summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/machine/sapi1.c
blob: 12b04cac7f84e1c955c472cfd9854ba2810f98bd (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
/***************************************************************************

        SAPI-1 driver by Miodrag Milanovic

        09/09/2008 Preliminary driver.

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

#include "includes/sapi1.h"


/* Driver initialization */
DRIVER_INIT_MEMBER(sapi1_state,sapi1)
{
}

MACHINE_RESET_MEMBER(sapi1_state,sapi1)
{
	m_keyboard_mask = 0;
}

MACHINE_START_MEMBER(sapi1_state,sapi1)
{
}

READ8_MEMBER( sapi1_state::sapi1_keyboard_r )
{
	UINT8 key = 0xff;
	if (BIT(m_keyboard_mask, 0)) { key &= m_line0->read(); }
	if (BIT(m_keyboard_mask, 1)) { key &= m_line1->read(); }
	if (BIT(m_keyboard_mask, 2)) { key &= m_line2->read(); }
	if (BIT(m_keyboard_mask, 3)) { key &= m_line3->read(); }
	if (BIT(m_keyboard_mask, 4)) { key &= m_line4->read(); }
	return key;
}

WRITE8_MEMBER( sapi1_state::sapi1_keyboard_w )
{
	m_keyboard_mask = (data ^ 0xff ) & 0x1f;
}


MACHINE_RESET_MEMBER(sapi1_state,sapizps3)
{
	m_keyboard_mask = 0;
	m_bank1->set_entry(1);
}

DRIVER_INIT_MEMBER(sapi1_state,sapizps3)
{
	UINT8 *RAM = memregion("maincpu")->base();
	m_bank1->configure_entries(0, 2, &RAM[0x0000], 0xf800);
}