Following a reboot of my VAXstation 4000 VLC, after having run it with a
custom 1.6 kernel that stripped out some excess stuff from GENERIC, it
now seems rather unhappy.  It no longer comes up to the firmware console
prompt.

Along the back there are some diagnostic LEDs.  At initial power up, all
of the LEDs come on.  A split second later, the LED in position 1 goes
dark.  It then stays dark and the machine sits there for as long as I've
left it (20-30mins).

    7654 3210
    ---------
    oooo oo.o

Fortunately, I've a few other VLCs of the same type and firmware
version on which I've not yet loaded NetBSD.  Cross-checking them
with this system's current behavior, it's evident that something just
isn't right.

It's possible that this is just some hardware glitch that can be
remedied, but given the history of nvram corruptions with the VAXstation
4000/90s, I'm keeping that in the back of my mind.  Given that the VLC
is a contemporary of the 90 and 90A in terms of its year of release,
I suspect it has a similar type of reprogrammable firmware.  Perhaps
I've tickled something with my custom kernel?  The GENERIC kernel seemed
to work fine, even with multiple reboots.

Anyway, I'd be curious to find out what the above LED pattern
signifies.

-brian.