summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/machine/dec_lk201.h
blob: 87b61ad3af66292a44d484ecfe275b149fe9f235 (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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
// license:BSD-3-Clause
// copyright-holders:R. Belmont, M. Burke
#pragma once

#ifndef __LK201_H__
#define __LK201_H__

#include "emu.h"
#include "sound/beep.h"

//**************************************************************************
//  MACROS / CONSTANTS
//**************************************************************************

#define LK_CMD_LEDS_ON          0x13    /* light LEDs - 1st param: led bitmask */
#define LK_CMD_LEDS_OFF         0x11    /* turn off LEDs */

#define LK_CMD_DIS_KEYCLK       0x99    /* disable the keyclick */
#define LK_CMD_ENB_KEYCLK       0x1b    /* enable the keyclick - 1st param: volume */
#define LK_CMD_DIS_CTLCLK       0xb9    /* disable the Ctrl keyclick */
#define LK_CMD_ENB_CTLCLK       0xbb    /* enable the Ctrl keyclick */
#define LK_CMD_SOUND_CLK        0x9f    /* emit a keyclick  - 1st param: volume */
#define LK_CMD_DIS_BELL         0xa1    /* disable the bell */
#define LK_CMD_ENB_BELL         0x23    /* enable the bell - 1st param: volume */
#define LK_CMD_BELL             0xa7    /* emit a bell - 1st param: volume */

// TCR - Timer Compare Register
#define TCR_OCIE 0x40 // Bit 6 (output compare IRQ enable)
#define TCR_OLVL 0x01 // Bit 1 (output level)

// TSR - Timer Status Register
#define TSR_OCFL 0x40 // TSR (68HC05 output compare flag)

//**************************************************************************
//  INTERFACE CONFIGURATION MACROS
//**************************************************************************

#define MCFG_LK201_TX_HANDLER(_cb) \
	devcb = &lk201_device::set_tx_handler(*device, DEVCB_##_cb);

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

// ======================> lk201_device

class lk201_device : public device_t, public device_serial_interface
{
public:
	// construction/destruction
	lk201_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

	DECLARE_READ8_MEMBER(ddr_r);
	DECLARE_WRITE8_MEMBER(ddr_w);
	DECLARE_READ8_MEMBER(ports_r);
	DECLARE_WRITE8_MEMBER(ports_w);
	DECLARE_READ8_MEMBER(sci_r);
	DECLARE_WRITE8_MEMBER(sci_w);
	DECLARE_READ8_MEMBER(spi_r);
	DECLARE_WRITE8_MEMBER(spi_w);
	DECLARE_READ8_MEMBER(timer_r);
	DECLARE_WRITE8_MEMBER(timer_w);

	template<class _Object> static devcb_base &set_tx_handler(device_t &device, _Object wr) { return downcast<lk201_device &>(device).m_tx_handler.set_callback(wr); }

protected:
	// device-level overrides
	virtual machine_config_constructor device_mconfig_additions() const override;
	virtual const tiny_rom_entry *device_rom_region() const override;
	virtual ioport_constructor device_input_ports() const override;
	virtual void device_start() override;
	virtual void device_reset() override;
	virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;

	// device_serial overrides
	virtual void rcv_complete() override;    // Rx completed receiving byte
	virtual void tra_complete() override;    // Tx completed sending byte
	virtual void tra_callback() override;    // Tx send bit

private:
	UINT8 ddrs[3];
	UINT8 ports[3];
	UINT8 led_data;
	UINT8 kbd_data;

	union {
		struct {
			UINT8 tcr;
			UINT8 tsr;
			UINT8 icrh;
			UINT8 icrl;
			UINT8 ocrh;
			UINT8 ocrl;
			UINT8 crh;
			UINT8 crl;
			UINT8 acrh;
			UINT8 acrl;
		};
		UINT8 regs[10];
	} m_timer;

	emu_timer *m_count;
	emu_timer *m_beeper;

	UINT8 sci_ctl2;
	UINT8 sci_status;
	//UINT8 sci_data;

	UINT8 spi_status;
	UINT8 spi_data;

	required_device<cpu_device> m_maincpu;
	required_device<beep_device> m_speaker;

	required_ioport m_kbd0;
	required_ioport m_kbd1;
	required_ioport m_kbd2;
	required_ioport m_kbd3;
	required_ioport m_kbd4;
	required_ioport m_kbd5;
	required_ioport m_kbd6;
	required_ioport m_kbd7;
	required_ioport m_kbd8;
	required_ioport m_kbd9;
	required_ioport m_kbd10;
	required_ioport m_kbd11;
	required_ioport m_kbd12;
	required_ioport m_kbd13;
	required_ioport m_kbd14;
	required_ioport m_kbd15;
	required_ioport m_kbd16;
	required_ioport m_kbd17;

	void send_port(address_space &space, UINT8 offset, UINT8 data);
	void update_interrupts();

	int m_kbd_state;

	devcb_write_line m_tx_handler;
};

// device type definition
extern const device_type LK201;

#endif