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// license:BSD-3-Clause
// copyright-holders:Peter Trauner
/**********************************************************************
8042 Keyboard Controller Emulation
This is the keyboard controller used in the IBM AT and further
models. It is a popular controller for PC style keyboards
**********************************************************************/
#ifndef KBDC8042_H
#define KBDC8042_H
#include "emu.h"
#include "machine/pckeybrd.h"
enum kbdc8042_type_t
{
KBDC8042_STANDARD,
KBDC8042_PS2, /* another timing of integrated controller */
KBDC8042_AT386 /* hack for at386 driver */
};
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_KBDC8042_KEYBOARD_TYPE(_kbdt) \
kbdc8042_device::set_keyboard_type(*device, _kbdt);
#define MCFG_KBDC8042_SYSTEM_RESET_CB(_devcb) \
devcb = &kbdc8042_device::set_system_reset_callback(*device, DEVCB_##_devcb);
#define MCFG_KBDC8042_GATE_A20_CB(_devcb) \
devcb = &kbdc8042_device::set_gate_a20_callback(*device, DEVCB_##_devcb);
#define MCFG_KBDC8042_INPUT_BUFFER_FULL_CB(_devcb) \
devcb = &kbdc8042_device::set_input_buffer_full_callback(*device, DEVCB_##_devcb);
#define MCFG_KBDC8042_OUTPUT_BUFFER_EMPTY_CB(_devcb) \
devcb = &kbdc8042_device::set_output_buffer_empty_callback(*device, DEVCB_##_devcb);
#define MCFG_KBDC8042_SPEAKER_CB(_devcb) \
devcb = &kbdc8042_device::set_speaker_callback(*device, DEVCB_##_devcb);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> kbdc8042_device
class kbdc8042_device : public device_t
{
public:
// construction/destruction
kbdc8042_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual machine_config_constructor device_mconfig_additions() const override;
static void set_keyboard_type(device_t &device, kbdc8042_type_t keybtype) { downcast<kbdc8042_device &>(device).m_keybtype = keybtype; }
template<class _Object> static devcb_base &set_system_reset_callback(device_t &device, _Object object) { return downcast<kbdc8042_device &>(device).m_system_reset_cb.set_callback(object); }
template<class _Object> static devcb_base &set_gate_a20_callback(device_t &device, _Object object) { return downcast<kbdc8042_device &>(device).m_gate_a20_cb.set_callback(object); }
template<class _Object> static devcb_base &set_input_buffer_full_callback(device_t &device, _Object object) { return downcast<kbdc8042_device &>(device).m_input_buffer_full_cb.set_callback(object); }
template<class _Object> static devcb_base &set_output_buffer_empty_callback(device_t &device, _Object object) { return downcast<kbdc8042_device &>(device).m_output_buffer_empty_cb.set_callback(object); }
template<class _Object> static devcb_base &set_speaker_callback(device_t &device, _Object object) { return downcast<kbdc8042_device &>(device).m_speaker_cb.set_callback(object); }
DECLARE_READ8_MEMBER( data_r );
DECLARE_WRITE8_MEMBER( data_w );
DECLARE_WRITE_LINE_MEMBER( write_out2 );
DECLARE_WRITE_LINE_MEMBER( keyboard_w );
void at_8042_set_outport(UINT8 data, int initial);
TIMER_CALLBACK_MEMBER( kbdc8042_clr_int );
void at_8042_receive(UINT8 data);
void at_8042_check_keyboard();
void at_8042_clear_keyboard_received();
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
UINT8 m_inport, m_outport, m_data, m_command;
struct {
int received;
int on;
} m_keyboard;
struct {
int received;
int on;
} m_mouse;
int m_last_write_to_control;
int m_sending;
int m_send_to_mouse;
int m_operation_write_state;
int m_status_read_mode;
int m_speaker;
int m_out2;
/* temporary hack */
int m_offset1;
int m_poll_delay;
required_device<at_keyboard_device> m_keyboard_dev;
kbdc8042_type_t m_keybtype;
devcb_write_line m_system_reset_cb;
devcb_write_line m_gate_a20_cb;
devcb_write_line m_input_buffer_full_cb;
devcb_write_line m_output_buffer_empty_cb;
devcb_write8 m_speaker_cb;
};
// device type definition
extern const device_type KBDC8042;
#endif /* KBDC8042_H */
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