"Dunlap, Randy" wrote:
> Gosh, even USB 2.0 still only allows 127 devices (per
> bus/controller). Why the 255?
Not A Clue (tm). I can only guess that either:
A. the committee had some idea that you could have lots of ports on a
single huge hub (wiring the house?), and you just move devices around.
B. the committee assumed you would use a single byte for the number of
ports, and it is variable length so you don't incur too much overhead.
C. it was some kind of compromise / screwup in the decision on how many
devices were supported by a single bus.
Option C seems the most likely.
Brad
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