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diff --git a/boards/fk23c.c b/boards/fk23c.c
index abf0859..ca6c134 100644
--- a/boards/fk23c.c
+++ b/boards/fk23c.c
@@ -1,112 +1,226 @@
-/* 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"
-#include "mmc3.h"
-
-static uint8 unromchr;
-
-static void BMCFK23CCW(uint32 A, uint8 V)
-{
-  if(EXPREGS[0]&0x40)
-    setchr8((EXPREGS[2]&0xFC)|unromchr);
-  else
-  {
-    uint16 base=(EXPREGS[2]&0x7F)<<3;
-    setchr1(A,V|base);
-    if(EXPREGS[3]&2)
-    {
-      setchr1(0x0400,EXPREGS[6]|base);
-      setchr1(0x0C00,EXPREGS[7]|base);
-    }
-  }
-}
-
-static void BMCFK23CPW(uint32 A, uint8 V)
-{
-  if(EXPREGS[0]&4)
-    setprg32(0x8000,EXPREGS[1]>>1);
-  else
-  { 
-    if(EXPREGS[0]&2)
-      setprg8(A,(V&(0x3F>>(EXPREGS[0]&3)))|(EXPREGS[1]<<1));
-    else
-      setprg8(A,V);
-    if(EXPREGS[3]&2)
-    {
-      setprg8(0xC000,EXPREGS[4]);
-      setprg8(0xE000,EXPREGS[5]);
-    }
-  }
-}
-
-static DECLFW(BMCFK23C8003Write)
-{
-  if(EXPREGS[0]&0x40)
-  {
-    unromchr=V&3;
-    FixMMC3CHR(MMC3_cmd);
-  }
-  else
-  {
-    if((A==0x8001)&&(EXPREGS[3]&2&&MMC3_cmd&8))
-    {
-      EXPREGS[4|(MMC3_cmd&3)]=V;
-      FixMMC3PRG(MMC3_cmd);
-      FixMMC3CHR(MMC3_cmd);
-    }
-    else    
-      MMC3_CMDWrite(A,V);
-  }
-}
-
-static DECLFW(BMCFK23CWrite)
-{
-  EXPREGS[A&3]=V;
-  FixMMC3PRG(MMC3_cmd);
-  FixMMC3CHR(MMC3_cmd);
-}
-
-static void BMCFK23CReset(void)
-{
-  EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=EXPREGS[3]=0;
-  EXPREGS[4]=EXPREGS[5]=EXPREGS[6]=EXPREGS[7]=0xFF;
-  MMC3RegReset();
-}
-
-static void BMCFK23CPower(void)
-{
-  EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=EXPREGS[3]=0;
-  EXPREGS[4]=EXPREGS[5]=EXPREGS[6]=EXPREGS[7]=0xFF;
-  GenMMC3Power();
-  SetWriteHandler(0x5ff0,0x5fff,BMCFK23CWrite);
-  SetWriteHandler(0x8000,0x8003,BMCFK23C8003Write);
-}
-
-void BMCFK23C_Init(CartInfo *info)
-{
-  GenMMC3_Init(info, 512, 256, 8, 0);
-  cwrap=BMCFK23CCW;
-  pwrap=BMCFK23CPW;
-  info->Power=BMCFK23CPower;
-  info->Reset=BMCFK23CReset;
-  AddExState(EXPREGS, 8, 0, "EXPR");
-  AddExState(&unromchr, 1, 0, "UNCHR");
-}
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2006 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"
+#include "mmc3.h"
+
+static uint8 unromchr;
+static uint32 dipswitch = 0;
+static uint8 *CHRRAM=NULL;
+static uint32 CHRRAMSize;
+
+static void BMCFK23CCW(uint32 A, uint8 V)
+{
+  if(EXPREGS[0]&0x40)
+    setchr8(EXPREGS[2]|unromchr);
+  else if(EXPREGS[0]&0x20) {
+    setchr1r(0x10, A, V);
+  }
+  else
+  {
+    uint16 base=(EXPREGS[2]&0x7F)<<3;
+    if(EXPREGS[3]&2)
+    {
+      int cbase=(MMC3_cmd&0x80)<<5;
+      setchr1(A,V|base);
+      setchr1(0x0000^cbase,DRegBuf[0]|base);
+      setchr1(0x0400^cbase,EXPREGS[6]|base);
+      setchr1(0x0800^cbase,DRegBuf[1]|base);
+      setchr1(0x0c00^cbase,EXPREGS[7]|base);
+    }
+    else
+      setchr1(A,V|base);
+  }
+}
+
+static void BMCFK23CPW(uint32 A, uint8 V)
+{
+  uint32 bank = (EXPREGS[1] & 0x1F);
+  uint32 hiblock = ((EXPREGS[0] & 8) << 4)|((EXPREGS[0] & 0x80) << 1)|(UNIFchrrama?((EXPREGS[2] & 0x40)<<3):0);
+  uint32 block = (EXPREGS[1] & 0x60) | hiblock;
+  uint32 extra = (EXPREGS[3] & 2);
+  switch(EXPREGS[0]&7)
+  {
+   case 0: setprg8(A, (block << 1) | (V & 0x3F));
+           if(extra)
+           {
+            setprg8(0xC000,EXPREGS[4]);
+            setprg8(0xE000,EXPREGS[5]);
+           }
+           break;
+   case 1: setprg8(A, ((hiblock | (EXPREGS[1] & 0x70)) << 1) | (V & 0x1F));
+           if(extra)
+           {
+            setprg8(0xC000,EXPREGS[4]);
+            setprg8(0xE000,EXPREGS[5]);
+           }
+           break;
+   case 2: setprg8(A, ((hiblock | (EXPREGS[1] & 0x78)) << 1) | (V & 0x0F));
+           if(extra)
+           {
+            setprg8(0xC000,EXPREGS[4]);
+            setprg8(0xE000,EXPREGS[5]);
+           }
+           break;
+   case 3: setprg16(0x8000,(bank | block));
+           setprg16(0xC000,(bank | block));
+           break;
+   case 4: setprg32(0x8000,(bank | block) >> 1);
+           break;
+  }
+  setprg8r(0x10,0x6000,A001B&3);
+}
+
+static DECLFW(BMCFK23CHiWrite)
+{
+  if(EXPREGS[0]&0x40)
+  {
+    if(EXPREGS[0]&0x30)
+      unromchr=0;
+    else
+    {
+      unromchr=V&3;
+      FixMMC3CHR(MMC3_cmd);
+    }
+  }
+  else
+  {
+    if((A==0x8001)&&(EXPREGS[3]&2)&&(MMC3_cmd&8))
+    {
+      EXPREGS[4|(MMC3_cmd&3)]=V;
+      FixMMC3PRG(MMC3_cmd);
+      FixMMC3CHR(MMC3_cmd);
+    }
+    else
+      if(A<0xC000) {
+        if(UNIFchrrama) { // hacky... strange behaviour, must be bit scramble due to pcb layot restrictions
+                          // check if it not interfer with other dumps
+          if((A==0x8000)&&(V==0x46))
+            V=0x47;
+          else if((A==0x8000)&&(V==0x47))
+            V=0x46;
+        }
+        MMC3_CMDWrite(A,V);
+        FixMMC3PRG(MMC3_cmd);
+      }
+      else
+        MMC3_IRQWrite(A,V);
+  }
+}
+
+static DECLFW(BMCFK23CWrite)
+{
+  //FCEU_printf("lo %04x:%02x\n",A,V);
+  if(dipswitch) // íóëåâîé äèï áåðåò ëþáûå çàïèñè ïî äåôîëòó, äàëüøå èäåò âûáîð
+  {
+    if(A&(1<<(dipswitch+3))) {
+      EXPREGS[A&3]=V;
+//      FCEU_printf(" reg %d set!\n",A&3);
+      FixMMC3PRG(MMC3_cmd);
+      FixMMC3CHR(MMC3_cmd);
+    }
+  }
+  else
+  {
+    EXPREGS[A&3]=V;
+//    FCEU_printf(" reg %d set!\n",A&3);
+    FixMMC3PRG(MMC3_cmd);
+    FixMMC3CHR(MMC3_cmd);
+  }
+  if(EXPREGS[3]&2)
+    EXPREGS[0] &= ~7;   // hacky hacky! if someone wants extra banking, then for sure doesn't want mode 4 for it! (allow to run A version boards on normal mapper)
+}
+
+static void BMCFK23CReset(void)
+{
+  if(dipswitch<=8)
+    dipswitch++;
+  else
+    dipswitch=0;
+  EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=EXPREGS[3]=0;
+  EXPREGS[4]=EXPREGS[5]=EXPREGS[6]=EXPREGS[7]=0xFF;
+  MMC3RegReset();
+  FixMMC3PRG(MMC3_cmd);
+  FixMMC3CHR(MMC3_cmd);
+}
+
+static void BMCFK23CPower(void)
+{
+  GenMMC3Power();
+  EXPREGS[0]=4;
+  EXPREGS[1]=0xFF;
+  EXPREGS[2]=EXPREGS[3]=0;
+  dipswitch = 0;
+  EXPREGS[4]=EXPREGS[5]=EXPREGS[6]=EXPREGS[7]=0xFF;
+  SetWriteHandler(0x5000,0x5fff,BMCFK23CWrite);
+  SetWriteHandler(0x8000,0xFFFF,BMCFK23CHiWrite);
+  FixMMC3PRG(MMC3_cmd);
+  FixMMC3CHR(MMC3_cmd);
+}
+
+static void BMCFK23CAPower(void)
+{
+  GenMMC3Power();
+  dipswitch = 0;
+  EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=EXPREGS[3]=0;
+  EXPREGS[4]=EXPREGS[5]=EXPREGS[6]=EXPREGS[7]=0xFF;
+  SetWriteHandler(0x5000,0x5fff,BMCFK23CWrite);
+  SetWriteHandler(0x8000,0xFFFF,BMCFK23CHiWrite);
+  FixMMC3PRG(MMC3_cmd);
+  FixMMC3CHR(MMC3_cmd);
+}
+
+static void BMCFK23CAClose(void)
+{
+  if(CHRRAM)
+    FCEU_gfree(CHRRAM);
+  CHRRAM=NULL;
+}
+
+void BMCFK23C_Init(CartInfo *info)
+{
+  GenMMC3_Init(info, 512, 256, 128, 0);
+  cwrap=BMCFK23CCW;
+  pwrap=BMCFK23CPW;
+  info->Power=BMCFK23CPower;
+  info->Reset=BMCFK23CReset;
+  AddExState(EXPREGS, 8, 0, "EXPR");
+  AddExState(&unromchr, 1, 0, "UCHR");
+  AddExState(&dipswitch, 1, 0, "DPSW");
+}
+
+void BMCFK23CA_Init(CartInfo *info)
+{
+  GenMMC3_Init(info, 512, 256, 128, 0);
+  cwrap=BMCFK23CCW;
+  pwrap=BMCFK23CPW;
+  info->Power=BMCFK23CAPower;
+  info->Reset=BMCFK23CReset;
+  info->Close=BMCFK23CAClose;
+  
+  CHRRAMSize=8192;
+  CHRRAM=(uint8*)FCEU_gmalloc(CHRRAMSize);
+  SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSize, 1);
+  AddExState(CHRRAM, CHRRAMSize, 0, "CRAM");
+
+  AddExState(EXPREGS, 8, 0, "EXPR");
+  AddExState(&unromchr, 1, 0, "UCHR");
+  AddExState(&dipswitch, 1, 0, "DPSW");
+}