Silicon Graphics CHALLENGE L, User Manual, Page: 90 / 164

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Chapter 4: Installing Optional Peripherals
Refer to the IRIX Advanced Site and Server Administration Guide for additional
information about configuring your printer.
The parallel printer port on the system I/O panel is a 25-pin, Centronics
compatible connector. Table 4-7 shows the pin assignments and signals as
they relate to a 36-pin Centronics connector.
Table 4-7 Centronics Compatible Parallel Port Pin Assignments
25-Pin Serial Port Pin
Assignment 36-Pin Centronics Pin
Assignments Signal
1 1 STB (Data Strobe)
2 2 DATA 0
3 3 DATA 1
4 4 DATA 2
5 5 DATA 3
6 6 DATA 4
7 7 DATA 5
8 8 DATA 6
9 9 DATA 7
10 10 DATA ACK
11 11 BUSY
12 12 PE (Paper Empty)
13 13 SLCT (Select)
14 N/A AUTOFD
15 32 ERROR
16 N/A INIT (Reset)
17 N/A SLCTIN
18 through 25 20 through 27 GND