X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2F15.c;fp=boards%2F15.c;h=6405afa7223f570bdac326a2640cc37724c43c73;hp=0000000000000000000000000000000000000000;hb=386f5371eb984fb9c2860c83e740890a75cd45c1;hpb=eec2623f6183dd0f9494b99065a16bf90f2a1ccf

diff --git a/boards/15.c b/boards/15.c
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+++ b/boards/15.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
+ *
+ */
+
+#include "mapinc.h"
+
+static uint16 latchea;
+static uint8 latched;
+static uint8 *WRAM=NULL;
+static uint32 WRAMSIZE;
+static SFORMAT StateRegs[]=
+{
+  {&latchea, 2, "AREG"},
+  {&latched, 1, "DREG"},
+  {0}
+};
+
+static void Sync(void)
+{
+  int i;
+  setmirror(((latched>>6)&1)^1);
+  switch(latchea)
+  {
+    case 0x8000:
+      for(i=0;i<4;i++)
+        setprg8(0x8000+(i<<13),(((latched&0x7F)<<1)+i)^(latched>>7));
+      break;
+    case 0x8002:
+      for(i=0;i<4;i++)
+        setprg8(0x8000+(i<<13),((latched&0x7F)<<1)+(latched>>7));
+      break;
+    case 0x8001:
+    case 0x8003:
+      for(i=0;i<4;i++)
+      {
+        unsigned int b;
+        b=latched&0x7F;
+        if(i>=2 && !(latchea&0x2))
+          i=0x7F;
+        setprg8(0x8000+(i<<13),(i&1)+((b<<1)^(latched>>7)));
+      }
+      break;
+  }
+}
+
+static DECLFW(M15Write)
+{
+  latchea=A;
+  latched=V;
+	printf("%04X = %02X\n",A,V);
+  Sync();
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+static void M15Power(void)
+{
+  latchea=0x8000;
+  latched=0;
+  setchr8(0);
+  setprg8r(0x10,0x6000,0);
+  SetReadHandler(0x6000,0x7FFF,CartBR);
+  SetWriteHandler(0x6000,0x7FFF,CartBW);
+  SetWriteHandler(0x8000,0xFFFF,M15Write);
+  SetReadHandler(0x8000,0xFFFF,CartBR);
+  Sync();
+}
+
+static void M15Reset(void)
+{
+  latchea=0x8000;
+  latched=0;
+  Sync();
+}
+
+static void M15Close(void)
+{
+  if(WRAM)
+    FCEU_gfree(WRAM);
+  WRAM=NULL;
+}
+
+void Mapper15_Init(CartInfo *info)
+{
+  info->Power=M15Power;
+  info->Reset=M15Reset;
+  info->Close=M15Close;
+  GameStateRestore=StateRestore;
+  WRAMSIZE=8192;
+  WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);
+  SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);
+  if(info->battery)
+  {
+    info->SaveGame[0]=WRAM;
+    info->SaveGameLen[0]=WRAMSIZE;
+  }
+  AddExState(WRAM, WRAMSIZE, 0, "WRAM");
+  AddExState(&StateRegs, ~0, 0, 0);
+}
+