Unix v6 and 11/23 - Success!

From: SP <spedraja_at_ono.com>
Date: Sun Jan 6 09:02:49 2002

Congratulations for your advance. I have one PDP/11-23 PLUS
with 128 Kwords of memory. I don't tried to boot it because
I need to take my own RL02 from Germany where it's actually.
But I use to startup this V6 distribution under Bob Supnik's
SIMH v2.8-5. I've detected the panic problem in multiuser mode
some months ago in my private hackings. I should agree to know
all your advances and hacks in this aspect, please.

Thanks and Greetings

Sergio

-----Mensaje original-----
De: Kevin McQuiggin <mcquiggi_at_sfu.ca>
Para: info-pdp11_at_village.org <info-pdp11_at_village.org>
Fecha: domingo, 06 de enero de 2002 10:30
Asunto: Unix v6 and 11/23 - Success!


>Hi All:
>
>Thanks for the assistance today. Thoughts about the DEC firmware wanting
>a NOP in early bytes of sector 0 must have been correct. I was able to
>get to ODT via the HALT button, and entered a 4 instruction bootstrap
>(basically, read current sector into memory starting at 0 and wait),
>halted the machine, entered "0G" via ODT, and watched with glee as Unix
>came up.
>
>Some confusion ensued when I couldn't get it to work a second time, but
>then I realized that due to the simplicity of the bootstrap, the heads
>would have to be over sector 0 for this to work. Unloading and reloading
>the pack reset the heads to sector zero, and the boot process is now
>easily repeatable. A better bootstrap would help in the longer run.
>
>Single user mode comes up fine, I get a panic while trying to get it to
>come up in multi-user, but it's great progress for the day.
>
>Thanks to all on the list who replied with suggestions.
>
>Kevin
>
>
>
>--
>Kevin McQuiggin VE7ZD
>mcquiggi_at_sfu.ca
>----------
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Received on Sun Jan 06 2002 - 09:02:49 GMT