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Why are there so many graybeards in FOSS?
(www.theregister.com)
This is a most excellent place for technology news and articles.
That part is about IBM PC architecture more than it is about computers in general, including personal computers of that time.
EDIT: I wonder, why all the downvotes, this is just true, look at Macs of that time. I'm not saying interrupts themselves are or a concept of DMA itself is.