1 /* FCE Ultra - NES/Famicom Emulator
\r
3 * Copyright notice for this file:
\r
4 * Copyright (C) 2007 CaH4e3
\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
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
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
26 static uint8 reg[8], cmd, IRQa = 0, isirqused = 0;
\r
27 static int32 IRQCount;
\r
29 static SFORMAT StateRegs[]=
\r
34 {&IRQCount, 4, "IRQC"},
\r
38 static void Sync(void)
\r
40 setprg8(0x6000,reg[4]);
\r
41 setprg8(0x8000,reg[1]);
\r
42 setprg8(0xA000,reg[2]);
\r
43 setprg8(0xC000,reg[3]);
\r
48 static DECLFW(UNLKS7032Write)
\r
50 // FCEU_printf("bs %04x %02x\n",A,V);
\r
53 // case 0x8FFF: reg[4]=V; Sync(); break;
\r
54 case 0x8000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x000F)|(V&0x0F); isirqused = 1; break;
\r
55 case 0x9000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x00F0)|((V&0x0F)<<4); isirqused = 1; break;
\r
56 case 0xA000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x0F00)|((V&0x0F)<<8); isirqused = 1; break;
\r
57 case 0xB000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0xF000)|(V<<12); isirqused = 1; break;
\r
58 case 0xC000: if(isirqused) { X6502_IRQEnd(FCEU_IQEXT); IRQa=1; } break;
\r
59 case 0xE000: cmd=V&7; break;
\r
60 case 0xF000: reg[cmd]=V; Sync(); break;
\r
64 static void FP_FASTAPASS(1) UNLSMB2JIRQHook(int a)
\r
69 if(IRQCount>=0xFFFF)
\r
73 X6502_IRQBegin(FCEU_IQEXT);
\r
78 static void UNLKS7032Power(void)
\r
81 SetReadHandler(0x6000,0x7FFF,CartBR);
\r
82 SetReadHandler(0x8000,0xFFFF,CartBR);
\r
83 SetWriteHandler(0x4020,0xFFFF,UNLKS7032Write);
\r
86 static void StateRestore(int version)
\r
91 void UNLKS7032_Init(CartInfo *info)
\r
93 info->Power=UNLKS7032Power;
\r
94 MapIRQHook=UNLSMB2JIRQHook;
\r
95 GameStateRestore=StateRestore;
\r
96 AddExState(&StateRegs, ~0, 0, 0);
\r