-/* FCE Ultra - NES/Famicom Emulator
- *
- * Copyright notice for this file:
- * Copyright (C) 2002 Ben Parnell
- *
- * 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"
-
-
-#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)
- {
- TriggerIRQ();
- 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);break;
- case 0x4501:IRQa=0;break;
- case 0x4502:IRQCount&=0xFF00;IRQCount|=V;break;
- case 0x4503:IRQCount&=0xFF;IRQCount|=V<<8;IRQa=1;break;
- }
- } else {
- ROM_BANK16(0x8000,V>>2);
- FVRAM_BANK8(0x0000,V&3);
- X6502_Rebase();
- }
-}
-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;
-}
-
+/* 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
notaz.gp2x.de / fceu.git / blobdiff