32-64 bit switches

Subject: 32-64 bit switches
From: Brian Barnes <email@hidden>
Date: Sun, 29 Jun 2003 11:01:31 -0400

Just a quick question that's been on my mind ... for a while we'll probably be dealing with 32-bit libraries in our shiny new 64-bit apps. Is there any kind of context switch in software or is it all handled transparently on the chip (not sure how that would work if it would be possible.)

I assume it's something very small (no where near going into a 68K emulator :) ) but just curious if any engineer wants to reveal this.

[>] Brian
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