Compaq AlphaServer ES40, Service Manual

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4-2 Compaq AlphaServer ES40 Service Guide
4.1 Diagnostic Command Summary
Diagnostic commands are used to test the system and help diagnose
failures. Table 4–1 gives a summary of the SRM diagnostic commands
and related commands. See Chapter 6 for a list of SRM environment
variables, and see Appendix A for a list of SRM commands most
commonly used for the ES40 system.
Table 4–1 Summary of Diagnostic and Related Commands
Command Function
buildfru
Initializes I
2
Cbus EEPROM data structures for the named
FRU.
cat el Displays the console event log. Same as more el, but scrolls
rapidly. The most recent errors are at the end of the event
log and are visible on the terminal screen.
clear_error
Clear errors logged in the FRU EEPROMs as reported by the
show error command.
crash Forces a crash dump at the operating system level.
deposit Writes data to the specified address of a memory location,
register, or device.
examine
Displays the contents of a memory location, register, or
device.
exer
Exercises one or more devices by performing specified read,
write, and compare operations.
floppy_write Runs a write test on the floppy drive to determine whether
you can write on the diskette.
grep Searches for “regular expressions”—specific strings of
characters—and prints any lines containing occurrences of
the strings.
hd
Dumps the contents of a file (byte stream) in hexadecimal
and ASCII.
info
Displays registers and data structures.