Interesting history, thanks. Sorry if this is a silly question but is the "upper... | Hacker News

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bogomipz on Sept 20, 2019 | parent | context | favorite | on: Common Systems Programming Optimizations and Trick...

Interesting history, thanks.

Sorry if this is a silly question but is the "upper" in these examples the most significant bit end of the address then?

kabdib on Sept 20, 2019 [–]

The most significant bits, yes.

(The world numbers these from 0 to N, least significant to most significant. IBM numbers them from 1 to 32, with 1 being most significant. I guess that made sense to accountants).

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