| 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 | static uint8 cmd; |
| 24 | static uint8 DRegs[8]; |
| 25 | static SFORMAT StateRegs[]= |
| 26 | { |
| 27 | {&cmd, 1, "CMD"}, |
| 28 | {DRegs, 8, "DREG"}, |
| 29 | {0} |
| 30 | }; |
| 31 | |
| 32 | static void Sync(void) |
| 33 | { |
| 34 | setprg32(0x8000,(DRegs[0]<<4)|(DRegs[1]&0xF)); |
| 35 | setchr8(0); |
| 36 | } |
| 37 | |
| 38 | static void StateRestore(int version) |
| 39 | { |
| 40 | Sync(); |
| 41 | } |
| 42 | |
| 43 | static DECLFW(Write) |
| 44 | { |
| 45 | switch (A&0x7300) |
| 46 | { |
| 47 | case 0x5100: DRegs[0]=V; Sync(); break; |
| 48 | case 0x5000: DRegs[1]=V; Sync(); break; |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | static DECLFW(Write2) |
| 53 | { |
| 54 | switch (A&0x7300) |
| 55 | { |
| 56 | case 0x5200: DRegs[0]=V; Sync(); break; |
| 57 | case 0x5000: DRegs[1]=V; Sync(); break; |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | static uint8 WRAM[8192]; |
| 62 | static DECLFR(AWRAM) |
| 63 | { |
| 64 | return(WRAM[A-0x6000]); |
| 65 | } |
| 66 | |
| 67 | static DECLFW(BWRAM) |
| 68 | { |
| 69 | WRAM[A-0x6000]=V; |
| 70 | } |
| 71 | |
| 72 | static void Power(void) |
| 73 | { |
| 74 | memset(DRegs,0,8); |
| 75 | DRegs[1]=0xFF; |
| 76 | cmd=0; |
| 77 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 78 | SetWriteHandler(0x4020,0xFFFF,Write); |
| 79 | SetReadHandler(0x6000,0x7FFF,AWRAM); |
| 80 | SetWriteHandler(0x6000,0x7FFF,BWRAM); |
| 81 | Sync(); |
| 82 | } |
| 83 | |
| 84 | static void M163HB(void) |
| 85 | { |
| 86 | if(scanline==127&&DRegs[1]&0x80) |
| 87 | setchr4(0x0000,1); |
| 88 | } |
| 89 | |
| 90 | |
| 91 | static void Power2(void) |
| 92 | { |
| 93 | memset(DRegs,0,8); |
| 94 | DRegs[1]=0xFF; |
| 95 | cmd=0; |
| 96 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 97 | SetWriteHandler(0x4020,0xFFFF,Write2); |
| 98 | SetReadHandler(0x6000,0x7FFF,AWRAM); |
| 99 | SetWriteHandler(0x6000,0x7FFF,BWRAM); |
| 100 | Sync(); |
| 101 | } |
| 102 | |
| 103 | void Mapper164_Init(CartInfo *info) |
| 104 | { |
| 105 | info->Power=Power; |
| 106 | GameStateRestore=StateRestore; |
| 107 | AddExState(&StateRegs, ~0, 0, 0); |
| 108 | } |
| 109 | |
| 110 | void Mapper163_Init(CartInfo *info) |
| 111 | { |
| 112 | info->Power=Power2; |
| 113 | GameHBIRQHook=M163HB; |
| 114 | GameStateRestore=StateRestore; |
| 115 | AddExState(&StateRegs, ~0, 0, 0); |
| 116 | } |