Synthesizing XOR On Aug 1, 2012, at 10:32, Thomas David Rivers wrote: > >> NILL? check. OILL? check. XILL? not present > > Maybe they were running out of acreage? But XOR > is very doable with a few NOTs, ANDs and ORs... > So, maybe it just wasn't worth the effort?? > > See http://en.wikipedia.org/wiki/Exclusive_or for a nice > write-up... > Which doesn't mention PDP-8 which had no OR. Used ADD, AND, COMPLEMENT, SHIFT, SUBTRACT for even more fun.
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