> So that leads me to a whole new question: what's the best way to get an
> analog output from a PC that is fast enough to control a vector monitor
> beam accurately? Is it the ISA bus of the PC that is not fast enough?
> Would a PCI board do the trick? (The best I've seen in premade analog output
> boards is 2us, which is still larger than 250ns.) I'd really like to be
> able to just buy a couple of speedy 16 bit DACs and slap them onto the back
> of my PC, but of course there's no convenient high-speed output. Serial
> and parallel are probably too slow, and USB is probably too complicated for
> me to wire up.
The USB would be easy. Go check out the last couple of Circuit Cellar
issues -- there was a whole writeup on designing for USB. I'd just
wire up some intelligence at the remote end.
Kurt
Received on Fri Nov 26 09:55:59 1999
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