Compaq Smartstation 198-Pin External Options Connector Pin Assignments - Compaq LTE Elite Maintenance And Service Manual

Table A-7. Compaq SmartStation 198-Pin External Options Connector
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Pin Signal
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1 Printer Select
2 Printer Busy
3 Printer Data Bit 7
4 Printer Data Bit 5
5 Ground
6 Printer Data Bit 3
7 Printer Data Bit 1
8 Printer Strobe *
9 +5V from Main Exp. Base
10 Battery Voltage
11 Power Good Exp. Base
12 Standby
13 Mouse Data
14 Battery Voltage
15 CRT-Red Analog
16 CRT-Green Analog
17 CRT-Blue Analog
18 CRT Horizontal Sync
19 CRT Vertical Sync
20 Ground
21 Serial-Data Term Ready
22 Serial-Ring Indicator
23 Serial Transmit Data
24 Serial Clear-to-Send
25 Ground
26 Serial Receive Data
27 Serial Ready-to-Send
28 Serial Carrier Detect
29 Serial-Data Set Ready
30 Ground
31 DMA Acknowledge 2 *
32 DMA Acknowledge 1 *
33 DMA Acknowledge 0 *
34 +5V Fused (computer)
35 Printer Paper Out
36 Printer Acknowledge *
37 Printer Data Bit 6
38 Printer Data Bit 4
39 Ground
40 Printer Data Bit 2
41 Printer Data Bit 0
42 Keypad Data
43 Battery Voltage
44 Keyboard Clock
45 Keyboard Data
46 Mouse Clock
47 Battery Voltage
48 Ground-CRT
49 Ground-CRT
50 Ground-CRT
51 Ground-CRT
52 Ground-CRT
53 DMA Request 1
54 DMA Request 7
55 DMA Request 6
Pin Signal
100 +5V Fused (computer)
101 Printer Auto Line Feed *
102 Printer Error *
103 Ground
104 Printer Initialize *
105 Diskette Write Gate *
106 Diskette Read Data *
107 Ground
108 Power On *
109 Exp Device Connected *
110 I/O Error Check *
111 Ground
112 System Address Bit 4
113 System Address Bit 5
114 System Address Bit 6
115 Ground
116 System Address Bit 7
117 System Address Bit 8
118 System Address Bit 9
119 Ground
120 System Address Bit 10
121 System Address Bit 11
122 System Address Bit 12
123 System Address Bit 13
124 Ground
125 System Address Bit 14
126 System Address Bit 15
127 System Address Bit 16
128 Ground
129 System Address Bit 17
130 System Address Bit 18
131 System Address Bit 19
132 Ground
133 Printer Select In *
134 Diskette Boot
135 Diskette Low Den. Media *
136 Diskette Direction In *
137 Ground
138 Diskette Index *
139 Diskette Change *
140 Diskette Head Select
141 Ground
142 Reserved
143 No Wait States *
144 Bus Ready
145 Ground
146 I/O Read Control *
147 I/O Write Control *
148 ISA Bus Clock
149 Ground
150 Address Latch Enable
151 DMA Cycle Indicator
152 Unlatched Address Bit 17
153 Ground
154 Unlatched Address Bit 18