X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2Fsl1632.c;h=18895fbbd77bf4b5a2eb602bac89d71ecf289b10;hp=9e99722e6431adfcd8ee096ac6bb0e5faabf23a9;hb=386f5371eb984fb9c2860c83e740890a75cd45c1;hpb=eec2623f6183dd0f9494b99065a16bf90f2a1ccf diff --git a/boards/sl1632.c b/boards/sl1632.c index 9e99722..18895fb 100644 --- a/boards/sl1632.c +++ b/boards/sl1632.c @@ -1,159 +1,124 @@ -/* FCE Ultra - NES/Famicom Emulator - * - * Copyright notice for this file: - * Copyright (C) 2005 CaH4e3 - * - * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "mapinc.h" - -static uint8 chrcmd[8], prg0, prg1, brk, mirr; -static uint8 reg[8], cmd; -static uint8 IRQCount,IRQLatch,IRQa; -static uint8 IRQReload; -static SFORMAT StateRegs[]= -{ - {reg, 8, "MMCREG"}, - {&cmd, 1, "MMCCMD"}, - {chrcmd, 8, "CHRCMD"}, - {&prg0, 1, "PRG0"}, - {&prg1, 1, "PRG1"}, - {&brk, 1, "BRK"}, - {&mirr, 1, "MIRR"}, - {&IRQReload, 1, "IRQR"}, - {&IRQCount, 1, "IRQC"}, - {&IRQLatch, 1, "IRQL"}, - {&IRQa, 1, "IRQA"}, - {0} -}; - -static void Sync(void) -{ -// if(brk&2) -// { -// setprg16(0x8000,~0); -// setprg16(0xC000,~0); -// } -// else - { - setprg8(0x8000,prg0); - setprg8(0xA000,prg1); - } - int i; - for(i=0; i<8; i++) - setchr1(i<<10,chrcmd[i]); - setmirror(mirr^1); -} - -static void Sync2(void) -{ - setprg8(0x8000,reg[6]&0x3F); - setprg8(0xA000,reg[7]&0x3F); - setchr2(0x0000,reg[0]>>1); - setchr2(0x8000,reg[1]>>1); - setchr1(0x1000,reg[2]); - setchr1(0x1400,reg[3]); - setchr1(0x1800,reg[4]); - setchr1(0x1C00,reg[5]); - setmirror(mirr^1); -} - -static DECLFW(UNLSL1632CMDWrite) -{ - FCEU_printf("bs %04x %02x\n",A,V); -// if((A&0xA131)==0xA131) brk=V; - if((A&0xA131)==0xA131) brk=V; - if(brk==2) - { - switch(A&0xE001) - { - case 0x8000: cmd=V&7; break; - case 0x8001: reg[cmd]=V; Sync(); break; - case 0xA000: mirr=V&1; break; - case 0xC000: IRQLatch=V; break; - case 0xC001: IRQReload=1; break; - case 0xE000: X6502_IRQEnd(FCEU_IQEXT); IRQa=0; break; - case 0xE001: IRQa=1; break; - } - Sync2(); - } - else - { - switch(A&0xF003) - { - case 0x8000: prg0=V; break; - case 0xA000: prg1=V; break; - case 0x9000: mirr=V&1; break; - case 0xB000: chrcmd[0]=(chrcmd[0]&0xF0)|(V&0x0F); break; - case 0xB001: chrcmd[0]=(chrcmd[0]&0x0F)|(V<<4); break; - case 0xB002: chrcmd[1]=(chrcmd[1]&0xF0)|(V&0x0F); break; - case 0xB003: chrcmd[1]=(chrcmd[1]&0x0F)|(V<<4); break; - case 0xC000: chrcmd[2]=(chrcmd[2]&0xF0)|(V&0x0F); break; - case 0xC001: chrcmd[2]=(chrcmd[2]&0x0F)|(V<<4); break; - case 0xC002: chrcmd[3]=(chrcmd[3]&0xF0)|(V&0x0F); break; - case 0xC003: chrcmd[3]=(chrcmd[3]&0x0F)|(V<<4); break; - case 0xD000: chrcmd[4]=(chrcmd[4]&0xF0)|(V&0x0F); break; - case 0xD001: chrcmd[4]=(chrcmd[4]&0x0F)|(V<<4); break; - case 0xD002: chrcmd[5]=(chrcmd[5]&0xF0)|(V&0x0F); break; - case 0xD003: chrcmd[5]=(chrcmd[5]&0x0F)|(V<<4); break; - case 0xE000: chrcmd[6]=(chrcmd[6]&0xF0)|(V&0x0F); break; - case 0xE001: chrcmd[6]=(chrcmd[6]&0x0F)|(V<<4); break; - case 0xE002: chrcmd[7]=(chrcmd[7]&0xF0)|(V&0x0F); break; - case 0xE003: chrcmd[7]=(chrcmd[7]&0x0F)|(V<<4); break; - } - Sync(); - } -} - -static void UNLSL1632IRQHook(void) -{ - int count = IRQCount; - if((scanline==128)&&IRQa)X6502_IRQBegin(FCEU_IQEXT); - if(!count || IRQReload) - { - IRQCount = IRQLatch; - IRQReload = 0; - } - else - IRQCount--; - if(!IRQCount) - { - if(IRQa) - { - X6502_IRQBegin(FCEU_IQEXT); - } - } -} - -static void StateRestore(int version) -{ - Sync(); -} - -static void UNLSL1632Power(void) -{ - setprg16(0xC000,~0); - SetReadHandler(0x8000,0xFFFF,CartBR); - SetWriteHandler(0x8000,0xFFFF,UNLSL1632CMDWrite); -} - -void UNLSL1632_Init(CartInfo *info) -{ - info->Power=UNLSL1632Power; - GameHBIRQHook2=UNLSL1632IRQHook; - GameStateRestore=StateRestore; - AddExState(&StateRegs, ~0, 0, 0); -} +/* FCE Ultra - NES/Famicom Emulator + * + * Copyright notice for this file: + * Copyright (C) 2005 CaH4e3 + * + * 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" +#include "mmc3.h" + +// brk is a system call in *nix, and is an illegal variable name - soules +static uint8 chrcmd[8], prg0, prg1, bbrk, mirr, swap; +static SFORMAT StateRegs[]= +{ + {chrcmd, 8, "CHRCMD"}, + {&prg0, 1, "PRG0"}, + {&prg1, 1, "PRG1"}, + {&bbrk, 1, "BRK"}, + {&mirr, 1, "MIRR"}, + {&swap, 1, "SWAP"}, + {0} +}; + +static void Sync(void) +{ + int i; + setprg8(0x8000,prg0); + setprg8(0xA000,prg1); + setprg8(0xC000,~1); + setprg8(0xE000,~0); + for(i=0; i<8; i++) + setchr1(i<<10,chrcmd[i]); + setmirror(mirr^1); +} + +static void UNLSL1632CW(uint32 A, uint8 V) +{ + int cbase=(MMC3_cmd&0x80)<<5; + int page0=(bbrk&0x08)<<5; + int page1=(bbrk&0x20)<<3; + int page2=(bbrk&0x80)<<1; + setchr1(cbase^0x0000,page0|(DRegBuf[0]&(~1))); + setchr1(cbase^0x0400,page0|DRegBuf[0]|1); + setchr1(cbase^0x0800,page0|(DRegBuf[1]&(~1))); + setchr1(cbase^0x0C00,page0|DRegBuf[1]|1); + setchr1(cbase^0x1000,page1|DRegBuf[2]); + setchr1(cbase^0x1400,page1|DRegBuf[3]); + setchr1(cbase^0x1800,page2|DRegBuf[4]); + setchr1(cbase^0x1c00,page2|DRegBuf[5]); +} + +static DECLFW(UNLSL1632CMDWrite) +{ + if(A==0xA131) + { + bbrk=V; + } + if(bbrk&2) + { + FixMMC3PRG(MMC3_cmd); + FixMMC3CHR(MMC3_cmd); + if(A<0xC000) + MMC3_CMDWrite(A,V); + else + MMC3_IRQWrite(A,V); + } + else + { + if((A>=0xB000)&&(A<=0xE003)) + { + int ind=((((A&2)|(A>>10))>>1)+2)&7; + int sar=((A&1)<<2); + chrcmd[ind]=(chrcmd[ind]&(0xF0>>sar))|((V&0x0F)<Power=UNLSL1632Power; + GameStateRestore=StateRestore; + AddExState(&StateRegs, ~0, 0, 0); +}