1.2.6 Parallel Port
The parallel port allows the attachment of devices that accept eight bits
of parallel data at standard transistor-transistor-logic (TTL) levels.
The port has a 25-pin D-shell connector and is designed primarily for
printers. However, the port can be used as an input/output port for any
device or application that matches the input/output capabilities of the
port. When adapters with additional parallel ports are installed, the
system can support these devices, each addressed separately as PARALLEL 1,
PARALLEL 2, PARALLEL 3, or PARALLEL 4.
Note: Conflicts occur when two or more devices have the same address.
Select the Set configuration option from the system programs stored
on the hard disk drive. Select View configuration to verify that
no lines have the same address.
IBM PS/2 Model 90 XP 486 HMR
Parallel Port
¦ Copyright IBM Corp. 1990, 1991
1.2.6 - 1