 // if(regs[0xA]&0x10)
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59 /* setchr1r(0x10,0x0000,(((regs[5]&1))<<2)+0);
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60 setchr1r(0x10,0x0400,(((regs[5]&1))<<2)+1);
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61 setchr1r(0x10,0x0800,(((regs[5]&1))<<2)+2);
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62 setchr1r(0x10,0x0c00,(((regs[5]&1))<<2)+3);
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63 setchr1r(0x10,0x1000,0);
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64 setchr1r(0x10,0x1400,1);
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65 setchr1r(0x10,0x1800,2);
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66 setchr1r(0x10,0x1c00,3);*/
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67 /* setchr1r(0x10,0x0000,(((regs[5]&1))<<2)+0);
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68 setchr1r(0x10,0x0400,(((regs[5]&1))<<2)+1);
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69 setchr1r(0x10,0x0800,(((regs[5]&1))<<2)+2);
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70 setchr1r(0x10,0x0c00,(((regs[5]&1))<<2)+3);
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71 setchr1r(0x10,0x1000,(((regs[5]&1)^1)<<2)+4);
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72 setchr1r(0x10,0x1400,(((regs[5]&1)^1)<<2)+5);
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73 setchr1r(0x10,0x1800,(((regs[5]&1)^1)<<2)+6);
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74 setchr1r(0x10,0x1c00,(((regs[5]&1)^1)<<2)+7);
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80 setchr1r(0x10,0x0000,(((regs[5]&1)^1)<<2)+0);
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81 setchr1r(0x10,0x0400,(((regs[5]&1)^1)<<2)+1);
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82 setchr1r(0x10,0x0800,(((regs[5]&1)^1)<<2)+2);
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83 setchr1r(0x10,0x0c00,(((regs[5]&1)^1)<<2)+3);
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84 setchr1r(0x10,0x1000,(((regs[5]&1))<<2)+4);
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85 setchr1r(0x10,0x1400,(((regs[5]&1))<<2)+5);
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86 setchr1r(0x10,0x1800,(((regs[5]&1))<<2)+6);
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87 setchr1r(0x10,0x1c00,(((regs[5]&1))<<2)+7);
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90 /* setchr1r(1,0x0000,test[0]);
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91 setchr1r(1,0x0400,test[1]);
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92 setchr1r(1,0x0800,test[2]);
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93 setchr1r(1,0x0c00,test[3]);
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94 setchr1r(1,0x1000,test[4]);
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95 setchr1r(1,0x1400,test[5]);
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96 setchr1r(1,0x1800,test[6]);
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97 setchr1r(1,0x1c00,test[7]);
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99 setprg4r(0x10,0x6000,regs[0]&1);
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101 setprg8r(1,0x8000,(regs[2]-0x40));
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103 setprg8r(0,0x8000,(regs[2]&0x3F));
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105 setprg8r(1,0xA000,(regs[3]-0x40));
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107 setprg8r(0,0xA000,(regs[3]&0x3F));
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109 setprg8r(1,0xC000,(regs[4]-0x40));
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111 setprg8r(0,0xC000,(regs[4]&0x3F));
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113 setprg8r(1,0xE000,~0);
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117 /*static DECLFW(TestWrite)
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123 static DECLFW(M190Write)
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125 // FCEU_printf("write %04x:%04x %d, %d\n",A,V,scanline,timestamp);
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126 regs[(A&0x0F00)>>8]=V;
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129 case 0xd600:IRQLatch&=0xFF00;IRQLatch|=V;break;
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130 case 0xd700:IRQLatch&=0x00FF;IRQLatch|=V<<8;break;
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131 case 0xd900:IRQCount=IRQLatch;IRQa=V&2;K4IRQ=V&1;X6502_IRQEnd(FCEU_IQEXT);break;
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132 case 0xd800:IRQa=K4IRQ;X6502_IRQEnd(FCEU_IQEXT);break;
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137 static DECLFR(M190Read)
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139 // FCEU_printf("read %04x:%04x %d, %d\n",A,regs[(A&0x0F00)>>8],scanline,timestamp);
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140 return regs[(A&0x0F00)>>8]+regs[0x0B];
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142 static void VRC5IRQ(int a)
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147 if(IRQCount&0x10000)
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149 X6502_IRQBegin(FCEU_IQEXT);
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150 // IRQCount=IRQLatch;
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155 static void Mapper190_PPU(uint32 A)
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159 setchr4r(0x10,0x0000,QTAINTRAM[A&0x1FFF]&1);
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160 setchr4r(0x10,0x1000,QTAINTRAM[A&0x1FFF]&1);
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166 static DECLFW(M1902007Wrap)
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171 QTAINTRAM[A&0x1FFF]=V;
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178 static void M190Power(void)
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189 setprg4r(0x10,0x7000,2);
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191 old2007wrap=GetWriteHandler(0x2007);
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192 SetWriteHandler(0x2007,0x2007,M1902007Wrap);
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194 SetReadHandler(0x6000,0xFFFF,CartBR);
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195 // SetWriteHandler(0x5000,0x5007,TestWrite);
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196 SetWriteHandler(0x6000,0x7FFF,CartBW);
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197 SetWriteHandler(0x8000,0xFFFF,M190Write);
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198 SetReadHandler(0xDC00,0xDC00,M190Read);
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199 SetReadHandler(0xDD00,0xDD00,M190Read);
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203 static void M190Close(void)
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206 FCEU_gfree(CHRRAM);
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213 static void StateRestore(int version)
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218 void Mapper190_Init(CartInfo *info)
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220 info->Power=M190Power;
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221 info->Close=M190Close;
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222 GameStateRestore=StateRestore;
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224 MapIRQHook=VRC5IRQ;
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225 //PPU_hook=Mapper190_PPU;
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227 CHRRAM=(uint8*)FCEU_gmalloc(CHRSIZE);
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228 SetupCartCHRMapping(0x10,CHRRAM,CHRSIZE,1);
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229 AddExState(CHRRAM, CHRSIZE, 0, "CHRRAM");
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231 WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);
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232 SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);
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233 AddExState(WRAM, WRAMSIZE, 0, "WRAM");
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237 info->SaveGame[0] = WRAM;
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238 info->SaveGameLen[0] = WRAMSIZE - 4096;
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241 AddExState(&StateRegs, ~0, 0, 0);
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