| 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r |
| 19 | */\r |
| 20 | \r |
| 21 | #include "mapinc.h"\r |
| 22 | \r |
| 23 | static uint8 reg[8], cmd, IRQa;\r |
| 24 | static int32 IRQCount;\r |
| 25 | \r |
| 26 | static SFORMAT StateRegs[]=\r |
| 27 | {\r |
| 28 | {&cmd, 1, "CMD"},\r |
| 29 | {reg, 8, "REGS"},\r |
| 30 | {&IRQa, 1, "IRQA"},\r |
| 31 | {&IRQCount, 4, "IRQC"},\r |
| 32 | {0}\r |
| 33 | };\r |
| 34 | \r |
| 35 | static void Sync(void)\r |
| 36 | {\r |
| 37 | setprg8(0x6000,reg[4]);\r |
| 38 | setprg8(0x8000,reg[1]);\r |
| 39 | setprg8(0xA000,reg[2]);\r |
| 40 | setprg8(0xC000,reg[3]);\r |
| 41 | setprg8(0xE000,~0);\r |
| 42 | setchr8(0);\r |
| 43 | }\r |
| 44 | \r |
| 45 | static DECLFW(UNLKS7032Write)\r |
| 46 | {\r |
| 47 | // FCEU_printf("bs %04x %02x\n",A,V);\r |
| 48 | switch(A)\r |
| 49 | {\r |
| 50 | // case 0x8FFF: reg[4]=V; Sync(); break;\r |
| 51 | case 0x8000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x000F)|(V&0x0F); break;\r |
| 52 | case 0x9000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x00F0)|((V&0x0F)<<4); break;\r |
| 53 | case 0xA000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x0F00)|((V&0x0F)<<8); break;\r |
| 54 | case 0xB000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0xF000)|(V<<12); break;\r |
| 55 | case 0xC000: X6502_IRQEnd(FCEU_IQEXT); IRQa=1; break;\r |
| 56 | case 0xE000: cmd=V&7; break;\r |
| 57 | case 0xF000: reg[cmd]=V; Sync(); break;\r |
| 58 | }\r |
| 59 | }\r |
| 60 | \r |
| 61 | static void UNLSMB2JIRQHook(int a)\r |
| 62 | {\r |
| 63 | if(IRQa)\r |
| 64 | {\r |
| 65 | IRQCount+=a;\r |
| 66 | if(IRQCount>=0xFFFF)\r |
| 67 | {\r |
| 68 | IRQa=0;\r |
| 69 | IRQCount=0;\r |
| 70 | X6502_IRQBegin(FCEU_IQEXT);\r |
| 71 | }\r |
| 72 | }\r |
| 73 | }\r |
| 74 | \r |
| 75 | static void UNLKS7032Power(void)\r |
| 76 | {\r |
| 77 | Sync();\r |
| 78 | SetReadHandler(0x6000,0x7FFF,CartBR);\r |
| 79 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
| 80 | SetWriteHandler(0x4020,0xFFFF,UNLKS7032Write);\r |
| 81 | }\r |
| 82 | \r |
| 83 | static void StateRestore(int version)\r |
| 84 | {\r |
| 85 | Sync();\r |
| 86 | }\r |
| 87 | \r |
| 88 | void UNLKS7032_Init(CartInfo *info)\r |
| 89 | {\r |
| 90 | info->Power=UNLKS7032Power;\r |
| 91 | MapIRQHook=UNLSMB2JIRQHook;\r |
| 92 | GameStateRestore=StateRestore;\r |
| 93 | AddExState(&StateRegs, ~0, 0, 0);\r |
| 94 | }\r |