SBC-GX1 Technical Manual General Software Embedded BIOS 2000
Field Explanation
IDE drive geometry
If an IDE device is assigned a drive letter in the ‘Drive Assignment
Order’ column, then the IDE drives must be configured in the ‘ATA
DRV Assignment’ column.
• IDE 0 - IDE Primary Master Device (on-board IDE).
• IDE 1 - IDE Primary Slave Device (on-board IDE).
• IDE 2 - IDE Secondary Master Device (CompactFlash).
• IDE 3 - IDE Secondary Slave Device (not used).
To use the primary IDE drive on the SBC-GX1, configure IDE 0 in
the ATA DRV Assignment section, map IDE 0 to drive C: in the
Drive assignment order section, and set the required Boot order.
The IDE devices can be configured to be in five different modes:
• ‘USER’ lets you manually select the number of cylinders,
heads and sectors associated with the IDE device.
• ‘AUTOCONFIG PHYSICAL’ auto-detects the drive geometry
at POST. No translation is performed, so the size of the drive
is limited to a maximum of 512MB.
• ‘AUTOCONFIG LBA’ also auto-detects the drive geometry at
POST. The geometry is translated using the standard LBA
convention. This supports drive sizes up to 16GB.
• ‘AUTOCONFIG PHOENIX’ setting is the same as the
‘AUTOCONFIG LBA’, except that the translation is done
using the Phoenix Software CHS convention.
• ‘IDE CD-ROM’ provides support for ATA IDE CD-ROM drives.
Typematic Delay
Specify the time, when holding a key, between the first and
second character being displayed. The options available are: 250,
500, 750 and 1,000 msec.
Typematic Rate
Select the rate at which characters are generated, i.e. displayed
on screen, when a key is pressed and held down. The options
available are: 6, 8, 10, 12, 15, 20, 24 or 30 characters per second.
Seek at Boot
During POST the BIOS can be configured to cause a seek of the
physical drives. This can be used to force a floppy disk, hard drive
or CD-ROM to ‘spin up’. There are four settings available:
• None: No seek operation is performed.
• Both: Seeks both Floppy and IDE drives.
• IDE: Seeks any devices connected to the IDE interface.
• Floppy: Seeks floppy disk drive only. This is the default
selection.
continued…
© 2004 Arcom Issue D 47
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