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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/***************************************************************************
Univac Terminals
The terminals are models UTS20, UTS30, UTS40, UTS50 and SVT1120,
however only the UTS20 is dumped (program roms only).
25/05/2009 Skeleton driver
The terminal has 2 screens selectable by the operator with the Fn + 1-2
buttons. Thus the user can have two sessions open at once, to different
mainframes or applications.
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
class univac_state : public driver_device
{
public:
univac_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu")
{ }
required_device<cpu_device> m_maincpu;
DECLARE_READ8_MEMBER( uts20_vram_r );
DECLARE_WRITE8_MEMBER( uts20_vram_w );
DECLARE_WRITE8_MEMBER( uts20_43_w );
const UINT8 *m_p_chargen;
bool m_screen_num;
UINT8 m_framecnt;
virtual void machine_reset();
virtual void video_start();
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
};
WRITE8_MEMBER( univac_state::uts20_43_w )
{
m_screen_num = data & 1;
}
READ8_MEMBER( univac_state::uts20_vram_r )
{
UINT8 *RAM = memregion("maincpu")->base();
return RAM[offset | ((m_screen_num) ? 0xe000 : 0xc000)];
}
WRITE8_MEMBER( univac_state::uts20_vram_w )
{
UINT8 *RAM = memregion("maincpu")->base();
RAM[offset | ((m_screen_num) ? 0xe000 : 0xc000)] = data;
}
static ADDRESS_MAP_START(uts20_mem, AS_PROGRAM, 8, univac_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE( 0x0000, 0x4fff ) AM_ROM
AM_RANGE( 0x5000, 0x7fff ) AM_RAM AM_REGION("maincpu", 0x5000)
AM_RANGE( 0x8000, 0x9fff ) AM_READWRITE(uts20_vram_r,uts20_vram_w)
AM_RANGE( 0xa000, 0xffff ) AM_RAM AM_REGION("maincpu", 0xa000)
ADDRESS_MAP_END
static ADDRESS_MAP_START( uts20_io, AS_IO, 8, univac_state)
ADDRESS_MAP_GLOBAL_MASK(0xff)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE( 0x43, 0x43 ) AM_WRITE(uts20_43_w)
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( uts20 )
INPUT_PORTS_END
void univac_state::machine_reset()
{
m_screen_num = 0;
}
void univac_state::video_start()
{
m_p_chargen = memregion("chargen")->base();
}
UINT32 univac_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
UINT8 y,ra,chr,gfx;
UINT16 sy=0,ma=0,x;
UINT8 *videoram = memregion("maincpu")->base()+((m_screen_num) ? 0xe000 : 0xc000);
m_framecnt++;
for (y = 0; y < 25; y++)
{
for (ra = 0; ra < 10; ra++)
{
UINT16 *p = &bitmap.pix16(sy++);
for (x = ma; x < ma + 80; x++)
{
gfx = 0;
if (ra < 9)
{
chr = videoram[x];
/* Take care of flashing characters */
if ((chr & 0x80) && (m_framecnt & 8))
chr = 0x20;
chr &= 0x7f;
gfx = m_p_chargen[(chr<<4) | ra ];
}
/* Display a scanline of a character */
*p++ = BIT(gfx, 7);
*p++ = BIT(gfx, 6);
*p++ = BIT(gfx, 5);
*p++ = BIT(gfx, 4);
*p++ = BIT(gfx, 3);
*p++ = BIT(gfx, 2);
*p++ = BIT(gfx, 1);
*p++ = BIT(gfx, 0);
}
}
ma+=80;
}
return 0;
}
static MACHINE_CONFIG_START( uts20, univac_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
MCFG_CPU_PROGRAM_MAP(uts20_mem)
MCFG_CPU_IO_MAP(uts20_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_UPDATE_DRIVER(univac_state, screen_update)
MCFG_SCREEN_SIZE(640, 250)
MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 249)
MCFG_PALETTE_LENGTH(2)
MCFG_PALETTE_INIT(black_and_white)
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( uts20 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "uts20a.rom", 0x0000, 0x1000, CRC(1a7b4b4e) SHA1(c3732e25b4b7c7a80172e3fe55c77b923cf511eb) )
ROM_LOAD( "uts20b.rom", 0x1000, 0x1000, CRC(7f8de87b) SHA1(a85f404ad9d560df831cc3e651a4b45e4ed30130) )
ROM_LOAD( "uts20c.rom", 0x2000, 0x1000, CRC(4e334705) SHA1(ff1a730551b42f29d20af8ecc4495fd30567d35b) )
ROM_LOAD( "uts20d.rom", 0x3000, 0x1000, CRC(76757cf7) SHA1(b0509d9a35366b21955f83ec3685163844c4dbf1) )
ROM_LOAD( "uts20e.rom", 0x4000, 0x1000, CRC(0dfc8062) SHA1(cd681020bfb4829d4cebaf1b5bf618e67b55bda3) )
/* character generator not dumped, using the one from 'c10' for now */
ROM_REGION( 0x2000, "chargen", 0 )
ROM_LOAD("c10_char.bin", 0x0000, 0x2000, BAD_DUMP CRC(cb530b6f) SHA1(95590bbb433db9c4317f535723b29516b9b9fcbf) )
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 198?, uts20, 0, 0, uts20, uts20, driver_device, 0, "Sperry Univac", "UTS-20", GAME_NOT_WORKING | GAME_NO_SOUND)
|