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// license:BSD-3-Clause
// copyright-holders:Angelo Salese
/***************************************************************************
PC-9801 Keyboard simulation
***************************************************************************/
#ifndef MAME_MACHINE_PC9801_KBD_H
#define MAME_MACHINE_PC9801_KBD_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> pc9801_kbd_device
class pc9801_kbd_device : public device_t
{
public:
// construction/destruction
pc9801_kbd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
auto irq_wr_callback() { return m_write_irq.bind(); }
virtual ioport_constructor device_input_ports() const override;
// I/O operations
DECLARE_WRITE8_MEMBER( tx_w );
DECLARE_READ8_MEMBER( rx_r );
DECLARE_INPUT_CHANGED_MEMBER(key_stroke);
protected:
// device-level overrides
virtual void device_validity_check(validity_checker &valid) const override;
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
devcb_write_line m_write_irq;
static const device_timer_id RX_TIMER = 1;
emu_timer * m_rxtimer;
uint8_t m_rx_buf[0x80];
uint8_t m_keyb_tx;
uint8_t m_keyb_rx;
bool m_key_avail;
};
// device type definition
DECLARE_DEVICE_TYPE(PC9801_KBD, pc9801_kbd_device)
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
#endif // MAME_MACHINE_PC9801_KBD_H
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