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diff --git a/src/mame/machine/informer_207_376_kbd.h b/src/mame/machine/informer_207_376_kbd.h
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+// license: BSD-3-Clause
+// copyright-holders: Dirk Best
+/***************************************************************************
+
+ Informer 207/376 Keyboard (HLE)
+
+***************************************************************************/
+
+#ifndef MAME_MACHINE_INFORMER_207_376_KBD_H
+#define MAME_MACHINE_INFORMER_207_376_KBD_H
+
+#pragma once
+
+#include "machine/keyboard.h"
+#include "diserial.h"
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> informer_207_376_kbd_hle_device
+
+class informer_207_376_kbd_hle_device : public device_t,
+ public device_buffered_serial_interface<16>,
+ protected device_matrix_keyboard_interface<8>
+{
+public:
+ // construction/destruction
+ informer_207_376_kbd_hle_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+
+ // callbacks
+ auto tx_handler() { return m_tx_handler.bind(); }
+
+ // from host
+ void rx_w(int state);
+
+protected:
+ // device_t overrides
+ virtual ioport_constructor device_input_ports() const override;
+ virtual void device_start() override;
+ virtual void device_reset() override;
+
+ // device_buffered_serial_interface overrides
+ virtual void tra_callback() override;
+ virtual void received_byte(uint8_t byte) override;
+
+ // device_matrix_keyboard_interface overrides
+ virtual void key_make(uint8_t row, uint8_t column) override;
+ virtual void key_break(uint8_t row, uint8_t column) override;
+ virtual void key_repeat(uint8_t row, uint8_t column) override;
+
+private:
+ devcb_write_line m_tx_handler;
+};
+
+// device type definition
+DECLARE_DEVICE_TYPE(INFORMER_207_376_KBD_HLE, informer_207_376_kbd_hle_device)
+
+#endif // MAME_MACHINE_INFORMER_207_376_KBD_H