X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2F176.c;fp=boards%2F176.c;h=0830df875187a815ef08a3df46a455ff6bf7f2de;hp=0000000000000000000000000000000000000000;hb=386f5371eb984fb9c2860c83e740890a75cd45c1;hpb=eec2623f6183dd0f9494b99065a16bf90f2a1ccf

diff --git a/boards/176.c b/boards/176.c
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index 0000000..0830df8
--- /dev/null
+++ b/boards/176.c
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+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2007 CaH4e3
+ *  Copyright (C) 2012 FCEUX team
+ *
+ * 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"
+
+extern uint32 ROM_size;
+
+static uint8 prg[4], chr, sbw, we_sram;
+static uint8 *WRAM=NULL;
+static uint32 WRAMSIZE;
+
+static SFORMAT StateRegs[]=
+{
+  {prg, 4, "PRG"},
+  {&chr, 1, "CHR"},
+	{&sbw, 1, "SBW"},
+  {0}
+};
+
+static void Sync(void)
+{
+  setprg8r(0x10,0x6000,0);
+	setprg8(0x8000,prg[0]);
+	setprg8(0xA000,prg[1]);
+	setprg8(0xC000,prg[2]);
+	setprg8(0xE000,prg[3]);
+
+  setchr8(chr);
+}
+
+static DECLFW(M176Write_5001)
+{ 
+	printf("%04X = $%02X\n",A,V);
+	if(sbw)
+	{
+		prg[0] = V*4;
+		prg[1] = V*4+1;
+		prg[2] = V*4+2;
+		prg[3] = V*4+3;
+	}
+  Sync();
+}
+
+static DECLFW(M176Write_5010)
+{ 
+	printf("%04X = $%02X\n",A,V);
+	if(V == 0x24) sbw = 1;
+  Sync();
+}
+
+static DECLFW(M176Write_5011)
+{ 
+	printf("%04X = $%02X\n",A,V);
+	V >>= 1;
+	if(sbw)
+	{
+		prg[0] = V*4;
+		prg[1] = V*4+1;
+		prg[2] = V*4+2;
+		prg[3] = V*4+3;
+	}
+  Sync();
+}
+
+static DECLFW(M176Write_5FF1)
+{ 
+	printf("%04X = $%02X\n",A,V);
+  V >>= 1;
+	prg[0] = V*4;
+	prg[1] = V*4+1;
+	prg[2] = V*4+2;
+	prg[3] = V*4+3;
+  Sync();
+}
+
+static DECLFW(M176Write_5FF2)
+{ 
+	printf("%04X = $%02X\n",A,V);
+  chr = V;
+  Sync();
+}
+
+static DECLFW(M176Write_A001)
+{
+	we_sram = V & 0x03;
+}
+
+static DECLFW(M176Write_WriteSRAM)
+{
+//	if(we_sram)
+		CartBW(A,V);
+}
+
+static void M176Power(void)
+{
+  SetReadHandler(0x6000,0x7fff,CartBR);
+  SetWriteHandler(0x6000,0x7fff,M176Write_WriteSRAM);
+  SetReadHandler(0x8000,0xFFFF,CartBR);
+	SetWriteHandler(0xA001,0xA001,M176Write_A001);
+	SetWriteHandler(0x5001,0x5001,M176Write_5001);
+	SetWriteHandler(0x5010,0x5010,M176Write_5010);
+	SetWriteHandler(0x5011,0x5011,M176Write_5011);
+  SetWriteHandler(0x5ff1,0x5ff1,M176Write_5FF1);
+  SetWriteHandler(0x5ff2,0x5ff2,M176Write_5FF2);
+	
+	we_sram = 0;
+	sbw = 0;
+	prg[0] = 0;
+	prg[1] = 1;
+	prg[2] = (ROM_size-2)&63;
+	prg[3] = (ROM_size-1)&63;
+  Sync();
+}
+
+
+static void M176Close(void)
+{
+  if(WRAM)
+    FCEU_gfree(WRAM);
+  WRAM=NULL;
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+void Mapper176_Init(CartInfo *info)
+{
+  info->Power=M176Power;
+  info->Close=M176Close;
+
+  GameStateRestore=StateRestore;
+
+  WRAMSIZE=8192;
+  WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);
+  SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);
+  AddExState(WRAM, WRAMSIZE, 0, "WRAM");
+  AddExState(&StateRegs, ~0, 0, 0);
+}