Weal Union TI-810+ User Manual - page 15
Page 15
TI-810+ Motherboard
Type
How to Configure
SCSI
Select Type. Select Not Installed the drive parameter screen. The SCSI
drivers provided by the SCSI manufacturer should allow you to config-
ure the SCSI drive.
IDE
Select Type. Select Auto to let AMIBIOS determine the parameters.
Click on OK when AMIBIOS displays the drive parameters. Select
LBA/Large Mode . Select On if the drive has a capacity greater than 540
MB. Select Block Mode . Select On to allow block mode data transfers.
Select 32-Bit Transfer. Select On to allow 32-bit data transfers. Select
the PIO Mode. It is best to select Auto to allow AMIBIOS to determine
the PIO mode. If you select a PIO mode that is not supported by the
IDE drive, the drive will not work properly. If you are absolutely cer-
tain that you know the drive’s PIO mode, select PIO mode 0-5, as
appropriate.
CD-ROM
Select Type. Select CDROM. Click on OK when AMIBIOS displays the
drive parameters.
Standard MFM
Select Type. You must know the drive parameters. Select the drive
type that exactly matches your drive ’s parameters.
Non-Standard
Select Type. If the drive parameters do not match the drive
MFM
parameters listed for drive types 1-46, select User and enter the correct
hard disk drive parameters.
Entering Drive Parameters
You can also enter the hard disk drive parameters. The drive parameters are
Parameter
Description
Type
The number for a drive with certain identification parameters.
Cylinders
The number of cylinders in the disk drive.
Heads
The number of heads.
Write
The actual physical size of a sector gets progressively smaller as
Precompensation the track diameter diminishes. Yet each sector must still hold 512 bytes.
Write precompensation circuitry on the hard disk compensates for the physical
difference in sector size by boosting the write current for sectors on inner
tracks. This parameter is the track number on the disk surface where
write precompensation begins.
Landing Zone
This number is the cylinder location where the heads normally park
when the system is shut down.
Sectors
The number of sectors per track. MFM drives have 17 sectors per
track. RLL drives have 26 sectors per track. ESDI drives have 34 sectors
per track. SCSI and IDE drives have even more sectors per track.
Capacity
The formatted capacity of the drive is the number of heads times the
number of cylinders times the number of sectors per track times 512
(bytes per sector).