X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2Fbandai.c;fp=boards%2Fbandai.c;h=8468aad635873f0e790f90cb925ddb8f537fed66;hp=0000000000000000000000000000000000000000;hb=386f5371eb984fb9c2860c83e740890a75cd45c1;hpb=eec2623f6183dd0f9494b99065a16bf90f2a1ccf diff --git a/boards/bandai.c b/boards/bandai.c new file mode 100644 index 0000000..8468aad --- /dev/null +++ b/boards/bandai.c @@ -0,0 +1,176 @@ +/* FCE Ultra - NES/Famicom Emulator + * + * Copyright notice for this file: + * Copyright (C) 2007 CaH4e3 + * Copyright (C) 2011 FCEUX team + * + * 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 + * + * Bandai mappers + * + */ + +//Famicom Jump 2 should get transformed to m153 +//All other games are not supporting EEPROM saving right now. +//We may need to distinguish between 16 and 159 in order to know the EEPROM configuration. +//Until then, we just return 0x00 from the EEPROM read + +#include "mapinc.h" + +static uint8 reg[16], is153; +static uint8 IRQa; +static int16 IRQCount, IRQLatch; + +static uint8 *WRAM=NULL; +static uint32 WRAMSIZE; + +static SFORMAT StateRegs[]= +{ + {reg, 16, "REGS"}, + {&IRQa, 1, "IRQA"}, + {&IRQCount, 2, "IRQC"}, + {&IRQLatch, 2, "IRQL"}, // need for Famicom Jump II - Saikyou no 7 Nin (J) [!] + {0} +}; + +static void BandaiIRQHook(int a) +{ + if(IRQa) + { + IRQCount -= a; + if(IRQCount<0) + { + X6502_IRQBegin(FCEU_IQEXT); + IRQa = 0; + IRQCount = -1; + } + } +} + +static void BandaiSync(void) +{ + if(is153) + { + int base=(reg[0]&1)<<4; + setchr8(0); + setprg16(0x8000,(reg[8]&0x0F)|base); + setprg16(0xC000,0x0F|base); + } + else + { + int i; + for(i=0; i<8; i++) setchr1(i<<10,reg[i]); + setprg16(0x8000,reg[8]); + setprg16(0xC000,~0); + } + switch(reg[9]&3) + { + case 0: setmirror(MI_V); break; + case 1: setmirror(MI_H); break; + case 2: setmirror(MI_0); break; + case 3: setmirror(MI_1); break; + } +} + +static DECLFW(BandaiWrite) +{ + A&=0x0F; + if(A<0x0A) + { + reg[A&0x0F]=V; + BandaiSync(); + } + else + switch(A) + { + case 0x0A: X6502_IRQEnd(FCEU_IQEXT); IRQa=V&1; IRQCount=IRQLatch; break; + case 0x0B: IRQLatch&=0xFF00; IRQLatch|=V; break; + case 0x0C: IRQLatch&=0xFF; IRQLatch|=V<<8; break; + case 0x0D: break;// Serial EEPROM control port + } +} + +DECLFR(BandaiRead) +{ + return 0; +} + +static void BandaiPower(void) +{ + BandaiSync(); + SetReadHandler(0x8000,0xFFFF,CartBR); + SetWriteHandler(0x6000,0xFFFF,BandaiWrite); + SetReadHandler(0x6000,0x7FFF,BandaiRead); +} + +static void M153Power(void) +{ + BandaiSync(); + setprg8r(0x10,0x6000,0); + SetReadHandler(0x6000,0x7FFF,CartBR); + SetWriteHandler(0x6000,0x7FFF,CartBW); + SetReadHandler(0x8000,0xFFFF,CartBR); + SetWriteHandler(0x8000,0xFFFF,BandaiWrite); +} + + +static void M153Close(void) +{ + if(WRAM) + FCEU_gfree(WRAM); + WRAM=NULL; +} + +static void StateRestore(int version) +{ + BandaiSync(); +} + +void Mapper16_Init(CartInfo *info) +{ + is153=0; + info->Power=BandaiPower; + MapIRQHook=BandaiIRQHook; + GameStateRestore=StateRestore; + AddExState(&StateRegs, ~0, 0, 0); +} + +void Mapper159_Init(CartInfo *info) +{ + Mapper16_Init(info); +} + + +void Mapper153_Init(CartInfo *info) +{ + is153=1; + info->Power=M153Power; + info->Close=M153Close; + MapIRQHook=BandaiIRQHook; + + WRAMSIZE=8192; + WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE); + SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1); + AddExState(WRAM, WRAMSIZE, 0, "WRAM"); + + if(info->battery) + { + info->SaveGame[0]=WRAM; + info->SaveGameLen[0]=WRAMSIZE; + } + + GameStateRestore=StateRestore; + AddExState(&StateRegs, ~0, 0, 0); +}