Why are there only four registers?

Posted by cam on Stack Overflow See other posts from Stack Overflow or by cam
Published on 2010-05-20T22:38:56Z Indexed on 2010/05/20 22:50 UTC
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Why are there only four registers in the most common CPU (x86)? Wouldn't there be a huge increase in speed if more registers were added? When will more registers be added?

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