1 /* FCE Ultra - NES/Famicom Emulator
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3 * Copyright notice for this file:
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4 * Copyright (C) 2005 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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23 static uint16 cmdreg;
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24 static uint8 invalid_data;
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25 static SFORMAT StateRegs[]=
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27 {&invalid_data, 1, "INVD"},
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28 {&cmdreg, 2, "CMDREG"},
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32 static void Sync(void)
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34 setprg16r((cmdreg&0x060)>>5,0x8000,(cmdreg&0x01C)>>2);
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35 setprg16r((cmdreg&0x060)>>5,0xC000,(cmdreg&0x200)?(~0):0);
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36 setmirror(((cmdreg&2)>>1)^1);
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39 static DECLFR(UNL8157Read)
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41 if(invalid_data&&cmdreg&0x100)
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47 static DECLFW(UNL8157Write)
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53 static void UNL8157Power(void)
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56 SetWriteHandler(0x8000,0xFFFF,UNL8157Write);
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57 SetReadHandler(0x8000,0xFFFF,UNL8157Read);
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63 static void UNL8157Reset(void)
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70 static void UNL8157Restore(int version)
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75 void UNL8157_Init(CartInfo *info)
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77 info->Power=UNL8157Power;
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78 info->Reset=UNL8157Reset;
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79 GameStateRestore=UNL8157Restore;
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80 AddExState(&StateRegs, ~0, 0, 0);
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