diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 6551182823e..eb15bafeb2b 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -2609,6 +2609,7 @@ files {
 createMESSProjects(_target, _subtarget, "kawai")
 files {
 	MAME_DIR .. "src/mame/drivers/kawai_k1.cpp",
+	MAME_DIR .. "src/mame/drivers/kawai_k4.cpp",
 	MAME_DIR .. "src/mame/drivers/kawai_k5.cpp",
 }
 
diff --git a/src/mame/drivers/kawai_k4.cpp b/src/mame/drivers/kawai_k4.cpp
new file mode 100644
index 00000000000..c23f30d9084
--- /dev/null
+++ b/src/mame/drivers/kawai_k4.cpp
@@ -0,0 +1,80 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/***************************************************************************
+
+    Skeleton driver for Kawai K4 synthesizer.
+
+***************************************************************************/
+
+#include "emu.h"
+#include "cpu/upd78k/upd78k3.h"
+//#include "machine/nvram.h"
+
+class kawai_k4_state : public driver_device
+{
+public:
+	kawai_k4_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_mpu(*this, "mpu")
+	{
+	}
+
+	void k4(machine_config &config);
+
+private:
+	void mem_map(address_map &map);
+
+	required_device<upd78310_device> m_mpu;
+};
+
+
+void kawai_k4_state::mem_map(address_map &map)
+{
+	map(0x0000, 0x7fff).rom().region("coderom", 0);
+	map(0x8000, 0xbfff).rom().region("coderom", 0x8000); // TODO: banked with other stuff
+}
+
+
+static INPUT_PORTS_START(k4)
+INPUT_PORTS_END
+
+void kawai_k4_state::k4(machine_config &config)
+{
+	UPD78310(config, m_mpu, 12_MHz_XTAL); // µPD78310G-36
+	m_mpu->set_addrmap(AS_PROGRAM, &kawai_k4_state::mem_map);
+
+	//NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // TC51832SP-12 + battery
+}
+
+ROM_START(k4)
+	ROM_REGION(0x10000, "coderom", 0)
+	ROM_SYSTEM_BIOS(0, "v1.4", "Version 1.4")
+	ROMX_LOAD("k4_v14.u8",    0x00000, 0x10000, CRC(bf463780) SHA1(acb391fc8d074420a0dcdf0cbea523f6e7601e66), ROM_BIOS(0))
+	ROM_SYSTEM_BIOS(1, "v1.3", "Version 1.3")
+	ROMX_LOAD("p206b.u8",     0x00000, 0x10000, CRC(4108dec4) SHA1(8666583bc2f7a6792586325d8b98ffb684e51259), ROM_BIOS(1)) // 27C512
+	ROM_SYSTEM_BIOS(2, "v1.0", "Version 1.0")
+	ROMX_LOAD("p206_e5dp.u8", 0x00000, 0x10000, CRC(fdf47a8e) SHA1(2a074da55746cc51f1e06d3f88afc296750f3ea6), ROM_BIOS(2)) // 27C512
+
+	ROM_REGION(0x180000, "waverom", 0)
+	ROM_LOAD("d941_p202-m8dw.u30", 0x000000, 0x80000, NO_DUMP) // TC534000P
+	ROM_LOAD("d942_p203-m8dw.u29", 0x080000, 0x80000, NO_DUMP) // TC534000P
+	ROM_LOAD("d943_p204-m8dw.u31", 0x100000, 0x80000, NO_DUMP) // TC534000P
+ROM_END
+
+ROM_START(k4r)
+	ROM_REGION(0x10000, "coderom", 0)
+	ROM_SYSTEM_BIOS(0, "v1.4", "Version 1.4")
+	ROMX_LOAD("p207c.u7",    0x00000, 0x10000, CRC(17bdaaf6) SHA1(a1220fd479e154be679596ab18a1e76ae722a39d), ROM_BIOS(0))
+	ROM_SYSTEM_BIOS(1, "v1.3", "Version 1.3")
+	ROMX_LOAD("k4r_v1.3.u7", 0x00000, 0x10000, CRC(1b36d5ce) SHA1(afe25260e3ada1646d6c04cebb4c6dec41f742c0), ROM_BIOS(1))
+	ROM_SYSTEM_BIOS(2, "v1.2", "Version 1.2")
+	ROMX_LOAD("k4r_v1.2.u7", 0x00000, 0x10000, CRC(8b4953bc) SHA1(7bdb0d15bfe396fe6c2499c75137d71aef6c2ca8), ROM_BIOS(2))
+
+	ROM_REGION(0x180000, "waverom", 0)
+	ROM_LOAD("d941_p202-m8dw.u40", 0x000000, 0x80000, NO_DUMP) // TC534000P
+	ROM_LOAD("d942_p203-m8dw.u39", 0x080000, 0x80000, NO_DUMP) // TC534000P
+	ROM_LOAD("d943_p204-m8dw.u38", 0x100000, 0x80000, NO_DUMP) // TC534000P
+ROM_END
+
+SYST(1989, k4,  0,  0, k4, k4, kawai_k4_state, empty_init, "Kawai Musical Instrument Manufacturing", "K4 16-bit Digital Synthesizer",         MACHINE_IS_SKELETON)
+SYST(1989, k4r, k4, 0, k4, k4, kawai_k4_state, empty_init, "Kawai Musical Instrument Manufacturing", "K4r 16-bit Digital Synthesizer Module", MACHINE_IS_SKELETON)
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index dc5cb9f9f69..b3427153942 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -18469,6 +18469,10 @@ k1m                             //
 k1r                             //
 k1rii                           //
 
+@source:kawai_k4.cpp
+k4                              //
+k4r                             //
+
 @source:kawai_k5.cpp
 k5                              //
 k5m                             //
diff --git a/src/mame/mess.flt b/src/mame/mess.flt
index 472e2d886e8..7e1ea196039 100644
--- a/src/mame/mess.flt
+++ b/src/mame/mess.flt
@@ -434,6 +434,7 @@ k1003.cpp
 k28.cpp
 k8915.cpp
 kawai_k1.cpp
+kawai_k4.cpp
 kawai_k5.cpp
 kaypro.cpp
 kc.cpp