X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2F96.c;fp=boards%2F96.c;h=aa9d8a7308a0c37740988855953d6329ec52179d;hp=0000000000000000000000000000000000000000;hb=43725da7349c85fa13e828fdbf20cc7ac8d298d6;hpb=386f5371eb984fb9c2860c83e740890a75cd45c1

diff --git a/boards/96.c b/boards/96.c
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+++ b/boards/96.c
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+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 1998 BERO
+ *  Copyright (C) 2002 Xodnizel
+ *  Copyright (C) 2012 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
+ *
+ * Oeka-kids board
+ *
+ * I might want to add some code to the mapper 96 PPU hook function
+ * to not change CHR banks if the attribute table is being accessed,
+ * if I make emulation a little more accurate in the future.
+ *
+ */
+
+#include "mapinc.h"
+
+static uint8 reg, ppulatch;
+
+static SFORMAT StateRegs[]=
+{
+  {&reg, 1, "REG"},
+  {&ppulatch, 1, "PPUL"},
+  {0}
+};
+
+static void Sync(void)
+{
+  setmirror(MI_0);
+  setprg32(0x8000,reg & 3);
+  setchr4(0x0000,(reg & 4) | ppulatch);
+  setchr4(0x1000,(reg & 4) | 3);
+}
+
+static DECLFW(M96Write)
+{
+  reg = V;
+  Sync();
+}
+
+static void FP_FASTAPASS(1) M96Hook(uint32 A)
+{
+  if((A & 0x3000) == 0x2000)
+  {
+    ppulatch = (A>>8) & 3;
+    Sync();
+  }
+}
+
+static void M96Power(void)
+{
+  reg = ppulatch = 0;
+  Sync();
+  SetReadHandler(0x8000,0xffff,CartBR);
+  SetWriteHandler(0x8000,0xffff,M96Write);
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+void Mapper96_Init(CartInfo *info)
+{
+  info->Power=M96Power;
+  PPU_hook=M96Hook;
+  GameStateRestore=StateRestore;
+  AddExState(&StateRegs, ~0, 0, 0);
+}
+