X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2F57.c;fp=boards%2F57.c;h=ba5de0b3eef193f9a6083f6a11d2222aa422ca93;hp=693677db4b31f0f8adafd64f4c614264a889ed74;hb=386f5371eb984fb9c2860c83e740890a75cd45c1;hpb=eec2623f6183dd0f9494b99065a16bf90f2a1ccf diff --git a/boards/57.c b/boards/57.c index 693677d..ba5de0b 100644 --- a/boards/57.c +++ b/boards/57.c @@ -1,93 +1,92 @@ -/* 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 uint8 prg_reg; -static uint8 chr_reg; -static uint8 hrd_flag; - -static SFORMAT StateRegs[]= -{ - {&prg_reg, 1, "PRG"}, - {&chr_reg, 1, "CHR"}, - {0} -}; - -static void Sync(void) -{ - if(prg_reg&0x80) - setprg32(0x8000,prg_reg>>6); - else - { - setprg16(0x8000,(prg_reg>>5)&3); - setprg16(0xC000,(prg_reg>>5)&3); - } - setmirror((prg_reg&8)>>3); - setchr8((chr_reg&3)|(prg_reg&7)|((prg_reg&0x10)>>1)); -} - -static DECLFR(M57Read) -{ - return hrd_flag; -} - -static DECLFW(M57Write) -{ - if((A&0x8800)==0x8800) - prg_reg=V; - else - chr_reg=V; - Sync(); -} - -static void M57Power(void) -{ - prg_reg=0; - chr_reg=0; - hrd_flag=0; - SetReadHandler(0x8000,0xFFFF,CartBR); - SetWriteHandler(0x8000,0xFFFF,M57Write); - SetReadHandler(0x6000,0x6000,M57Read); - Sync(); -} - -static void M57Reset() -{ - if(hrd_flag==3) - hrd_flag=0; - else - hrd_flag++; - FCEU_printf("Select Register = %02x\n",hrd_flag); -} - -static void StateRestore(int version) -{ - Sync(); -} - -void Mapper57_Init(CartInfo *info) -{ - info->Power=M57Power; - info->Reset=M57Reset; - GameStateRestore=StateRestore; - AddExState(&StateRegs, ~0, 0, 0); -} +/* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#include "mapinc.h" + +static uint8 prg_reg; +static uint8 chr_reg; +static uint8 hrd_flag; + +static SFORMAT StateRegs[]= +{ + {&hrd_flag, 1, "DIPSW"}, + {&prg_reg, 1, "PRG"}, + {&chr_reg, 1, "CHR"}, + {0} +}; + +static void Sync(void) +{ + if(prg_reg&0x80) + setprg32(0x8000,prg_reg>>6); + else + { + setprg16(0x8000,(prg_reg>>5)&3); + setprg16(0xC000,(prg_reg>>5)&3); + } + setmirror((prg_reg&8)>>3); + setchr8((chr_reg&3)|(prg_reg&7)|((prg_reg&0x10)>>1)); +} + +static DECLFR(M57Read) +{ + return hrd_flag; +} + +static DECLFW(M57Write) +{ + if((A&0x8800)==0x8800) + prg_reg=V; + else + chr_reg=V; + Sync(); +} + +static void M57Power(void) +{ + prg_reg=0; + chr_reg=0; + hrd_flag=0; + SetReadHandler(0x8000,0xFFFF,CartBR); + SetWriteHandler(0x8000,0xFFFF,M57Write); + SetReadHandler(0x6000,0x6000,M57Read); + Sync(); +} + +static void M57Reset() +{ + hrd_flag++; + hrd_flag&=3; + FCEU_printf("Select Register = %02x\n",hrd_flag); +} + +static void StateRestore(int version) +{ + Sync(); +} + +void Mapper57_Init(CartInfo *info) +{ + info->Power=M57Power; + info->Reset=M57Reset; + GameStateRestore=StateRestore; + AddExState(&StateRegs, ~0, 0, 0); +}