Ampro Corporation COM 830 User Manual
Page 74

Chapter 4
BIOS Setup Description
68
Reference Manual
COM 830
Primary/Secondary IDE Master/Slave Submenu
Feature
Options
Description
Device
Hard Disk
ATAPI CDROM
Displays the type of drive detected. The 'grayed-out' items 
below are the IDE disk drive parameters taken from the 
firmware of the IDE disk.
Vendor
no option
Manufacturer of the device.
Size
no option
Total size of the device.
LBA Mode
supported
not supported
Shows whether the device supports Logical Block 
Addressing.
Block Mode
number of sectors
Block mode boosts IDE performance by increasing the 
amount of data transfered. Only 512 byte of data can be 
transfered 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 controller. 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 Technology protocol 
used by IDE drives of some manufacturers to predict drive 
failures.
Type
Not 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.
Block
(Multi-Sector 
Transfer)
Disabled
Auto
Set to AUTO to let the BIOS auto detect device support for 
multi sector transfer. The data transfer to and from the device 
will occur multiple (the number of sectors, see above) sectors 
at a time.
Set to Disabled to prevent the BIOS from using block mode. 
The data transfer to and from the device will occur one sector 
at a time.
PIO Mode
Auto
0, 1, 2, 3, 4
Set to AUTO to let the BIOS auto detect the supported PIO 
mode.
