/34 & ba11-k regulator allocation?

John A. Dundas III dundas at caltech.edu
Fri Oct 13 10:25:11 CDT 2006


Jay,

At 10:07 AM -0500 10/13/06, Jay West wrote:
>Exactly what regulators are required as a minimum for a /34 that is 
>just a dd11-pk with no expansion? Assume just a processor, one 
>memory board, RL11 controller, one DL11W... nothing heavy.

A timely question as several of us seem to be working on this model 
currently.  [Thanks to Julian, Tim, Don, Al, Henk, and all others 
that have contributed to my own success...]  Others will no doubt 
correct my errors but...

I believe for the configuration above one H744 (position 2) IS 
required.  I believe a H745 (position 1) IS also required.  A second 
H744 (position 3) does NOT appear to be required based on your 
configuration above.  I'm not clear whether or not a H754 is required 
in position 4.  My take is that regulator is used primarily for core 
memory (+20, -5), though I could be wrong.

Note that there are other regulators that can be used in place of the H744.

John



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