Acer Altos 1100 Series - Manual (Page 58)

Altos 1100 Series User’s Guide 2-16
Hard Disk 32-bit Access
Enabling this parameter improves system performance by allowing the use of the
32-bit hard disk access. This enhanced IDE feature works only under DOS,
Windows 3.x, Windows 95/98, and Novell NetWare. If your software or hard
disk does not support this function, set this parameter to Disabled.
CD-ROM Drive DMA Mode
This parameter allows you to enable or disable the CD-ROM drive DMA mode.
Set this parameter to Enabled to enable the DMA mode for the CD-ROM drive.
This improves the system performance since it allows direct memory access to the
CD-ROM. To deactivate the function, set the parameter to Disabled.