diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 4d8717bbe37..4a262ed9d32 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -3338,6 +3338,7 @@ files {
 	MAME_DIR .. "src/mame/drivers/roland_sc55.cpp",
 	MAME_DIR .. "src/mame/drivers/roland_sc88.cpp",
 	MAME_DIR .. "src/mame/drivers/roland_tb303.cpp",
+	MAME_DIR .. "src/mame/drivers/roland_tr505.cpp",
 	MAME_DIR .. "src/mame/drivers/roland_tr606.cpp",
 	MAME_DIR .. "src/mame/drivers/roland_tr707.cpp",
 	MAME_DIR .. "src/mame/drivers/roland_tr909.cpp",
diff --git a/src/mame/drivers/roland_tr505.cpp b/src/mame/drivers/roland_tr505.cpp
new file mode 100644
index 00000000000..4f95c90068e
--- /dev/null
+++ b/src/mame/drivers/roland_tr505.cpp
@@ -0,0 +1,72 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/**********************************************************************
+
+    Skeleton driver for Roland TR-505 drum machine.
+
+    At present only the sound ROM is dumped. The firmware is entirely
+    an internal mask program.
+
+**********************************************************************/
+
+#include "emu.h"
+#include "audio/mb63h114.h"
+//#include "bus/midi/midi.h"
+#include "cpu/m6800/m6801.h"
+//#include "machine/nvram.h"
+//#include "video/upd7227.h"
+
+class roland_tr505_state : public driver_device
+{
+public:
+	roland_tr505_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+		, m_mac(*this, "mac")
+	{
+	}
+
+	void tr505(machine_config &config);
+
+private:
+	void mem_map(address_map &map);
+
+	required_device<hd6301y0_cpu_device> m_maincpu;
+	required_device<mb63h114_device> m_mac;
+};
+
+
+void roland_tr505_state::mem_map(address_map &map)
+{
+	map(0x0000, 0x0027).m(m_maincpu, FUNC(hd6301y0_cpu_device::hd6301y_io));
+	map(0x0040, 0x013f).ram(); // internal RAM
+	map(0xc000, 0xffff).rom().region("maincpu", 0); // internal ROM
+}
+
+
+static INPUT_PORTS_START(tr505)
+INPUT_PORTS_END
+
+void roland_tr505_state::tr505(machine_config &config)
+{
+	HD6301Y0(config, m_maincpu, 4_MHz_XTAL); // HD6301Y0A in single chip mode (MP0 = MP1 = +5V)
+	m_maincpu->set_addrmap(AS_PROGRAM, &roland_tr505_state::mem_map);
+	m_maincpu->set_disable();
+
+	//NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // TC5517APL + battery
+
+	//UPD7225(config, "lcdd");
+
+	MB63H114(config, m_mac, 1.6_MHz_XTAL);
+}
+
+ROM_START(tr505)
+	ROM_REGION(0x4000, "maincpu", 0)
+	ROM_LOAD("hd6301y0a99p.ic3", 0x0000, 0x4000, NO_DUMP) // Version 1.1 (690700 & up)
+	//ROM_LOAD("hd6301y0a51p.ic3", 0x0000, 0x4000, NO_DUMP) // Version 1.0 (630100–690699)
+
+	ROM_REGION(0x20000, "mac", 0)
+	ROM_LOAD("tr-505_rawromdump.bin", 0x00000, 0x20000, CRC(2234c834) SHA1(6441d3e7b53aff4511b23021dc854b7a5cc57689)) // TC531000P
+ROM_END
+
+SYST(1986, tr505, 0, 0, tr505, tr505, roland_tr505_state, empty_init, "Roland", "TR-505 Rhythm Composer", MACHINE_IS_SKELETON)
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index 94e21cd8a07..a123526281f 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -35387,6 +35387,9 @@ sc88vl                          //
 @source:roland_tb303.cpp
 tb303                           // Roland
 
+@source:roland_tr505.cpp
+tr505                           //
+
 @source:roland_tr606.cpp
 tr606                           // Roland
 
diff --git a/src/mame/mess.flt b/src/mame/mess.flt
index c8adf795ce3..4a7b3035e56 100644
--- a/src/mame/mess.flt
+++ b/src/mame/mess.flt
@@ -810,6 +810,7 @@ roland_s50.cpp
 roland_sc55.cpp
 roland_sc88.cpp
 roland_tb303.cpp
+roland_tr505.cpp
 roland_tr606.cpp
 roland_tr707.cpp
 roland_tr909.cpp