1 /* FCE Ultra - NES/Famicom Emulator
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3 * Copyright notice for this file:
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4 * Copyright (C) 2007 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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23 static uint8 reg, delay, mirr;
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25 static SFORMAT StateRegs[]=
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32 static void Sync(void)
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37 setprg16(0x8000,reg);
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38 setprg8(0xC000,reg << 1);
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40 setprg8(0xE000,(reg << 1) + 1);
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41 setmirror(((mirr&4)>>2)^1);
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44 static DECLFW(M175Write1)
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51 static DECLFW(M175Write2)
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58 static DECLFR(M175Read)
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68 static void M175Power(void)
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70 reg = mirr = delay = 0;
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71 SetReadHandler(0x8000,0xFFFF,M175Read);
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72 SetWriteHandler(0x8000,0x8000,M175Write1);
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73 SetWriteHandler(0xA000,0xA000,M175Write2);
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77 static void StateRestore(int version)
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82 void Mapper175_Init(CartInfo *info)
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84 info->Power=M175Power;
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85 GameStateRestore=StateRestore;
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87 AddExState(&StateRegs, ~0, 0, 0);
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