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Actually, technically the language was EDL; the operating system was EDX (Event Driven eXecutive).

What I remember was that the language actually ENCOURAGED runtime modification of the program code.  As just one example, you could label a GOTO instruction and then modify the target of that GOTO with the address of another instruction.

I was 18 or 19, and way too clever, so I made use of this sort of trickery the time.

( And those of you who know me, know my opinion of "clever" programming.  :P  )


On 6/9/2018 12:34 AM, Don Brown wrote:
While I working with RPG on a S34 I also worked with EDX on a Series1.

Anyone remember EDX ?

IBM Australia use to use Series1's to control their door security back in
the 70's - Funny story of how to make doors open with a metal bottle
opener :-)



Don Brown







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