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Chapter 2 Installation 21
Parallel port (PRINTER)
Normally, the parallel port is used to connect the card to a printer.
The SBC-455 includes an on-board parallel port, accessed through
the PRINTER connector, a 26-pin flat-cable connector. The CPU
card comes with an adapter cable, which lets you use a traditional
DB-25 connector. The cable has a 26-pin connector on one end
and a DB-25 connector on the other, mounted on a retaining
bracket.
Installing the retaining bracket
The retaining bracket installs at an empty slot in your system's
chassis. It provides an external port that allows your parallel
peripheral to access to the card's parallel port connector.
1. Find an empty slot in your chassis.
2. Unscrew the plate that covers the end of the slot.
3. Screw in the bracket in place of the plate.
4. Next, attach the flat-cable connector to the PRINTER connec-
tor. Wire 1 of the cable is red or blue, and the other wires are
gray. Make sure that Wire 1 connects to Pin 1 of the PRINTER
connector. Pin 1 is on the right side of the PRINTER connec-
tor.
Pin assignments
PRINTER Connector
Pin Signal Pin Signal
1 Strobe 2 Data 0
3 Data 1 4 Data 2
5 Data 3 6 Data 4
7 Data 5 8 Data 6
9 Data 7 10 -Acknowledge
11 Busy 12 Paper empty
13 + Select 14 - Auto feed
15 - Error 16 - Init printer
17 - Select input 18~25 GND