X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=boards%2Fbmc42in1r.c;h=6c1f2096e6d22c7e3d73e66c803ff7e78dbc99ed;hb=refs%2Fheads%2Fmaster;hp=8084847286260bcc02a31ecec56685b003ca9c92;hpb=e2d0dd92bfad989cce4270fc0ac5a712476c7c50;p=fceu.git diff --git a/boards/bmc42in1r.c b/boards/bmc42in1r.c index 8084847..6c1f209 100644 --- a/boards/bmc42in1r.c +++ b/boards/bmc42in1r.c @@ -1,87 +1,94 @@ -/* 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 - * - * BMC 42-in-1 reset switch - */ - -#include "mapinc.h" - -static uint8 hrd_sw; -static uint8 latche; -static SFORMAT StateRegs[]= -{ - {&latche, 1, "LATCHE"}, - {&hrd_sw, 1, "HRDSW"}, - {0} -}; - -static void Sync(void) -{ - if(!(latche&0x20)) - setprg32r(hrd_sw,0x8000,(latche>>1)&0x0f); - else - { - setprg16r(hrd_sw,0x8000,latche&0x1f); - setprg16r(hrd_sw,0xC000,latche&0x1f); - } - switch((latche>>6)&3) - { - case 0: setmirrorw(0,0,0,1); break; - case 1: setmirror(MI_V); break; - case 2: setmirror(MI_H); break; - case 3: setmirror(MI_1); break; - } -} - -static DECLFW(BMC42in1rWrite) -{ - latche=V; - Sync(); -} - -static void BMC42in1rReset(void) -{ - hrd_sw^=1; - Sync(); -} - -static void BMC42in1rPower(void) -{ - latche=0x00; - hrd_sw=0; - setchr8(0); - Sync(); - SetWriteHandler(0x8000,0xFFFF,BMC42in1rWrite); - SetReadHandler(0x8000,0xFFFF,CartBR); -} - -static void StateRestore(int version) -{ - Sync(); -} - -void BMC42in1r_Init(CartInfo *info) -{ - info->Power=BMC42in1rPower; - info->Reset=BMC42in1rReset; - AddExState(&StateRegs, ~0, 0, 0); - GameStateRestore=StateRestore; -} - - +/* FCE Ultra - NES/Famicom Emulator + * + * Copyright notice for this file: + * Copyright (C) 2005 CaH4e3 + * Copyright (C) 2009 qeed + * + * 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 + * + * BMC 42-in-1 "reset switch" + "select switch" + * + */ + +#include "mapinc.h" + +static uint8 isresetbased = 0; +static uint8 latche[2], reset; +static SFORMAT StateRegs[]= +{ + {&reset, 1, "RST"}, + {latche, 2, "LATC"}, + {0} +}; + +static void Sync(void) +{ + uint8 bank; + if(isresetbased) + bank = (latche[0]&0x1f)|(reset<<5)|((latche[1]&1)<<6); + else + bank = (latche[0]&0x1f)|((latche[0]&0x80)>>2)|((latche[1]&1)<<6); + if(!(latche[0] & 0x20)) + setprg32(0x8000,bank >> 1); + else + { + setprg16(0x8000,bank); + setprg16(0xC000,bank); + } + setmirror((latche[0]>>6)&1); + setchr8(0); +} + +static DECLFW(M226Write) +{ + latche[A & 1] = V; + Sync(); +} + +static void M226Power(void) +{ + latche[0] = latche[1] = reset = 0; + Sync(); + SetWriteHandler(0x8000,0xFFFF,M226Write); + SetReadHandler(0x8000,0xFFFF,CartBR); +} + +static void StateRestore(int version) +{ + Sync(); +} + +void Mapper226_Init(CartInfo *info) +{ + isresetbased = 0; + info->Power=M226Power; + AddExState(&StateRegs, ~0, 0, 0); + GameStateRestore=StateRestore; +} + +static void BMC42in1Reset(void) +{ + reset ^= 1; + Sync(); +} + +void BMC42in1r_Init(CartInfo *info) +{ + isresetbased = 1; + info->Power=M226Power; + info->Reset=BMC42in1Reset; + AddExState(&StateRegs, ~0, 0, 0); + GameStateRestore=StateRestore; +}