mappers updated to 0.98.16

[fceu.git] / boards / sl1632.c

diff --git a/boards/sl1632.c b/boards/sl1632.c
new file mode 100644 (file)
index 0000000..9e99722
--- /dev/null
+++ b/boards/sl1632.c
@@ -0,0 +1,159 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2005 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
+ */
+
+#include "mapinc.h"
+
+static uint8 chrcmd[8], prg0, prg1, brk, mirr;
+static uint8 reg[8], cmd;
+static uint8 IRQCount,IRQLatch,IRQa;
+static uint8 IRQReload;
+static SFORMAT StateRegs[]=
+{
+  {reg, 8, "MMCREG"},
+  {&cmd, 1, "MMCCMD"},
+  {chrcmd, 8, "CHRCMD"},
+  {&prg0, 1, "PRG0"},
+  {&prg1, 1, "PRG1"},
+  {&brk, 1, "BRK"},
+  {&mirr, 1, "MIRR"},
+  {&IRQReload, 1, "IRQR"},
+  {&IRQCount, 1, "IRQC"},
+  {&IRQLatch, 1, "IRQL"},
+  {&IRQa, 1, "IRQA"},
+  {0}
+};
+
+static void Sync(void)
+{
+//  if(brk&2)
+//  {
+//    setprg16(0x8000,~0);
+//    setprg16(0xC000,~0); 
+//  }
+//  else
+  {
+    setprg8(0x8000,prg0);
+    setprg8(0xA000,prg1);
+  }
+  int i;
+  for(i=0; i<8; i++)
+     setchr1(i<<10,chrcmd[i]);
+  setmirror(mirr^1);
+}
+
+static void Sync2(void)
+{
+  setprg8(0x8000,reg[6]&0x3F);
+  setprg8(0xA000,reg[7]&0x3F);
+  setchr2(0x0000,reg[0]>>1);
+  setchr2(0x8000,reg[1]>>1);
+  setchr1(0x1000,reg[2]);
+  setchr1(0x1400,reg[3]);
+  setchr1(0x1800,reg[4]);
+  setchr1(0x1C00,reg[5]);
+  setmirror(mirr^1);
+}
+
+static DECLFW(UNLSL1632CMDWrite)
+{
+  FCEU_printf("bs %04x %02x\n",A,V);     
+//  if((A&0xA131)==0xA131) brk=V;
+  if((A&0xA131)==0xA131) brk=V;
+  if(brk==2)
+  {
+  switch(A&0xE001)
+  {
+    case 0x8000: cmd=V&7; break;
+    case 0x8001: reg[cmd]=V; Sync(); break;
+    case 0xA000: mirr=V&1; break;
+    case 0xC000: IRQLatch=V; break;
+    case 0xC001: IRQReload=1; break;
+    case 0xE000: X6502_IRQEnd(FCEU_IQEXT); IRQa=0; break;
+    case 0xE001: IRQa=1; break;
+  }
+  Sync2();
+  }
+  else
+  {
+  switch(A&0xF003)
+  {
+    case 0x8000: prg0=V; break;
+    case 0xA000: prg1=V; break;
+    case 0x9000: mirr=V&1; break;
+    case 0xB000: chrcmd[0]=(chrcmd[0]&0xF0)|(V&0x0F); break;
+    case 0xB001: chrcmd[0]=(chrcmd[0]&0x0F)|(V<<4); break;
+    case 0xB002: chrcmd[1]=(chrcmd[1]&0xF0)|(V&0x0F); break;
+    case 0xB003: chrcmd[1]=(chrcmd[1]&0x0F)|(V<<4); break;
+    case 0xC000: chrcmd[2]=(chrcmd[2]&0xF0)|(V&0x0F); break;
+    case 0xC001: chrcmd[2]=(chrcmd[2]&0x0F)|(V<<4); break;
+    case 0xC002: chrcmd[3]=(chrcmd[3]&0xF0)|(V&0x0F); break;
+    case 0xC003: chrcmd[3]=(chrcmd[3]&0x0F)|(V<<4); break;
+    case 0xD000: chrcmd[4]=(chrcmd[4]&0xF0)|(V&0x0F); break;
+    case 0xD001: chrcmd[4]=(chrcmd[4]&0x0F)|(V<<4); break;
+    case 0xD002: chrcmd[5]=(chrcmd[5]&0xF0)|(V&0x0F); break;
+    case 0xD003: chrcmd[5]=(chrcmd[5]&0x0F)|(V<<4); break;
+    case 0xE000: chrcmd[6]=(chrcmd[6]&0xF0)|(V&0x0F); break;
+    case 0xE001: chrcmd[6]=(chrcmd[6]&0x0F)|(V<<4); break;
+    case 0xE002: chrcmd[7]=(chrcmd[7]&0xF0)|(V&0x0F); break;
+    case 0xE003: chrcmd[7]=(chrcmd[7]&0x0F)|(V<<4); break;
+  }
+  Sync();
+  }
+}
+
+static void UNLSL1632IRQHook(void)
+{
+ int count = IRQCount;
+ if((scanline==128)&&IRQa)X6502_IRQBegin(FCEU_IQEXT);
+ if(!count || IRQReload)
+ {
+    IRQCount = IRQLatch;
+    IRQReload = 0;
+ }
+ else
+    IRQCount--;
+ if(!IRQCount)
+ {
+    if(IRQa)
+    {
+       X6502_IRQBegin(FCEU_IQEXT);
+    }
+ }
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+static void UNLSL1632Power(void)
+{
+  setprg16(0xC000,~0);
+  SetReadHandler(0x8000,0xFFFF,CartBR);
+  SetWriteHandler(0x8000,0xFFFF,UNLSL1632CMDWrite);
+}
+
+void UNLSL1632_Init(CartInfo *info)
+{
+  info->Power=UNLSL1632Power;
+  GameHBIRQHook2=UNLSL1632IRQHook;
+  GameStateRestore=StateRestore;
+  AddExState(&StateRegs, ~0, 0, 0);
+}