summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/vip/vp585.cpp
blob: 2112637ae6b528be06ca8909395820e4826bb6bd (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
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************

    RCA VIP Expansion Keypad Interface Board VP585 emulation

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

#include "emu.h"
#include "vp585.h"



//**************************************************************************
//  DEVICE DEFINITIONS
//**************************************************************************

DEFINE_DEVICE_TYPE(VP585, vp585_device, "vp585", "VP-585 Keyboard Interface + VP-580 16-key keypad")


//-------------------------------------------------
//  INPUT_PORTS( vp585 )
//-------------------------------------------------

static INPUT_PORTS_START( vp585 )
	PORT_START("J1")
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad 0")
	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad 1")
	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad 2")
	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad 3")
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad 4")
	PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad 5")
	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad 6")
	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad 7")
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad 8")
	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad 9")
	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad A")
	PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad B")
	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad C")
	PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad D")
	PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad E")
	PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 1 Keypad F")

	PORT_START("J2")
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad 0")
	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad 1")
	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad 2")
	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad 3")
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad 4")
	PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad 5")
	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad 6")
	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad 7")
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad 8")
	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad 9")
	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad A")
	PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad B")
	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad C")
	PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad D")
	PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad E")
	PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Player 2 Keypad F")
INPUT_PORTS_END


//-------------------------------------------------
//  input_ports - device-specific input ports
//-------------------------------------------------

ioport_constructor vp585_device::device_input_ports() const
{
	return INPUT_PORTS_NAME( vp585 );
}



//**************************************************************************
//  LIVE DEVICE
//**************************************************************************

//-------------------------------------------------
//  vp585_device - constructor
//-------------------------------------------------

vp585_device::vp585_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
	device_t(mconfig, VP585, tag, owner, clock),
	device_vip_expansion_card_interface(mconfig, *this),
	m_j1(*this, "J1"),
	m_j2(*this, "J2"),
	m_keylatch(0)
{
}


//-------------------------------------------------
//  device_start - device-specific startup
//-------------------------------------------------

void vp585_device::device_start()
{
	// state saving
	save_item(NAME(m_keylatch));
}


//-------------------------------------------------
//  vip_io_w - I/O write
//-------------------------------------------------

void vp585_device::vip_io_w(offs_t offset, uint8_t data)
{
	if (offset == 0x02)
	{
		m_keylatch = data & 0x0f;
	}
}


//-------------------------------------------------
//  vip_ef3_r - EF3 read
//-------------------------------------------------

int vp585_device::vip_ef3_r()
{
	return BIT(m_j1->read(), m_keylatch) ? CLEAR_LINE : ASSERT_LINE;
}


//-------------------------------------------------
//  vip_ef4_r - EF4 read
//-------------------------------------------------

int vp585_device::vip_ef4_r()
{
	return BIT(m_j2->read(), m_keylatch) ? CLEAR_LINE : ASSERT_LINE;
}