Self modifying code, lambda calculus - Re: ENIAC programming

Jon Elson elson at
Fri Sep 18 20:48:41 CDT 2015

On 09/18/2015 04:42 PM, Johnny Billquist wrote:
> The normal WCS option for the 11/780 was an option. Not 
> everyone had it. Were there another option with some WCS 
> that actually everybody had?
I don't recall clearly whether our 780 (bought about 1980?) 
came with a small WCS or no WCS.
I do remember a big upgrade (glad we had DEC service!) that 
involved upgrading/installing WCS for
some version of VMS to run.  So, after a certain vintage of 
VMS (at least) you HAD to have WCS on the 780.


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