Parallel Port Connector; Table C-5 Parallel Port Pinouts - Digital Equipment AlphaStation 500 Series User Information

Technical Specifications

Parallel Port Connector

The parallel port connector provides an interface to a printer or other parallel devices.
Table C-5 lists pin assignments. An asterisk (*) after a signal name indicates an active low
signal.

Table C-5 Parallel Port Pinouts

DB25 Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 to 25
C-4 AlphaStation 500 Series User Information
Signal Function
STB-R* Strobe
PRTD0 Printer data bit 0
PRTD1 Printer data bit 1
PRTD2 Printer data bit 2
PRTD3 Printer data bit 3
PRTD4 Printer data bit 4
PRTD5 Printer data bit 5
PRTD6 Printer data bit 6
PRTD7 Printer data bit 7
ACK* Acknowledge
BUSY Busy
PE Paper end
SLCT Select
AUTOFDXT* Autofeed
ERR* Error
INIT* Initialize printer
SLCTIN* Select input
GND Ground