>I thought though that sun had a product that did 56k synchronous off
>the zs....

This is certainly possible, but note that synch operation is not
compatible with standard RS232 devices (`asynch').

The async clock limit (at x16) is 57200 baud, so 56kb/s (57344 b/s)
would not be impossible even in asynch---the error here is less than
0.3%.

Chris

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