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
|
/***************************************************************************
DEC VT220
30/06/2009 Skeleton driver.
****************************************************************************/
#include "emu.h"
#include "cpu/mcs51/mcs51.h"
#include "machine/ram.h"
class vt220_state : public driver_device
{
public:
vt220_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) { }
virtual void machine_reset();
virtual void video_start();
UINT32 screen_update_vt220(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
};
static ADDRESS_MAP_START(vt220_mem, AS_PROGRAM, 8, vt220_state)
AM_RANGE(0x0000, 0x7fff) AM_ROM
ADDRESS_MAP_END
static ADDRESS_MAP_START(vt220_io, AS_IO, 8, vt220_state)
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( vt220 )
INPUT_PORTS_END
void vt220_state::machine_reset()
{
memset(machine().device<ram_device>(RAM_TAG)->pointer(),0,16*1024);
}
void vt220_state::video_start()
{
}
UINT32 vt220_state::screen_update_vt220(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
return 0;
}
static MACHINE_CONFIG_START( vt220, vt220_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", I8051, XTAL_16MHz)
MCFG_CPU_PROGRAM_MAP(vt220_mem)
MCFG_CPU_IO_MAP(vt220_io)
/* 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(vt220_state, screen_update_vt220)
MCFG_PALETTE_LENGTH(2)
MCFG_PALETTE_INIT(black_and_white)
/* internal ram */
MCFG_RAM_ADD(RAM_TAG)
MCFG_RAM_DEFAULT_SIZE("16K")
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( vt220 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "23-178e6.bin", 0x0000, 0x8000, CRC(cce5088c) SHA1(4638304729d1213658a96bb22c5211322b74d8fc))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1983, vt220, 0, 0, vt220, vt220, driver_device, 0, "Digital Equipment Corporation", "VT220", GAME_NOT_WORKING | GAME_NO_SOUND)
|