X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=boards%2F8237.c;h=3c401e66488e3c4068168e5aabdd53e00bd9c0f4;hb=0d6a66c2a80f50ae51327cd406f9df14d99ad02e;hp=5b4e2df19f85266c62495cd88d4c1bae155fcb47;hpb=d97315ac0bca825d2d50a44453bc5652946e2c67;p=fceu.git

diff --git a/boards/8237.c b/boards/8237.c
index 5b4e2df..3c401e6 100644
--- a/boards/8237.c
+++ b/boards/8237.c
@@ -1,7 +1,7 @@
 /* FCE Ultra - NES/Famicom Emulator
  *
  * Copyright notice for this file:
- *  Copyright (C) 2005 CaH4e3
+ *  Copyright (C) 2011 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
@@ -16,52 +16,153 @@
  * 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
+ *
+ * Super Game (Sugar Softec) protected mapper
+ * Pocahontas 2 (Unl) [U][!], etc.
+ * TODO: 9in1 LION KING HANGS!
  */
 
 #include "mapinc.h"
 #include "mmc3.h"
 
 static uint8 cmdin;
-static uint8 UNL8237_perm[8] = {0, 2, 6, 1, 7, 3, 4, 5};
+
+static uint8 regperm[8][8] = 
+  {
+    {0, 1, 2, 3, 4, 5, 6, 7},
+    {0, 2, 6, 1, 7, 3, 4, 5},
+    {0, 5, 4, 1, 7, 2, 6, 3}, // unused
+    {0, 6, 3, 7, 5, 2, 4, 1},
+    {0, 2, 5, 3, 6, 1, 7, 4},
+    {0, 1, 2, 3, 4, 5, 6, 7}, // empty
+    {0, 1, 2, 3, 4, 5, 6, 7}, // empty
+    {0, 1, 2, 3, 4, 5, 6, 7}, // empty
+  };
+
+static uint8 adrperm[8][8] = 
+  {
+    {0, 1, 2, 3, 4, 5, 6, 7},
+    {3, 2, 0, 4, 1, 5, 6, 7},
+    {0, 1, 2, 3, 4, 5, 6, 7}, // unused
+    {5, 0, 1, 2, 3, 7, 6, 4},
+    {3, 1, 0, 5, 2, 4, 6, 7},
+    {0, 1, 2, 3, 4, 5, 6, 7}, // empty
+    {0, 1, 2, 3, 4, 5, 6, 7}, // empty
+    {0, 1, 2, 3, 4, 5, 6, 7}, // empty
+  };
 
 static void UNL8237CW(uint32 A, uint8 V)
 {
-  setchr1(A,((EXPREGS[1]&4)<<6)|V);
+  if(EXPREGS[0]&0x40)
+    setchr1(A,((EXPREGS[1]&0xc)<<6)|(V&0x7F)|((EXPREGS[1]&0x20)<<2));
+  else
+    setchr1(A,((EXPREGS[1]&0xc)<<6)|V);
 }
 
 static void UNL8237PW(uint32 A, uint8 V)
 {
-  if(EXPREGS[0]&0x80)
+  if(EXPREGS[0]&0x40)
   {
-    if(EXPREGS[0]&0x20)
-      setprg32(0x8000,(EXPREGS[0]&0xF)>>1);
+    uint8 sbank = (EXPREGS[1]&0x10);
+    if(EXPREGS[0]&0x80)
+    {
+      uint8 bank = ((EXPREGS[1]&3)<<4)|(EXPREGS[0]&0x7)|(sbank>>1);
+      if(EXPREGS[0]&0x20)
+        setprg32(0x8000,bank>>1);
+      else
+      {
+        setprg16(0x8000,bank);
+        setprg16(0xC000,bank);
+      }
+    }
     else
+      setprg8(A,((EXPREGS[1]&3)<<5)|(V&0x0F)|sbank);
+  }
+  else
+  {
+    if(EXPREGS[0]&0x80)
     {
-      setprg16(0x8000,(EXPREGS[0]&0x1F));
-      setprg16(0xC000,(EXPREGS[0]&0x1F));
+      uint8 bank = ((EXPREGS[1]&3)<<4)|(EXPREGS[0]&0xF);
+      if(EXPREGS[0]&0x20)
+        setprg32(0x8000,bank>>1);
+      else
+      {
+        setprg16(0x8000,bank);
+        setprg16(0xC000,bank);
+      }
     }
+    else
+      setprg8(A,((EXPREGS[1]&3)<<5)|(V&0x1F));
   }
+}
+
+static void UNL8237ACW(uint32 A, uint8 V)
+{
+  if(EXPREGS[0]&0x40)
+    setchr1(A,((EXPREGS[1]&0xE)<<7)|(V&0x7F)|((EXPREGS[1]&0x20)<<2));
   else
-    setprg8(A,V&0x3F);
+    setchr1(A,((EXPREGS[1]&0xE)<<7)|V);
 }
 
+static void UNL8237APW(uint32 A, uint8 V)
+{
+  if(EXPREGS[0]&0x40)
+  {
+    uint8 sbank = (EXPREGS[1]&0x10);
+    if(EXPREGS[0]&0x80)
+    {
+      uint8 bank = ((EXPREGS[1]&3)<<4)|((EXPREGS[1]&8)<<3)|(EXPREGS[0]&0x7)|(sbank>>1);
+      if(EXPREGS[0]&0x20) {
+//        FCEU_printf("8000:%02X\n",bank>>1);
+        setprg32(0x8000,bank>>1);
+      }
+      else
+      {
+//        FCEU_printf("8000-C000:%02X\n",bank);
+        setprg16(0x8000,bank);
+        setprg16(0xC000,bank);
+      }
+    }
+    else {
+//      FCEU_printf("%04x:%02X\n",A,((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x0F)|sbank);
+      setprg8(A,((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x0F)|sbank);
+    }
+  }
+  else
+  {
+    if(EXPREGS[0]&0x80)
+    {
+      uint8 bank = ((EXPREGS[1]&3)<<4)|((EXPREGS[1]&8)<<3)|(EXPREGS[0]&0xF);
+      if(EXPREGS[0]&0x20) {
+//        FCEU_printf("8000:%02X\n",(bank>>1)&0x07);
+        setprg32(0x8000,bank>>1);
+      }
+      else
+      {
+//        FCEU_printf("8000-C000:%02X\n",bank&0x0F);
+        setprg16(0x8000,bank);
+        setprg16(0xC000,bank);
+      }
+    }
+    else {
+//      FCEU_printf("%04X:%02X\n",A,(((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x1F))&0x1F);
+      setprg8(A,((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x1F));
+    }
+  }
+}
 static DECLFW(UNL8237Write)
 {
-  if((A&0xF000)==0xF000)
-    IRQCount=V;
-  else if((A&0xF000)==0xE000)
-    X6502_IRQEnd(FCEU_IQEXT);
-  else switch(A&0xE001)
+  uint8 dat = V;
+  uint8 adr = adrperm[EXPREGS[2]][((A>>12)&6)|(A&1)];
+  uint16 addr = (adr & 1)|((adr & 6)<<12)|0x8000;
+  if(adr < 4)
   {
-    case 0x8000: setmirror(((V|(V>>7))&1)^1); break;
-    case 0xA000: MMC3_CMDWrite(0x8000,(V&0xC0)|(UNL8237_perm[V&7])); cmdin=1; break;
-    case 0xC000: if(cmdin)
-                 {
-                   MMC3_CMDWrite(0x8001,V);
-                   cmdin=0;
-                 }
-                 break;
+    if(!adr)
+      dat = (dat & 0xC0)|(regperm[EXPREGS[2]][dat & 7]);
+    MMC3_CMDWrite(addr,dat);
   }
+  else 
+    MMC3_IRQWrite(addr,dat);
 }
 
 static DECLFW(UNL8237ExWrite)
@@ -69,14 +170,15 @@ static DECLFW(UNL8237ExWrite)
   switch(A)
   {
     case 0x5000: EXPREGS[0]=V; FixMMC3PRG(MMC3_cmd); break;
-    case 0x5001: EXPREGS[1]=V; FixMMC3CHR(MMC3_cmd); break;
+    case 0x5001: EXPREGS[1]=V; FixMMC3PRG(MMC3_cmd); FixMMC3CHR(MMC3_cmd); break;
+    case 0x5007: EXPREGS[2]=V; break;
   }
 }
 
 static void UNL8237Power(void)
 {
-  IRQa=1;
-  EXPREGS[0]=EXPREGS[1]=0;
+  EXPREGS[0]=EXPREGS[2]=0;
+  EXPREGS[1]=3;
   GenMMC3Power();
   SetWriteHandler(0x8000,0xFFFF,UNL8237Write);
   SetWriteHandler(0x5000,0x7FFF,UNL8237ExWrite);
@@ -89,5 +191,15 @@ void UNL8237_Init(CartInfo *info)
   pwrap=UNL8237PW;
   info->Power=UNL8237Power;
   AddExState(EXPREGS, 3, 0, "EXPR");
-  AddExState(&cmdin, 1, 0, "CMDIN");
+  AddExState(&cmdin, 1, 0, "CMDI");
+}
+
+void UNL8237A_Init(CartInfo *info)
+{
+  GenMMC3_Init(info, 256, 256, 0, 0);
+  cwrap=UNL8237ACW;
+  pwrap=UNL8237APW;
+  info->Power=UNL8237Power;
+  AddExState(EXPREGS, 3, 0, "EXPR");
+  AddExState(&cmdin, 1, 0, "CMDI");
 }