[vcf-midatlantic] Revised, My take on "what is vintage computing"

Dave McGuire mcguire at neurotica.com
Wed Dec 23 19:00:18 EST 2020

On 12/23/20 1:51 PM, Herb Johnson via vcf-midatlantic wrote:
> A kind of predecessor was ALU chips like the 74XX181 chips, with related 
> carry and shift and register chips in the series. Again - minicomputer 
> CPUs were often constructed from such chips. Some CPUs were made from 
> bit slices too. They were all the bleeding edge at some point. David 
> Gesswein mentioned the Tektronix graphic terminals as an example.

   The DECsystem-2020 and VAX-11/730 (and /725) are additional examples 
of an entire "large" CPU built around bit-slice processors, Am2901s in 
these cases.


Dave McGuire, AK4HZ
New Kensington, PA

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