mirror of
https://github.com/dborth/fceugx.git
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105 lines
2.5 KiB
C++
105 lines
2.5 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) 1998 BERO
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* Copyright (C) 2002 Xodnizel
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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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#include "mapinc.h"
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static uint8 latche;
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static DECLFW(Mapper34_write)
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{
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switch(A)
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{
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case 0x7FFD:ROM_BANK32(V);break;
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case 0x7FFE:VROM_BANK4(0x0000,V);break;
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case 0x7fff:VROM_BANK4(0x1000,V);break;
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}
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if(A>=0x8000)
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ROM_BANK32(V);
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}
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void Mapper34_init(void)
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{
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ROM_BANK32(0);
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SetWriteHandler(0x7ffd,0xffff,Mapper34_write);
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}
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/* I might want to add some code to the mapper 96 PPU hook function
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to not change CHR banks if the attribute table is being accessed,
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if I make emulation a little more accurate in the future.
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*/
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static uint8 M96LA;
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static DECLFW(Mapper96_write)
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{
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latche=V;
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setprg32(0x8000,V&3);
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setchr4r(0x10,0x0000,(latche&4)|M96LA);
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setchr4r(0x10,0x1000,(latche&4)|3);
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}
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static void M96Hook(uint32 A)
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{
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if((A&0x3000)!=0x2000) return;
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//if((A&0x3ff)>=0x3c0) return;
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M96LA=(A>>8)&3;
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setchr4r(0x10,0x0000,(latche&4)|M96LA);
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}
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static void M96Sync(int v)
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{
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setprg32(0x8000,latche&3);
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setchr4r(0x10,0x0000,(latche&4)|M96LA);
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setchr4r(0x10,0x1000,(latche&4)|3);
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}
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void Mapper96_init(void)
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{
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SetWriteHandler(0x8000,0xffff,Mapper96_write);
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PPU_hook=M96Hook;
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AddExState(&latche, 1, 0, "LATC");
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AddExState(&M96LA, 1, 0, "LAVA");
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SetupCartCHRMapping(0x10, MapperExRAM, 32768, 1);
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latche=M96LA=0;
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M96Sync(0);
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setmirror(MI_0);
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GameStateRestore=M96Sync;
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}
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// DIS23C01 Open Soft, Korea
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// Metal Force (K)
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// Buzz and Waldog (K)
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static DECLFW(M156Write)
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{
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if(A>=0xc000 && A<=0xC003)
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VROM_BANK1((A&3)*1024,V);
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else if(A>=0xc008 && A<=0xc00b)
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VROM_BANK1(0x1000+(A&3)*1024,V);
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if(A==0xc010) ROM_BANK16(0x8000,V);
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// printf("$%04x:$%02x\n",A,V);
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}
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void Mapper156_init(void)
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{
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onemir(0);
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SetWriteHandler(0xc000,0xc010,M156Write);
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}
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