22 Oct
2013
22 Oct
'13
8:50 p.m.
On 22/10/2013 19:27, Jochen Kunz wrote:
On Tue, 22 Oct 2013 10:44:45 -0400
David Riley <fraveydank at gmail.com> wrote:
David, I have a drive mounting plate and cable set you can have for ?10
+ postage at cost.
If anyone else needs Model 3100 spares I have several which don't work
in their own right but who's parts are either fine or probably worth a
trying. PSUs I can at least guarantee spin up for example.
Regards, Mark
--
http://www.wickensonline.co.uk
http://hecnet.eu
http://declegacy.org.uk
http://retrochallenge.net
https://twitter.com/#!/%40urbancamo
>> I bought a 3100 model 38 some years ago,
with monitor, mouse, keyboard
>> etc., for the princely sum of ?0.99 -- about US$1.60 -- but sadly, the
>> vendor kept the hard disk *and the mounting bracket and cables*. To
>> replace them, the cheapest price I've found was about ?70... & my
>> budget is minute.
> I haven't opened my 3100 in some years, but wouldn't a regular 50-pin SCSI
> cable and drive get you up and running? If so, I'm sure I can find both in
> my parts bin and send them to you.
I am not sure. But the m30 / m38 and the
m76 use, IIRC, a 100 pin
connector to break out two SCSI busses on one connector. But the 100
pin connector is a "standard" HD-IDC connector. Building a new cable
isn't impossible. The mounting bracket is not needed. I screwed disks
onto the base plate in VS3k1 back in the days when I played with those
VAXen.
Earlier 3100s have a 1.0something limit on the
size of the boot
drive because the firmware only issues the older, shorter SCSI
commands which can only address that many blocks. You can use
any size you'd like for the drives used once it's booted, since
the OS usually has no such problem (it's not a problem with the
SCSI controller itself).
AFAIK you can get away with making the boot partition
smaller then
1 GB. Then you can use disks larger 1 GB even asd boot drive.
Can anyone confirm that the 3100/80 does not have
that problem?
Don't know. Most likely not.
My recollection is that it's essentially a
reboxed version of
the 4000/60, which does not (none of the 4000s do, IIRC). I'll
try it out sometime soon regardless, but it would be nice to
have an idea before I dive in.
MV3k1m80 and VS4k60 are Mariah based:
http://www.netbsd.org/docs/Hardware/Machines/DEC/vax/vaxstations.html#vaxst…
http://www.netbsd.org/docs/Hardware/Machines/DEC/vax/microvaxes.html#microv…
So most likely the MV3k1m80 is not affected by that problem.