Allen-Bradley 1747-OC Series, User Manual

Page: 43 / 126

1747-UM001A-US-P - March 2000
Modifying BIOS Settings 3-13
IDE Geometry Most of the time the open controller can automatically determine the settings on a hard
drive. Use this setting to tell the open controller to automatically configure the installed
drives you specified in the Drive Assignments field.
Default:
3=AUTOCONFIG, LBA Use this selection for drives greater than
512 Mbytes
You have these additional selections:
Not Installed
1=User Type
Use this selection to manually enter the drive size
2=AUTOCONFIG, PHYSICAL
Use this only if the drive you are using requires
this setting
4=AUTOCONFIG, CHS
Use this selection for drives smaller than
512 Mbytes (the CompactFlash falls into this
category)
Boot Order This is the order the BIOS uses to find a bootable drive.
Default for Boot 1st and Boot 2nd:
(None)
You can choose to boot first from Drive A: or Drive C:
Typically, set the order to:
Boot 1st: >Drive A:
Boot 2nd: >Drive C:
This allows the open controller to boot from the C: drive first unless it detects a bootable
floppy in drive A:. (The bootable device, other than a bootable floppy, must be configured
to drive C:)
Typematic Delay Default:
250 ms
Sets the delay before a key begins repeating, if it is held down
Typematic Rate Default:
30 cbs
Sets number of characters per second displayed, if a key is held down
Show “Hit Del” Default:
Enabled
Sets whether you see the “Hit <Del> if you want to run SETUP”
prompt at system boot up
Config Box Default:
Enabled
Sets whether the current BIOS settings are displayed at
system boot up
F1 Error Wait Default:
Enabled
Sets how the system responds to an error on boot up
Test Above 1 MB Default:
Enabled
Sets whether the system tests the full memory range at boot up
Memory This shows system memory (SDRAM) status. Standard open controller configuration is:
640 KB Base Memory
63 MB Extended Memory
Basic CMOS Setup (default BIOS settings for the 1747-OCF)
This field: Description:
Allen-Bradley HMIs