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// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic, Jonathan Gevaryahu, AJR
/***************************************************************************
DEC VT100 keyboard emulation
***************************************************************************/
#ifndef MAME_MACHINE_VT100_KBD_H
#define MAME_MACHINE_VT100_KBD_H
#pragma once
#include "machine/ay31015.h"
#include "machine/ripple_counter.h"
#include "sound/beep.h"
#include "speaker.h"
//**************************************************************************
// CONFIGURATION MACROS
//**************************************************************************
#define MCFG_VT100_KEYBOARD_SIGNAL_OUT_CALLBACK(_devcb) \
devcb = &downcast<vt100_keyboard_device &>(*device).set_signal_out_callback(DEVCB_##_devcb);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> vt100_keyboard_device
class vt100_keyboard_device : public device_t
{
public:
// construction/destruction
vt100_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
// configuration
template <class Object> devcb_base &set_signal_out_callback(Object &&cb) { return m_signal_out_cb.set_callback(std::forward<Object>(cb)); }
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;
required_device<ay31015_device> m_uart;
required_device<beep_device> m_speaker;
required_device<ripple_counter_device> m_scan_counter;
required_ioport_array<16> m_key_row;
output_finder<> m_online_led;
output_finder<> m_local_led;
output_finder<> m_locked_led;
output_finder<4> m_ln_led;
bool m_signal_line;
attotime m_last_signal_change;
u8 m_last_scan;
};
// ======================> 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
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