Andrew Clegg wrote in a message to Rob Landley:

 RL> True, but TCP/IP just defines a data packet.  Slip is an
 RL> implementation of TCP/IP, so are PPP and the standard ethernet one. 
 RL> You -COULD- do a paralell port implementation of it.  Just because
 RL> it's possible doesn't mean it's standardized, though.

 AC> Actually I think it is standardised. I have read several
 AC> references to PLIP drivers, in various different places --
 AC> they're not common but they do exist. 

PLIP is de facto standarized by the Clarkson/Crynwr implementation, which
comes with full source for a DOS "packet" driver.  PLIP has also
been implemented in other contexts, notably in Linux.  No RFC or other
standards document exists, as far as I know.
 
-- Mike


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