ICOP Technology ICOP-602X User Manual page 44

<I> Auto-detection
BIOS setup will display all possible modes supported by the
HDD including NORMAL, LBA & LARGE. If HDD does not
support LBA modes, no 'LBA' option will be shown. Users
can select a mode that is appropriate for them.
<II> Standard CMOS Setup
Drive C :User(516MB)
Drive D :None (203MB)
When HDD type is in 'user' type, the "MODE" option will be
open for user to select the HDD mode.
2. HDD Modes
The Award BIOS supports 3 HDD modes: NORMAL, LBA & LARGE.
n NORMAL mode
A generic access mode wherein neither the BIOS nor the IDE
controller will make any transformations during accessing.
The maximum number of cylinders, head & sectors for NORMAL mode
are 1024, 16 & 63.
f user sets his HDD to NORMAL mode, the maximum accessible HDD
I
size will be 528MB even though its physical size may be greater than
that!
n LBA (Logical Block Addressing) mode
A new HDD accessing method to overcome the 528MB bottleneck.
The number of cylinders, heads & sectors shown in setup may not be
the number physically contained in the HDD.
During HDD accessing, the IDE controller will transform the logical
address described by sector, head & cylinder number into its own
physical address inside the HDD.
The maximum HDD size supported by LBA mode is 8.4GB which is
obtained by the following formula:
40 ICOP Embedded 386SX CPU ISA Half Size SBC User's Manual
CYLS Heads Precomp
1120 1 6 65535
684 1 6 65535
no. Cylinder
x no. Head
x no. Sector
x no. per sector
no. Cylinder
x no. Head
Landzone Sector
1119 5 9 NORMAL
685 3 8 ----------
( 1024)
( 16)
( 63)
( 512)
528 Megabytes
( 1024)
( 255)
Mode