Steve srb at unixsh.com
Sat Feb 11 02:44:09 AEST 2023

Sandy wrote the original CDL tool set.  It had a graphical front end that provided for chips , pins, 
wires etc and generated a connectivity list which was then consumed by wire wrap and other back end 
tools.  We had Tek 4014 terminals at the time (late 70s is what I recall) which made all this 

I took it over the code base at some point and among other things added macros so that repeated wire 
to chip connection patterns and names could be generated without the labor intensive one wire at a 
time e.g. wire[0-7] connects to pin[0-7].  The macro would be expanded so that wire0 connected to 
pin0 etc.  This later system was call UCDS - Unix Circuit Design System.

UCDS was used by Joe Condon for the chess machine that he and Ken built.  Ken may remember more 
about this.  It was also one of the reasons that BTL got a $1B Navy contract.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://minnie.tuhs.org/pipermail/tuhs/attachments/20230210/393da663/attachment.htm>

More information about the TUHS mailing list