updated bords/mappers/stuff to 0.98.15, lots of them got broken, asmcore support...

[fceu.git] / mappers / 50.c

diff --git a/mappers/112.c b/mappers/50.c
similarity index 50%
rename from mappers/112.c
rename to mappers/50.c
index 273d550..8d7f515 100644 (file)
--- a/mappers/112.c
+++ b/mappers/50.c
@@ -1,7 +1,7 @@
 /* FCE Ultra - NES/Famicom Emulator
  *
  * Copyright notice for this file:
- *  Copyright (C) 2002 Ben Parnell
+ *  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
@@ -21,33 +21,55 @@
 #include "mapinc.h"
 
 
+static void FP_FASTAPASS(1) Mapper50IRQ(int a)
+{
+ if(IRQa)
+ {
+        if(IRQCount<4096)
+         IRQCount+=a;
+        else
+        {
+         IRQa=0;
+         X6502_IRQBegin(FCEU_IQEXT);
+        }
+ }
+}
 
-DECLFW(Mapper112_write)
+static void M50Restore(int version)
 {
-switch(A)
+ setprg8(0xc000,mapbyte1[0]);
+}
+
+static DECLFW(M50W)
 {
- case 0xe000:MIRROR_SET(V&1);break;
- case 0x8000:mapbyte1[0]=V;break;
- case 0xa000:switch(mapbyte1[0])
-            {
-            case 0:ROM_BANK8(0x8000,V);break;
-            case 1:ROM_BANK8(0xA000,V);break;
-                case 2: V&=0xFE;VROM_BANK1(0,V);
-                        VROM_BANK1(0x400,(V+1));break;
-                case 3: V&=0xFE;VROM_BANK1(0x800,V);
-                        VROM_BANK1(0xC00,(V+1));break;
-            case 4:VROM_BANK1(0x1000,V);break;
-            case 5:VROM_BANK1(0x1400,V);break;
-            case 6:VROM_BANK1(0x1800,V);break;
-            case 7:VROM_BANK1(0x1c00,V);break;
-            }
-            X6502_Rebase();
-            break;
+ if((A&0xD060)==0x4020)
+ {
+  if(A&0x100)
+  {
+   IRQa=V&1;
+   if(!IRQa) IRQCount=0;
+   X6502_IRQEnd(FCEU_IQEXT);
+  }
+  else
+  {
+   V=((V&1)<<2)|((V&2)>>1)|((V&4)>>1)|(V&8);
+   mapbyte1[0]=V;
+   setprg8(0xc000,V);
+  }
  }
 }
 
-void Mapper112_init(void)
+void Mapper50_init(void)
 {
-  SetWriteHandler(0x8000,0xffff,Mapper112_write);
+  SetWriteHandler(0x4020,0x5fff,M50W);
+  SetReadHandler(0x6000,0xffff,CartBR);
+  MapStateRestore=M50Restore;
+  MapIRQHook=Mapper50IRQ;
+
+  setprg8(0x6000,0xF);
+  setprg8(0x8000,0x8);
+  setprg8(0xa000,0x9);
+  setprg8(0xc000,0x0);
+  setprg8(0xe000,0xB);
 }