X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2F82.c;fp=boards%2F82.c;h=7dfd276cd14e1086d28a22b41daac37dc2142a34;hp=0000000000000000000000000000000000000000;hb=43725da7349c85fa13e828fdbf20cc7ac8d298d6;hpb=386f5371eb984fb9c2860c83e740890a75cd45c1

diff --git a/boards/82.c b/boards/82.c
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--- /dev/null
+++ b/boards/82.c
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+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  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
+ *
+ * Taito X1-017 board, battery backed
+ *
+ */
+
+#include "mapinc.h"
+
+static uint8 regs[9], ctrl;
+static uint8 *WRAM=NULL;
+static uint32 WRAMSIZE;
+
+static SFORMAT StateRegs[]=
+{
+  {regs, 9, "REGS"},
+  {&ctrl, 1, "CTRL"},
+  {0}
+};
+
+static void Sync(void)
+{
+  uint32 swap = ((ctrl & 2) << 11);
+  setchr2(0x0000^swap,regs[0]>>1);  
+  setchr2(0x0800^swap,regs[1]>>1);  
+  setchr1(0x1000^swap,regs[2]);  
+  setchr1(0x1400^swap,regs[3]);  
+  setchr1(0x1800^swap,regs[4]);  
+  setchr1(0x1c00^swap,regs[5]);  
+  setprg8r(0x10,0x6000,0);
+  setprg8(0x8000,regs[6]);
+  setprg8(0xA000,regs[7]);
+  setprg8(0xC000,regs[8]);
+  setprg8(0xE000,~0);
+  setmirror(ctrl & 1);
+}
+
+static DECLFW(M82Write)
+{
+  if(A <= 0x7ef5)
+    regs[A & 7] = V;
+  else
+    switch(A)
+    {
+      case 0x7ef6: ctrl = V & 3; break;
+      case 0x7efa: regs[6] = V >> 2; break;
+      case 0x7efb: regs[7] = V >> 2; break;
+      case 0x7efc: regs[8] = V >> 2; break;
+    }
+  Sync();
+}
+
+static void M82Power(void)
+{
+  Sync();
+  SetReadHandler(0x6000,0xffff,CartBR);
+  SetWriteHandler(0x6000,0x7fff,CartBW);
+  SetWriteHandler(0x7ef0,0x7efc,M82Write);  // external WRAM might end at $73FF
+}
+
+static void M82Close(void)
+{
+  if(WRAM)
+    FCEU_gfree(WRAM);
+  WRAM=NULL;
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+void Mapper82_Init(CartInfo *info)
+{
+  info->Power=M82Power;
+  info->Power=M82Close;
+
+  WRAMSIZE=8192;
+  WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);
+  SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);
+  AddExState(WRAM, WRAMSIZE, 0, "WRAM");
+  if(info->battery)
+  {
+    info->SaveGame[0]=WRAM;
+    info->SaveGameLen[0]=WRAMSIZE;
+  }
+  GameStateRestore=StateRestore;
+  AddExState(&StateRegs, ~0, 0, 0);
+}