X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=mappers%2F83.c;fp=mappers%2F83.c;h=0000000000000000000000000000000000000000;hp=ca26388338459ef608bbd5f4dbee73ef841dcb95;hb=43725da7349c85fa13e828fdbf20cc7ac8d298d6;hpb=386f5371eb984fb9c2860c83e740890a75cd45c1 diff --git a/mappers/83.c b/mappers/83.c deleted file mode 100644 index ca26388..0000000 --- a/mappers/83.c +++ /dev/null @@ -1,147 +0,0 @@ -/* FCE Ultra - NES/Famicom Emulator - * - * Copyright notice for this file: - * Copyright (C) 2002 Xodnizel - * - * 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 - */ - -#include "mapinc.h" - -static uint8 is2kbank, isnot2kbank, dipreg; - -/*void Mapper83_init(void) -{ - -} -*/ -static void m83IRQHook(int a) -{ - if(IRQa) - { - IRQCount-=a; - if(IRQCount<0) - { - X6502_IRQBegin(FCEU_IQEXT); - IRQa=0; - IRQCount=0xFFFF; - } - } -} - -static DECLFW(wrlow) -{ - mapbyte4[A&3]=V; -} - -static DECLFR(rdlow) -{ - return mapbyte4[A&3]; -} - -static DECLFR(rd5000) -{ - return dipreg; -} - -static void m83prg(void) -{ - ROM_BANK16(0x8000,(mapbyte1[0]&0x3F)); - ROM_BANK16(0xC000,(mapbyte1[0]&0x30)|0xF); -} - -static void m83chr(void) -{ - if(is2kbank&&!isnot2kbank) - { - VROM_BANK2(0x0000,mapbyte2[0]); - VROM_BANK2(0x0800,mapbyte2[1]); - VROM_BANK2(0x1000,mapbyte2[6]); - VROM_BANK2(0x1800,mapbyte2[7]); - } - else - { - int x; - for(x=0;x<8;x++) - VROM_BANK1(x*0x400,mapbyte2[x]|((mapbyte1[0]&0x30)<<4)); - } -} - -static DECLFW(Mapper83_write) -{ - //printf("$%04x:$%02x\n",A,V); - switch(A) - { - case 0x8000: is2kbank = 1; - case 0xB000: - case 0xB0FF: - case 0xB1FF: - { - mapbyte1[0]=V; - m83prg(); - m83chr(); - } - break; - case 0x8100: - mapbyte3[0]=V&0x80; - switch(V&0x3) - { - case 0x00:MIRROR_SET2(1);break; - case 0x01:MIRROR_SET2(0);break; - case 0x02:onemir(0);break; - case 0x03:onemir(1);break; - } - break; - case 0x8200:IRQCount&=0xFF00;IRQCount|=V;X6502_IRQEnd(FCEU_IQEXT);break; - case 0x8201:IRQa=mapbyte3[0];IRQCount&=0xFF;IRQCount|=V<<8;break; - case 0x8300:ROM_BANK8(0x8000,V);break; - case 0x8301:ROM_BANK8(0xA000,V);break; - case 0x8302:ROM_BANK8(0xC000,V);break; - case 0x8310:mapbyte2[0]=V;m83chr();break; - case 0x8311:mapbyte2[1]=V;m83chr();break; - case 0x8312:mapbyte2[2]=V;isnot2kbank = 1;m83chr();break; // 2 mappers in one :) - case 0x8313:mapbyte2[3]=V;isnot2kbank = 1;m83chr();break; - case 0x8314:mapbyte2[4]=V;isnot2kbank = 1;m83chr();break; - case 0x8315:mapbyte2[5]=V;isnot2kbank = 1;m83chr();break; - case 0x8316:mapbyte2[6]=V;m83chr();break; - case 0x8317:mapbyte2[7]=V;m83chr();break; - case 0x8318:mapbyte1[1]=V;m83prg();break; - } -// printf("$%04x:$%02x, $%04x\n",A,V,X.PC.W); - -} - -static void m83Reset(void) -{ - dipreg^=1; -} - -void Mapper83_init(void) -{ - is2kbank = 0; - isnot2kbank = 0; - dipreg = 0; - ROM_BANK8(0xc000,0x1e); - ROM_BANK8(0xe000,0x1f); - - MapIRQHook=m83IRQHook; - MapperReset=m83Reset; - - SetReadHandler(0x5000,0x5000,rd5000); // title scren dip switch - SetReadHandler(0x5100,0x5103,rdlow); - SetWriteHandler(0x5100,0x5103,wrlow); - SetWriteHandler(0x8000,0xffff,Mapper83_write); - mapbyte1[1]=0xF; -}