/* 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
* 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)
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);
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");
}
notaz.gp2x.de / fceu.git / blobdiff