X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2Fbonza.c;fp=boards%2Fbonza.c;h=5e572f14c079368c620780dab559b7d2b9d75aae;hp=0000000000000000000000000000000000000000;hb=d97315ac0bca825d2d50a44453bc5652946e2c67;hpb=890e37ba2b8ea1c7593dc05926d7431e3bd00bfb

diff --git a/boards/bonza.c b/boards/bonza.c
new file mode 100644
index 0000000..5e572f1
--- /dev/null
+++ b/boards/bonza.c
@@ -0,0 +1,139 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2002 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 prg_reg;
+static uint8 chr_reg;
+
+static uint8 sim0reg, sim0bit, sim0byte, sim0parity, sim0bcnt;
+static uint16 sim0data;
+static uint8 sim0array[128] =
+{
+  0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+  0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+  0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+  0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+  0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+  0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+  0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+  0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0xAA,
+};
+
+static SFORMAT StateRegs[]=
+{
+  {&prg_reg, 1, "PREG"},
+  {&chr_reg, 1, "CREG"},
+  {0}
+};
+
+static void Sync(void)
+{
+  setprg32(0x8000, prg_reg);
+  setchr8(chr_reg);
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+static DECLFW(M216WriteHi)
+{
+// FCEU_printf("%04x:%04x\n",A,V);
+  prg_reg=A&1;
+  chr_reg=(A&0x0E)>>1;
+  Sync();
+}
+
+static DECLFW(M216Write5000)
+{
+// FCEU_printf("WRITE: %04x:%04x\n",A,V);
+  sim0reg=V;
+  if(!sim0reg)
+  {
+    sim0bit=sim0byte=sim0parity=0;
+    sim0data=sim0array[0];
+    sim0bcnt=0x80;
+  }
+  else if(sim0reg&0x20)
+  {
+    sim0bcnt=0x20;
+  }
+}
+
+static DECLFR(M216Read5000)
+{
+  if(sim0reg&0x60)
+  {
+    sim0reg=(sim0reg^(sim0reg<<1))&0x40;
+    return sim0reg;
+  }
+  else
+  {
+    uint8 sim0out=0;
+    if(sim0bit<8)
+    {
+//       sim0data=((sim0array[sim0byte]<<(sim0bit))&0x80)>>1;
+      sim0out=(sim0data&1)<<6;
+      sim0data>>=1;
+      sim0bit++;
+      sim0parity+=sim0data;
+    }
+    else if(sim0bit==8)
+    {
+      sim0bit++;
+      sim0out=sim0parity&1;
+    }
+    else if(sim0bit==9)
+    {
+      if(sim0byte==sim0bcnt)
+        sim0out=0x60;
+      else
+      {
+        sim0bit=0;
+        sim0byte++;
+        sim0data=sim0array[sim0byte];
+        sim0out=0;
+      }
+    }
+//    FCEU_printf("READ: %04x (%04x-%02x,%04x)\n",A,X.PC,sim0out,sim0byte);
+    return sim0out;
+  }
+}
+
+static void Power(void)
+{
+  prg_reg = 0;
+  chr_reg = 0;
+  Sync();
+  SetReadHandler(0x8000,0xFFFF,CartBR);
+  SetWriteHandler(0x8000,0xFFFF,M216WriteHi);
+  SetWriteHandler(0x5000,0x5000,M216Write5000);
+  SetReadHandler(0x5000,0x5000,M216Read5000);
+}
+
+
+void Mapper216_Init(CartInfo *info)
+{
+  info->Power=Power;
+  GameStateRestore=StateRestore;
+  AddExState(&StateRegs, ~0, 0, 0);
+}