mappers updated to 0.98.16

[fceu.git] / boards / fk23c.c

diff --git a/boards/fk23c.c b/boards/fk23c.c
new file mode 100644 (file)
index 0000000..abf0859
--- /dev/null
+++ b/boards/fk23c.c
@@ -0,0 +1,112 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2005 CaH4e3
+ *
+ * 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"
+#include "mmc3.h"
+
+static uint8 unromchr;
+
+static void BMCFK23CCW(uint32 A, uint8 V)
+{
+  if(EXPREGS[0]&0x40)
+    setchr8((EXPREGS[2]&0xFC)|unromchr);
+  else
+  {
+    uint16 base=(EXPREGS[2]&0x7F)<<3;
+    setchr1(A,V|base);
+    if(EXPREGS[3]&2)
+    {
+      setchr1(0x0400,EXPREGS[6]|base);
+      setchr1(0x0C00,EXPREGS[7]|base);
+    }
+  }
+}
+
+static void BMCFK23CPW(uint32 A, uint8 V)
+{
+  if(EXPREGS[0]&4)
+    setprg32(0x8000,EXPREGS[1]>>1);
+  else
+  { 
+    if(EXPREGS[0]&2)
+      setprg8(A,(V&(0x3F>>(EXPREGS[0]&3)))|(EXPREGS[1]<<1));
+    else
+      setprg8(A,V);
+    if(EXPREGS[3]&2)
+    {
+      setprg8(0xC000,EXPREGS[4]);
+      setprg8(0xE000,EXPREGS[5]);
+    }
+  }
+}
+
+static DECLFW(BMCFK23C8003Write)
+{
+  if(EXPREGS[0]&0x40)
+  {
+    unromchr=V&3;
+    FixMMC3CHR(MMC3_cmd);
+  }
+  else
+  {
+    if((A==0x8001)&&(EXPREGS[3]&2&&MMC3_cmd&8))
+    {
+      EXPREGS[4|(MMC3_cmd&3)]=V;
+      FixMMC3PRG(MMC3_cmd);
+      FixMMC3CHR(MMC3_cmd);
+    }
+    else    
+      MMC3_CMDWrite(A,V);
+  }
+}
+
+static DECLFW(BMCFK23CWrite)
+{
+  EXPREGS[A&3]=V;
+  FixMMC3PRG(MMC3_cmd);
+  FixMMC3CHR(MMC3_cmd);
+}
+
+static void BMCFK23CReset(void)
+{
+  EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=EXPREGS[3]=0;
+  EXPREGS[4]=EXPREGS[5]=EXPREGS[6]=EXPREGS[7]=0xFF;
+  MMC3RegReset();
+}
+
+static void BMCFK23CPower(void)
+{
+  EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=EXPREGS[3]=0;
+  EXPREGS[4]=EXPREGS[5]=EXPREGS[6]=EXPREGS[7]=0xFF;
+  GenMMC3Power();
+  SetWriteHandler(0x5ff0,0x5fff,BMCFK23CWrite);
+  SetWriteHandler(0x8000,0x8003,BMCFK23C8003Write);
+}
+
+void BMCFK23C_Init(CartInfo *info)
+{
+  GenMMC3_Init(info, 512, 256, 8, 0);
+  cwrap=BMCFK23CCW;
+  pwrap=BMCFK23CPW;
+  info->Power=BMCFK23CPower;
+  info->Reset=BMCFK23CReset;
+  AddExState(EXPREGS, 8, 0, "EXPR");
+  AddExState(&unromchr, 1, 0, "UNCHR");
+}