Devices And I/O Ports - IBM Aptiva Hardware Maintenance Manual

hard disk with a capacity of more than 504MB. This is made possible through
the Logical block address (LBA) mode translation. You may be required to set
this parameter to Disabled if you use other operating systems.
To prevent data loss, set this parameter to Auto if you are using a hard disk
with more than 504MB capacity that was previously configured through the
LBA mode. If you use a hard disk configured through the user-specific
cylinder-head-sector (CHS) mode, set this parameter to Disabled.
Hard Disk 32-bit Access
Setting this parameter to Enabled improves system performance by allowing
the use of the 32-bit hard disk access. This enhanced IDE feature only works
under DOS, Windows 3.x, Windows 95, and Novell NetWare. If your software
does not support this function, set this parameter to Disabled. The default
setting is Enabled.
CD-ROM Drive DMA Mode
This parameter allows you enable or disable the CD-ROM drive DMA mode.
The default setting is Disabled.

Devices and I/O Ports

From the Setup main menu, select the Devices and I/O Ports option to view or
change port configuration settings. The Devices and I/O Ports menu appears.
This menu lets you configure serial and parallel ports.
Also included in this menu are items for enabling or disabling the onboard
controller chipsets.
Onboard Communication Ports
Serial Port
Your computer comes with a 9-pin serial port. This parameter displays the
current address for serial port. The default setting Base Address is 2F8. The
default IRQ is 3.
If you install a modem or a serial port adapter card, use this parameter to
make any changes to the serial port address which may be needed to avoid
conflicts with additional hardware. If you change the serial port address, you
might also need to make changes in the software that uses the serial port. For
instructions on changing your software, see the user's guide or online
documentation that came with the software.
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