12 Oct
2013
12 Oct
'13
12:51 a.m.
On 10/12/2013 12:22 AM, Holm Tiffe wrote:
Josh Dersch wrote:
Well, this particular machine certainly has a lot more in common than
the exterior appearance and software compatibility. I don't have my Pro
350 handy at the moment (it's in storage) but here's a link to a picture
of the disk controller from the Pro:
http://www.pdp11gy.com/PC350/DEC350_5.jpg
And here's a picture of the same board from the Elektronika:
http://yahozna.dyndns.org/scratch/elektronika/disk%20controller.jpg
I'm sure there are some differences here, but even at a component layout
level they're very similar.
Thanks for the confirmations. The step-up from
110->220 should be pretty
easy to deal with, but I'm wondering how tolerant this supply would be of
60Hz A/C. I suppose if it's a direct clone of the Dec Pro's supply it
might be OK, I'll have to compare :).
- Josh
Better forget the Idea about a "direct clone".
The computers are looking like ther american originals but if you are
looking deeper, they don't have much in common.
Most of the software is compatible, ok. 
That's my experience for years. Please don't think russians are idiots
that are only able to copy something.
I have never said such a thing.
There are performat PDP11 Processors
with no "Original" from DEC. They alo build an VAX Micro that was acting
like a VAX 750, something like this was never made by DEC.
Certainly. I have an Elektronika MK-85 (no direct relation to the
straight-85):
http://gregescov.tripod.com/calc.htm
Which is by far the most interesting use of a PDP-11 CPU clone I can
think of, though the battery life suffers for it :). (And it's a
behavioral clone of the Casio PB-100 with some enhancements and
interesting bugs...)
I don't know why they copied the look of their boxes 1:1 but I'll bet you
will be not able to put a DEC card into the slots of that Machine, mostly
they copied the singals and ther order, but the pin distance is metric and
not imperial.
I'll have to check that, as I said, I don't have the 350 on hand. But I
don't doubt that you're right.
Boxes like the PSU will be totally different inside, but take a look into
the PSU, possibly you will find a Jumper oder soldering bridge that will
change the supply voltage to 110V.
About the 50 vs. 60Hz: that will be no problem but you will have for sure
Daytime Clock that will run away...
Thanks. I did a cursory inspection of it but I'll give it another go
over just in case.
- Josh
Regards,
Holm