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MOPS/586 BIOS-Description
• WPcom (starting write precompensation cylinder)
• Sec (number of sectors)
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
Precompensation
The size of a sector gets progressively smaller as 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 where write
precompensation begins.
Landing Zone This number is the cylinder location where the heads will 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 more sectors per track.
Size The formatted capacity of the drive is (Number of heads) x (Number of cylinders) x (Number of sectors per track) x
(512 bytes per sector)
Configuring IDE Drives: If the hard disk drive to be configured is an IDE drive, select the option
AUTO and press <ENTER> to detect all drive parameters automatically.
AMIBIOS automatically detects the IDE drive parameters (including ATAPI CD-ROM drives) and
displays them. You can set the parameters manually if you are absolutely certain that you know the
correct IDE drive parameters.
Set LBA Mode to On to enable support for IDE drives with capacities greater than 528 MB.
Set Blk Mode to On to support IDE drives that use Block Mode.
Choose PIO Mode to select the IDE Programmed I/O mode. PIO programming also works with ATAPI
CD-ROM drives. The settings are Auto, 0, 1, 2, 3, 4, or 5. Use Auto to allow AMIBIOS to automatically
find the PIO mode that the IDE drive being configured uses. If you select 0-5 you must make
absolutely certain that you are selecting the PIO mode supported by the IDE drive being configured.
Set 32Bit Mode to On to support IDE drives that permit 32-bit accesses.
Configuring a CD-ROM Drive: Select the appropriate drive (Pri Master, Pri Slave, Sec Master, or Sec
Slave). Choose the Type parameter and select CDROM. You can boot the computer from a CD-ROM
drive. You can also choose Auto and let AMIBIOS automatically set the correct drive parameters.
Hard Disk Drive Types
Please look for Setup-Screen.
Boot Sector Virus Protection
If enabled, any write access to the hard disks boot sector will be trapped and reported on the screen.
The user himself decides if the access accomplishes. The Optimal and Fail Safe default settings are
Disabled.
Tri-M Systems Inc., 6-1301 Ketch Court, Coquitlam, B.C., V3K 6X7, Canada
Phone: (604) 527-1100, (800) 665-5600 Fax: (604) 527-1110
Email: info@Tri-M.com Web: www.Tri-M.com