> Hitting Cntrl-Alt-Enter will drop you to the PROM
> console.

Is there any way to do this on a 5000/260 with an LK401 keyboard??

>  The halt button on 3MIN and 3MAX+ systems is an ordinary I/O ASIC
> interrupt which can get masked and also needs a working handler to have
> any effect at all.  Thus e.g. if a kernel locks up with interrupts masked
> in the CPU, the halt button won't recover -- a reset, i.e. effectively a
> power cycle is required.

Hmm, this must be the button next to the LED panel (5000/260=3MAX+,
right?)  I just tried pressing it, and it did halt the machine (actually,
it rebooted as haltaction=b) However, on a crashed machine, this button
has no effect, as you surmised!! Not particularly useful....

Is there a way to preserve the halt interrupt so that the button actually
works when the machine is frozen?? Doesn't sound good - but maybe it's
possible to mask the non-halt I/O interrupts instead of all of them?

Actually, is there any way to figure out what is going on if a machine
(3MAX+) locks up with interrupts masked?? Just being able to drop into
some kind of monitor would be nice.... ;-/

Bob