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

[fceu.git] / boards / deirom.c

diff --git a/boards/deirom.c b/boards/deirom.c
new file mode 100644 (file)
index 0000000..7a1ed43
--- /dev/null
+++ b/boards/deirom.c
@@ -0,0 +1,82 @@
+/* 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 cmd;
+static uint8 DRegs[8];
+
+static SFORMAT DEI_StateRegs[]=
+{
+  {&cmd, 1, "CMD"},
+  {DRegs, 8, "DREG"},
+  {0}
+};
+
+static void Sync(void)
+{
+  setchr2(0x0000,DRegs[0]);
+  setchr2(0x0800,DRegs[1]);
+  int x;
+  for(x=0;x<4;x++)
+     setchr1(0x1000+(x<<10),DRegs[2+x]);
+  setprg8(0x8000,DRegs[6]);
+  setprg8(0xa000,DRegs[7]);
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+static DECLFW(DEIWrite)
+{
+  switch(A&0x8001)
+  {
+    case 0x8000: cmd=V&0x07; break;
+    case 0x8001: if(cmd<=0x05)
+                   V&=0x3F;
+                 else
+                   V&=0x0F;
+                 if(cmd<=0x01) V>>=1;
+                 DRegs[cmd&0x07]=V;
+                 Sync();
+                 break;
+  }
+}
+
+static void DEIPower(void)
+{
+  setprg8(0xc000,0xE);
+  setprg8(0xe000,0xF);
+  cmd=0;
+  memset(DRegs,0,8);
+  Sync();
+  SetReadHandler(0x8000,0xFFFF,CartBR);
+  SetWriteHandler(0x8000,0xFFFF,DEIWrite);
+}
+
+
+void DEIROM_Init(CartInfo *info)
+{
+  info->Power=DEIPower;
+  GameStateRestore=StateRestore;
+  AddExState(&DEI_StateRegs, ~0, 0, 0);
+}