On 07/02/2012 21:40, Glen Slick wrote:
On Tue, Feb 7, 2012 at 11:14 AM, Kevin
Reynolds<tpresence at hotmail.com> wrote:
>
> The cabinet for the microvax I is different that the BA123 and the
> BA23 that are available for the later vaxes I believe. This model
> has a chassis which is 6"x28"x22", and a KD23 CPU (probably
> faulty).
I have never seen a MicroVAX I, but according to this
manual the
backplane is the same H9278-A that you would find in a BA23:
Is it not just a BA23? I've not seen the machine you're describing, and
the tech manual is light on pictures, but the front panel is the
standard BA23 front panel and the dimensions are about right. Without
the normal skins that make it look like a storage heater, a BA23 is a
chassis which contains all the parts and can be rack-mounted and there's
a tabletop version as well. I have seen MicroVAX Is in BA23s, they were
moderately common, and I have seen one rack-mounted.
See pictures in the BA23 manual at
http://scandocs.trailing-edge.com/micropdp11-volume_2_enclosures-EK-186AA-M…
Pages 1.2, 1.14 show the chassis layout
Page 2.2 shows the various enclosures
Page 2.20 shows the tabletop appearance; it's just the pedestal turned
sideways and with the foot removed.
Figure 8.3 in the MicroPDP-11 Systems Maintenance Guide has a better
picture, but I don't know if that's online anywhere.
--
Pete Peter Turnbull
Network Manager
University of York