Unibus disk controller with modern storage

Paul Koning paulkoning at comcast.net
Fri Oct 21 13:41:26 CDT 2016

> On Oct 20, 2016, at 6:05 PM, Noel Chiappa <jnc at mercury.lcs.mit.edu> wrote:
>> From: David Bridgham
>> the right threshold voltage to meet the receiver spec
> The UNIBUS spec says the 4 crucial receiver parameters are input thresholds
> (high and low), and the input currents (high and low); the crucial
> transmitter parameters are the output low voltage (at 50 mA sink), and
> the output high leakage current.

Where did you find those specs?  I see a Unibus Spec on Bitsavers, but it doesn't appear to mention the electrical specs.


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