| 1 | /* FCE Ultra - NES/Famicom Emulator\r |
| 2 | *\r |
| 3 | * Copyright notice for this file:\r |
| 4 | * Copyright (C) 2009 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 | \r |
| 21 | #include "mapinc.h"\r |
| 22 | \r |
| 23 | static uint8 regs[8];\r |
| 24 | static uint8 *WRAM = NULL;\r |
| 25 | static uint32 WRAMSIZE;\r |
| 26 | \r |
| 27 | static SFORMAT StateRegs[]=\r |
| 28 | {\r |
| 29 | {regs, 8, "REGS"},\r |
| 30 | {0}\r |
| 31 | };\r |
| 32 | \r |
| 33 | static void Sync(void)\r |
| 34 | {\r |
| 35 | setprg2r(0x10,0x0800,0);\r |
| 36 | setprg2r(0x10,0x1000,1);\r |
| 37 | setprg2r(0x10,0x1800,2);\r |
| 38 | setprg8r(0x10,0x6000,1);\r |
| 39 | setprg16(0x8000,0);\r |
| 40 | setprg16(0xC000,~0);\r |
| 41 | setchr8(0);\r |
| 42 | }\r |
| 43 | \r |
| 44 | //static DECLFW(SSSNROMWrite)\r |
| 45 | //{\r |
| 46 | // CartBW(A,V);\r |
| 47 | //}\r |
| 48 | \r |
| 49 | static DECLFW(SSSNROMWrite)\r |
| 50 | {\r |
| 51 | //FCEU_printf("write %04x %02x\n",A,V);\r |
| 52 | //regs[A&7] = V;\r |
| 53 | }\r |
| 54 | \r |
| 55 | static DECLFR(SSSNROMRead)\r |
| 56 | {\r |
| 57 | //FCEU_printf("read %04x\n",A);\r |
| 58 | switch(A&7) {\r |
| 59 | case 0: return regs[0]=0xff; // clear all exceptions\r |
| 60 | case 2: return 0xc0; // DIP selftest + freeplay\r |
| 61 | case 3: return 0x00; // 0, 1 - attract\r |
| 62 | // 2\r |
| 63 | // 4 - menu\r |
| 64 | // 8 - self check and game casette check\r |
| 65 | // 10 - lock?\r |
| 66 | // 20 - game title & count display\r |
| 67 | case 7: return 0x22; // TV type, key not turned, relay B\r |
| 68 | default: return 0;\r |
| 69 | }\r |
| 70 | }\r |
| 71 | \r |
| 72 | static void SSSNROMPower(void)\r |
| 73 | {\r |
| 74 | regs[0]=regs[1]=regs[2]=regs[3]=regs[4]=regs[5]=regs[6]=0;\r |
| 75 | regs[7]=0xff;\r |
| 76 | Sync();\r |
| 77 | memset(WRAM,0x00,WRAMSIZE);\r |
| 78 | // SetWriteHandler(0x0000,0x1FFF,SSSNROMRamWrite);\r |
| 79 | SetReadHandler(0x0800,0x1FFF,CartBR);\r |
| 80 | SetWriteHandler(0x0800,0x1FFF,CartBW);\r |
| 81 | SetReadHandler(0x5000,0x5FFF,SSSNROMRead);\r |
| 82 | SetWriteHandler(0x5000,0x5FFF,SSSNROMWrite);\r |
| 83 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
| 84 | SetWriteHandler(0x6000,0x7FFF,CartBW);\r |
| 85 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
| 86 | }\r |
| 87 | \r |
| 88 | static void SSSNROMReset(void)\r |
| 89 | {\r |
| 90 | regs[1]=regs[2]=regs[3]=regs[4]=regs[5]=regs[6]=0;\r |
| 91 | }\r |
| 92 | \r |
| 93 | static void SSSNROMClose(void)\r |
| 94 | {\r |
| 95 | if(WRAM)\r |
| 96 | FCEU_gfree(WRAM);\r |
| 97 | WRAM=NULL;\r |
| 98 | }\r |
| 99 | \r |
| 100 | static void SSSNROMIRQHook(void)\r |
| 101 | {\r |
| 102 | // X6502_IRQBegin(FCEU_IQEXT);\r |
| 103 | }\r |
| 104 | \r |
| 105 | static void StateRestore(int version)\r |
| 106 | {\r |
| 107 | Sync();\r |
| 108 | }\r |
| 109 | \r |
| 110 | void SSSNROM_Init(CartInfo *info)\r |
| 111 | {\r |
| 112 | info->Reset=SSSNROMReset;\r |
| 113 | info->Power=SSSNROMPower;\r |
| 114 | info->Close=SSSNROMClose;\r |
| 115 | GameHBIRQHook=SSSNROMIRQHook;\r |
| 116 | GameStateRestore=StateRestore;\r |
| 117 | \r |
| 118 | WRAMSIZE=16384;\r |
| 119 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
| 120 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
| 121 | \r |
| 122 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
| 123 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 124 | }\r |