I have seen almost anything once on Sun machines :O Are you testing with
all cables disconnected just power and serial terminal? I have seriously
seen a bad network cable cause mysterious hangs on a SS10 once...
You've tried some of the other usual troubleshooting stuff like swapping
out/around some of the memory, removing Sbus cards, etc?
Under normal circumstances, it /should/ drop to OF with a dead IDPROM per
my experience ... I always think of my Macs and my NeXTs as being the most
troublesome for not powering on when the battery is flat ... Suns are
almost always ... 99.99% of the time ... good about it.
Best,
Sean
On Sun, May 3, 2015 at 12:50 PM, Jules Richardson <
jules.richardson99 at gmail.com> wrote:
The PROM battery appears to have died in my Sun U1 (Ethernet address and
host ID all ff's etc.).
I can hack a new battery into it at some point - but can anyone confirm
whether the openboot environment should be responsive even while the
battery is hosed? Via a serial console, I can send a break and get an OK
prompt back, but then it appears to go unresponsive and won't accept
commands (no key presses aren't echoed back to the screen).
Using the same terminal emulator / cabling is fine with my other Sun (a
U2), so I'm reasonably confident that the environment is OK, and that the
problem is local to the U1 machine.
cheers
Jules