HDLC defines the FCS. And the 8530 itself does most of the work at the
per byte level
> * Is it easy/difficult/impossible to have different encapsulations with the
> same driver?
Its not impossible. The driver can respond to config ioctls and can also hand
upwards frames with different protocol types
> * Such sync hdlc lines do operate full duplex, don't they?
Normally
Alan
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