summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/unistar.cpp
blob: 7955e64c74ffd5e85b0dbe4a04c9c34b4f79580b (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
// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic
/***************************************************************************

        Callan Unistar Terminal

        2009-12-09 Skeleton driver.

        Chips used: i8275, AM9513, i8085, i8237, i8255, 2x 2651. XTAL 20MHz

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

#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "machine/am9513.h"
#include "machine/i8255.h"
#include "emupal.h"
#include "screen.h"


class unistar_state : public driver_device
{
public:
	unistar_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, "maincpu")
		, m_p_chargen(*this, "chargen")
	{ }

	DECLARE_PALETTE_INIT(unistar);
	uint32_t screen_update_unistar(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);

	void unistar(machine_config &config);
	void unistar_io(address_map &map);
	void unistar_mem(address_map &map);
private:
	virtual void machine_reset() override;
	required_device<cpu_device> m_maincpu;
	required_region_ptr<u8> m_p_chargen;
};


void unistar_state::unistar_mem(address_map &map)
{
	map.unmap_value_high();
	map(0x0000, 0x2fff).rom();
	map(0x8000, 0x8fff).ram();
}

void unistar_state::unistar_io(address_map &map)
{
	//ADDRESS_MAP_UNMAP_HIGH
	map.global_mask(0xff);
	map(0x8c, 0x8d).rw("stc", FUNC(am9513_device::read8), FUNC(am9513_device::write8));
	map(0x94, 0x97).rw("ppi", FUNC(i8255_device::read), FUNC(i8255_device::write));
	// ports used: 00,02,03(W),08(RW),09,0A,0B,0D,0F(W),80,81(R),82,83(W),84(R),8C,8D(W),94(R),97,98(W),99(RW)
	// if nonzero returned from port 94, it goes into test mode.
}

/* Input ports */
static INPUT_PORTS_START( unistar )
INPUT_PORTS_END


void unistar_state::machine_reset()
{
}

PALETTE_INIT_MEMBER( unistar_state, unistar )
{
	palette.set_pen_color(0, 0, 0, 0 ); /* Black */
	palette.set_pen_color(1, 0, 255, 0 );   /* Full */
	palette.set_pen_color(2, 0, 128, 0 );   /* Dimmed */
}

uint32_t unistar_state::screen_update_unistar(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
	return 0;
}

/* F4 Character Displayer */
static const gfx_layout unistar_charlayout =
{
	8, 16,                  /* 8 x 16 characters */
	128,                    /* 128 characters */
	1,                  /* 1 bits per pixel */
	{ 0 },                  /* no bitplanes */
	/* x offsets */
	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	/* y offsets */
	{  0*8,  1*8,  2*8,  3*8,  4*8,  5*8,  6*8,  7*8, 8*8,  9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	8*16                    /* every char takes 16 bytes */
};

static GFXDECODE_START( gfx_unistar )
	GFXDECODE_ENTRY( "chargen", 0x0000, unistar_charlayout, 0, 1 )
GFXDECODE_END

MACHINE_CONFIG_START(unistar_state::unistar)
	/* basic machine hardware */
	MCFG_DEVICE_ADD("maincpu",I8085A, XTAL(2'000'000))
	MCFG_DEVICE_PROGRAM_MAP(unistar_mem)
	MCFG_DEVICE_IO_MAP(unistar_io)

	MCFG_DEVICE_ADD("stc", AM9513, XTAL(8'000'000))
	MCFG_AM9513_FOUT_CALLBACK(WRITELINE("stc", am9513_device, source1_w))

	MCFG_DEVICE_ADD("ppi", I8255A, 0)

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(50)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
	MCFG_SCREEN_SIZE(640, 480)
	MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
	MCFG_SCREEN_UPDATE_DRIVER(unistar_state, screen_update_unistar)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_unistar)
	MCFG_PALETTE_ADD("palette", 3)
	MCFG_PALETTE_INIT_OWNER(unistar_state, unistar)
MACHINE_CONFIG_END

/* ROM definition */
ROM_START( unistar )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
	ROM_LOAD( "280010c.u48", 0x0000, 0x1000, CRC(613ef521) SHA1(a77459e91617d2882778ab2dada74fcb5f44e949))
	ROM_LOAD( "280011c.u49", 0x1000, 0x1000, CRC(6cc5e704) SHA1(fb93645f51d5ad0635cbc8a9174c61f96799313d))
	ROM_LOAD( "280012c.u50", 0x2000, 0x1000, CRC(0b9ca5a5) SHA1(20bf4aeacda14ff7a3cf988c7c0bff6ec60406c7))

	ROM_REGION( 0x0800, "chargen", ROMREGION_ERASEFF )
	ROM_LOAD( "280014a.u1",  0x0000, 0x0800, CRC(a9e1b5b2) SHA1(6f5b597ee1417f1108ac5957b005a927acb5314a))
ROM_END

/* Driver */

//    YEAR  NAME     PARENT  COMPAT  MACHINE  INPUT    CLASS          INIT        COMPANY                FULLNAME                FLAGS
COMP( 198?, unistar, 0,      0,      unistar, unistar, unistar_state, empty_init, "Callan Data Systems", "Unistar 200 Terminal", MACHINE_IS_SKELETON )