1 /* FCE Ultra - NES/Famicom Emulator
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3 * Copyright notice for this file:
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4 * Copyright (C) 2005-2011 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 * Super Game (Sugar Softec) protected mapper
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21 * Pocahontas 2 (Unl) [U][!], etc.
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22 * TODO: 9in1 LION KING HANGS!
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30 static uint8 regperm[8][8] =
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32 {0, 1, 2, 3, 4, 5, 6, 7},
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33 {0, 2, 6, 1, 7, 3, 4, 5},
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34 {0, 5, 4, 1, 7, 2, 6, 3}, // unused
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35 {0, 6, 3, 7, 5, 2, 4, 1},
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36 {0, 2, 5, 3, 6, 1, 7, 4},
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37 {0, 1, 2, 3, 4, 5, 6, 7}, // empty
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38 {0, 1, 2, 3, 4, 5, 6, 7}, // empty
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39 {0, 1, 2, 3, 4, 5, 6, 7}, // empty
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42 static uint8 adrperm[8][8] =
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44 {0, 1, 2, 3, 4, 5, 6, 7},
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45 {3, 2, 0, 4, 1, 5, 6, 7},
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46 {0, 1, 2, 3, 4, 5, 6, 7}, // unused
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47 {5, 0, 1, 2, 3, 7, 6, 4},
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48 {3, 1, 0, 5, 2, 4, 6, 7},
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49 {0, 1, 2, 3, 4, 5, 6, 7}, // empty
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50 {0, 1, 2, 3, 4, 5, 6, 7}, // empty
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51 {0, 1, 2, 3, 4, 5, 6, 7}, // empty
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54 static void UNL8237CW(uint32 A, uint8 V)
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57 setchr1(A,((EXPREGS[1]&0xc)<<6)|(V&0x7F)|((EXPREGS[1]&0x20)<<2));
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59 setchr1(A,((EXPREGS[1]&0xc)<<6)|V);
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62 static void UNL8237PW(uint32 A, uint8 V)
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66 uint8 sbank = (EXPREGS[1]&0x10);
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69 uint8 bank = ((EXPREGS[1]&3)<<4)|(EXPREGS[0]&0x7)|(sbank>>1);
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71 setprg32(0x8000,bank>>1);
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74 setprg16(0x8000,bank);
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75 setprg16(0xC000,bank);
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79 setprg8(A,((EXPREGS[1]&3)<<5)|(V&0x0F)|sbank);
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85 uint8 bank = ((EXPREGS[1]&3)<<4)|(EXPREGS[0]&0xF);
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87 setprg32(0x8000,bank>>1);
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90 setprg16(0x8000,bank);
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91 setprg16(0xC000,bank);
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95 setprg8(A,((EXPREGS[1]&3)<<5)|(V&0x1F));
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99 static void UNL8237ACW(uint32 A, uint8 V)
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101 if(EXPREGS[0]&0x40)
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102 setchr1(A,((EXPREGS[1]&0xE)<<7)|(V&0x7F)|((EXPREGS[1]&0x20)<<2));
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104 setchr1(A,((EXPREGS[1]&0xE)<<7)|V);
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107 static void UNL8237APW(uint32 A, uint8 V)
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109 if(EXPREGS[0]&0x40)
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111 uint8 sbank = (EXPREGS[1]&0x10);
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112 if(EXPREGS[0]&0x80)
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114 uint8 bank = ((EXPREGS[1]&3)<<4)|((EXPREGS[1]&8)<<3)|(EXPREGS[0]&0x7)|(sbank>>1);
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115 if(EXPREGS[0]&0x20)
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116 setprg32(0x8000,bank>>1);
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119 setprg16(0x8000,bank);
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120 setprg16(0xC000,bank);
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124 setprg8(A,((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x0F)|sbank);
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128 if(EXPREGS[0]&0x80)
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130 uint8 bank = ((EXPREGS[1]&3)<<4)|((EXPREGS[1]&8)<<3)|(EXPREGS[0]&0xF);
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131 if(EXPREGS[0]&0x20)
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132 setprg32(0x8000,bank>>1);
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135 setprg16(0x8000,bank);
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136 setprg16(0xC000,bank);
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140 setprg8(A,((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x1F));
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143 static DECLFW(UNL8237Write)
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146 uint8 adr = adrperm[EXPREGS[2]][((A>>12)&6)|(A&1)];
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147 uint16 addr = (adr & 1)|((adr & 6)<<12)|0x8000;
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151 dat = (dat & 0xC0)|(regperm[EXPREGS[2]][dat & 7]);
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152 MMC3_CMDWrite(addr,dat);
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155 MMC3_IRQWrite(addr,dat);
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158 static DECLFW(UNL8237ExWrite)
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162 case 0x5000: EXPREGS[0]=V; FixMMC3PRG(MMC3_cmd); break;
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163 case 0x5001: EXPREGS[1]=V; FixMMC3PRG(MMC3_cmd); FixMMC3CHR(MMC3_cmd); break;
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164 case 0x5007: EXPREGS[2]=V; break;
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168 static void UNL8237Power(void)
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170 EXPREGS[0]=EXPREGS[2]=0;
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173 SetWriteHandler(0x8000,0xFFFF,UNL8237Write);
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174 SetWriteHandler(0x5000,0x7FFF,UNL8237ExWrite);
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177 void UNL8237_Init(CartInfo *info)
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179 GenMMC3_Init(info, 256, 256, 0, 0);
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182 info->Power=UNL8237Power;
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183 AddExState(EXPREGS, 3, 0, "EXPR");
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184 AddExState(&cmdin, 1, 0, "CMDIN");
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187 void UNL8237A_Init(CartInfo *info)
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189 GenMMC3_Init(info, 256, 256, 0, 0);
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192 info->Power=UNL8237Power;
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193 AddExState(EXPREGS, 3, 0, "EXPR");
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194 AddExState(&cmdin, 1, 0, "CMDIN");
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