22 SBC-455 User's Manual

Parallel port DRQ and DACK (JP11)

You can select the parallel port DRQ and DACK by setting JP11.
The following charts show the available options.
Parallel port DRQ and DACK selection (JP11)
DRQ1(default) DRQ3
DACK 1 (default) DACK3
Power supply connections (POWER CON)

Power supply connector

In single board computer (non-passive backplane) applications,
you will need to connect power directly to the SBC-455 board
using POWER CON. This connector is fully compatible with the
standard PC power supply connector. See the following table for
its pin assignments:
Power connector (POWER CON)
Pin Function
1 N.C.
2 +5 VDC
3 +12 VDC
4 -12 VDC
5 GND
6 GND