diff --git a/.gitattributes b/.gitattributes
index e9a72308e29..939a9ae50da 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -8850,6 +8850,8 @@ src/mess/machine/dec_lk201.c svneol=native#text/plain
 src/mess/machine/dec_lk201.h svneol=native#text/plain
 src/mess/machine/dgn_beta.c svneol=native#text/plain
 src/mess/machine/dgnalpha.c svneol=native#text/plain
+src/mess/machine/dmv_keyb.c svneol=native#text/plain
+src/mess/machine/dmv_keyb.h svneol=native#text/plain
 src/mess/machine/docg3.c svneol=native#text/plain
 src/mess/machine/docg3.h svneol=native#text/plain
 src/mess/machine/dragon.c svneol=native#text/plain
diff --git a/src/mess/drivers/dmv.c b/src/mess/drivers/dmv.c
index cf911cfe110..4f23b090ea5 100644
--- a/src/mess/drivers/dmv.c
+++ b/src/mess/drivers/dmv.c
@@ -14,6 +14,9 @@
 #include "cpu/mcs48/mcs48.h"
 #include "machine/upd765.h"
 #include "machine/am9517a.h"
+#include "machine/pit8253.h"
+#include "machine/dmv_keyb.h"
+#include "sound/speaker.h"
 #include "video/upd7220.h"
 #include "dmv.lh"
 
@@ -25,9 +28,12 @@ public:
 			m_maincpu(*this, "maincpu"),
 			m_hgdc(*this, "upd7220"),
 			m_dmac(*this, "dma8237"),
-			m_fdc(*this, "upd765"),
-			m_floppy0(*this, "upd765:0:525dd"),
-			m_floppy1(*this, "upd765:1:525dd"),
+			m_pit(*this, "pit8253"),
+			m_fdc(*this, "i8272"),
+			m_floppy0(*this, "i8272:0"),
+			m_floppy1(*this, "i8272:1"),
+			m_keyboard(*this, "keyboard"),
+			m_speaker(*this, "speaker"),
 			m_video_ram(*this, "video_ram"),
 			m_palette(*this, "palette")
 		{ }
@@ -35,9 +41,12 @@ public:
 	required_device<cpu_device> m_maincpu;
 	required_device<upd7220_device> m_hgdc;
 	required_device<am9517a_device> m_dmac;
-	required_device<upd765a_device> m_fdc;
-	required_device<floppy_image_device> m_floppy0;
-	required_device<floppy_image_device> m_floppy1;
+	required_device<pit8253_device> m_pit;
+	required_device<i8272a_device> m_fdc;
+	required_device<floppy_connector> m_floppy0;
+	required_device<floppy_connector> m_floppy1;
+	required_device<dmv_keyboard_device> m_keyboard;
+	required_device<speaker_sound_device> m_speaker;
 
 	virtual void video_start();
 	virtual void machine_start();
@@ -45,22 +54,38 @@ public:
 
 	DECLARE_WRITE8_MEMBER(leds_w);
 	DECLARE_WRITE_LINE_MEMBER(dma_hrq_changed);
+	DECLARE_WRITE_LINE_MEMBER(dmac_eop);
+	DECLARE_WRITE_LINE_MEMBER(dmac_dack3);
+	DECLARE_WRITE_LINE_MEMBER(fdc_irq);
+	DECLARE_WRITE_LINE_MEMBER(pit_out0);
 	DECLARE_WRITE8_MEMBER(fdd_motor_w);
 	DECLARE_READ8_MEMBER(sys_status_r);
-	DECLARE_READ8_MEMBER(kb_ctrl_mcu_r);
-	DECLARE_WRITE8_MEMBER(kb_ctrl_mcu_w);
-	DECLARE_READ8_MEMBER(fdc_dma_r);
-	DECLARE_WRITE8_MEMBER(fdc_dma_w);
+	DECLARE_WRITE8_MEMBER(tc_set_w);
 	DECLARE_READ8_MEMBER(memory_read_byte);
 	DECLARE_WRITE8_MEMBER(memory_write_byte);
+	DECLARE_WRITE8_MEMBER(ramsel_w);
+	DECLARE_WRITE8_MEMBER(romsel_w);
+	DECLARE_READ8_MEMBER(kb_mcu_port1_r);
+	DECLARE_WRITE8_MEMBER(kb_mcu_port1_w);
+	DECLARE_WRITE8_MEMBER(kb_mcu_port2_w);
 
 	required_shared_ptr<UINT8> m_video_ram;
 	required_device<palette_device> m_palette;
 
 	UPD7220_DISPLAY_PIXELS_MEMBER( hgdc_display_pixels );
 	UPD7220_DRAW_TEXT_LINE_MEMBER( hgdc_draw_text );
+
+	int         m_eop_line;
+	int         m_dack3_line;
+	int         m_sd_poll_state;
+	int         m_floppy_motor;
+	UINT8       m_ram[0x2000];
 };
 
+WRITE8_MEMBER(dmv_state::tc_set_w)
+{
+	m_fdc->tc_w(true);
+}
 
 WRITE8_MEMBER(dmv_state::leds_w)
 {
@@ -82,22 +107,24 @@ WRITE8_MEMBER(dmv_state::leds_w)
 		output_set_led_value(8-i, BIT(data, i));
 }
 
-READ8_MEMBER(dmv_state::fdc_dma_r)
+WRITE8_MEMBER(dmv_state::ramsel_w)
 {
-	return m_fdc->dma_r();
+	m_maincpu->space(AS_PROGRAM).install_ram(0x0000, 0x1fff, m_ram);
 }
 
-WRITE8_MEMBER(dmv_state::fdc_dma_w)
+WRITE8_MEMBER(dmv_state::romsel_w)
 {
-	m_fdc->dma_w(data);
+	m_maincpu->space(AS_PROGRAM).install_rom(0x0000, 0x1fff, memregion("maincpu")->base());
 }
 
 WRITE8_MEMBER(dmv_state::fdd_motor_w)
 {
-	// bit 0 defines the state of the FDD motor
+	m_pit->write_gate0(1);
+	m_pit->write_gate0(0);
 
-	m_floppy0->mon_w(!BIT(data, 0));
-	m_floppy1->mon_w(!BIT(data, 0));
+	m_floppy_motor = 0;
+	m_floppy0->get_device()->mon_w(m_floppy_motor);
+	m_floppy1->get_device()->mon_w(m_floppy_motor);
 }
 
 READ8_MEMBER(dmv_state::sys_status_r)
@@ -115,25 +142,21 @@ READ8_MEMBER(dmv_state::sys_status_r)
 	*/
 	UINT8 data = 0x00;
 
+	if (m_floppy_motor)
+		data |= 0x01;
+
 	// 16-bit CPU not available
 	data |= 0x02;
 
+	if (!m_floppy0->get_device()->ready_r())
+		data |= 0x04;
+
 	if (m_fdc->get_irq())
 		data |= 0x08;
 
 	return data;
 }
 
-READ8_MEMBER(dmv_state::kb_ctrl_mcu_r)
-{
-	return machine().device<upi41_cpu_device>("kb_ctrl_mcu")->upi41_master_r(space, offset);
-}
-
-WRITE8_MEMBER(dmv_state::kb_ctrl_mcu_w)
-{
-	machine().device<upi41_cpu_device>("kb_ctrl_mcu")->upi41_master_w(space, offset, data);
-}
-
 UPD7220_DISPLAY_PIXELS_MEMBER( dmv_state::hgdc_display_pixels )
 {
 	//TODO
@@ -188,28 +211,39 @@ static ADDRESS_MAP_START( dmv_io , AS_IO, 8, dmv_state)
 	ADDRESS_MAP_UNMAP_HIGH
 	ADDRESS_MAP_GLOBAL_MASK(0xff)
 	AM_RANGE(0x00, 0x00) AM_WRITE(leds_w)
+	AM_RANGE(0x10, 0x10) AM_WRITE(ramsel_w)
+	AM_RANGE(0x11, 0x11) AM_WRITE(romsel_w)
+	AM_RANGE(0x12, 0x12) AM_WRITE(tc_set_w)
 	AM_RANGE(0x13, 0x13) AM_READ(sys_status_r)
 	AM_RANGE(0x14, 0x14) AM_WRITE(fdd_motor_w)
 	AM_RANGE(0x20, 0x2f) AM_DEVREADWRITE("dma8237", am9517a_device, read, write)
-	AM_RANGE(0x40, 0x41) AM_READWRITE(kb_ctrl_mcu_r, kb_ctrl_mcu_w)
-	AM_RANGE(0x50, 0x51) AM_DEVICE("upd765", upd765a_device, map)
+	AM_RANGE(0x40, 0x41) AM_DEVREADWRITE("kb_ctrl_mcu", upi41_cpu_device, upi41_master_r, upi41_master_w)
+	AM_RANGE(0x50, 0x51) AM_DEVICE("i8272", i8272a_device, map)
+	AM_RANGE(0x80, 0x83) AM_DEVREADWRITE("pit8253", pit8253_device, read, write)
 	AM_RANGE(0xa0, 0xa1) AM_DEVREADWRITE("upd7220", upd7220_device, read, write)
 
-	//AM_RANGE(0x10, 0x11) boot ROM bankswitch (0x0000-0x1fff)
-	//AM_RANGE(0x12, 0x12) pulse FDC TC line
-	//AM_RANGE(0x80, 0x83) PIT8253
 	//AM_RANGE(0xe0, 0xe7) RAM bankswitch
 ADDRESS_MAP_END
 
-static ADDRESS_MAP_START( dmv_keyboard_io, AS_IO, 8, dmv_state )
-	//AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1) keyboard rows input
-	//AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2) bits 0-3 kb cols out
-ADDRESS_MAP_END
+READ8_MEMBER(dmv_state::kb_mcu_port1_r)
+{
+	return !(m_keyboard->sd_poll_r() & !m_sd_poll_state);
+}
+
+WRITE8_MEMBER(dmv_state::kb_mcu_port1_w)
+{
+	m_sd_poll_state = BIT(data, 1);
+	m_keyboard->sd_poll_w(!m_sd_poll_state);
+}
+
+WRITE8_MEMBER(dmv_state::kb_mcu_port2_w)
+{
+	m_speaker->level_w(BIT(data, 0));
+}
 
 static ADDRESS_MAP_START( dmv_kb_ctrl_io, AS_IO, 8, dmv_state )
-	ADDRESS_MAP_UNMAP_HIGH
-	AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1) AM_NOP   // bit 0 data from kb, bit 1 data to kb
-	AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2) AM_NOP
+	AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1) AM_READWRITE(kb_mcu_port1_r, kb_mcu_port1_w) // bit 0 data from kb, bit 1 data to kb
+	AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2) AM_WRITE(kb_mcu_port2_w)
 ADDRESS_MAP_END
 
 static ADDRESS_MAP_START( upd7220_map, AS_0, 8, dmv_state )
@@ -227,6 +261,11 @@ void dmv_state::machine_start()
 
 void dmv_state::machine_reset()
 {
+	m_eop_line = 0;
+	m_dack3_line = 0;
+	m_sd_poll_state = 0;
+	m_floppy_motor = 1;
+	m_maincpu->space(AS_PROGRAM).install_rom(0x0000, 0x1fff, memregion("maincpu")->base());
 }
 
 void dmv_state::video_start()
@@ -264,6 +303,38 @@ WRITE_LINE_MEMBER( dmv_state::dma_hrq_changed )
 	m_dmac->hack_w(state);
 }
 
+WRITE_LINE_MEMBER( dmv_state::dmac_eop )
+{
+	if (!(m_dack3_line || m_eop_line) && (m_dack3_line || state))
+		m_fdc->tc_w(true);
+
+	m_eop_line = state;
+}
+
+WRITE_LINE_MEMBER( dmv_state::dmac_dack3 )
+{
+	if (!(m_dack3_line || m_eop_line) && (state || m_eop_line))
+		m_fdc->tc_w(true);
+
+	m_dack3_line = state;
+}
+
+WRITE_LINE_MEMBER( dmv_state::pit_out0 )
+{
+	if (!state)
+	{
+		m_floppy_motor = 1;
+		m_floppy0->get_device()->mon_w(m_floppy_motor);
+		m_floppy1->get_device()->mon_w(m_floppy_motor);
+	}
+}
+
+WRITE_LINE_MEMBER( dmv_state::fdc_irq )
+{
+	if (state)
+		m_fdc->tc_w(false);
+}
+
 READ8_MEMBER(dmv_state::memory_read_byte)
 {
 	address_space& prog_space = m_maincpu->space(AS_PROGRAM);
@@ -273,22 +344,22 @@ READ8_MEMBER(dmv_state::memory_read_byte)
 WRITE8_MEMBER(dmv_state::memory_write_byte)
 {
 	address_space& prog_space = m_maincpu->space(AS_PROGRAM);
-	return prog_space.write_byte(offset, data);
+	prog_space.write_byte(offset, data);
 }
 
 
 static MACHINE_CONFIG_START( dmv, dmv_state )
 	/* basic machine hardware */
-	MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
+	MCFG_CPU_ADD("maincpu",Z80, XTAL_24MHz / 6)
 	MCFG_CPU_PROGRAM_MAP(dmv_mem)
 	MCFG_CPU_IO_MAP(dmv_io)
 
 	MCFG_CPU_ADD("kb_ctrl_mcu", I8741, XTAL_6MHz)
 	MCFG_CPU_IO_MAP(dmv_kb_ctrl_io)
 
-	MCFG_CPU_ADD("keyboard_mcu", I8741, XTAL_6MHz)
-	MCFG_CPU_IO_MAP(dmv_keyboard_io)
-	MCFG_DEVICE_DISABLE()
+	MCFG_QUANTUM_PERFECT_CPU("maincpu")
+
+	MCFG_DMV_KEYBOARD_ADD("keyboard")
 
 	/* video hardware */
 	MCFG_SCREEN_ADD("screen", RASTER)
@@ -310,14 +381,29 @@ static MACHINE_CONFIG_START( dmv, dmv_state )
 
 	MCFG_DEVICE_ADD( "dma8237", AM9517A, XTAL_4MHz )
 	MCFG_I8237_OUT_HREQ_CB(WRITELINE(dmv_state, dma_hrq_changed))
+	MCFG_I8237_OUT_EOP_CB(WRITELINE(dmv_state, dmac_eop))
 	MCFG_I8237_IN_MEMR_CB(READ8(dmv_state, memory_read_byte))
 	MCFG_I8237_OUT_MEMW_CB(WRITE8(dmv_state, memory_write_byte))
-	MCFG_I8237_IN_IOR_3_CB(READ8(dmv_state, fdc_dma_r))
-	MCFG_I8237_OUT_IOW_3_CB(WRITE8(dmv_state, fdc_dma_w))
-	MCFG_UPD765A_ADD( "upd765", true, true )
+	MCFG_I8237_IN_IOR_3_CB(DEVREAD8("i8272", i8272a_device, mdma_r))
+	MCFG_I8237_OUT_IOW_3_CB(DEVWRITE8("i8272", i8272a_device, mdma_w))
+	MCFG_I8237_OUT_DACK_3_CB(WRITELINE(dmv_state, dmac_dack3))
+
+	MCFG_I8272A_ADD( "i8272", true )
+	MCFG_UPD765_INTRQ_CALLBACK(WRITELINE(dmv_state, fdc_irq))
 	MCFG_UPD765_DRQ_CALLBACK(DEVWRITELINE("dma8237", am9517a_device, dreq3_w))
-	MCFG_FLOPPY_DRIVE_ADD("upd765:0", dmv_floppies, "525dd", floppy_image_device::default_floppy_formats)
-	MCFG_FLOPPY_DRIVE_ADD("upd765:1", dmv_floppies, "525dd", floppy_image_device::default_floppy_formats)
+	MCFG_FLOPPY_DRIVE_ADD("i8272:0", dmv_floppies, "525dd", floppy_image_device::default_floppy_formats)
+	MCFG_FLOPPY_DRIVE_ADD("i8272:1", dmv_floppies, "525dd", floppy_image_device::default_floppy_formats)
+
+	MCFG_DEVICE_ADD("pit8253", PIT8253, 0)
+	MCFG_PIT8253_CLK0(50)
+	MCFG_PIT8253_OUT0_HANDLER(WRITELINE(dmv_state, pit_out0))
+	//MCFG_PIT8253_CLK2(XTAL_24MHz / 3 / 16)
+	//MCFG_PIT8253_OUT2_HANDLER(WRITELINE(dmv_state, timint_w))
+
+	/* sound hardware */
+	MCFG_SPEAKER_STANDARD_MONO( "mono" )
+	MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0)
+	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
 MACHINE_CONFIG_END
 
 /* ROM definition */
@@ -325,12 +411,8 @@ ROM_START( dmv )
 	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
 	ROM_LOAD( "dmv_norm.bin", 0x0000, 0x2000, CRC(bf25f3f0) SHA1(0c7dd37704db4799e340cc836f887cd543e5c964))
 
-	ROM_REGION(0x400, "kb_ctrl_mcu", ROMREGION_ERASEFF)
+	ROM_REGION(0x400, "kb_ctrl_mcu", 0)
 	ROM_LOAD( "dmv_kb_ctrl_mcu.bin", 0x0000, 0x0400, CRC(a03af298) SHA1(144cba41294c46f5ca79b7ad8ced0e4408168775))
-
-		// i8741/8041 microcontroller inside the Keyboard
-	ROM_REGION(0x400, "keyboard_mcu", ROMREGION_ERASEFF)
-	ROM_LOAD( "dmv_kbmcu.bin", 0x0000, 0x0400, CRC(14e376de) SHA1 (ed09048ef03c602dba17ad6fcfe125c082c9bb17))
 ROM_END
 
 /* Driver */
diff --git a/src/mess/machine/dmv_keyb.c b/src/mess/machine/dmv_keyb.c
new file mode 100644
index 00000000000..c11e6c5c357
--- /dev/null
+++ b/src/mess/machine/dmv_keyb.c
@@ -0,0 +1,313 @@
+// license:BSD-3-Clause
+// copyright-holders:Sandro Ronco
+/**********************************************************************
+
+    Decision Mate V keyboard emulation
+
+*********************************************************************/
+
+#include "dmv_keyb.h"
+
+
+//**************************************************************************
+//  DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type DMV_KEYBOARD = &device_creator<dmv_keyboard_device>;
+
+
+//***************************************************************************
+//    IMPLEMENTATION
+//***************************************************************************
+
+ROM_START( dmv_keyboard )
+	ROM_REGION( 0x400, "mcu", 0 )
+	ROM_LOAD( "dmv_kbmcu.bin", 0x0000, 0x0400, CRC(14e376de) SHA1 (ed09048ef03c602dba17ad6fcfe125c082c9bb17))
+ROM_END
+
+
+static ADDRESS_MAP_START( dmv_keyboard_io, AS_IO, 8, dmv_keyboard_device )
+	AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1) AM_READ(port1_r)
+	AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2) AM_READWRITE(port2_r, port2_w)
+ADDRESS_MAP_END
+
+
+static MACHINE_CONFIG_FRAGMENT( dmv_keyboard )
+	MCFG_CPU_ADD("mcu", I8741, XTAL_6MHz)
+	MCFG_CPU_IO_MAP(dmv_keyboard_io)
+MACHINE_CONFIG_END
+
+
+INPUT_PORTS_START( dmv_keyboard )
+	PORT_START("COL.0")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RCONTROL)  PORT_CHAR(UCHAR_MAMEKEY(RCONTROL))
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F)         PORT_CHAR('f') PORT_CHAR('F')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V)         PORT_CHAR('v') PORT_CHAR('V')
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7_PAD)     PORT_CHAR(UCHAR_MAMEKEY(7_PAD))
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9_PAD)     PORT_CHAR(UCHAR_MAMEKEY(9_PAD))
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R)         PORT_CHAR('R') PORT_CHAR('r')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4)         PORT_CHAR('4') PORT_CHAR('$')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F5)        PORT_CHAR(UCHAR_MAMEKEY(F5))
+
+	PORT_START("COL.1")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0_PAD)     PORT_CHAR(UCHAR_MAMEKEY(0_PAD))
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CAPSLOCK)  PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK))
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR(UCHAR_MAMEKEY(BACKSLASH))
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_PGUP)      PORT_NAME("00")
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DEL_PAD)   PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD))
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LCONTROL)  PORT_CHAR(UCHAR_MAMEKEY(LCONTROL))
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ESC)       PORT_CHAR(UCHAR_MAMEKEY(ESC))
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F1)        PORT_CHAR(UCHAR_MAMEKEY(F1))
+
+	PORT_START("COL.2")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DEL)   PORT_CHAR(UCHAR_MAMEKEY(DEL))   PORT_NAME("CLR")
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D)     PORT_CHAR('d') PORT_CHAR('D')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C)     PORT_CHAR('c') PORT_CHAR('C')
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD))
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH_PAD) PORT_CHAR(UCHAR_MAMEKEY(SLASH_PAD))
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E)     PORT_CHAR('e') PORT_CHAR('E')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3)     PORT_CHAR('3') PORT_CHAR('#')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F4)    PORT_CHAR(UCHAR_MAMEKEY(F4))
+
+	PORT_START("COL.3")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G)     PORT_CHAR('g') PORT_CHAR('G')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B)     PORT_CHAR('b') PORT_CHAR('B')
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD))
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD))
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T)     PORT_CHAR('t') PORT_CHAR('T')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5)     PORT_CHAR('5') PORT_CHAR('%')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F6)    PORT_CHAR(UCHAR_MAMEKEY(F6))
+
+	PORT_START("COL.4")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LSHIFT)    PORT_CHAR(UCHAR_SHIFT_1)
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S)     PORT_CHAR('s') PORT_CHAR('S')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X)     PORT_CHAR('x') PORT_CHAR('X')
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD))
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(13)
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W)     PORT_CHAR('w') PORT_CHAR('W')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2)     PORT_CHAR('2') PORT_CHAR('@')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F3)    PORT_CHAR(UCHAR_MAMEKEY(F3))
+
+	PORT_START("COL.5")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_PLUS_PAD)  PORT_CHAR('+')
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A)     PORT_CHAR('a') PORT_CHAR('A')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z)     PORT_CHAR('z') PORT_CHAR('Z')
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD))
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD))
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q)     PORT_CHAR('q') PORT_CHAR('Q')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1)     PORT_CHAR('1') PORT_CHAR('!')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F2)    PORT_CHAR(UCHAR_MAMEKEY(F2))
+
+	PORT_START("COL.6")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(UCHAR_MAMEKEY(BACKSPACE)) PORT_NAME("Backspace")
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L)     PORT_CHAR('l') PORT_CHAR('L')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP)  PORT_CHAR('.') PORT_CHAR('>')
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O)     PORT_CHAR('0') PORT_CHAR(')')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9)     PORT_CHAR('9') PORT_CHAR('(')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F10)   PORT_CHAR(UCHAR_MAMEKEY(F10))
+
+	PORT_START("COL.7")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F14")
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH2)    PORT_CHAR('`') PORT_CHAR('~')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ENTER)         PORT_CHAR(UCHAR_MAMEKEY(ENTER))
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE)    PORT_CHAR(']') PORT_CHAR('}')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS)        PORT_CHAR('=') PORT_CHAR('+')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F13")
+
+	PORT_START("COL.8")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(MINUS_PAD))
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H)     PORT_CHAR('h') PORT_CHAR('H')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N)     PORT_CHAR('n') PORT_CHAR('N')
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD))
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ASTERISK)  PORT_CHAR('*')
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y)     PORT_CHAR('y') PORT_CHAR('Y')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6)     PORT_CHAR('6') PORT_CHAR('^')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F7)    PORT_CHAR(UCHAR_MAMEKEY(F7))
+
+	PORT_START("COL.9")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F16")
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F18")
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DOWN)  PORT_CHAR(UCHAR_MAMEKEY(DOWN))
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P)     PORT_CHAR('p') PORT_CHAR('P')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0)     PORT_CHAR('0') PORT_CHAR(')')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F11)   PORT_CHAR(UCHAR_MAMEKEY(F11))
+
+	PORT_START("COL.10")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TAB)   PORT_CHAR('\t')
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J)     PORT_CHAR('j') PORT_CHAR('J')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M)     PORT_CHAR('m') PORT_CHAR('M')
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F19")
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_UP)    PORT_CHAR(UCHAR_MAMEKEY(UP))
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U)     PORT_CHAR('u') PORT_CHAR('U')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7)     PORT_CHAR('7') PORT_CHAR('&')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F8)    PORT_CHAR(UCHAR_MAMEKEY(F8))
+
+	PORT_START("COL.11")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F15")
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RSHIFT)    PORT_CHAR(UCHAR_MAMEKEY(RSHIFT))
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F17")
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LEFT)  PORT_CHAR(UCHAR_MAMEKEY(LEFT))
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS)     PORT_CHAR('-') PORT_CHAR('_')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F12)       PORT_CHAR(UCHAR_MAMEKEY(F12))
+
+	PORT_START("COL.12")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_HOME)  PORT_CHAR(UCHAR_MAMEKEY(HOME))
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K)     PORT_CHAR('e') PORT_CHAR('E')
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F20")
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I)     PORT_CHAR('i') PORT_CHAR('I')
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8)     PORT_CHAR('8') PORT_CHAR('*')
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F9)    PORT_CHAR(UCHAR_MAMEKEY(F9))
+
+	PORT_START("COL.13")
+	PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+	PORT_START("COL.14")
+	PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+	PORT_START("COL.15")
+	PORT_DIPNAME( 0x07, 0x00, "Lanuguage Code" )
+	PORT_DIPSETTING(    0x00, "US English" )
+	PORT_DIPSETTING(    0x01, "UK/Int. English" )
+	PORT_DIPSETTING(    0x02, "Danish" )
+	PORT_DIPSETTING(    0x03, "German" )
+	PORT_DIPSETTING(    0x04, "Swedish/Finnish" )
+	PORT_DIPSETTING(    0x05, "Norwegian" )
+	PORT_DIPSETTING(    0x06, "Spanish" )
+	PORT_DIPSETTING(    0x07, "Italian" )
+	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )
+INPUT_PORTS_END
+
+
+//-------------------------------------------------
+//  input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor dmv_keyboard_device::device_input_ports() const
+{
+	return INPUT_PORTS_NAME( dmv_keyboard );
+}
+
+
+//**************************************************************************
+//  LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+//  dmv_keyboard_device - constructor
+//-------------------------------------------------
+
+dmv_keyboard_device::dmv_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+	: device_t(mconfig, DMV_KEYBOARD, "Decision Mate V Keyboard", tag, owner, clock, "dmv_keyboard", __FILE__),
+		m_maincpu(*this, "mcu"),
+		m_keyboard(*this, "COL")
+{
+}
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void dmv_keyboard_device::device_start()
+{
+}
+
+
+//-------------------------------------------------
+//  device_reset - device-specific reset
+//-------------------------------------------------
+
+void dmv_keyboard_device::device_reset()
+{
+	m_col = 0;
+	m_sd_data_state = 1;
+	m_sd_poll_state = 1;
+}
+
+//-------------------------------------------------
+//  machine_config_additions - device-specific
+//  machine configurations
+//-------------------------------------------------
+
+machine_config_constructor dmv_keyboard_device::device_mconfig_additions() const
+{
+	return MACHINE_CONFIG_NAME( dmv_keyboard );
+}
+
+
+//-------------------------------------------------
+//  rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *dmv_keyboard_device::device_rom_region() const
+{
+	return ROM_NAME( dmv_keyboard );
+}
+
+
+//-------------------------------------------------
+//  port1_r -
+//-------------------------------------------------
+
+READ8_MEMBER( dmv_keyboard_device::port1_r )
+{
+	return m_keyboard[m_col]->read();
+}
+
+//-------------------------------------------------
+//  port2_r
+//-------------------------------------------------
+
+READ8_MEMBER( dmv_keyboard_device::port2_r )
+{
+	return ((m_sd_data_state | m_sd_poll_state) << 7) | m_col;
+}
+
+//-------------------------------------------------
+//  port2_w
+//-------------------------------------------------
+
+WRITE8_MEMBER( dmv_keyboard_device::port2_w )
+{
+	/*
+	   P2.0    col 0
+	   P2.1    col 1
+	   P2.2    col 2
+	   P2.3    col 3
+	   P2.7    SDATA
+	*/
+
+	m_col = data & 0x0f;
+	m_sd_data_state = BIT(data, 7);
+}
+
+//-------------------------------------------------
+//  sd_poll_w
+//-------------------------------------------------
+
+DECLARE_WRITE_LINE_MEMBER(dmv_keyboard_device::sd_poll_w)
+{
+	if (m_sd_poll_state && !state)
+		m_maincpu->upi41_master_w(m_maincpu->space(), 0, 0);
+
+	m_sd_poll_state = state;
+}
+
+//-------------------------------------------------
+//  sd_poll_r
+//-------------------------------------------------
+
+DECLARE_READ_LINE_MEMBER(dmv_keyboard_device::sd_poll_r)
+{
+	return m_sd_data_state;
+}
diff --git a/src/mess/machine/dmv_keyb.h b/src/mess/machine/dmv_keyb.h
new file mode 100644
index 00000000000..a20f59a27d4
--- /dev/null
+++ b/src/mess/machine/dmv_keyb.h
@@ -0,0 +1,71 @@
+// license:BSD-3-Clause
+// copyright-holders:Sandro Ronco
+/**********************************************************************
+
+    Decision Mate V keyboard emulation
+
+*********************************************************************/
+
+#pragma once
+
+#ifndef __DMV_KEYBOARD__
+#define __DMV_KEYBOARD__
+
+
+#include "emu.h"
+#include "cpu/mcs48/mcs48.h"
+
+
+//**************************************************************************
+//  INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_DMV_KEYBOARD_ADD(_tag) \
+	MCFG_DEVICE_ADD(_tag, DMV_KEYBOARD, 0)
+
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> dmv_keyboard_device
+
+class dmv_keyboard_device : public device_t
+{
+public:
+	// construction/destruction
+	dmv_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+	// optional information overrides
+	virtual const rom_entry *device_rom_region() const;
+	virtual machine_config_constructor device_mconfig_additions() const;
+	virtual ioport_constructor device_input_ports() const;
+
+	DECLARE_WRITE_LINE_MEMBER(sd_poll_w);
+	DECLARE_READ_LINE_MEMBER(sd_poll_r);
+
+	DECLARE_READ8_MEMBER( port1_r );
+	DECLARE_READ8_MEMBER( port2_r );
+	DECLARE_WRITE8_MEMBER( port2_w );
+
+protected:
+	// device-level overrides
+	virtual void device_config_complete() { m_shortname = "dmv_keyb"; }
+	virtual void device_start();
+	virtual void device_reset();
+
+private:
+	required_device<upi41_cpu_device> m_maincpu;
+	required_ioport_array<16> m_keyboard;
+
+	UINT8   m_col;
+	int     m_sd_data_state;
+	int     m_sd_poll_state;
+};
+
+
+// device type definition
+extern const device_type DMV_KEYBOARD;
+
+
+#endif
diff --git a/src/mess/mess.mak b/src/mess/mess.mak
index 9bbe3c0b2dd..e4273a0fc3c 100644
--- a/src/mess/mess.mak
+++ b/src/mess/mess.mak
@@ -2090,6 +2090,7 @@ $(MESSOBJ)/skeleton.a:          \
 	$(MESS_DRIVERS)/dim68k.o    \
 	$(MESS_DRIVERS)/dm7000.o    \
 	$(MESS_DRIVERS)/dmv.o       \
+	$(MESS_MACHINE)/dmv_keyb.o  \
 	$(MESS_DRIVERS)/dps1.o      \
 	$(MESS_DRIVERS)/dsb46.o     \
 	$(MESS_DRIVERS)/dual68.o    \