Specifications

BIOS Configuration
EPC-100 Hardware Reference 3-6
Type
“None” is selected if there is no IDE hard disk drive for this adapter. In the case for
which there is an IDE disk but the “Autotype” feature cannot be employed, then the
“User” type is selected and the correct drive values for cylinders, heads,
sectors/track, and write precompensation for the drive are entered. Selecting “Auto”
for this option causes the System BIOS to automatically autotype the hard disk every
time POST is executed. The default is “Auto”.
Multi-Sector Transfers
This option allows the user to configure the System BIOS to read ahead by the
specified number of sectors whenever a disk access is performed. This has the effect
of reading more data at once to reduce the absolute number of discrete disk reads
performed by the operating system, which may increase system performance. The
possible selections are “Disabled”, “2 sectors”, “4 sectors”, “8 sectors”, or “16
sectors” . Note that autotyping may change this value if the hard disk reports that it
supports block accesses. The default is “Disabled”.
LBA Mode Control
When enabled, this option allows the System BIOS to reference hard disk data as
logical blocks instead of using the traditional Cylinders/Heads/Sectors (CHS)
method. This option can only be used if both the hard disk being configured and the
operating system support Logical Block Addressing (LBA). If disabled, then CHS
mode is used. Note that autotyping may change this value if the hard disk reports
that it supports LBA. The default is “Disabled”.
32-bit I/O
This option allows the System BIOS to access the hard disk controller with 32-bit I/O
accesses, increasing system performance. This selection is not affected by
autotyping. If the PCI IDE controller in the T2 chipset is being used, then this option
should be set to “Enabled” to maximize system performance. The default is
“Enabled”.