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
|
// license:???
// copyright-holders:???
/***************************************************************************
Science of Cambridge MK-14
20/11/2009 Skeleton driver.
****************************************************************************/
#include "emu.h"
#include "cpu/scmp/scmp.h"
#include "machine/ins8154.h"
#include "mk14.lh"
class mk14_state : public driver_device
{
public:
mk14_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) ,
m_maincpu(*this, "maincpu") { }
DECLARE_READ8_MEMBER(keyboard_r);
DECLARE_WRITE8_MEMBER(display_w);
virtual void machine_reset();
required_device<cpu_device> m_maincpu;
};
/*
000-1FF 512 byte SCIOS ROM Decoded by 0xxx
200-3FF ROM Shadow / Expansion RAM
400-5FF ROM Shadow / Expansion RAM
600-7FF ROM Shadow / Expansion RAM
800-87F 128 bytes I/O chip RAM Decoded by 1xx0
880-8FF I/O Ports Decoded by 1xx0
900-9FF Keyboard & Display Decoded by 1x01
A00-AFF I/O Port & RAM Shadow
B00-BFF 256 bytes RAM (Extended) / VDU RAM Decoded by 1011
C00-CFF I/O Port & RAM Shadow
D00-DFF Keyboard & Display Shadow
E00-EFF I/O Port & RAM Shadow
F00-FFF 256 bytes RAM (Standard) / VDU RAM Decoded by 1111
*/
READ8_MEMBER( mk14_state::keyboard_r )
{
if (offset < 8)
{
char kbdrow[6];
sprintf(kbdrow,"X%X",offset);
return ioport(kbdrow)->read();
}
else
return 0xff;
}
WRITE8_MEMBER( mk14_state::display_w )
{
if (offset < 8 )
output_set_digit_value(offset, data);
else
{
//logerror("write %02x to %02x\n",data,offset);
}
}
static ADDRESS_MAP_START(mk14_mem, AS_PROGRAM, 8, mk14_state)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0x0fff)
AM_RANGE(0x000, 0x1ff) AM_ROM AM_MIRROR(0x600) // ROM
AM_RANGE(0x800, 0x87f) AM_RAM AM_MIRROR(0x600) // 128 I/O chip RAM
AM_RANGE(0x880, 0x8ff) AM_DEVREADWRITE("ic8", ins8154_device, ins8154_r, ins8154_w) AM_MIRROR(0x600) // I/O
AM_RANGE(0x900, 0x9ff) AM_READWRITE(keyboard_r, display_w) AM_MIRROR(0x400)
AM_RANGE(0xb00, 0xbff) AM_RAM // VDU RAM
AM_RANGE(0xf00, 0xfff) AM_RAM // Standard RAM
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( mk14 )
PORT_START("X0")
PORT_BIT(0x0F, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0)
PORT_START("X1")
PORT_BIT(0x0F, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1)
PORT_START("X2")
PORT_BIT(0x0F, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("GO") PORT_CODE(KEYCODE_F1)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2)
PORT_START("X3")
PORT_BIT(0x0F, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("MEM") PORT_CODE(KEYCODE_F2)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3)
PORT_START("X4")
PORT_BIT(0x0F, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("AB") PORT_CODE(KEYCODE_F3)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4)
PORT_START("X5")
PORT_BIT(0x0F, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5)
PORT_START("X6")
PORT_BIT(0x0F, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6)
PORT_START("X7")
PORT_BIT(0x0F, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("TERM") PORT_CODE(KEYCODE_F4)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7)
INPUT_PORTS_END
void mk14_state::machine_reset()
{
}
static MACHINE_CONFIG_START( mk14, mk14_state )
/* basic machine hardware */
// IC1 1SP-8A/600 (8060) SC/MP Microprocessor
MCFG_CPU_ADD("maincpu", INS8060, XTAL_4_433619MHz)
MCFG_CPU_PROGRAM_MAP(mk14_mem)
/* video hardware */
MCFG_DEFAULT_LAYOUT(layout_mk14)
/* devices */
MCFG_DEVICE_ADD("ic8", INS8154, 0)
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( mk14 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
// IC2,3 74S571 512 x 4 bit ROM
ROM_LOAD( "scios.bin", 0x0000, 0x0200, CRC(8b667daa) SHA1(802dc637ce5391a2a6627f76f919b12a869b56ef))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1977, mk14, 0, 0, mk14, mk14, driver_device, 0, "Science of Cambridge", "MK-14", GAME_NO_SOUND)
|