Parallel Port; Parallel Port Mode - IBM Aptiva Handbook

address and an interrupt so they can be assigned to
other devices.

Parallel port

This option displays the current address for the parallel
port on your system board. Your computer comes with
one parallel port.
If you install an adapter card with a parallel port, an
error message will notify you if you have an address
conflict between the parallel ports. Use this menu to
make sure that each parallel port has a different address.
If you change parallel port addresses in this menu, you
might also need to make changes in all software that
uses the parallel port. For instructions on changing your
software, see the documentation or online information
that came with the software.

Parallel port mode

As long as the Parallel Port setting is not Disabled, this
option lets you choose an operational mode for the
parallel port.
You can choose either the Compatible mode or one of
the extended modes (ECP, EPP, or PS/2 Bidirectional) for
a parallel port. The parallel port extended modes will
increase the efficiency of your parallel port; however, the
extended modes use recent technology and are only
supported by newer hardware, such as an Iomega Zip
drive.
38 Chapter 4: Viewing and changing Aptiva configuration
The available extended modes are:
PS/2 Bidirectional
This mode is used for data transfer to other PC
systems and supported devices.
ECP
The Extended Capabilities Port mode (ECP)
provides higher speed data transfers than the
Compatible mode. It is used for high-speed
printers and other devices.
ECP and EPP 1.7
This mode combines the capabilities of the
Extended Capabilities Port (ECP) and Enhanced
Parallel Port (EPP) modes. This mode is not
compatible with the ECP and EPP 1.9 mode.
ECP and EPP 1.9
This mode combines the capabilities of the
Extended Capabilities Port (ECP) and Enhanced
Parallel Port (EPP) modes. This mode is not
compatible with the ECP and EPP 1.7 mode.
If you change the mode of a parallel port on an adapter
card, you might need to make changes to the port's
adapter card and its software. See the documentation or
online information that came with the adapter card.