Throw the cat among the pigeons

Dan Sommers dan at tombstonezero.net
Wed May 6 23:16:53 EDT 2015


On Wed, 06 May 2015 09:12:05 -0400, Dave Angel wrote:

> Remember the days when you knew how many cycles each assembly
> instruction took, and could simply add them up to compare algorithms?

I do!  I do!  :-)

And then the MC68020 came out, and instruction execution overlapped in
weird (but predictable) ways, and interrupts would have different
(unpredictable) latency depending on how much internal state of the CPU
had to be saved and restored.

Man, am I *old*.

Dan



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