[rescue] looking for MVME162 ROM Images

Plamen Mihaylov plamenspam at afterpeople.com
Sat Feb 17 04:29:07 CST 2018

Hi Richard,

" - ROM Checksum Error, Expected......" - this should not happen. I haven't
seen it often.
The checksum is stored in the rom/flash itself. Since you are booting
directly from ROM you could try to play with pflash and cs commands and try
to reprogram the flash memory and boot from it. But if the necessary 162bug
commands execute well, leave it this way.

" - Board Configuration Data Failure" and " - Configuration Data Failure
(Invoke 'ENV' Command) " - the nvram is dead, use cnfg;m at bug prompt to
add the correct values and then execute env;d

I strongly recommend to replace the LC with 68040. Without SCSI board
(MVME327 or MVME328-confirmed and working with OpenBSD) you have to netboot
the os. I suggest you to start with OpenBSD.


On Thu, Feb 15, 2018 at 12:55 PM, Richard <ejb at trick-1.net> wrote:

> Hi All
> So thanks for all the replies.
> I have burnt a new ROM in a 27C080, modified the jumpers and made a custom
> cable as per the information at the back of one of the manuals. Success!
> I know have the board booting to 162-Bug> prompt.
> I do however get the following WARNINGS
> - ROM Checksum Error, Expected......
> - Configuration Data Failure (Invoke 'ENV' Command)
> - Board Configuration Data Failure
> Not sure if the ROM Checksum error is worth exploring further at this
> point...maybe when I run ENV and update config data that will go away. I am
> hypothesizing that the checksum is stored in flash and what it is comparing
> isn't the same anymore.
> The other two errors make sense given what has happened to the board (been
> powered off for a very long time, might have a flat timekeeper, had the ROM
> replaced, had 3 other boards removed from the chasis)
> now the journey begins to get a bootable OS installed and maybe find a few
> more parts like a 68040 to replace the LC, 16M mezzanine board, SCSI or CF
> Card, memory board etc...
> I would be interested if anyone out there is still run an MVME chassis and
> what they run on it....down stream I was thinking of getting an i860  quad
> card or some other esoteric boards....
> Cheers and thanks again for all the insights.
> Regards
> Richard
> On Thu, 15 Feb 2018, at 10:06 AM, David Brownlee wrote:
> > On 14 February 2018 at 22:11, Plamen Mihaylov
> > <plamenspam at afterpeople.com> wrote:
> > > Hi Richard,
> > >
> > > It's not very likely, but the garbage on serial console could be
> caused by
> > > EPROM size jumper. Bear in mind that 162-212 comes with no SCSI chip,
> LC
> > > cpu and 4MB so running BSD is not possible.
> > > Theoretically you can add VME memory board and replace the 68LC040
> with  68040.
> > > This will allow you to netboot OpenBSD or NetBSD.
> >
> > The LC040 should be able to run a soft float NetBSD (its done for some
> > mac68k models).
> >
> > 4MB *should* just about boot, though you will need swap (and patience
> > :) to do anything. If you're just looking to use it as a general
> > hardware/SCSI test then it should be enough...
> >
> > David
> > _______________________________________________
> > rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
> _______________________________________________
> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue

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