serial console on UP2000

From: Albrecht Gebhardt (albrecht.gebhardt@uni-klu.ac.at)
Date: Fri Apr 30 2004 - 05:17:08 EDT

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Hi,

during the last 3 month two of my Tru64 machines (both UP2000) died.
On the first machine (an UP2000 with only one 666MHz/2MB cache processor) the
raeson seems to be the CPU itself (no "POWER GOOD" signal on motherboard
LED). The other machine (UP2000 with two 666/4MB cpus) has a fried power
supply.

I managed to combine the motherboard+cpus of machine 2 with the housing and
power supply of machine 1. After powering on all fans are working, all
onboard LEDS show "OK" (DC signal / SROM load / Power good) but I get no
access to the SRM console (empty blue VGA screen).

After jumpering the board into recovery mode I get access (via VGA) to the
onboard Debug Monitor (DP264> prompt) and it reports 2 working CPUS and the
RAM sizes and gives me lots of lowlevel commands.
I can start the AlphaBIOS via "bootrom nt" ... works as expected
starting the SRM console via "bootrom unix" ends at the abovementioned blue
VGA screen.

I guess that somehow the SRM switched to a serial console. I plugged a VT320
with proper settings (8/0/1 9200) into COM1/COM2 but nothing appers. (the
terminal settings should be ok because I plugged it off another alpha where
ist was working).

I found some hints that only late UP2000 boards have a serial console
available on port COM1, my boards seem to old.

Now what can I do to get a working SRM console back?

I guess I have to load a new SRM flash image via "flload" or similar debug
monitor commands.

Has anybody experinces with similar situations to share?

Thanks in advance

Albrecht

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