Separate MS7002 keyboard emulation; use Cyrillic key names and JCUKEN layout

src/mame/drivers/ms6102.cpp

@@ -12,7 +12,7 @@
 
     To do:
     - character attributes
-    - keyboard (MS7002)
+    - improve keyboard response and add LED layout (MS7002)
 
     Chips:
     - DD5 - KR580WM80A (8080 clone) - CPU
@@ -347,7 +347,7 @@ MACHINE_CONFIG_START(ms6102_state::ms6102)
 	MCFG_RIPPLE_COUNTER_STAGES(2)
 	MCFG_RIPPLE_COUNTER_COUNT_OUT_CB(WRITE8(ms6102_state, kbd_uart_clock_w))
 
-	MCFG_DEVICE_ADD("keyboard", VT100_KEYBOARD, 0)
+	MCFG_DEVICE_ADD("keyboard", MS7002, 0)
 	MCFG_VT100_KEYBOARD_SIGNAL_OUT_CALLBACK(DEVWRITELINE("589wa1", ay31015_device, write_si))
 
 	// serial connection to host

src/mame/machine/vt100_kbd.cpp

@@ -8,6 +8,11 @@
         bidirectional wire. The clock that runs the keyboard's UART and
         scan counters is multiplexed with the serial data signal.
 
+        MS7002 is a Soviet clone of the VT100 keyboard. It features a
+        bit-paired JCUKEN layout and Russian/Latin mode select keys, but
+        the codes it produces are mostly the same, as is the electrical
+        interface.
+
 ***************************************************************************/
 
 #include "emu.h"
@@ -17,7 +22,7 @@
 
 
 //**************************************************************************
-//  DEVICE DEFINITIONS
+//  VT100 KEYBOARD DEVICE
 //**************************************************************************
 
 DEFINE_DEVICE_TYPE(VT100_KEYBOARD, vt100_keyboard_device, "vt100_kbd", "VT100 Keyboard")
@@ -94,7 +99,7 @@ static INPUT_PORTS_START(vt100_kbd)
 	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M)
 
 	PORT_START("LINE7")
-	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_Y)
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y)
 	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U)
 	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7)
 	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6)
@@ -160,7 +165,12 @@ INPUT_PORTS_END
 //-------------------------------------------------
 
 vt100_keyboard_device::vt100_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
-	: device_t(mconfig, VT100_KEYBOARD, tag, owner, clock)
+	: vt100_keyboard_device(mconfig, VT100_KEYBOARD, tag, owner, clock)
+{
+}
+
+vt100_keyboard_device::vt100_keyboard_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock)
+	: device_t(mconfig, type, tag, owner, clock)
 	, m_signal_out_cb(*this)
 	, m_uart(*this, "uart")
 	, m_speaker(*this, "beeper")
@@ -263,7 +273,7 @@ WRITE_LINE_MEMBER(vt100_keyboard_device::signal_line_w)
 	if (machine().time() > m_last_signal_change + attotime::from_usec(5))
 		m_uart->write_si(m_signal_line);
 
-	if (m_uart->tbmt_r())
+	if (scan_enabled())
 		m_scan_counter->clock_w(state);
 
 	if (state)
@@ -282,7 +292,10 @@ WRITE_LINE_MEMBER(vt100_keyboard_device::signal_line_w)
 			m_speaker->set_state(BIT(data, 7));
 
 			if (BIT(data, 6))
+			{
 				m_scan_counter->reset_w(0);
+				scan_start();
+			}
 		}
 	}
 
@@ -329,3 +342,199 @@ WRITE8_MEMBER(vt100_keyboard_device::key_scan_w)
 	else
 		m_last_scan = data;
 }
+
+
+//**************************************************************************
+//  MS7002 KEYBOARD DEVICE
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(MS7002, ms7002_device, "ms7002", "MS7002 Keyboard")
+
+static INPUT_PORTS_START(ms7002)
+	PORT_START("LINE0")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD))
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD))
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD))
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD))
+
+	PORT_START("LINE1")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED)
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9f\xd0\xa4" "3") PORT_CODE(KEYCODE_F3)
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9f\xd0\xa4" "4") PORT_CODE(KEYCODE_F4)
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x92\xd0\x92\xd0\x9e\xd0\x94") PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(ENTER_PAD))
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Keypad ,") PORT_CODE(KEYCODE_PLUS_PAD)
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD))
+
+	PORT_START("LINE2")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9b\xd0\x90\xd0\xa2") // ЛАТ = латинские
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9f\xd0\xa4" "1") PORT_CODE(KEYCODE_F1)
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9f\xd0\xa4" "2") PORT_CODE(KEYCODE_F2)
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD))
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD))
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD))
+
+	PORT_START("LINE3")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('_') // note that this does NOT double as Ъ
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x97\xd0\x91") PORT_CODE(KEYCODE_DEL) // ЗБ = забой
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9f\xd0\xa0\xd0\x92") PORT_CODE(KEYCODE_F6) // ПРВ = перерыв
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x92\xd0\xa8") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(0x08) // ВШ = возврат на шаг
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD))
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD))
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD))
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(MINUS_PAD))
+
+	PORT_START("LINE4")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x92\xd0\x9a") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(0x0d) // ВК = возврат каретки
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa9 ]") PORT_CODE(KEYCODE_O) PORT_CHAR('}') PORT_CHAR(']')
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa7 \xc2\xac") PORT_CODE(KEYCODE_X) PORT_CHAR(0x203e, '~') PORT_CHAR(0xac, '^')
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR(';') PORT_CHAR('+')
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('-') PORT_CHAR('=')
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('0')
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9f\xd0\xa1") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(0x0a) // ПС = перевод строки
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED)
+
+	PORT_START("LINE5")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9f P") PORT_CODE(KEYCODE_G) PORT_CHAR('p') PORT_CHAR('P') PORT_CHAR(0x10)
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa8 [") PORT_CODE(KEYCODE_I) PORT_CHAR('{') PORT_CHAR('[')
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(':') PORT_CHAR('*')
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa0\xd0\xa3\xd0\xa1") // РУС = русские
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xad \\") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('|') PORT_CHAR('\\')
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED) // possibly Keypad 9
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('.') PORT_CHAR('>')
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('/') PORT_CHAR('?')
+
+	PORT_START("LINE6")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9e O") PORT_CODE(KEYCODE_J) PORT_CHAR('o') PORT_CHAR('O') PORT_CHAR(0x0f)
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x98 I") PORT_CODE(KEYCODE_B) PORT_CHAR('i') PORT_CHAR('I')
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('9') PORT_CHAR(')')
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('8') PORT_CHAR('(')
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9b L") PORT_CODE(KEYCODE_K) PORT_CHAR('l') PORT_CHAR('L') PORT_CHAR(0x0c)
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xae @") PORT_CODE(KEYCODE_STOP) PORT_CHAR('`') PORT_CHAR('@')
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RALT) PORT_CHAR(',') PORT_CHAR('<')
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9c M") PORT_CODE(KEYCODE_V) PORT_CHAR('m') PORT_CHAR('M')
+
+	PORT_START("LINE7")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xab Y") PORT_CODE(KEYCODE_S) PORT_CHAR('y') PORT_CHAR('Y') PORT_CHAR(0x19)
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa3 U") PORT_CODE(KEYCODE_E) PORT_CHAR('u') PORT_CHAR('U') PORT_CHAR(0x15)
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('7') PORT_CHAR('\'')
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('6') PORT_CHAR('&')
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9a K") PORT_CODE(KEYCODE_R) PORT_CHAR('k') PORT_CHAR('K') PORT_CHAR(0x0b)
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x99 J") PORT_CODE(KEYCODE_Q) PORT_CHAR('j') PORT_CHAR('J')
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x9d N") PORT_CODE(KEYCODE_Y) PORT_CHAR('n') PORT_CHAR('N') PORT_CHAR(0x0e)
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
+
+	PORT_START("LINE8")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa2 T") PORT_CODE(KEYCODE_N) PORT_CHAR('t') PORT_CHAR('T') PORT_CHAR(0x14)
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa0 R") PORT_CODE(KEYCODE_H) PORT_CHAR('r') PORT_CHAR('R') PORT_CHAR(0x12)
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 \xc2\xa4") PORT_CODE(KEYCODE_5) PORT_CHAR('4') PORT_CHAR(0xa4, '$')
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('5') PORT_CHAR('%')
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x93 G") PORT_CODE(KEYCODE_U) PORT_CHAR('g') PORT_CHAR('G') PORT_CHAR(0x07)
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa5 H") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('h') PORT_CHAR('H')
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x91 B") PORT_CODE(KEYCODE_COMMA) PORT_CHAR('b') PORT_CHAR('B') PORT_CHAR(0x02)
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x96 V") PORT_CODE(KEYCODE_COLON) PORT_CHAR('v') PORT_CHAR('V') PORT_CHAR(0x16)
+
+	PORT_START("LINE9")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x92 W") PORT_CODE(KEYCODE_D) PORT_CHAR('w') PORT_CHAR('W') PORT_CHAR(0x17)
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x95 E") PORT_CODE(KEYCODE_T) PORT_CHAR('e') PORT_CHAR('E') PORT_CHAR(0x05)
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('3') PORT_CHAR('#')
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('2') PORT_CHAR('"')
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa4 F") PORT_CODE(KEYCODE_A) PORT_CHAR('f') PORT_CHAR('F') PORT_CHAR(0x06)
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x94 D") PORT_CODE(KEYCODE_L) PORT_CHAR('d') PORT_CHAR('D') PORT_CHAR(0x04)
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xac X") PORT_CODE(KEYCODE_M) PORT_CHAR('x') PORT_CHAR('X') PORT_CHAR(0x18)
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa6 C") PORT_CODE(KEYCODE_W) PORT_CHAR('c') PORT_CHAR('C') PORT_CHAR(0x03)
+
+	PORT_START("LINEA")
+	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xaf Q") PORT_CODE(KEYCODE_Z) PORT_CHAR('q') PORT_CHAR('Q') PORT_CHAR(0x11)
+	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('1') PORT_CHAR('!')
+	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x90\xd0\xa0" "2") PORT_CODE(KEYCODE_ESC) PORT_CHAR(0x1b) // АР2 = авторегистр 2
+	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa2\xd0\x90\xd0\x91") PORT_CODE(KEYCODE_TAB) PORT_CHAR(0x09) // ТАБ = табуляция
+	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x90 A") PORT_CODE(KEYCODE_F) PORT_CHAR('a') PORT_CHAR('A') PORT_CHAR(0x01)
+	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa1 S") PORT_CODE(KEYCODE_C) PORT_CHAR('s') PORT_CHAR('S') PORT_CHAR(0x13)
+	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa1\xd0\xa2\xd0\x9e\xd0\x9f") PORT_CODE(KEYCODE_LALT) // СТОП
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x97 Z") PORT_CODE(KEYCODE_P) PORT_CHAR('z') PORT_CHAR('Z') PORT_CHAR(0x1a)
+
+	PORT_START("LINEB")
+	PORT_BIT(0x7F, IP_ACTIVE_LOW, IPT_UNUSED)
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa3\xd0\xa1\xd0\xa2") PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F1) ) // УСТ = установка
+
+	PORT_START("LINEC")
+	PORT_BIT(0x7F, IP_ACTIVE_LOW, IPT_UNUSED)
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\xa3\xd0\x9f\xd0\xa0") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2) // УПР = управляющий
+
+	PORT_START("LINED")
+	PORT_BIT(0x7F, IP_ACTIVE_LOW, IPT_UNUSED)
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xd0\x92\xd0\xa0") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) // ВР = верхний регистр
+
+	PORT_START("LINEE")
+	PORT_BIT(0x7F, IP_ACTIVE_LOW, IPT_UNUSED)
+	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) // maybe
+
+	PORT_START("LINEF")
+	PORT_BIT(0x7F, IP_ACTIVE_LOW,  IPT_UNUSED)
+	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) // Always return 0x7f on last scan line
+INPUT_PORTS_END
+
+
+//-------------------------------------------------
+//  ms7002_device - constructor
+//-------------------------------------------------
+
+ms7002_device::ms7002_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+	: vt100_keyboard_device(mconfig, MS7002, tag, owner, clock)
+	, m_scan_enable(false)
+{
+}
+
+
+//-------------------------------------------------
+//  device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+MACHINE_CONFIG_START(ms7002_device::device_add_mconfig)
+	vt100_keyboard_device::device_add_mconfig(config);
+
+	MCFG_DEVICE_MODIFY("uart")
+	MCFG_AY31015_WRITE_TBMT_CB(WRITELINE(ms7002_device, scan_disable_w))
+MACHINE_CONFIG_END
+
+
+//-------------------------------------------------
+//  input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor ms7002_device::device_input_ports() const
+{
+	return INPUT_PORTS_NAME(ms7002);
+}
+
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void ms7002_device::device_start()
+{
+	vt100_keyboard_device::device_start();
+
+	save_item(NAME(m_scan_enable));
+}
+
+
+//-------------------------------------------------
+//  scan_disable_w - suspend scan count once
+//  keycode is being transmitted
+//-------------------------------------------------
+
+WRITE_LINE_MEMBER(ms7002_device::scan_disable_w)
+{
+	if (!state)
+		m_scan_enable = false;
+}

src/mame/machine/vt100_kbd.h

@@ -43,14 +43,20 @@ public:
 	DECLARE_WRITE_LINE_MEMBER(signal_line_w);
 
 protected:
+	vt100_keyboard_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock);
+
 	virtual void device_resolve_objects() override;
 	virtual void device_start() override;
 	virtual void device_add_mconfig(machine_config &config) override;
 	virtual ioport_constructor device_input_ports() const override;
 
+	virtual bool scan_enabled() const { return m_uart->tbmt_r(); }
+	virtual void scan_start() { }
+
 private:
 	// internal helpers
 	DECLARE_WRITE_LINE_MEMBER(signal_out_w);
+	DECLARE_WRITE_LINE_MEMBER(scan_disable_w);
 	DECLARE_WRITE8_MEMBER(key_scan_w);
 
 	devcb_write_line m_signal_out_cb;
@@ -70,7 +76,30 @@ private:
 	u8 m_last_scan;
 };
 
-// device type definition
+// ======================> ms7002_device
+
+class ms7002_device : public vt100_keyboard_device
+{
+public:
+	// construction/destruction
+	ms7002_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+protected:
+	virtual void device_start() override;
+	virtual void device_add_mconfig(machine_config &config) override;
+	virtual ioport_constructor device_input_ports() const override;
+
+	virtual bool scan_enabled() const override { return m_scan_enable; }
+	virtual void scan_start() override { m_scan_enable = true; }
+
+private:
+	DECLARE_WRITE_LINE_MEMBER(scan_disable_w);
+
+	bool m_scan_enable;
+};
+
+// device type definitions
 DECLARE_DEVICE_TYPE(VT100_KEYBOARD, vt100_keyboard_device)
+DECLARE_DEVICE_TYPE(MS7002, ms7002_device)
 
 #endif // MAME_MACHINE_VT100_KBD_H