4.2 died on our VAX.

[Joe Kelsey]

There is a command file on every VAX-11/780 standard distribution
floppy (and standard distribution cassette for 730s, 750s will have to
punt here!) called CRASH.CMD.  This routine simply displays the PC, PSL
and all stack pointers, replaces the PC with -1, the PSL with 1F0000
(kernel mode, IPL 31) and CONTINUEs.  Bang! down comes the system with
an appropriate dump file.  On a 750, if you have 4.2, you could include
CRASH.CMD in your console cassette and kludge something or you could
type up a short list of commands which (almost) anyone could follow to
do the same thing.  Try it!

/Joe