| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Xodnizel |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include "mapinc.h" |
| 22 | |
| 23 | |
| 24 | void FP_FASTAPASS(1) IREMIRQHook(int a) |
| 25 | { |
| 26 | if(IRQa) |
| 27 | { |
| 28 | IRQCount-=a; |
| 29 | if(IRQCount<-4) |
| 30 | { |
| 31 | X6502_IRQBegin(FCEU_IQEXT); |
| 32 | IRQa=0; |
| 33 | IRQCount=0xFFFF; |
| 34 | } |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | static DECLFW(Mapper65_write) |
| 39 | { |
| 40 | //if(A>=0x9000 && A<=0x9006) |
| 41 | // printf("$%04x:$%02x, %d\n",A,V,scanline); |
| 42 | switch(A) |
| 43 | { |
| 44 | //default: printf("$%04x:$%02x\n",A,V); |
| 45 | // break; |
| 46 | case 0x8000:ROM_BANK8(0x8000,V);break; |
| 47 | // case 0x9000:printf("$%04x:$%02x\n",A,V);MIRROR_SET2((V>>6)&1);break; |
| 48 | case 0x9001:MIRROR_SET(V>>7);break; |
| 49 | case 0x9003:IRQa=V&0x80;X6502_IRQEnd(FCEU_IQEXT);break; |
| 50 | case 0x9004:IRQCount=IRQLatch;break; |
| 51 | case 0x9005: IRQLatch&=0x00FF; |
| 52 | IRQLatch|=V<<8; |
| 53 | break; |
| 54 | case 0x9006: IRQLatch&=0xFF00;IRQLatch|=V; |
| 55 | break; |
| 56 | case 0xB000:VROM_BANK1(0x0000,V);break; |
| 57 | case 0xB001:VROM_BANK1(0x0400,V);break; |
| 58 | case 0xB002:VROM_BANK1(0x0800,V);break; |
| 59 | case 0xB003:VROM_BANK1(0x0C00,V);break; |
| 60 | case 0xB004:VROM_BANK1(0x1000,V);break; |
| 61 | case 0xB005:VROM_BANK1(0x1400,V);break; |
| 62 | case 0xB006:VROM_BANK1(0x1800,V);break; |
| 63 | case 0xB007:VROM_BANK1(0x1C00,V);break; |
| 64 | case 0xa000:ROM_BANK8(0xA000,V);break; |
| 65 | case 0xC000:ROM_BANK8(0xC000,V);break; |
| 66 | } |
| 67 | //MIRROR_SET2(1); |
| 68 | } |
| 69 | |
| 70 | void Mapper65_init(void) |
| 71 | { |
| 72 | MapIRQHook=IREMIRQHook; |
| 73 | SetWriteHandler(0x8000,0xffff,Mapper65_write); |
| 74 | } |