diff --git a/.gitattributes b/.gitattributes
index 40f7939fb7b..f1b77edebf0 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -997,6 +997,8 @@ src/emu/bus/msx_cart/cartridge.c svneol=native#text/plain
 src/emu/bus/msx_cart/cartridge.h svneol=native#text/plain
 src/emu/bus/msx_cart/crossblaim.c svneol=native#text/plain
 src/emu/bus/msx_cart/crossblaim.h svneol=native#text/plain
+src/emu/bus/msx_cart/dooly.c svneol=native#text/plain
+src/emu/bus/msx_cart/dooly.h svneol=native#text/plain
 src/emu/bus/msx_cart/fmpac.c svneol=native#text/plain
 src/emu/bus/msx_cart/fmpac.h svneol=native#text/plain
 src/emu/bus/msx_cart/hfox.c svneol=native#text/plain
diff --git a/hash/msx1_cart.xml b/hash/msx1_cart.xml
index c651ad8f89e..937b2bc3391 100644
--- a/hash/msx1_cart.xml
+++ b/hash/msx1_cart.xml
@@ -17101,6 +17101,17 @@ legacy FM implementations cannot find it.
 
 	<!-- SORT -->
 
+	<software name="dooly">
+		<description>Baby Dinosaur Dooly</description>
+		<year>1991</year>
+		<publisher>Daou</publisher>
+		<part name="cart" interface="msx_cart">
+			<feature name="slot" value="dooly" />
+			<dataarea name="rom" size="32768">
+				<rom name="dooly.rom" size="32768" crc="71a1b1ec" sha1="dbac346f03950fbef81a003b4a42b2898a4e54c1" offset="0" />
+			</dataarea>
+		</part>
+	</software>
 
 
 </softwarelist>
diff --git a/src/emu/bus/bus.mak b/src/emu/bus/bus.mak
index f78f71be838..ef4b77f7722 100644
--- a/src/emu/bus/bus.mak
+++ b/src/emu/bus/bus.mak
@@ -410,6 +410,7 @@ OBJDIRS += $(BUSOBJ)/msx_cart
 BUSOBJS += $(BUSOBJ)/msx_cart/ascii.o
 BUSOBJS += $(BUSOBJ)/msx_cart/cartridge.o
 BUSOBJS += $(BUSOBJ)/msx_cart/crossblaim.o
+BUSOBJS += $(BUSOBJ)/msx_cart/dooly.o
 BUSOBJS += $(BUSOBJ)/msx_cart/fmpac.o
 BUSOBJS += $(BUSOBJ)/msx_cart/hfox.o
 BUSOBJS += $(BUSOBJ)/msx_cart/holy_quran.o
diff --git a/src/emu/bus/msx_cart/cartridge.c b/src/emu/bus/msx_cart/cartridge.c
index b9361f9cc2f..974d3313b00 100644
--- a/src/emu/bus/msx_cart/cartridge.c
+++ b/src/emu/bus/msx_cart/cartridge.c
@@ -3,6 +3,7 @@
 #include "cartridge.h"
 #include "ascii.h"
 #include "crossblaim.h"
+#include "dooly.h"
 #include "fmpac.h"
 #include "hfox.h"
 #include "holy_quran.h"
@@ -47,6 +48,7 @@ SLOT_INTERFACE_START(msx_cart)
 	SLOT_INTERFACE_INTERNAL("hfox", MSX_CART_HFOX)
 	SLOT_INTERFACE_INTERNAL("keyboard_master", MSX_CART_KEYBOARD_MASTER)
 	SLOT_INTERFACE_INTERNAL("holy_quran", MSX_CART_HOLY_QURAN)
+	SLOT_INTERFACE_INTERNAL("dooly", MSX_CART_DOOLY)
 SLOT_INTERFACE_END
 
 
diff --git a/src/emu/bus/msx_cart/dooly.c b/src/emu/bus/msx_cart/dooly.c
new file mode 100644
index 00000000000..d3e9e113aa7
--- /dev/null
+++ b/src/emu/bus/msx_cart/dooly.c
@@ -0,0 +1,66 @@
+#include "emu.h"
+#include "dooly.h"
+
+
+const device_type MSX_CART_DOOLY = &device_creator<msx_cart_dooly>;
+
+
+msx_cart_dooly::msx_cart_dooly(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+	: device_t(mconfig, MSX_CART_DOOLY, "MSX Cartridge - Dooly", tag, owner, clock, "msx_cart_dooly", __FILE__)
+	, msx_cart_interface(mconfig, *this)
+	, m_prot(0)
+{
+}
+
+
+void msx_cart_dooly::device_start()
+{
+	save_item(NAME(m_prot));
+}
+
+
+void msx_cart_dooly::device_reset()
+{
+	m_prot = 0;
+}
+
+
+void msx_cart_dooly::initialize_cartridge()
+{
+	if (get_rom_size() != 0x8000)
+	{
+		fatalerror("dooly: Invalid ROM size\n");
+	}
+}
+
+
+READ8_MEMBER(msx_cart_dooly::read_cart)
+{
+	if (offset >= 0x4000 && offset < 0xc000)
+	{
+		UINT8 data = get_rom_base()[offset - 0x4000];
+
+		switch (m_prot)
+		{
+			case 0x04:
+				data = BITSWAP8(data, 7, 6, 5, 4, 3, 1, 0, 2);
+				break;
+		}
+		return data;
+	}
+	return 0xff;
+}
+
+
+WRITE8_MEMBER(msx_cart_dooly::write_cart)
+{
+	if (offset >= 0x4000 && offset < 0xc000)
+	{
+		m_prot = data & 0x07;
+		if (m_prot != 0 && m_prot != 4)
+		{
+			logerror("msx_cart_dooly: unhandled write %02x to %04x\n", data, offset);
+		}
+	}
+}
+
diff --git a/src/emu/bus/msx_cart/dooly.h b/src/emu/bus/msx_cart/dooly.h
new file mode 100644
index 00000000000..b0e4ab749cb
--- /dev/null
+++ b/src/emu/bus/msx_cart/dooly.h
@@ -0,0 +1,30 @@
+#ifndef __MSX_CART_DOOLY_H
+#define __MSX_CART_DOOLY_H
+
+#include "bus/msx_cart/cartridge.h"
+
+
+extern const device_type MSX_CART_DOOLY;
+
+
+class msx_cart_dooly : public device_t
+						, public msx_cart_interface
+{
+public:
+	msx_cart_dooly(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+	// device-level overrides
+	virtual void device_start();
+	virtual void device_reset();
+
+	virtual void initialize_cartridge();
+
+	virtual DECLARE_READ8_MEMBER(read_cart);
+	virtual DECLARE_WRITE8_MEMBER(write_cart);
+
+private:
+	UINT8 m_prot;
+};
+
+
+#endif