PROM Revision

[Fuat C. Baran]

In article <8215 at brazos.Rice.edu> patel at cvlsun1.ece.drexel.edu (Patel Maqbool 387-1784) writes:

>We just got our SunOS 4.1 release. The release manual says that the prom
>revison on the Sun 4/260 and the Sun 4/110 has to be at least 2.x. However
>we have rev 1.3 on our Sun 4/260 and 1.8 on our Sun 4/110. Can we still
>load 4.1? If not, why?

Apparently the manual is incorrect.  It only applies to Sun-3/xxx systems
(I can dig up the exact list if necessary -- Sun faxed me a copy and I
don't think there are any redistribution restrictions on it).  Sun field
offices received a correction sheet for the manual, where they point out
the error in the manual.

We had two Sun-4/280's at PROM rev 1.7 and they were able to boot (once we
had the xylogics tape controller properly configured).

>1) What does the PROM have in it apart from the SUN Logo and boot device
>   information?

Support for the various boot devices seems to be the biggest thing.

						--Fuat

P.S.  Since upgrading to SunOS 4.1 we have had several problems.  Mainly
on two of the four systems upgraded, /etc/dump, when run with the system
multi-user has crashed the machine with a panic: writeback error.  The
system then hangs and a reset from the CPU board is needed to regain
control.  We are still working with Sun to try and figure out what is
going on.  Prior to the upgrade things were fine.  Along the way we have
also received new CPU boards with rev 3.0 PROMS.

We are also having problems that seem to be related to the pseudo-tty
support.  scripts failing, people getting each others sessions, etc.  We
are also looking into those problems.

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