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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Luxor ABC-800 keyboard emulation
**********************************************************************/
#ifndef MAME_BUS_ABCKB_ABC800KB_H
#define MAME_BUS_ABCKB_ABC800KB_H
#pragma once
#include "cpu/mcs48/mcs48.h"
#include "abckb.h"
#include "sound/discrete.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> abc800_keyboard_device
class abc800_keyboard_device : public device_t,
public abc_keyboard_interface
{
public:
// construction/destruction
abc800_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// abc_keyboard_interface overrides
virtual void txd_w(int state) override;
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
// optional information overrides
virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
virtual ioport_constructor device_input_ports() const override ATTR_COLD;
private:
void serial_output(int state);
TIMER_CALLBACK_MEMBER(serial_clock);
void key_down(int state);
uint8_t kb_p1_r();
void kb_p1_w(uint8_t data);
void kb_p2_w(uint8_t data);
int kb_t1_r();
required_device<i8048_device> m_maincpu;
required_ioport_array<12> m_x;
int m_row;
int m_txd;
int m_clk;
int m_stb;
int m_keydown;
// timers
emu_timer *m_serial_timer;
};
// device type definition
DECLARE_DEVICE_TYPE(ABC800_KEYBOARD, abc800_keyboard_device)
#endif // MAME_BUS_ABCKB_ABC800KB_H
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