Alan Mimms wrote:

This issue probably is nearly moot on the nearly non-superscalar (dumb as a rock)
8xx processors, but is MUCH more important (i.e., VITAL) on the 82xx processors
with the 603ish core and on all "real" PowerPC processors.

In defense of the 8xx, it isn't as dumb as some people believe.
It is a PPC core that performs a number of performance enhancements,
including branch folding and speculative loads.  Not to the extent
of a superscalar (and the 603 isn't a shining star compared to
other PPCs, either), but they still happen and you have to be
careful of them just like any other PPC.

Designing a system using a "it doesn't happen as often" requirement
is a very poor engineering practice.


	-- Dan

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