At 10:14 PM 3/6/97 +0300, you wrote:
>What happens if I use a 30MHz crystal with a 16c84 (10MHz max?)

I haven't been able to push the '84 past about 16MHz.  Past that and it
fails entirely.  of course, for a product for resale you would actually want
to stay right near the rated 10MHz spec.

It is possible, you know, to port '84 code to something like a 16C554; these
can be run up to 20MHz and I suspect some might operate at up to 30MHz, but
I'd hate to rely on that for a product.  Would 20MHz suffice?

Also, you might have better luck with the high speeds using a TTL oscillator
as opposed to a crystal.  I am not sure, but it might be worth a try.

-Todd



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