Vax 613 0S Instruction Manual Page 251

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Looping on error is available on loadable diagnostics only.
DIAG_QUICK
Displays the current state of quick-mode operation. If the value is OFF,
normal operation of the testing is performed. If the value is ON, fast boot is
selected and not all TURBOchannel diagnostics may be executed.
ENABLE_AUDIT
Indicates if the boot audit-trail message generation is enabled.
ERRORS
Displays the errors that occurred on the system the last time the self-test
or system test was executed. Example 12 shows a sample SHOW ERROR
command.
Example 12 Sample Show Error Command
>>> show error
?? 576 SCSI 0x005c
T-ERR-SCSI B - snskey = 2 extfru = 0
ETHERNET
Displays the hardware Ethernet address. The Ethernet address ROM is
validated and is displayed as ID YY-YY-YY-YY-YY-YY where YY is a valid
two digit hexadecimal number. If the Ethernet address ROM is invalid then
ID XX-XX-XX-XX-XX-XX is displayed to indicate that the Ethernet address
ROM is not valid. The command also displays the current Ethernet selection,
10BaseT or Thickwire.
FAST_SCSI_A/B
The FAST_SCSI_A and FAST_SCSI_B environment variables initialize the
SCSI controllers. The variable FAST_SCSI_A is for bus A devices and FAST_
SCSI_B is for bus B devices. When the fast SCSI devices are connected
and FAST_SCSI_A/B is set to on, the SCSI firmware will operate in fast
SCSI mode. If both slow and fast SCSI devices are connected to the same
bus and the FAST_SCSI_A/B environment variable is on, the firmware will
differentiate between devices.
Note that the recommended maximum bus length is 4 meters for slow SCSI
devices and 3 meters for fast SCSI devices. When these limits are exceeded,
the SCSI bus is likely to have errors. If your total bus length, including
internal and external cables, is greater than 3 meters, you must set the
FAST_SCSI_A/B environment variable for that bus to off.
The accepted values are:
ON Operate in slow and fast SCSI modes, device dependent.
OFF Operate in slow SCSI mode.
The default settings for FAST_SCSI_A and FAST_SCSI_B environment
variables are off. Therefore, the SCSI controllers will be initialized to operate
in slow SCSI mode.
Console 16–27
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