X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2F222.c;fp=boards%2F222.c;h=e2307517a35b3e4889c5ce4f4606d41ba0936ac2;hp=fd3cc8ac40cd670abbb40cdac268b63b57913785;hb=386f5371eb984fb9c2860c83e740890a75cd45c1;hpb=eec2623f6183dd0f9494b99065a16bf90f2a1ccf

diff --git a/boards/222.c b/boards/222.c
index fd3cc8a..e230751 100644
--- a/boards/222.c
+++ b/boards/222.c
@@ -1,99 +1,106 @@
-/* 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 uint16 IRQCount;
-static uint8 IRQa;
-static uint8 prg_reg[2];
-static uint8 chr_reg[8];
-
-static SFORMAT StateRegs[]=
-{
-  {&IRQCount, 2, "IRQC"},
-  {&IRQa, 2, "IRQA"},
-  {prg_reg, 2, "PRG"},
-  {chr_reg, 8, "CHR"},
-  {0}
-};
-
-static void M222IRQ(void)
-{
-  if(IRQa)
-  {
-    IRQCount++;
-    if(IRQCount>=240)
-    {
-      X6502_IRQBegin(FCEU_IQEXT);
-      IRQa=0;
-    }
-  }
-}
-
-static void Sync(void)
-{
-  setprg8(0x8000,prg_reg[0]);
-  setprg8(0xA000,prg_reg[1]);
-  int i;
-  for(i=0; i<8; i++)
-     setchr1(i<<10,chr_reg[i]);     
-}
-
-static DECLFW(M222Write)
-{
-  switch(A&0xF003)
-  {
-    case 0x8000: prg_reg[0]=V; break;
-    case 0xA000: prg_reg[1]=V; break;
-    case 0xB000: chr_reg[0]=V; break;
-    case 0xB002: chr_reg[1]=V; break;
-    case 0xC000: chr_reg[2]=V; break;
-    case 0xC002: chr_reg[3]=V; break;
-    case 0xD000: chr_reg[4]=V; break;
-    case 0xD002: chr_reg[5]=V; break;
-    case 0xE000: chr_reg[6]=V; break;
-    case 0xE002: chr_reg[7]=V; break;
-    case 0xF000: IRQCount=IRQa=V;
-                 X6502_IRQEnd(FCEU_IQEXT);
-                 break;
-  }
-  Sync();
-}
-
-static void M222Power(void)
-{
-  setprg16(0xC000,~0);
-  SetReadHandler(0x8000,0xFFFF,CartBR);
-  SetWriteHandler(0x8000,0xFFFF,M222Write);
-}
-
-static void StateRestore(int version)
-{
-  Sync();
-}
-
-void Mapper222_Init(CartInfo *info)
-{
-  info->Power=M222Power;
-  GameHBIRQHook=M222IRQ;
-  GameStateRestore=StateRestore;
-  AddExState(&StateRegs, ~0, 0, 0);
-}
+/* 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * (VRC4 mapper)
+ */
+
+#include "mapinc.h"
+
+static uint8 IRQCount;
+static uint8 IRQa;
+static uint8 prg_reg[2];
+static uint8 chr_reg[8];
+static uint8 mirr;
+
+static SFORMAT StateRegs[]=
+{
+  {&IRQCount, 1, "IRQC"},
+  {&IRQa, 1, "IRQA"},
+  {prg_reg, 2, "PRG"},
+  {chr_reg, 8, "CHR"},
+  {&mirr, 1, "MIRR"},
+  {0}
+};
+
+static void M222IRQ(void)
+{
+  if(IRQa)
+  {
+    IRQCount++;
+    if(IRQCount>=238)
+    {
+      X6502_IRQBegin(FCEU_IQEXT);
+//      IRQa=0;
+    }
+  }
+}
+
+static void Sync(void)
+{
+  int i;
+  setprg8(0x8000,prg_reg[0]);
+  setprg8(0xA000,prg_reg[1]);
+  for(i=0; i<8; i++)
+     setchr1(i<<10,chr_reg[i]);
+  setmirror(mirr^1);
+}
+
+static DECLFW(M222Write)
+{
+  switch(A&0xF003)
+  {
+    case 0x8000: prg_reg[0]=V; break;
+    case 0x9000: mirr=V&1;     break;
+    case 0xA000: prg_reg[1]=V; break;
+    case 0xB000: chr_reg[0]=V; break;
+    case 0xB002: chr_reg[1]=V; break;
+    case 0xC000: chr_reg[2]=V; break;
+    case 0xC002: chr_reg[3]=V; break;
+    case 0xD000: chr_reg[4]=V; break;
+    case 0xD002: chr_reg[5]=V; break;
+    case 0xE000: chr_reg[6]=V; break;
+    case 0xE002: chr_reg[7]=V; break;
+//    case 0xF000: FCEU_printf("%04x:%02x %d\n",A,V,scanline); IRQa=V; if(!V)IRQPre=0; X6502_IRQEnd(FCEU_IQEXT); break;
+//  /  case 0xF001: FCEU_printf("%04x:%02x %d\n",A,V,scanline); IRQCount=V; break;
+//    case 0xF002: FCEU_printf("%04x:%02x %d\n",A,V,scanline); break;
+//    case 0xD001: IRQa=V; X6502_IRQEnd(FCEU_IQEXT); FCEU_printf("%04x:%02x %d\n",A,V,scanline); break;
+//    case 0xC001: IRQPre=16; FCEU_printf("%04x:%02x %d\n",A,V,scanline); break;
+    case 0xF000: IRQa=IRQCount=V; if(scanline<240) IRQCount-=8; else IRQCount+=4; X6502_IRQEnd(FCEU_IQEXT); break;
+  }
+  Sync();
+}
+
+static void M222Power(void)
+{
+  setprg16(0xC000,~0);
+  SetReadHandler(0x8000,0xFFFF,CartBR);
+  SetWriteHandler(0x8000,0xFFFF,M222Write);
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+void Mapper222_Init(CartInfo *info)
+{
+  info->Power=M222Power;
+  GameHBIRQHook=M222IRQ;
+  GameStateRestore=StateRestore;
+  AddExState(&StateRegs, ~0, 0, 0);
+}