IBM Aptiva Hardware Maintenance Manual page 41

Parallel Port
Your computer comes with one parallel port. This parameter shows the default
Enabled to activate the parallel port. The default base address is 378h. The
default IRQ is 7.
If you install an adapter card with a parallel port, 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 the software
that uses the parallel port. For instructions on changing your software, see the
user's guide or online information that came with the software.
Operation mode As long as the parallel port setting is not disabled, this item
allows you to choose an operation mode for the parallel port. You can select
either the Standard mode or one of the extended modes (Bidirectional, EPP,
or ECP) for a parallel port operation mode. The extended modes increase the
efficiency of your parallel port; however, these modes use recent technology
and are only supported by newer hardware (such as some printer models).
The available modes are:
−
Standard. This mode allows for one-way operation at a normal
speed, and is the default setting.
−
Bidirectional. This mode allows for a two-way operation at a
normal speed.
−
EPP. This mode allows for a bidirectional parallel port operation at
a maximum speed.
−
ECP. This mode allows the parallel port to operate in a
bidirectional mode and at a speed higher than the maximum data
transfer rate.
NOTE: 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 user's guide or online documentation that came
with the adapter card.
ECP DMA Channel This item becomes active only if you select ECP as the
operation mode. It allows you to select DMA channel 1 or DMA channel 3
depending on the available system resource.
Onboard Floppy Disk Controller
This parameter allows you to enable or disable to onboard floppy disk
controller chipset. When set to Enabled, the controller enables the diskette
drive on your computer. When set to Disabled, the controller deactivates the
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