I've noticed an anomaly with the endpoint 0 (EP0) OUT
"byte count" register (BD0OBC) on the PIC16C745 (one of the USB PICs). I've discovered that it must be set after
each EP0 OUT transaction in order for the next EP0 OUT
transaction to work.  This is not required for EP1 OUT and
EP2 OUT (BD1OBC and BD2OBC, respectively).

It would seem to me that the behavior for EP1 OUT and EP2
OUT is correct (why would you need to set the packet size
for data you receive?  It only gets overwritten).  At the
least, I'd expect the behavior to be consistent across the
endpoints.

Does anyone know why the endpoints should differ in this
regard?

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