Laptop User Manual
Configure and Environment Commands
A-4 MVME166 Single Board Computer Installation Guide
A
Auto Boot Default String [Y(NULL String)/(String)] You may specify a string 
(filename) which is passed on to 
the code being booted. 
Maximum length is 16 
characters. Default is the null 
string. 
ROM Boot Enable [Y/N] N ROMboot function is disabled.
ROM Boot at power-up only [Y/N] Y ROMboot is attempted at power 
up only. 
ROM Boot Enable search of VMEbus [Y/N] N VMEbus address space will not 
be accessed by ROMboot. 
ROM Boot Abort Delay 00 This is the time in seconds that 
the ROMboot sequence will 
delay before starting the boot. 
The purpose for the delay is to 
allow you the option of stopping 
the boot by use of the Break key. 
The time value is from 0 through 
255 seconds.  
ROM Boot Direct Starting Address FF800000 First location tested when the 
Bug searches for a ROMboot 
Module. 
ROM Boot Direct Ending Address FFBFFFFC Last location tested when the 
Bug searches for a ROMboot 
Module. 
Network Auto Boot Enable [Y/N] N Network Auto Boot function is 
disabled. 
Network Auto Boot at power-up only [Y/N] Y Network Auto Boot is attempted 
at power up reset only. 
Network Auto Boot Controller LUN 00 LUN of a disk/tape controller 
module currently supported by 
the Bug. Default is $0. 
Network Auto Boot Device LUN 00 LUN of a disk/tape device 
currently supported by the Bug. 
Default is $0. 
Network Auto Boot Abort Delay 5 This is the time in seconds that 
the Network Boot sequence will 
delay before starting the boot. 
The purpose for the delay is to 
allow you the option of stopping 
the boot by use of the Break key. 
The time value is from 0 through 
255 seconds.  
Table A-1. ENV Command Parameters (Continued)
ENV Parameter and Options Default Meaning of Default










