X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=boards%2Fcityfighter.c;fp=boards%2Fcityfighter.c;h=11eb859cc3653b2c41f20ba2fc2c332c6160ce8b;hp=0000000000000000000000000000000000000000;hb=43725da7349c85fa13e828fdbf20cc7ac8d298d6;hpb=386f5371eb984fb9c2860c83e740890a75cd45c1

diff --git a/boards/cityfighter.c b/boards/cityfighter.c
new file mode 100644
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--- /dev/null
+++ b/boards/cityfighter.c
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+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2007 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
+ *
+ * City Fighter IV sith Sound VRC4 hacked
+ */
+
+#include "mapinc.h"
+
+static uint8 IRQCount;
+static uint8 IRQPre;
+static uint8 IRQa;
+static uint8 prg_reg, prg_mode, mirr;
+static uint8 chr_reg[8];
+
+static SFORMAT StateRegs[]=
+{
+  {&IRQCount, 1, "IRQC"},
+  {&IRQPre, 1, "IRQP"},
+  {&IRQa, 1, "IRQA"},
+  {&prg_reg, 1, "PREG"},
+  {&prg_mode, 1, "PMOD"},
+  {&mirr, 1, "MIRR"},
+  {chr_reg, 8, "CREG"},
+  {0}
+};
+
+static void Sync(void)
+{
+  setprg32(0x8000,prg_reg>>2);
+  if(!prg_mode)
+    setprg8(0xC000,prg_reg);
+  int i;
+  for(i=0; i<8; i++)
+     setchr1(i<<10,chr_reg[i]);     
+  switch (mirr)
+  {
+  case 0: setmirror(MI_V); break;
+  case 1: setmirror(MI_H); break;
+  case 2: setmirror(MI_0); break;
+  case 3: setmirror(MI_1); break;
+  }
+}
+
+static DECLFW(UNLCITYFIGHTWrite)
+{
+  switch(A&0xF00C)
+  {
+    case 0x9000: prg_reg=V&0xC; mirr=V&3; break;
+    case 0x9004:
+    case 0x9008:
+    case 0x900C: prg_reg=V&0xC; break;
+    case 0xC000:
+    case 0xC004:
+    case 0xC008:
+    case 0xC00C: prg_mode=V&1; break;
+    case 0xD000: chr_reg[0]=(chr_reg[0]&0xF0)|(V&0x0F); break;
+    case 0xD004: chr_reg[0]=(chr_reg[0]&0x0F)|(V<<4); break;
+    case 0xD008: chr_reg[1]=(chr_reg[1]&0xF0)|(V&0x0F); break;
+    case 0xD00C: chr_reg[1]=(chr_reg[1]&0x0F)|(V<<4); break;
+    case 0xA000: chr_reg[2]=(chr_reg[2]&0xF0)|(V&0x0F); break;
+    case 0xA004: chr_reg[2]=(chr_reg[2]&0x0F)|(V<<4); break;
+    case 0xA008: chr_reg[3]=(chr_reg[3]&0xF0)|(V&0x0F); break;
+    case 0xA00C: chr_reg[3]=(chr_reg[3]&0x0F)|(V<<4); break;
+    case 0xB000: chr_reg[4]=(chr_reg[4]&0xF0)|(V&0x0F); break;
+    case 0xB004: chr_reg[4]=(chr_reg[4]&0x0F)|(V<<4); break;
+    case 0xB008: chr_reg[5]=(chr_reg[5]&0xF0)|(V&0x0F); break;
+    case 0xB00C: chr_reg[5]=(chr_reg[5]&0x0F)|(V<<4); break;
+    case 0xE000: chr_reg[6]=(chr_reg[6]&0xF0)|(V&0x0F); break;
+    case 0xE004: chr_reg[6]=(chr_reg[6]&0x0F)|(V<<4); break;
+    case 0xE008: chr_reg[7]=(chr_reg[7]&0xF0)|(V&0x0F); break;
+    case 0xE00C: chr_reg[7]=(chr_reg[7]&0x0F)|(V<<4); break;
+//    case 0xF004: IRQCount=((IRQCount&0xF0)|(V&0xF)); break;
+//    case 0xF000: IRQCount=((IRQCount&0x0F)|((V&0xF)<<4)); break;
+    case 0xF008: IRQa=V&2; X6502_IRQEnd(FCEU_IQEXT); break;
+//    case 0xF00C: IRQPre=16; break;
+    default:
+      FCEU_printf("bs %04x %02x\n",A,V);
+  }
+  Sync();
+}
+
+static DECLFW(UNLCITYFIGHTWriteLo)
+{
+      FCEU_printf("bs %04x %02x\n",A,V);
+}
+
+static void UNLCITYFIGHTIRQ(void)
+{
+  //if(IRQa)
+  {
+//    IRQCount--;
+//    if((IRQCount>>1)==0)
+//      X6502_IRQBegin(FCEU_IQEXT);
+//    if(scanline==100) X6502_IRQBegin(FCEU_IQEXT);
+  }
+}
+
+static void UNLCITYFIGHTPower(void)
+{
+  prg_reg = 0;
+  Sync();
+  SetReadHandler(0x8000,0xFFFF,CartBR);
+  SetWriteHandler(0x4020,0x7FFF,UNLCITYFIGHTWriteLo);
+  SetWriteHandler(0x8000,0xFFFF,UNLCITYFIGHTWrite);
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+void UNLCITYFIGHT_Init(CartInfo *info)
+{
+  info->Power=UNLCITYFIGHTPower;
+  GameHBIRQHook=UNLCITYFIGHTIRQ;
+  GameStateRestore=StateRestore;
+  AddExState(&StateRegs, ~0, 0, 0);
+}