summaryrefslogtreecommitdiffstats
path: root/src/devices/bus/pc_kbd/pcat84.h
blob: 4b97b8e7aa06d4bf775e34caea7c931d3d14574c (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
98
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************

    IBM Model F PC/AT 84-key / 3270PC 122-key keyboard emulation

*********************************************************************/

#ifndef MAME_BUS_PC_KBD_PCAT84_H
#define MAME_BUS_PC_KBD_PCAT84_H

#pragma once

#include "cpu/mcs48/mcs48.h"
#include "pc_kbdc.h"
#include "machine/rescap.h"



//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

// ======================> ibm_pc_at_84_keyboard_device

class ibm_pc_at_84_keyboard_device :  public device_t,
										public device_pc_kbd_interface
{
public:
	// construction/destruction
	ibm_pc_at_84_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

protected:
	ibm_pc_at_84_keyboard_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);

	// device-level overrides
	virtual void device_start() override;
	virtual void device_reset() override;

	// optional information overrides
	virtual const tiny_rom_entry *device_rom_region() const override;
	virtual void device_add_mconfig(machine_config &config) override;
	virtual ioport_constructor device_input_ports() const override;

	// device_pc_kbd_interface overrides
	virtual DECLARE_WRITE_LINE_MEMBER( clock_write ) override { m_maincpu->set_input_line(MCS48_INPUT_IRQ, state); };
	virtual DECLARE_WRITE_LINE_MEMBER( data_write ) override { };

private:
	DECLARE_WRITE8_MEMBER( bus_w );
	DECLARE_READ8_MEMBER( p1_r );
	DECLARE_WRITE8_MEMBER( p1_w );
	DECLARE_READ8_MEMBER( p2_r );
	DECLARE_WRITE8_MEMBER( p2_w );
	DECLARE_READ_LINE_MEMBER( t0_r );
	DECLARE_READ_LINE_MEMBER( t1_r );

	enum
	{
		LED_SCROLL = 0,
		LED_NUM,
		LED_CAPS
	};

	int key_depressed();

	required_device<cpu_device> m_maincpu;
	required_ioport_array<16> m_dr;
	optional_ioport m_kbdida;
	optional_ioport m_kbdidb;
	output_finder<3> m_leds;

	uint8_t m_db;
	int m_cnt;
	int m_sense;
	int m_t1;
};


// ======================> ibm_3270pc_122_keyboard_device

class ibm_3270pc_122_keyboard_device :  public ibm_pc_at_84_keyboard_device
{
public:
	// construction/destruction
	ibm_3270pc_122_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	// optional information overrides
	virtual const tiny_rom_entry *device_rom_region() const override;
	virtual ioport_constructor device_input_ports() const override;
};


// device type definition
DECLARE_DEVICE_TYPE(PC_KBD_IBM_PC_AT_84,   ibm_pc_at_84_keyboard_device)
DECLARE_DEVICE_TYPE(PC_KBD_IBM_3270PC_122, ibm_3270pc_122_keyboard_device)

#endif // MAME_BUS_PC_KBD_PCAT84_H