Parallel Port Connector - Compaq AlphaServer 1000A Owner's Manual

Parallel Port Connector

The parallel port provides an interface to a printer or other parallel devices. Table 9–2
lists pin assignments for the parallel port. An asterisk (*) after a signal name indicates an
active low signal.
Table 9–2: Parallel Port Pinouts
Pin Signal
1 STB-R*
2 PRTD0
3 PRTD1
4 PRTD2
5 PRTD3
6 PRTD4
7 PRTD5
8 PRTD6
9 PRTD7
10 ACK*
11 BUSY
12 PE
13 SLCT
14 AUTOFDXT*
15 ERR*
16 INIT*
17 SLCTIN*
18 to 25 CHAS
Function
Strobe
Printer data bit 0
Printer data bit 1
Printer data bit 2
Printer data bit 3
Printer data bit 4
Printer data bit 5
Printer data bit 6
Printer data bit 7
Acknowledge
Busy
Paper end
Select
Autofeed
Error
Initialize printer
Select input
Chassis ground
AlphaServer 1000A Rackmount Owner's Guide 9-7
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