mirror of
https://github.com/dborth/fceugx.git
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126 lines
2.9 KiB
C++
126 lines
2.9 KiB
C++
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2009 CaH4e3
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Wario Land II (Kirby hack)
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*/
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#include "mapinc.h"
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static uint8 reg[8], chr[8];
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static uint8 *WRAM=NULL;
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static uint32 WRAMSIZE;
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static uint16 IRQCount, IRQa;
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static SFORMAT StateRegs[]=
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{
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{reg, 8, "REGS"},
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{chr, 8, "CHRS"},
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{&IRQCount, 16, "IRQc"},
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{&IRQa, 16, "IRQa"},
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{0}
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};
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static void Sync(void)
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{
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int i;
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setprg8(0x8000,reg[0]);
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setprg8(0xA000,reg[1]);
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setprg8(0xC000,reg[2]);
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for(i=0; i<8; i++)
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setchr1(i << 10,chr[i]);
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setmirror(reg[3]^1);
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}
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static DECLFW(UNLSC127Write)
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{
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switch(A)
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{
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case 0x8000: reg[0] = V; break;
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case 0x8001: reg[1] = V; break;
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case 0x8002: reg[2] = V; break;
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case 0x9000: chr[0] = V; break;
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case 0x9001: chr[1] = V; break;
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case 0x9002: chr[2] = V; break;
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case 0x9003: chr[3] = V; break;
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case 0x9004: chr[4] = V; break;
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case 0x9005: chr[5] = V; break;
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case 0x9006: chr[6] = V; break;
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case 0x9007: chr[7] = V; break;
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case 0xC002: IRQa=0; X6502_IRQEnd(FCEU_IQEXT); break;
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case 0xC005: IRQCount=V; break;
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case 0xC003: IRQa=1; break;
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case 0xD001: reg[3] = V; break;
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}
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Sync();
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}
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static void UNLSC127Power(void)
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{
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Sync();
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setprg8r(0x10,0x6000,0);
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setprg8(0xE000,~0);
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SetReadHandler(0x6000,0x7fff,CartBR);
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SetWriteHandler(0x6000,0x7fff,CartBW);
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SetReadHandler(0x8000,0xFFFF,CartBR);
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SetWriteHandler(0x8000,0xFFFF,UNLSC127Write);
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}
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static void UNLSC127IRQ(void)
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{
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if(IRQa)
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{
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IRQCount--;
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if(IRQCount==0)
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{
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X6502_IRQBegin(FCEU_IQEXT);
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IRQa=0;
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}
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}
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}
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static void UNLSC127Reset(void)
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{
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}
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static void UNLSC127Close(void)
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{
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if(WRAM)
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FCEU_gfree(WRAM);
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WRAM=NULL;
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}
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static void StateRestore(int version)
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{
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Sync();
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}
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void UNLSC127_Init(CartInfo *info)
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{
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info->Reset=UNLSC127Reset;
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info->Power=UNLSC127Power;
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info->Close=UNLSC127Close;
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GameHBIRQHook=UNLSC127IRQ;
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GameStateRestore=StateRestore;
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WRAMSIZE=8192;
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WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);
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SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);
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AddExState(WRAM, WRAMSIZE, 0, "WRAM");
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AddExState(&StateRegs, ~0, 0, 0);
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}
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