🚀 go-pugleaf

Frosted Flake wrote:
> 
> Chris Bigos wrote:
> >
> SNIP
> > >
> >
> > The only "large" control panel in a 9020 system, other than the CE and IOCE
> > control panels, was the overall system control panel. This was called a
> > System Console (SC) in a 9020A/D CCC and a Configuration Console (CC) in a
> > 9020E DCC. I've never seen a Configuration Console in the flesh, as we only
> > had a CCC at West Drayton. (I tell a lie - I would have seen one at
> > Oklahoma, but I don't recall what it looked like). I do have someSNIP
> >     Regards, Chris.
> >
> > Email: Chris...@COLDmail.com
> > (Make the obvious temperature change to the spam deflector)
> As I recall, the System Console had two fairly large red 'eyes' near
> the top center.  They displayed some type of state indication, perhaps
> in binary, I don't really remember.
> Back in the late 60's, early 70's, I designed the manufacturing tests
> for the 7289 (PAM) and 7265 (System Console).  Incidentally, IBM sold
> a similar system to NASA, the PAM was called the MLA (Multiplex Line
> Adapter).  A lot of the devices were the same of similar to those in
> the PAM.  I was told by someone that the name was changed so the NASA
> would pay for new development of the MLA even though it was
> essentially a PAM.  I don't recall the model number for the MLA, it
> was NOT 72xx though.

And then there was the machine that used two of the old 'tuning
eye's to indicate the data and address bus contents.  They were
driven by simple r/2r ladders off the bits.  The r's were 5%
carbon, so accuracy and monotonicity were not especially good. 
The point was that response was MUCH faster than incandescent
pilot bulbs, and LEDs didn't exist.

-- 
Chuck F (cbfal...@yahoo.com) (cbfal...@XXXXworldnet.att.net)
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