diff --git a/src/emu/xtal.cpp b/src/emu/xtal.cpp
index bc84a77bf9e..21eef19b720 100644
--- a/src/emu/xtal.cpp
+++ b/src/emu/xtal.cpp
@@ -202,6 +202,7 @@ const double XTAL::known_xtals[] = {
 	 14'318'181, /* 14.318181_MHz_XTAL     Extremely common, used on 100's of PCBs (4x NTSC subcarrier) */
 	 14'580'000, /* 14.58_MHz_XTAL         Fortune 32:16 Video Controller */
 	 14'705'882, /* 14.705882_MHz_XTAL     Aleck64 */
+	 14'728'000, /* 14.728_MHz_XTAL        ADM 36 */
 	 14'742'800, /* 14.7428_MHz_XTAL       ADM 23 */
 	 14'745'600, /* 14.7456_MHz_XTAL       Namco System 12 & System Super 22/23 for JVS */
 	 14'784'000, /* 14.784_MHz_XTAL        Zenith Z-29 */
@@ -283,6 +284,7 @@ const double XTAL::known_xtals[] = {
 	 23'961'600, /* 23.9616_MHz_XTAL       Osborne 4 (Vixen) */
 	 24'000'000, /* 24_MHz_XTAL            Mario, 80's Data East games, 80's Konami games */
 	 24'073'400, /* 24.0734_MHz_XTAL       DEC Rainbow 100 */
+	 24'300'000, /* 24.3_MHz_XTAL          ADM 36 132-column display clock */
 	 24'576'000, /* 24.576_MHz_XTAL        Pole Position h/w, Model 3 CPU board */
 	 24'883'200, /* 24.8832_MHz_XTAL       DEC VT100 */
 	 25'000'000, /* 25_MHz_XTAL            Namco System 22, Taito GNET, Dogyuun h/w */
diff --git a/src/mame/drivers/adm36.cpp b/src/mame/drivers/adm36.cpp
new file mode 100644
index 00000000000..2298543b7eb
--- /dev/null
+++ b/src/mame/drivers/adm36.cpp
@@ -0,0 +1,202 @@
+// license:BSD-3-Clause
+// copyright-holders:Robbbert,AJR
+/************************************************************************************************************
+
+    Skeleton driver for ADM 36 Video Display Terminal.
+
+    The detachable keyboard has not been dumped. It is controlled serially through the PIO.
+
+************************************************************************************************************/
+
+#include "emu.h"
+#include "bus/rs232/rs232.h"
+#include "cpu/z80/z80.h"
+#include "machine/er1400.h"
+#include "machine/z80ctc.h"
+#include "machine/z80pio.h"
+#include "machine/z80sio.h"
+#include "video/tms9927.h"
+#include "screen.h"
+
+
+class adm36_state : public driver_device
+{
+public:
+	adm36_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+		, m_earom(*this, "earom")
+		, m_vtac(*this, "vtac")
+		, m_chargen(*this, "chargen")
+		, m_vram(*this, "vram%u", 0U)
+	{
+	}
+
+	void adm36(machine_config &config);
+
+protected:
+	virtual void machine_start() override;
+	virtual void machine_reset() override;
+
+private:
+	u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
+
+	void pio_pa_w(u8 data);
+	u8 pio_pb_r();
+	void pio_pb_w(u8 data);
+	DECLARE_WRITE_LINE_MEMBER(vsyn_w);
+
+	void mem_map(address_map &map);
+	void io_map(address_map &map);
+
+	required_device<z80_device> m_maincpu;
+	required_device<er1400_device> m_earom;
+	required_device<crt5037_device> m_vtac;
+	required_region_ptr<u8> m_chargen;
+	required_shared_ptr_array<u8, 2> m_vram;
+
+	bool m_vsyn;
+};
+
+
+u32 adm36_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
+{
+	return 0;
+}
+
+void adm36_state::machine_start()
+{
+	m_vsyn = false;
+
+	save_item(NAME(m_vsyn));
+}
+
+void adm36_state::machine_reset()
+{
+}
+
+void adm36_state::pio_pa_w(u8 data)
+{
+	m_earom->data_w(BIT(data, 0));
+}
+
+u8 adm36_state::pio_pb_r()
+{
+	return (m_earom->data_r() ? 0 : 1) | (m_vsyn ? 0x20 : 0);
+}
+
+void adm36_state::pio_pb_w(u8 data)
+{
+	m_earom->clock_w(!BIT(data, 4));
+	m_earom->c3_w(BIT(data, 3));
+	m_earom->c2_w(BIT(data, 2));
+	m_earom->c1_w(BIT(data, 1));
+}
+
+WRITE_LINE_MEMBER(adm36_state::vsyn_w)
+{
+	m_vsyn = bool(state);
+}
+
+void adm36_state::mem_map(address_map &map)
+{
+	map(0x0000, 0x2fff).rom().region("maincpu", 0);
+	map(0x6000, 0x67ff).ram(); // MK4802J-3 (U76)
+	map(0xe000, 0xefff).ram().share("vram0"); // 4x MK4118AN-1 (U66-U69)
+	map(0xf000, 0xffff).ram().share("vram1"); // 4x MK4118AN-1 (U81-U84)
+}
+
+void adm36_state::io_map(address_map &map)
+{
+	map.global_mask(0xff);
+	map(0x00, 0x03).mirror(0x0c).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
+	map(0x10, 0x13).mirror(0x0c).rw("sio", FUNC(z80sio_device::cd_ba_r), FUNC(z80sio_device::cd_ba_w));
+	map(0x20, 0x23).mirror(0x0c).rw("pio", FUNC(z80pio_device::read), FUNC(z80pio_device::write));
+	map(0x40, 0x4f).rw(m_vtac, FUNC(crt5037_device::read), FUNC(crt5037_device::write));
+}
+
+
+static INPUT_PORTS_START(adm36)
+INPUT_PORTS_END
+
+
+static const z80_daisy_config daisy_chain[] =
+{
+	{ "ctc" },
+	{ "sio" },
+	{ "pio" },
+	{ nullptr }
+};
+
+void adm36_state::adm36(machine_config &config)
+{
+	// basic machine hardware
+	Z80(config, m_maincpu, 14.728_MHz_XTAL / 6);
+	m_maincpu->set_addrmap(AS_PROGRAM, &adm36_state::mem_map);
+	m_maincpu->set_addrmap(AS_IO, &adm36_state::io_map);
+	m_maincpu->set_daisy_config(daisy_chain);
+
+	z80pio_device &pio(Z80PIO(config, "pio", 14.728_MHz_XTAL / 6));
+	pio.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
+	pio.out_pa_callback().set(FUNC(adm36_state::pio_pa_w));
+	pio.in_pb_callback().set(FUNC(adm36_state::pio_pb_r));
+	pio.out_pb_callback().set(FUNC(adm36_state::pio_pb_w));
+
+	ER1400(config, m_earom);
+
+	//F3870(config, "keybcpu", 3.579545_MHz_XTAL);
+
+	z80ctc_device &ctc(Z80CTC(config, "ctc", 14.728_MHz_XTAL / 6));
+	ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
+	ctc.set_clk<0>(14.728_MHz_XTAL / 12);
+	ctc.set_clk<1>(14.728_MHz_XTAL / 12);
+	ctc.set_clk<2>(14.728_MHz_XTAL / 12);
+	ctc.set_clk<3>(14.728_MHz_XTAL / 12);
+	ctc.zc_callback<0>().set("sio", FUNC(z80sio_device::txca_w));
+	ctc.zc_callback<1>().set("sio", FUNC(z80sio_device::rxca_w));
+	ctc.zc_callback<2>().set("sio", FUNC(z80sio_device::txcb_w));
+	ctc.zc_callback<2>().append("sio", FUNC(z80sio_device::rxcb_w));
+
+	z80sio_device &sio(Z80SIO(config, "sio", 14.728_MHz_XTAL / 6)); // MK3887N
+	sio.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
+	sio.out_txda_callback().set("modem", FUNC(rs232_port_device::write_txd));
+	sio.out_rtsa_callback().set("modem", FUNC(rs232_port_device::write_rts));
+	sio.out_dtra_callback().set("modem", FUNC(rs232_port_device::write_dtr));
+	sio.out_txdb_callback().set("printer", FUNC(rs232_port_device::write_txd));
+	sio.out_dtrb_callback().set("printer", FUNC(rs232_port_device::write_rts));
+
+	screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
+	screen.set_raw(14.728_MHz_XTAL, 936, 0, 720, 262, 0, 240);
+	//screen.set_raw(24.3_MHz_XTAL, 1548, 0, 1188, 262, 0, 240);
+	screen.set_screen_update(FUNC(adm36_state::screen_update));
+
+	CRT5037(config, m_vtac, 14.728_MHz_XTAL / 9);
+	m_vtac->set_char_width(9);
+	m_vtac->set_screen("screen");
+	m_vtac->vsyn_callback().set(FUNC(adm36_state::vsyn_w));
+
+	rs232_port_device &modem(RS232_PORT(config, "modem", default_rs232_devices, nullptr)); // RS-232C, RS-422A or 20mA current loop
+	modem.rxd_handler().set("sio", FUNC(z80sio_device::rxa_w));
+	modem.cts_handler().set("sio", FUNC(z80sio_device::ctsa_w));
+	modem.dcd_handler().set("sio", FUNC(z80sio_device::dcda_w));
+	modem.dsr_handler().set("pio", FUNC(z80pio_device::pb6_w));
+
+	rs232_port_device &printer(RS232_PORT(config, "printer", default_rs232_devices, nullptr));
+	printer.rxd_handler().set("sio", FUNC(z80sio_device::rxb_w));
+	printer.cts_handler().set("sio", FUNC(z80sio_device::ctsa_w));
+	printer.dcd_handler().set("sio", FUNC(z80sio_device::dcda_w));
+}
+
+
+ROM_START(adm36)
+	ROM_REGION(0x3000, "maincpu", 0)
+	ROM_LOAD("u71_136261-012.bin", 0x0000, 0x2000, CRC(f08315c7) SHA1(3943a5fc587e690df81aa9694e6e452673ec5513))
+	ROM_LOAD("u72_131671-015.bin", 0x2000, 0x1000, CRC(c397f4e2) SHA1(21513472fe4237bda8448a2ad85496757d4ece12))
+	// U73-U75 are empty sockets
+
+	ROM_REGION(0x1000, "chargen", 0)
+	ROM_LOAD("u56.bin", 0x0000, 0x1000, CRC(70e46897) SHA1(85b4360912fc05243b3b2df29bde5a3def94086b))
+ROM_END
+
+
+COMP(1981, adm36, 0, 0, adm36, adm36, adm36_state, empty_init, "Lear Siegler", "ADM 36 Video Display Terminal", MACHINE_IS_SKELETON)
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index 8551662b694..22dde44843a 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -916,6 +916,9 @@ adm23                           //
 @source:adm31.cpp
 adm31                           //
 
+@source:adm36.cpp
+adm36                           //
+
 @source:adp.cpp
 fashiong                        // (c) 1997
 fashiong2                       // (c) 1997
diff --git a/src/mame/mess.flt b/src/mame/mess.flt
index 5cf6131d60d..6707beb357e 100644
--- a/src/mame/mess.flt
+++ b/src/mame/mess.flt
@@ -24,6 +24,7 @@ acvirus.cpp
 adam.cpp
 adm23.cpp
 adm31.cpp
+adm36.cpp
 advision.cpp
 agat.cpp
 aim65.cpp