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8580/8590 Vehicle-Mount Computer User Manual E-11
Appendix E: BIOS
IDE Configuration Sub-Menu
Block Mode
Number of
sectors
Block mode boosts IDE performance by
increasing the amount of data transferred. Only
512 bytes of data can be transferred per interrupt
if block mode is not used. Block mode allows
transfers of up to 64 KB per interrupt.
PIO Mode 0, 1, 2, 3, 4
IDE PIO mode programs timing cycles between
the IDE drive and the programmable IDE con-
troller. As the PIO mode increases, the cycle
time decreases.
Async DMA No option
This indicates the highest asynchronous DMA
mode that is supported.
Ultra DMA No option
This indicates the highest synchronous DMA
mode that is supported.
S.M.A.R.T. No option
Self-monitoring analysis and reporting technol-
ogy protocol used by IDE drives of some manu-
facturers to predict drive failures.
Type
No Installed
Auto
CD/DVD
ARMD
Sets the type of device that the BIOS attempts to
boot from after the POST has completed. Not
Installed prevents the BIOS from searching for
an IDE disk. Auto allows the BIOS to auto
detect the IDE disk drive type.
CD/DVD specifies that an IDE CD/DVD drive
is attached. The BIOS will not attempt to search
for other types of IDE disk drives.
ARMD specifies an ATAPI removable media
device. This includes, but is not limited to ZIP
and LS-120.
LBA/Large Mode
Disabled
Auto
Set to AUTO to let the BIOS auto detect LBA
mode control. Set to Disabled to prevent the
BIOS from using LBA mode.
Feature Options Description