mirror of
https://github.com/dborth/fceugx.git
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125 lines
3.4 KiB
C++
125 lines
3.4 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "mapinc.h"
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static uint8 reg[7];
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static uint8 *WRAM=NULL;
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static uint32 WRAMSIZE;
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static SFORMAT StateRegs[]=
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{
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{reg, 2, "REG"},
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{0}
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};
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static uint8 bs_tbl[128] = {
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0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33,
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0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67,
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0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33, 0x03, 0x13, 0x23, 0x33,
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0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67,
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0x02, 0x12, 0x22, 0x32, 0x02, 0x12, 0x22, 0x32, 0x02, 0x12, 0x22, 0x32, 0x02, 0x12, 0x22, 0x32,
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0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67, 0x45, 0x67,
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0x02, 0x12, 0x22, 0x32, 0x02, 0x12, 0x22, 0x32, 0x02, 0x12, 0x22, 0x32, 0x00, 0x10, 0x20, 0x30,
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0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67, 0x47, 0x67,
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};
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static uint8 br_tbl[16] = {
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0x00, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
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};
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static void Sync(void)
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{
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// setchr4(0x0000,(reg[0]&0x80) >> 7);
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// setchr4(0x1000,(reg[0]&0x80) >> 7);
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setchr8(0);
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setprg8r(0x10,0x6000,0);
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setprg16(0x8000,bs_tbl[reg[0]&0x7f]>>4);
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setprg16(0xc000,bs_tbl[reg[0]&0x7f]&0xf);
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setmirror(MI_V);
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}
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static DECLFW(UNLPEC586Write)
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{
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reg[(A&0x700)>>8]=V;
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FCEU_printf("bs %04x %02x\n",A,V);
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Sync();
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}
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static DECLFR(UNLPEC586Read)
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{
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FCEU_printf("read %04x\n",A);
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return (X.DB & 0xD8) | br_tbl[reg[4]>>4];
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}
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static void UNLPEC586Power(void)
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{
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reg[0]=0x0E;
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Sync();
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setchr8(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(0x5000,0x5fff,UNLPEC586Write);
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SetReadHandler(0x5000,0x5fff,UNLPEC586Read);
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}
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static void UNLPEC586IRQ(void)
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{
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// if(reg[0]&0x80)
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{
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if(scanline==128) {
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setchr4(0x0000,1);
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setchr4(0x1000,0);
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}
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else {
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setchr4(0x0000,0);
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setchr4(0x1000,1);
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}
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}
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}
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static void UNLPEC586Close(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 UNLPEC586Init(CartInfo *info)
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{
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info->Power=UNLPEC586Power;
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info->Close=UNLPEC586Close;
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GameHBIRQHook=UNLPEC586IRQ;
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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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