X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2Ft-262.c;fp=boards%2Ft-262.c;h=fe9b446044f85b39b0a28657b05577b359557084;hp=0000000000000000000000000000000000000000;hb=e2d0dd92bfad989cce4270fc0ac5a712476c7c50;hpb=971a1d07d2f5b5a6f991ed5712275c04b933734f diff --git a/boards/t-262.c b/boards/t-262.c new file mode 100644 index 0000000..fe9b446 --- /dev/null +++ b/boards/t-262.c @@ -0,0 +1,83 @@ +/* FCE Ultra - NES/Famicom Emulator + * + * Copyright notice for this file: + * Copyright (C) 2005 CaH4e3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "mapinc.h" + +static uint16 addrreg; +static uint8 datareg; +static uint8 busy; +static SFORMAT StateRegs[]= +{ + {&addrreg, 2, "ADDRREG"}, + {&datareg, 1, "DATAREG"}, + {&busy, 1, "BUSY"}, + {0} +}; + +static void Sync(void) +{ + setprg16(0x8000,(datareg&7)|((addrreg&0x60)>>2)|((addrreg&0x100)>>3)); + setprg16(0xC000,7|((addrreg&0x60)>>2)|((addrreg&0x100)>>3)); + setmirror(((addrreg&2)>>1)^1); +} + +static DECLFW(BMCT262Write) +{ + if(busy||(A==0x8000)) + datareg=V; + else + { + addrreg=A; + busy=1; + } + Sync(); +} + +static void BMCT262Power(void) +{ + setchr8(0); + SetWriteHandler(0x8000,0xFFFF,BMCT262Write); + SetReadHandler(0x8000,0xFFFF,CartBR); + busy=0; + addrreg=0; + datareg=0; + Sync(); +} + +static void BMCT262Reset(void) +{ + busy=0; + addrreg=0; + datareg=0; + Sync(); +} + +static void BMCT262Restore(int version) +{ + Sync(); +} + +void BMCT262_Init(CartInfo *info) +{ + info->Power=BMCT262Power; + info->Reset=BMCT262Reset; + GameStateRestore=BMCT262Restore; + AddExState(&StateRegs, ~0, 0, 0); +}