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9-8 • Quick Reference AlphaServer 1000A Owner's Guide
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 Function
1 STB-R* Strobe
2 PRTD0 Printer data bit 0
3 PRTD1 Printer data bit 1
4 PRTD2 Printer data bit 2
5 PRTD3 Printer data bit 3
6 PRTD4 Printer data bit 4
7 PRTD5 Printer data bit 5
8 PRTD6 Printer data bit 6
9 PRTD7 Printer data bit 7
10 ACK* Acknowledge
11 BUSY Busy
12 PE Paper end
13 SLCT Select
14 AUTOFDXT* Autofeed
15 ERR* Error
16 INIT* Initialize printer
17 SLCTIN* Select input
18 to 25 CHAS Chassis ground
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