Re: MicroVAX 3500 questions


Hello,

I do have one of those blank plastic cards installed in 7CD - I guess
others may have been kept by the original owner along with any disks
and the controller.

I wouldn't necessarily say that the original owner kept them, the
parts were probably removed because of an upgrade. The SCSI cards are
certainly an upgrade from the KDA50.

The machine came from HortResearch (formerly a
part of the New Zealand Department of Scientific and Industrial
Research) so they probably removed the disks before getting rid of the
machine years ago for data security reasons.

Sure, that would make sense.

After another look at my images it looks as if I misread the 5 as
being a 6 making it actually an M7625. According to the QBus field
guide that makes it a KA655-BA (workstation license). I assume the
hobbyist licenses for VMS dont take any notice of the workstation bit.- Hide quoted text -

The KA655 is between the original KA650 and KA660 in performance, and
still respectable, for a VAX. The -BA means that you can only have two
people logged in to the system, so it was either a "VAXstation" (less
likely) or a "VAXserver" (more likely -- where it's just a file/print
server), and not a timeshare system.

Regarding installing RA drives in the BA213, it is certainly possible
to do so, but the 4-way internal cable is extremely difficult to find.
I've been looking for one on-and-off for a year now, and haven't come
across one. My BA123-based VAXstation 3/GPX has a KDA50 with four RA7x
drives installed using one of those cables, and I've been looking for
another one for a BA23 so it can have an RA7x disk installed in it.

Chris
.

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