| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 2007 CaH4e3\r |
| 5 | *\r |
| 6 | * This program is free software; you can redistribute it and/or modify\r |
| 7 | * it under the terms of the GNU General Public License as published by\r |
| 8 | * the Free Software Foundation; either version 2 of the License, or\r |
| 9 | * (at your option) any later version.\r |
| 10 | *\r |
| 11 | * This program is distributed in the hope that it will be useful,\r |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
| 14 | * GNU General Public License for more details.\r |
| 15 | *\r |
| 16 | * You should have received a copy of the GNU General Public License\r |
| 17 | * along with this program; if not, write to the Free Software\r |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
| 19 | *\r |
| 20 | * FDS Conversion\r |
| 21 | *\r |
| 22 | */\r |
| 23 | \r |
| 24 | #include "mapinc.h"\r |
| 25 | \r |
| 26 | static uint8 reg0, reg1, reg2;\r |
| 27 | static uint8 *WRAM=NULL;\r |
| 28 | static uint32 WRAMSIZE;\r |
| 29 | \r |
| 30 | static SFORMAT StateRegs[]=\r |
| 31 | {\r |
| 32 | {®0, 1, "REG0"},\r |
| 33 | {®1, 1, "REG1"},\r |
| 34 | {®2, 1, "REG2"},\r |
| 35 | {0}\r |
| 36 | };\r |
| 37 | \r |
| 38 | static void Sync(void)\r |
| 39 | {\r |
| 40 | setchr8(0);\r |
| 41 | setprg8(0x8000,0xc);\r |
| 42 | setprg8(0xe000,0xf);\r |
| 43 | if(reg2&0x10)\r |
| 44 | {\r |
| 45 | setprg8(0x6000,reg0);\r |
| 46 | setprg8(0xa000,0xd);\r |
| 47 | setprg8(0xc000,0xe);\r |
| 48 | }\r |
| 49 | else\r |
| 50 | {\r |
| 51 | setprg8r(0x10,0x6000,0);\r |
| 52 | setprg4(0xa000,(0xd<<1));\r |
| 53 | setprg2(0xb000,(0xd<<2)+2);\r |
| 54 | setprg2r(0x10,0xb800,4);\r |
| 55 | setprg2r(0x10,0xc000,5);\r |
| 56 | setprg2r(0x10,0xc800,6);\r |
| 57 | setprg2r(0x10,0xd000,7);\r |
| 58 | setprg2(0xd800,(0xe<<2)+3);\r |
| 59 | }\r |
| 60 | setmirror(reg1^1);\r |
| 61 | }\r |
| 62 | \r |
| 63 | static DECLFW(M103RamWrite0)\r |
| 64 | {\r |
| 65 | WRAM[A&0x1FFF]=V;\r |
| 66 | }\r |
| 67 | \r |
| 68 | static DECLFW(M103RamWrite1)\r |
| 69 | {\r |
| 70 | WRAM[0x2000+((A-0xB800)&0x1FFF)]=V;\r |
| 71 | }\r |
| 72 | \r |
| 73 | static DECLFW(M103Write0)\r |
| 74 | {\r |
| 75 | reg0=V&0xf;\r |
| 76 | Sync();\r |
| 77 | }\r |
| 78 | \r |
| 79 | static DECLFW(M103Write1)\r |
| 80 | {\r |
| 81 | reg1=(V>>3)&1;\r |
| 82 | Sync();\r |
| 83 | }\r |
| 84 | \r |
| 85 | static DECLFW(M103Write2)\r |
| 86 | {\r |
| 87 | reg2=V;\r |
| 88 | Sync();\r |
| 89 | }\r |
| 90 | \r |
| 91 | static void M103Power(void)\r |
| 92 | {\r |
| 93 | reg0=reg1=0; reg2=0;\r |
| 94 | Sync();\r |
| 95 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
| 96 | SetWriteHandler(0x6000,0x7FFF,M103RamWrite0);\r |
| 97 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
| 98 | SetWriteHandler(0xB800,0xD7FF,M103RamWrite1);\r |
| 99 | SetWriteHandler(0x8000,0x8FFF,M103Write0);\r |
| 100 | SetWriteHandler(0xE000,0xEFFF,M103Write1);\r |
| 101 | SetWriteHandler(0xF000,0xFFFF,M103Write2);\r |
| 102 | }\r |
| 103 | \r |
| 104 | static void M103Close(void)\r |
| 105 | {\r |
| 106 | if(WRAM)\r |
| 107 | FCEU_gfree(WRAM);\r |
| 108 | WRAM=NULL;\r |
| 109 | }\r |
| 110 | \r |
| 111 | static void StateRestore(int version)\r |
| 112 | {\r |
| 113 | Sync();\r |
| 114 | }\r |
| 115 | \r |
| 116 | void Mapper103_Init(CartInfo *info)\r |
| 117 | {\r |
| 118 | info->Power=M103Power;\r |
| 119 | info->Close=M103Close;\r |
| 120 | GameStateRestore=StateRestore;\r |
| 121 | \r |
| 122 | WRAMSIZE=16384;\r |
| 123 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
| 124 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
| 125 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
| 126 | \r |
| 127 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 128 | }\r |