IBM Aptiva Handbook page 69

6HULDO 3RUW 6HWXS
Use these settings to define the I/O port address and
interupt-request number to be used by the serial port.
3DUDOOHO 3RUW 6HWXS
Use these settings to define the I/O port address and
interupt-request number to be used by the parallel port.
These settings also control the parallel port mode (EPP,
ECP, ECP/EPP, or SPP, and the DMA setting for ECP, if
used.
86% 6HWXS
Use the settings for in this menu item to enable or disable
the USB (Universal Serial Bus) functions.
USB Controller
Select enabled if you will be using Universal Serial Bus
(USB) devices.
USB Keyboard Support
Select enabled to use a USB keyboard. The USB Controller
must also be set to enabled. Select disabled to use a
keyboard that connects to the standard keyboard connector.
,'( GULYHV VHWXS
PIO (Programmed Input/Output)
Each IDE drive controller can support up to two separate
drives. IDE drives have a master/slave relationship which
are determined by the cabling configuration used to attach
them to the controller. Your system supports two IDE
controllers, a primary and a secondary, so you have the
ability to install up to four separate IDE drives.
PIO means Programmed Input/Output. Rather than have the
BIOS issue a series of commands to control a transfer to or
from the disk drive, PIO allows the BIOS to tell the controller
what it wants and then lets the controller and the processor
perform the complete task by themselves. PIO provides
increased efficiency.
Your system suports five modes, numbered from 0 to 4,
which primarily differ in timing. When Auto (default) is
selected, the BIOS selects the best available mode for the
following four setup items:
W IDE Primary Master PIO
W IDE Primary Slave PIO
W IDE Secondary Master PIO
W IDE Secondary Slave PIO
Setup parameters 6-11