summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/machine/pc1350.cpp
blob: 6559e08041e7d738fe669a8cebae4b54cffb3137 (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
// license:GPL-2.0+
// copyright-holders:Peter Trauner
#include "emu.h"
#include "cpu/sc61860/sc61860.h"

#include "includes/pocketc.h"
#include "includes/pc1350.h"
#include "machine/ram.h"



WRITE8_MEMBER(pc1350_state::pc1350_outa)
{
	m_outa=data;
}

WRITE8_MEMBER(pc1350_state::pc1350_outb)
{
	m_outb=data;
}

WRITE8_MEMBER(pc1350_state::pc1350_outc)
{
}

READ8_MEMBER(pc1350_state::pc1350_ina)
{
	int data = m_outa;
	int t = pc1350_keyboard_line_r(space,0);

	if (t & 0x01)
		data |= ioport("KEY0")->read();

	if (t & 0x02)
		data |= ioport("KEY1")->read();

	if (t & 0x04)
		data |= ioport("KEY2")->read();

	if (t & 0x08)
		data |= ioport("KEY3")->read();

	if (t & 0x10)
		data |= ioport("KEY4")->read();

	if (t & 0x20)
		data |= ioport("KEY5")->read();

	if (m_outa & 0x01)
		data |= ioport("KEY6")->read();

	if (m_outa & 0x02)
		data |= ioport("KEY7")->read();

	if (m_outa & 0x04)
	{
		data |= ioport("KEY8")->read();

		/* At Power Up we fake a 'CLS' pressure */
		if (m_power)
			data |= 0x08;
	}

	if (m_outa & 0x08)
		data |= ioport("KEY9")->read();

	if (m_outa & 0x10)
		data |= ioport("KEY10")->read();

	if (m_outa & 0xc0)
		data |= ioport("KEY11")->read();

	// missing lshift

	return data;
}

READ8_MEMBER(pc1350_state::pc1350_inb)
{
	return m_outb;
}

READ_LINE_MEMBER(pc1350_state::pc1350_brk)
{
	return (ioport("EXTRA")->read() & 0x01);
}

void pc1350_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
	switch (id)
	{
	case TIMER_POWER_UP:
		m_power=0;
		break;
	default:
		assert_always(FALSE, "Unknown id in pc1350_state::device_timer");
	}
}

void pc1350_state::machine_start()
{
	address_space &space = m_maincpu->space(AS_PROGRAM);

	m_power = 1;
	timer_set(attotime::from_seconds(1), TIMER_POWER_UP);

	space.install_readwrite_bank(0x6000, 0x6fff, "bank1");
	membank("bank1")->set_base(&m_ram->pointer()[0x0000]);

	if (m_ram->size() >= 0x3000)
	{
		space.install_readwrite_bank(0x4000, 0x5fff, "bank2");
		membank("bank2")->set_base(&m_ram->pointer()[0x1000]);
	}
	else
	{
		space.nop_readwrite(0x4000, 0x5fff);
	}

	if (m_ram->size() >= 0x5000)
	{
		space.install_readwrite_bank(0x2000, 0x3fff, "bank3");
		membank("bank3")->set_base(&m_ram->pointer()[0x3000]);
	}
	else
	{
		space.nop_readwrite(0x2000, 0x3fff);
	}

	UINT8 *ram = memregion("maincpu")->base() + 0x2000;
	UINT8 *cpu = m_maincpu->internal_ram();

	machine().device<nvram_device>("cpu_nvram")->set_base(cpu, 96);
	machine().device<nvram_device>("ram_nvram")->set_base(ram, 0x5000);
}