Hi,
If you were following Joerg Hoppe's recent PC05 auction on eBay, you might have
noticed that his system had an M705 in the backplane where I would have
expected an M7050. This is the way he received it and the restored unit works
as it should.
Clearly the cards are similar but different
> From: Johnny Billquist
> DEC made improved cards in many cases, where they added a 0 at the end
> of the improved card.
The other thing one will sometimes find (in PDP-11's at least, not sure about
other machines) is that an M7xyz is replaced by the upgraded M8xyz, e.g.
M7265, M7266
A lot of the early unibus boards which were 3 digit and replaced by a 4
digit were duel height boards that required a M7821 and M105 (not sure
about the numbers), and DEC built those into a quad height board and added
a "0".
On Wed, Jul 29, 2015 at 1:56 PM, william degnan
wrote:
> It could also
It could also be the extra "0" is for some reason intended to be
installed in an expansion chassis for the system. It is a stretch to
make this assumption, the thought occured because I know the power
supply in an expansion chassis I have is called h7420a, whereas the
main unit part number is h742
From: Jack Rubin: Wednesday, July 29, 2015 10:08 AM
If you were following Joerg Hoppe's recent PC05 auction on eBay, you might
have noticed that his system had an M705 in the backplane where I would have
expected an M7050. This is the way he received it and the restored unit works
as it should.
On 2015-07-29 19:08, Jack Rubin wrote:
If you were following Joerg Hoppe's recent PC05 auction on eBay, you might have
noticed that his system had an M705 in the backplane where I would have
expected an M7050. This is the way he received it and the restored unit works
as it should.
Clearly th
If you were following Joerg Hoppe's recent PC05 auction on eBay, you might have
noticed that his system had an M705 in the backplane where I would have
expected an M7050. This is the way he received it and the restored unit works
as it should.
Clearly the cards are similar but different but are
