diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 9c6c72e1005..8bfd3a9ceb9 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -4597,6 +4597,7 @@ files {
 	MAME_DIR .. "src/mame/drivers/didact.cpp",
 	MAME_DIR .. "src/mame/drivers/digel804.cpp",
 	MAME_DIR .. "src/mame/drivers/digilog320.cpp",
+	MAME_DIR .. "src/mame/drivers/digilog400.cpp",
 	MAME_DIR .. "src/mame/machine/digilog_kbd.cpp",
 	MAME_DIR .. "src/mame/machine/digilog_kbd.h",
 	MAME_DIR .. "src/mame/drivers/digijet.cpp",
diff --git a/src/mame/drivers/digilog400.cpp b/src/mame/drivers/digilog400.cpp
new file mode 100644
index 00000000000..eafbd3fbd1d
--- /dev/null
+++ b/src/mame/drivers/digilog400.cpp
@@ -0,0 +1,162 @@
+// license: BSD-3-Clause
+// copyright-holders: Dirk Best
+/****************************************************************************
+
+    Digilog 400
+
+    Protocol analyzer
+
+    Skeleton driver
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/i86/i186.h"
+#include "machine/digilog_kbd.h"
+#include "emupal.h"
+
+
+namespace {
+
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+class digilog400_state : public driver_device
+{
+public:
+	digilog400_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag),
+		m_maincpu(*this, "maincpu"),
+		m_subcpu(*this, "subcpu")
+	{ }
+
+	void digilog400(machine_config &config);
+
+protected:
+	virtual void machine_start() override;
+	virtual void machine_reset() override;
+
+private:
+	required_device<i80186_cpu_device> m_maincpu;
+	required_device<i80186_cpu_device> m_subcpu;
+
+	void main_mem_map(address_map &map);
+	void main_io_map(address_map &map);
+	void sub_mem_map(address_map &map);
+	void sub_io_map(address_map &map);
+};
+
+
+//**************************************************************************
+//  ADDRESS MAPS
+//**************************************************************************
+
+void digilog400_state::main_mem_map(address_map &map)
+{
+	map(0xd0000, 0xfffff).rom().region("maincpu", 0);
+}
+
+void digilog400_state::main_io_map(address_map &map)
+{
+}
+
+void digilog400_state::sub_mem_map(address_map &map)
+{
+	map(0xe0000, 0xfffff).rom().region("subcpu", 0);
+}
+
+void digilog400_state::sub_io_map(address_map &map)
+{
+}
+
+
+//**************************************************************************
+//  VIDEO EMULATION
+//**************************************************************************
+
+static const gfx_layout char_layout =
+{
+	8, 12,
+	RGN_FRAC(1, 1),
+	1,
+	{ 0 },
+	{ 7, 6, 5, 4, 3, 2, 1, 0 },
+	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8 },
+	8 * 16
+};
+
+static GFXDECODE_START(chars)
+	GFXDECODE_ENTRY("chargen", 0, char_layout, 0, 1)
+GFXDECODE_END
+
+
+//**************************************************************************
+//  MACHINE EMULATION
+//**************************************************************************
+
+void digilog400_state::machine_start()
+{
+}
+
+void digilog400_state::machine_reset()
+{
+}
+
+
+//**************************************************************************
+//  MACHINE DEFINTIONS
+//**************************************************************************
+
+void digilog400_state::digilog400(machine_config &config)
+{
+	I80186(config, m_maincpu, 16_MHz_XTAL);
+	m_maincpu->set_addrmap(AS_PROGRAM, &digilog400_state::main_mem_map);
+	m_maincpu->set_addrmap(AS_IO, &digilog400_state::main_io_map);
+
+	I80186(config, m_subcpu, 16_MHz_XTAL);
+	m_subcpu->set_addrmap(AS_PROGRAM, &digilog400_state::sub_mem_map);
+	m_subcpu->set_addrmap(AS_IO, &digilog400_state::sub_io_map);
+
+	PALETTE(config, "palette", palette_device::MONOCHROME_HIGHLIGHT);
+
+	GFXDECODE(config, "gfxdecode", "palette", chars);
+
+	DIGILOG_KBD(config, "kbd");
+}
+
+
+//**************************************************************************
+//  ROM DEFINITIONS
+//**************************************************************************
+
+ROM_START( digilog400 )
+	ROM_REGION(0x30000, "maincpu", 0)
+	ROM_LOAD16_BYTE("24-1155-02_j.bin", 0x00000, 0x08000, CRC(2c59f3f3) SHA1(7f2b611645ffd1d560e2fbdf76f8c5e3d07ea381))
+	ROM_LOAD16_BYTE("24-1155-01_j.bin", 0x00001, 0x08000, CRC(f4e92608) SHA1(c10b72b287a9f25c3075a9b17648565a1ed3ffb1))
+	ROM_LOAD16_BYTE("24-1155-04_j.bin", 0x10000, 0x08000, CRC(b5fb0ad6) SHA1(fa11efc45d7bdf8364ae7457519785b6638da222))
+	ROM_LOAD16_BYTE("24-1155-03_j.bin", 0x10001, 0x08000, CRC(bef7d565) SHA1(a34e4798a7111ffea5aa1c608d192884cae6a80b))
+	ROM_LOAD16_BYTE("24-1155-06_j.bin", 0x20000, 0x08000, CRC(a38d1a9b) SHA1(b5bf733757fe54d4dd5e876f46fdd674e57f9525))
+	ROM_LOAD16_BYTE("24-1155-05_j.bin", 0x20001, 0x08000, CRC(e7238778) SHA1(a56613589886f713904e4e610292971f55afa67a))
+
+	ROM_REGION(0x20000, "subcpu", 0)
+	ROM_LOAD16_BYTE("24-1154-01_j.bin", 0x00000, 0x08000, CRC(a2424fb1) SHA1(1b7c76402f8644cd051899e49a96755429692626))
+	ROM_LOAD16_BYTE("24-1154-03_j.bin", 0x00001, 0x08000, CRC(71821d4a) SHA1(d137df960f7ffd9c3e14258fc59e15f0997d56bc))
+	ROM_LOAD16_BYTE("24-1154-02_j.bin", 0x10000, 0x08000, CRC(0d027d41) SHA1(0a4ffc0d68f632d70def8ff009dedad971b38d31))
+	ROM_LOAD16_BYTE("24-1154-04_j.bin", 0x10001, 0x08000, CRC(e5e6fe2e) SHA1(0f130e808ed75efd7525ced5ae30193e60f33644))
+
+	ROM_REGION(0x4000, "chargen", 0)
+	ROM_LOAD("24-1140-00_a.bin", 0x0000, 0x4000, CRC(7a4d0b82) SHA1(15952655cef77918a76c0c268b749be34b28634b))
+ROM_END
+
+
+} // anonymous namespace
+
+
+//**************************************************************************
+//  SYSTEM DRIVERS
+//**************************************************************************
+
+//    YEAR  NAME        PARENT      COMPAT  MACHINE     INPUT  CLASS             INIT        COMPANY    FULLNAME  FLAGS
+COMP( 1987, digilog400, 0,          0,      digilog400, 0,     digilog400_state, empty_init, "Digilog", "400",    MACHINE_IS_SKELETON )
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index 2886452ab7a..a2ea0efd80e 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -12440,6 +12440,9 @@ ep804                           //
 @source:digilog320.cpp
 digilog320                      //
 
+@source:digilog400.cpp
+digilog400                      //
+
 @source:digijet.cpp
 digijet                         //
 
diff --git a/src/mame/mess.flt b/src/mame/mess.flt
index 307b65f9877..9811701cdca 100644
--- a/src/mame/mess.flt
+++ b/src/mame/mess.flt
@@ -242,6 +242,7 @@ diablo1300.cpp
 didact.cpp
 digel804.cpp
 digilog320.cpp
+digilog400.cpp
 digijet.cpp
 dim68k.cpp
 dm7000.cpp