diff --git a/scripts/target/mame/arcade.lua b/scripts/target/mame/arcade.lua
index 1b3c27aaf9b..b1c1652310a 100644
--- a/scripts/target/mame/arcade.lua
+++ b/scripts/target/mame/arcade.lua
@@ -838,6 +838,7 @@ files {
 	MAME_DIR .. "src/mame/video/equites.c",
 	MAME_DIR .. "src/mame/drivers/meijinsn.c",
 	MAME_DIR .. "src/mame/drivers/shougi.c",
+	MAME_DIR .. "src/mame/machine/alpha8201.c",
 }
 
 createMAMEProjects(_target, _subtarget, "amiga")
diff --git a/src/mame/drivers/shougi.c b/src/mame/drivers/shougi.c
index 94d2dd38df0..8eb15db4950 100644
--- a/src/mame/drivers/shougi.c
+++ b/src/mame/drivers/shougi.c
@@ -80,7 +80,7 @@ PROM  : Type MB7051
 
 #include "emu.h"
 #include "cpu/alph8201/alph8201.h"
-//#include "cpu/hmcs40/hmcs40.h"
+#include "machine/alpha8201.h"
 #include "cpu/z80/z80.h"
 #include "sound/ay8910.h"
 #include "video/resnet.h"
@@ -402,6 +402,8 @@ static MACHINE_CONFIG_START( shougi, shougi_state )
 
 	MCFG_CPU_ADD("mcu", ALPHA8201L, XTAL_10MHz/4/8)
 	MCFG_CPU_PROGRAM_MAP(mcu_map)
+	
+	MCFG_DEVICE_ADD("prot", ALPHA_8201, XTAL_10MHz/4/8)
 
 	MCFG_QUANTUM_PERFECT_CPU("maincpu")
 	MCFG_WATCHDOG_VBLANK_INIT(16) // assuming it's the same as champbas
@@ -451,6 +453,9 @@ ROM_START( shougi )
 	ROM_REGION( 0x2000, "mcu", 0 )
 	ROM_LOAD( "alpha-8201__44801a75__2f25.bin", 0x0000, 0x2000, CRC(b77931ac) SHA1(405b02585e80d95a2821455538c5c2c31ce262d1) )
 
+	ROM_REGION( 0x2000, "prot:mcu", 0 )
+	ROM_LOAD( "alpha-8201__44801a75__2f25.bin", 0x0000, 0x2000, CRC(b77931ac) SHA1(405b02585e80d95a2821455538c5c2c31ce262d1) )
+
 	ROM_REGION( 0x0020, "proms", 0 )
 	ROM_LOAD( "pr.2l",   0x0000, 0x0020, CRC(cd3559ff) SHA1(a1291b06a8a337943660b2ef62c94c49d58a6fb5) )
 ROM_END
@@ -474,6 +479,9 @@ ROM_START( shougi2 )
 	ROM_REGION( 0x2000, "mcu", 0 )
 	ROM_LOAD( "alpha-8201__44801a75__2f25.bin", 0x0000, 0x2000, CRC(b77931ac) SHA1(405b02585e80d95a2821455538c5c2c31ce262d1) )
 
+	ROM_REGION( 0x2000, "prot:mcu", 0 )
+	ROM_LOAD( "alpha-8201__44801a75__2f25.bin", 0x0000, 0x2000, CRC(b77931ac) SHA1(405b02585e80d95a2821455538c5c2c31ce262d1) )
+
 	ROM_REGION( 0x0020, "proms", 0 )
 	ROM_LOAD( "pr.2l",   0x0000, 0x0020, CRC(cd3559ff) SHA1(a1291b06a8a337943660b2ef62c94c49d58a6fb5) )
 ROM_END
diff --git a/src/mame/machine/alpha8201.c b/src/mame/machine/alpha8201.c
new file mode 100644
index 00000000000..a7e9b3005d1
--- /dev/null
+++ b/src/mame/machine/alpha8201.c
@@ -0,0 +1,79 @@
+// license:BSD-3-Clause
+// copyright-holders:hap
+/***************************************************************************
+
+    Alpha Denshi ALPHA-8201 family protection emulation
+
+----------------------------------------------------------------------------
+
+abc
+
+
+TODO:
+- x
+
+***************************************************************************/
+
+#include "cpu/hmcs40/hmcs40.h"
+#include "alpha8201.h"
+
+/**************************************************************************/
+
+const device_type ALPHA_8201 = &device_creator<alpha_8201_device>;
+
+//-------------------------------------------------
+//  alpha_8201_device - constructor
+//-------------------------------------------------
+
+alpha_8201_device::alpha_8201_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+	: device_t(mconfig, ALPHA_8201, "ALPHA-8201", tag, owner, clock, "alpha8201", __FILE__),
+	m_mcu(*this, "mcu")
+{
+}
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void alpha_8201_device::device_start()
+{
+	m_shared_ram = auto_alloc_array_clear(machine(), UINT8, 0x400);
+
+	// register for savestates
+	save_pointer(NAME(m_shared_ram), 0x400);
+}
+
+// machine config additions
+static MACHINE_CONFIG_FRAGMENT(alpha8201)
+
+	MCFG_CPU_ADD("mcu", HD44801, DERIVED_CLOCK(1,1))
+MACHINE_CONFIG_END
+
+machine_config_constructor alpha_8201_device::device_mconfig_additions() const
+{
+	return MACHINE_CONFIG_NAME(alpha8201);
+}
+
+//-------------------------------------------------
+//  device_reset - device-specific reset
+//-------------------------------------------------
+
+void alpha_8201_device::device_reset()
+{
+	m_mcu->set_input_line(0, CLEAR_LINE);
+}
+
+
+/***************************************************************************
+
+  Internal I/O
+
+***************************************************************************/
+
+
+
+/***************************************************************************
+
+  I/O for External Interface
+
+***************************************************************************/
diff --git a/src/mame/machine/alpha8201.h b/src/mame/machine/alpha8201.h
new file mode 100644
index 00000000000..ff072218643
--- /dev/null
+++ b/src/mame/machine/alpha8201.h
@@ -0,0 +1,38 @@
+// license:BSD-3-Clause
+// copyright-holders:hap
+/***************************************************************************
+
+    Alpha Denshi ALPHA-8201 family protection emulation
+
+***************************************************************************/
+
+#ifndef _ALPHA8201_H_
+#define _ALPHA8201_H_
+
+#include "emu.h"
+
+class alpha_8201_device : public device_t
+{
+public:
+	alpha_8201_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+	~alpha_8201_device() {}
+
+protected:
+	// device-level overrides
+	virtual void device_start();
+	virtual void device_reset();
+	virtual machine_config_constructor device_mconfig_additions() const;
+
+private:
+	// devices/pointers
+	required_device<cpu_device> m_mcu;
+
+	// internal state
+	UINT8* m_shared_ram;
+};
+
+
+extern const device_type ALPHA_8201;
+
+
+#endif /* _ALPHA8201_H_ */