--- /dev/null
+/* FCE Ultra - NES/Famicom Emulator\r
+ *\r
+ * Copyright notice for this file:\r
+ * Copyright (C) 2009 CaH4e3\r
+ *\r
+ * This program is free software; you can redistribute it and/or modify\r
+ * it under the terms of the GNU General Public License as published by\r
+ * the Free Software Foundation; either version 2 of the License, or\r
+ * (at your option) any later version.\r
+ *\r
+ * This program is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License\r
+ * along with this program; if not, write to the Free Software\r
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r
+ *\r
+ * YOKO Mortal Kombat V Pro, VRC7 pirate clone\r
+ */\r
+\r
+#include "mapinc.h"\r
+\r
+static uint8 prg[3], chr[8], mirr;\r
+static uint8 IRQLatch, IRQa, IRQd;\r
+static uint32 IRQCount, CycleCount;\r
+\r
+static SFORMAT StateRegs[]=\r
+{\r
+ {prg, 3, "PRG"},\r
+ {chr, 8, "CHR"},\r
+ {&mirr, 1, "MIRR"},\r
+ {&IRQa, 1, "IRQA"},\r
+ {&IRQd, 1, "IRQD"},\r
+ {&IRQLatch, 1, "IRQC"},\r
+ {&IRQCount, 4, "IRQC"},\r
+ {&CycleCount, 4, "CYCC"},\r
+ {0}\r
+};\r
+\r
+static void Sync(void)\r
+{\r
+ uint8 i;\r
+ setprg8(0x8000,prg[0]);\r
+ setprg8(0xa000,prg[1]);\r
+ setprg8(0xc000,prg[2]);\r
+ setprg8(0xe000,~0);\r
+ for(i=0; i<8; i++)\r
+ setchr1(i<<10,chr[i]);\r
+ switch(mirr&3)\r
+ {\r
+ case 0: setmirror(MI_V); break;\r
+ case 1: setmirror(MI_H); break;\r
+ case 2: setmirror(MI_0); break;\r
+ case 3: setmirror(MI_1); break;\r
+ }\r
+}\r
+\r
+static DECLFW(UNLVRC7Write)\r
+{\r
+ switch(A&0xF008)\r
+ {\r
+ case 0x8000: prg[0]=V; Sync(); break;\r
+ case 0x8008: prg[1]=V; Sync(); break;\r
+ case 0x9000: prg[2]=V; Sync(); break;\r
+ case 0xa000: chr[0]=V; Sync(); break;\r
+ case 0xa008: chr[1]=V; Sync(); break;\r
+ case 0xb000: chr[2]=V; Sync(); break;\r
+ case 0xb008: chr[3]=V; Sync(); break;\r
+ case 0xc000: chr[4]=V; Sync(); break;\r
+ case 0xc008: chr[5]=V; Sync(); break;\r
+ case 0xd000: chr[6]=V; Sync(); break;\r
+ case 0xd008: chr[7]=V; Sync(); break;\r
+ case 0xe000: mirr=V; Sync(); break;\r
+ case 0xe008:\r
+ IRQLatch=V;\r
+ X6502_IRQEnd(FCEU_IQEXT);\r
+ break;\r
+ case 0xf000:\r
+ IRQa=V&2;\r
+ IRQd=V&1;\r
+ if(V&2)\r
+ IRQCount=IRQLatch;\r
+ CycleCount=0;\r
+ X6502_IRQEnd(FCEU_IQEXT);\r
+ break;\r
+ case 0xf008:\r
+ if(IRQd)\r
+ IRQa=1;\r
+ else\r
+ IRQa=0;\r
+ X6502_IRQEnd(FCEU_IQEXT);\r
+ break;\r
+ } \r
+}\r
+\r
+static void UNLVRC7Power(void)\r
+{\r
+ Sync();\r
+ SetReadHandler(0x8000,0xFFFF,CartBR);\r
+ SetWriteHandler(0x8000,0xFFFF,UNLVRC7Write);\r
+}\r
+\r
+static void UNLVRC7IRQHook(int a)\r
+{\r
+ if(IRQa)\r
+ {\r
+ CycleCount+=a*3;\r
+ while(CycleCount>=341)\r
+ {\r
+ CycleCount-=341;\r
+ IRQCount++;\r
+ if(IRQCount==248)\r
+ {\r
+ X6502_IRQBegin(FCEU_IQEXT);\r
+ IRQCount=IRQLatch;\r
+ }\r
+ }\r
+ }\r
+}\r
+\r
+static void StateRestore(int version)\r
+{\r
+ Sync();\r
+}\r
+\r
+void UNLVRC7_Init(CartInfo *info)\r
+{\r
+ info->Power=UNLVRC7Power;\r
+ MapIRQHook=UNLVRC7IRQHook;\r
+ GameStateRestore=StateRestore;\r
+ AddExState(&StateRegs, ~0, 0, 0);\r
+}\r