blob: 01a5bb0f6ec3da0a69597908561aee15418e48fa (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/***************************************************************************
IBM PC AT compatibles 8042 keyboard controller
***************************************************************************/
#pragma once
#ifndef __AT_KEYBC_H__
#define __AT_KEYBC_H__
#include "emu.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_AT_KEYBOARD_CONTROLLER_ADD(_tag, _clock, _interface) \
MCFG_DEVICE_ADD(_tag, AT_KEYBOARD_CONTROLLER, _clock) \
MCFG_DEVICE_CONFIG(_interface)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> at_keyboard_controller_interface
struct at_keyboard_controller_interface
{
// interface to the host pc
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;
// interface to the keyboard
devcb_write_line m_keyboard_clock_cb;
devcb_write_line m_keyboard_data_cb;
};
// ======================> at_keyboard_controller_device
class at_keyboard_controller_device : public device_t,
public at_keyboard_controller_interface
{
public:
// construction/destruction
at_keyboard_controller_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// 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 void device_config_complete();
virtual const rom_entry *device_rom_region() const;
virtual machine_config_constructor device_mconfig_additions() const;
private:
// internal state
device_t *m_cpu;
devcb_resolved_write_line m_system_reset_func;
devcb_resolved_write_line m_gate_a20_func;
devcb_resolved_write_line m_input_buffer_full_func;
devcb_resolved_write_line m_output_buffer_empty_func;
devcb_resolved_write_line m_keyboard_clock_func;
devcb_resolved_write_line m_keyboard_data_func;
UINT8 m_clock_signal;
UINT8 m_data_signal;
};
// device type definition
extern const device_type AT_KEYBOARD_CONTROLLER;
#endif /* __AT_KEYBC__ */
|