> I'm not too deep on this, but I've heard from coworkers that have done some
> general latency testing (not related to ZVG) that USB can introduce quite a
> bit of latency compared to even an add-on parallel port, although a lot of
> the newer add-on parallel ports can be terrible too. They takeaway they had
> from these tests is that anyone that really wants low latency should buy an
> ancient PC. :(
Or just make sure that the entire frame's worth of data can be buffered
down on the vector board itself. Let the timing/drawing be done by the
micro on the board and just keep USB as a transport for frame data, then
latency isn't anywhere near as big of an issue.
-->Neil
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C. Neil Bradley - Excessive process falsely elevates the incapable and ties
the hands of the exceptional.
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Received on Mon Apr 16 19:35:37 2012
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