In message <25122.897600804@dnaunix.pa.dec.com>, "Chris G. Demetriou" writes:
>Are they actually EB164s?  (I doubt it.)  If they have the Pyxis
>chipset, you probably want to be running NetBSD-(very-)current on them...
>(If you're not, I could believe you're seeing the problem you
>mention.)

That's what the kernel says when its boots up. i've got about
eight of the 533 mhz 164xl motherboards... what's the way to tell
about the chipset?

>
>well, ra and sp are good choices, but those will first take you
>through the kernel trap handlers, etc.  The information you really
>want is the stuff "above" the machine-check handler invocation, which
>ddb's trace facility probably won't be able to give you easily.
>

good i'll get the architecture manuals out, and then see what
stack frame's look like, then see if i can hunt down the stack.

i've done stack unwinding code on ibm-rt's before... how bad is ddb
wrt adding code to try and unravel the trap?

mts.