diff --git a/Fceuwin.dev b/Fceuwin.dev
index add2902..d968e62 100644
--- a/Fceuwin.dev
+++ b/Fceuwin.dev
@@ -1,7 +1,7 @@
 [Project]
 FileName=Fceuwin.dev
 Name=Fceu
-UnitCount=295
+UnitCount=297
 Type=0
 Ver=1
 ObjFiles=
@@ -2648,9 +2648,9 @@ OverrideBuildCmd=0
 BuildCmd=
 
 [Unit297]
-FileName=src\boards\246.c
+FileName=src\boards\158B.c
 CompileCpp=0
-Folder=boards
+Folder=boards/mmc3 based
 Compile=1
 Link=1
 Priority=1000
diff --git a/src/boards/158B.c b/src/boards/158B.c
new file mode 100644
index 0000000..e7fd684
--- /dev/null
+++ b/src/boards/158B.c
@@ -0,0 +1,71 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2015 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * "Blood Of Jurassic" protected MMC3 based board (GD-98 Cart ID, 158B PCB ID)
+ *
+ */
+
+#include "mapinc.h"
+#include "mmc3.h"
+
+static uint8 lut[8] = { 0x00, 0x00, 0x00, 0x01, 0x02, 0x04, 0x0F, 0x00 };
+
+static void UNL158BPW(uint32 A, uint8 V) {
+	if (EXPREGS[0] & 0x80) {
+		uint32 bank = EXPREGS[0] & 7; 
+		if(EXPREGS[0] & 0x20) { // 32Kb mode
+			setprg32(0x8000, bank >> 1);
+		} else {				// 16Kb mode
+			setprg16(0x8000, bank);
+			setprg16(0xC000, bank);
+		}
+	} else {
+		setprg8(A, V & 0xF);
+	}
+}
+
+static DECLFW(UNL158BProtWrite) {
+	EXPREGS[A & 7] = V;
+	switch(A & 7) {
+	case 0:
+		FixMMC3PRG(MMC3_cmd);
+		break;
+	case 7:
+		FCEU_printf("UNK PROT WRITE\n");
+		break;
+	}
+
+}
+
+static DECLFR(UNL158BProtRead) {
+	return X.DB | lut[A & 7];
+}
+
+static void UNL158BPower(void) {
+	GenMMC3Power();
+	SetWriteHandler(0x5000, 0x5FFF, UNL158BProtWrite);
+	SetReadHandler(0x5000, 0x5FFF, UNL158BProtRead);
+}
+
+void UNL158B_Init(CartInfo *info) {
+	GenMMC3_Init(info, 128, 128, 0, 0);
+	pwrap = UNL158BPW;
+	info->Power = UNL158BPower;
+	AddExState(EXPREGS, 6, 0, "EXPR");
+}
diff --git a/src/boards/mmc1.c b/src/boards/mmc1.c
index 41877fe..0115ad9 100644
--- a/src/boards/mmc1.c
+++ b/src/boards/mmc1.c
@@ -191,6 +191,10 @@ static int DetectMMC1WRAMSize(uint32 crc32) {
 		FCEU_printf(" >8KB external WRAM present.  Use UNIF if you hack the ROM image.\n");
 		return(16);
 		break;
+	case 0xd1e50064:            /* Dezaemon */
+		FCEU_printf(" >8KB external WRAM present.  Use UNIF if you hack the ROM image.\n");
+		return(32);
+		break;
 	default: return(8);
 	}
 }
diff --git a/src/unif.c b/src/unif.c
index 0c98e8a..8808a2e 100644
--- a/src/unif.c
+++ b/src/unif.c
@@ -450,6 +450,7 @@ static BMAPPING bmap[] = {
 	{ "VRC7", UNLVRC7_Init, 0 },
 	{ "YOKO", UNLYOKO_Init, 0 },
    { "COOLBOY", COOLBOY_Init, BMCFLAG_256KCHRR },
+        { "158B", UNL158B_Init, 0 },
 
 #ifdef COPYFAMI
 	{ "COPYFAMI_MMC3", MapperCopyFamiMMC3_Init, 0 },
diff --git a/src/unif.h b/src/unif.h
index 8cce071..7821507 100644
--- a/src/unif.h
+++ b/src/unif.h
@@ -146,6 +146,7 @@ void UNLVRC7_Init(CartInfo *info);
 void UNLYOKO_Init(CartInfo *info);
 void UNROM_Init(CartInfo *info);
 void COOLBOY_Init(CartInfo *info);
+void UNL158B_Init(CartInfo *info);
 
 #ifdef COPYFAMI
 void MapperCopyFamiMMC3_Init(CartInfo *info);