-/* FCE Ultra - NES/Famicom Emulator\r
- *\r
- * Copyright notice for this file:\r
- * Copyright (C) 2002 Xodnizel\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
-\r
-#include "mapinc.h"\r
-\r
-static uint8 FFEmode;\r
-\r
-#define FVRAM_BANK8(A,V) {VPage[0]=VPage[1]=VPage[2]=VPage[3]=VPage[4]=VPage[5]=VPage[6]=VPage[7]=V?&MapperExRAM[(V)<<13]-(A):&CHRRAM[(V)<<13]-(A);CHRBankList[0]=((V)<<3);CHRBankList[1]=((V)<<3)+1;CHRBankList[2]=((V)<<3)+2;CHRBankList[3]=((V)<<3)+3;CHRBankList[4]=((V)<<3)+4;CHRBankList[5]=((V)<<3)+5;CHRBankList[6]=((V)<<3)+6;CHRBankList[7]=((V)<<3)+7;PPUCHRRAM=0xFF;}\r
-\r
-static void FP_FASTAPASS(1) FFEIRQHook(int a)\r
-{\r
- if(IRQa)\r
- {\r
- IRQCount+=a;\r
- if(IRQCount>=0x10000)\r
- {\r
- X6502_IRQBegin(FCEU_IQEXT);\r
- IRQa=0;\r
- IRQCount=0;\r
- }\r
- }\r
-}\r
-\r
-DECLFW(Mapper6_write)\r
-{\r
- if(A<0x8000)\r
- {\r
- switch(A){\r
- case 0x42FF:MIRROR_SET((V>>4)&1);break;\r
- case 0x42FE:onemir((V>>3)&2); FFEmode=V&0x80;break;\r
- case 0x4501:IRQa=0;X6502_IRQEnd(FCEU_IQEXT);break;\r
- case 0x4502:IRQCount&=0xFF00;IRQCount|=V;break;\r
- case 0x4503:IRQCount&=0xFF;IRQCount|=V<<8;IRQa=1;break;\r
- }\r
- } else {\r
- switch (FFEmode)\r
- {\r
- case 0x80: setchr8(V); break;\r
- default: ROM_BANK16(0x8000,V>>2);\r
- FVRAM_BANK8(0x0000,V&3);\r
- }\r
- }\r
-}\r
-void Mapper6_StateRestore(int version)\r
-{\r
- int x;\r
- for(x=0;x<8;x++)\r
- if(PPUCHRRAM&(1<<x))\r
- {\r
- if(CHRBankList[x]>7)\r
- VPage[x]=&MapperExRAM[(CHRBankList[x]&31)*0x400]-(x*0x400);\r
- else VPage[x]=&CHRRAM[(CHRBankList[x]&7)*0x400]-(x*0x400);\r
- }\r
-}\r
-void Mapper6_init(void)\r
-{\r
-MapIRQHook=FFEIRQHook;\r
-ROM_BANK16(0xc000,7);\r
-\r
-SetWriteHandler(0x4020,0x5fff,Mapper6_write);\r
-SetWriteHandler(0x8000,0xffff,Mapper6_write);\r
-MapStateRestore=Mapper6_StateRestore;\r
-}\r
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ * Copyright (C) 2002 Xodnizel
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "mapinc.h"
+
+static uint8 FFEmode;
+
+#define FVRAM_BANK8(A,V) {VPage[0]=VPage[1]=VPage[2]=VPage[3]=VPage[4]=VPage[5]=VPage[6]=VPage[7]=V?&MapperExRAM[(V)<<13]-(A):&CHRRAM[(V)<<13]-(A);CHRBankList[0]=((V)<<3);CHRBankList[1]=((V)<<3)+1;CHRBankList[2]=((V)<<3)+2;CHRBankList[3]=((V)<<3)+3;CHRBankList[4]=((V)<<3)+4;CHRBankList[5]=((V)<<3)+5;CHRBankList[6]=((V)<<3)+6;CHRBankList[7]=((V)<<3)+7;PPUCHRRAM=0xFF;}
+
+static void FP_FASTAPASS(1) FFEIRQHook(int a)
+{
+ if(IRQa)
+ {
+ IRQCount+=a;
+ if(IRQCount>=0x10000)
+ {
+ X6502_IRQBegin(FCEU_IQEXT);
+ IRQa=0;
+ IRQCount=0;
+ }
+ }
+}
+
+DECLFW(Mapper6_write)
+{
+ if(A<0x8000)
+ {
+ switch(A){
+ case 0x42FF:MIRROR_SET((V>>4)&1);break;
+ case 0x42FE:onemir((V>>3)&2); FFEmode=V&0x80;break;
+ case 0x4501:IRQa=0;X6502_IRQEnd(FCEU_IQEXT);break;
+ case 0x4502:IRQCount&=0xFF00;IRQCount|=V;break;
+ case 0x4503:IRQCount&=0xFF;IRQCount|=V<<8;IRQa=1;break;
+ }
+ } else {
+ switch (FFEmode)
+ {
+ case 0x80: setchr8(V); break;
+ default: ROM_BANK16(0x8000,V>>2);
+ FVRAM_BANK8(0x0000,V&3);
+ }
+ }
+}
+void Mapper6_StateRestore(int version)
+{
+ int x;
+ for(x=0;x<8;x++)
+ if(PPUCHRRAM&(1<<x))
+ {
+ if(CHRBankList[x]>7)
+ VPage[x]=&MapperExRAM[(CHRBankList[x]&31)*0x400]-(x*0x400);
+ else VPage[x]=&CHRRAM[(CHRBankList[x]&7)*0x400]-(x*0x400);
+ }
+}
+void Mapper6_init(void)
+{
+MapIRQHook=FFEIRQHook;
+ROM_BANK16(0xc000,7);
+
+SetWriteHandler(0x4020,0x5fff,Mapper6_write);
+SetWriteHandler(0x8000,0xffff,Mapper6_write);
+MapStateRestore=Mapper6_StateRestore;
+}
notaz.gp2x.de / fceu.git / blobdiff