X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2F43.c;fp=boards%2F43.c;h=ee12dec6bd29695d36b3d214694c49114a6fabe0;hp=0000000000000000000000000000000000000000;hb=386f5371eb984fb9c2860c83e740890a75cd45c1;hpb=eec2623f6183dd0f9494b99065a16bf90f2a1ccf

diff --git a/boards/43.c b/boards/43.c
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--- /dev/null
+++ b/boards/43.c
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+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2006 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+//ccording to nestopia, BTL_SMB2_C, otherwise known as UNL-SMB2J
+
+#include "mapinc.h"
+
+static uint8 reg;
+static uint8 IRQa;
+static uint32 IRQCount;
+
+static SFORMAT StateRegs[]=
+{
+  {&IRQCount, 4, "IRQC"},
+  {&IRQa, 1, "IRQA"},
+  {&reg, 1, "REG"},
+  {0}
+};
+
+static void Sync(void)
+{
+  setprg4(0x5000,16);  
+  setprg8(0x6000,2);
+  setprg8(0x8000,1);
+  setprg8(0xa000,0);
+  setprg8(0xc000,reg);
+  setprg8(0xe000,9);
+  setchr8(0);
+}
+
+static DECLFW(M43Write)
+{
+  int transo[8]={4,3,4,4,4,7,5,6};
+  switch(A&0xf1ff)
+  {
+    case 0x4022: reg=transo[V&7]; Sync(); break;
+    case 0x8122: IRQa=V&1; IRQCount=0; break;
+  }
+}
+
+static void M43Power(void)
+{
+  reg=0;
+  Sync();
+//  SetReadHandler(0x5000,0x5fff,CartBR);
+  SetReadHandler(0x5000,0xffff,CartBR);
+  SetWriteHandler(0x4020,0xffff,M43Write);
+}
+
+static void M43Reset(void)
+{
+}
+
+static void M43IRQHook(int a)
+{
+ IRQCount+=a;
+ if(IRQa)
+  if(IRQCount>=4096)
+  {
+   IRQa=0;
+   X6502_IRQBegin(FCEU_IQEXT);
+  }
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+void Mapper43_Init(CartInfo *info)
+{
+  info->Reset=M43Reset;
+  info->Power=M43Power;
+  MapIRQHook=M43IRQHook;
+  GameStateRestore=StateRestore;
+  AddExState(&StateRegs, ~0, 0, 0);
+}