1GHz PDP-11 (Re: Prints for an 11/70)

From: Dave McGuire <mcguire_at_neurotica.com>
Date: Wed Dec 12 23:55:38 2001

On December 12, Jeffrey S. Sharp wrote:
> What little I've read about UNIBUS told me that UNIBUS has no set clock
> rate, and that the speed of communication between two devices would be the
> the highest rate that both devices could handle. If you've got nothing
> but Sridhar-made fast devices on the bus, what stops you from having a
> UNIBUS operating at say, 33MHz to 100MHz on average?

  I don't recall the specifics of Unibus...but its bandwidth is commonly
stated as being about 7MB/sec. If that's the case, then it's unlikely
that it's asynchronous. But perhaps it is asynchronous, and 7MB/sec
was just the maximum.


Dave McGuire
St. Petersburg, FL
Received on Wed Dec 12 2001 - 23:55:38 GMT

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