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/***************************************************************************
IBM PC AT compatibles 8042 keyboard controller
***************************************************************************/
#pragma once
#ifndef __AT_KEYBC_H__
#define __AT_KEYBC_H__
#include "emu.h"
#include "cpu/mcs48/mcs48.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_AT_KEYBOARD_CONTROLLER_SYSTEM_RESET_CB(_devcb) \
devcb = &at_keyboard_controller_device::set_system_reset_callback(*device, DEVCB2_##_devcb);
#define MCFG_AT_KEYBOARD_CONTROLLER_GATE_A20_CB(_devcb) \
devcb = &at_keyboard_controller_device::set_gate_a20_callback(*device, DEVCB2_##_devcb);
#define MCFG_AT_KEYBOARD_CONTROLLER_INPUT_BUFFER_FULL_CB(_devcb) \
devcb = &at_keyboard_controller_device::set_input_buffer_full_callback(*device, DEVCB2_##_devcb);
#define MCFG_AT_KEYBOARD_CONTROLLER_OUTPUT_BUFFER_EMPTY_CB(_devcb) \
devcb = &at_keyboard_controller_device::set_output_buffer_empty_callback(*device, DEVCB2_##_devcb);
#define MCFG_AT_KEYBOARD_CONTROLLER_KEYBOARD_CLOCK_CB(_devcb) \
devcb = &at_keyboard_controller_device::set_keyboard_clock_callback(*device, DEVCB2_##_devcb);
#define MCFG_AT_KEYBOARD_CONTROLLER_KEYBOARD_DATA_CB(_devcb) \
devcb = &at_keyboard_controller_device::set_keyboard_data_callback(*device, DEVCB2_##_devcb);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> at_keyboard_controller_device
class at_keyboard_controller_device : public device_t
{
public:
// construction/destruction
at_keyboard_controller_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
template<class _Object> static devcb2_base &set_system_reset_callback(device_t &device, _Object object) { return downcast<at_keyboard_controller_device &>(device).m_system_reset_cb.set_callback(object); }
template<class _Object> static devcb2_base &set_gate_a20_callback(device_t &device, _Object object) { return downcast<at_keyboard_controller_device &>(device).m_gate_a20_cb.set_callback(object); }
template<class _Object> static devcb2_base &set_input_buffer_full_callback(device_t &device, _Object object) { return downcast<at_keyboard_controller_device &>(device).m_input_buffer_full_cb.set_callback(object); }
template<class _Object> static devcb2_base &set_output_buffer_empty_callback(device_t &device, _Object object) { return downcast<at_keyboard_controller_device &>(device).m_output_buffer_empty_cb.set_callback(object); }
template<class _Object> static devcb2_base &set_keyboard_clock_callback(device_t &device, _Object object) { return downcast<at_keyboard_controller_device &>(device).m_keyboard_clock_cb.set_callback(object); }
template<class _Object> static devcb2_base &set_keyboard_data_callback(device_t &device, _Object object) { return downcast<at_keyboard_controller_device &>(device).m_keyboard_data_cb.set_callback(object); }
// internal 8042 interface
DECLARE_READ8_MEMBER( t0_r );
DECLARE_READ8_MEMBER( t1_r );
DECLARE_READ8_MEMBER( p1_r );
DECLARE_READ8_MEMBER( p2_r );
DECLARE_WRITE8_MEMBER( p2_w );
// interface to the host pc
DECLARE_READ8_MEMBER( data_r );
DECLARE_WRITE8_MEMBER( data_w );
DECLARE_READ8_MEMBER( status_r );
DECLARE_WRITE8_MEMBER( command_w );
// interface to the keyboard
DECLARE_WRITE_LINE_MEMBER( keyboard_clock_w );
DECLARE_WRITE_LINE_MEMBER( keyboard_data_w );
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
virtual const rom_entry *device_rom_region() const;
virtual machine_config_constructor device_mconfig_additions() const;
private:
// internal state
upi41_cpu_device *m_cpu;
// interface to the host pc
devcb2_write_line m_system_reset_cb;
devcb2_write_line m_gate_a20_cb;
devcb2_write_line m_input_buffer_full_cb;
devcb2_write_line m_output_buffer_empty_cb;
// interface to the keyboard
devcb2_write_line m_keyboard_clock_cb;
devcb2_write_line m_keyboard_data_cb;
UINT8 m_clock_signal;
UINT8 m_data_signal;
};
// device type definition
extern const device_type AT_KEYBOARD_CONTROLLER;
#endif /* __AT_KEYBC__ */
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