The Psion Link Protocol (for Psion 3, aka SIBO)

The information provided here is outdated, because better and more accurate information especially for EPOC is available. But nevertheless it was the thing that started the ball rolling.

Version 1998-08-18

I actually guessed most of the protocol out of two hex dumps... Sample 1 and Sample 2.

More detailled and accurate information and implementations can be found at:

• Michael Pieper at Palmbeach: BeOS driver
• Phil Proudman created a Linux program "plp" first. Web pages now defunct.
• Matt Gumbley had an alternative approach for Linux. Web pages now defunct.
• My favourite implementation was Fritz Elfert´s  plpnfsd. A Linux/Unix NFS Server/Client borrowed from p3nfsd and Phil Proudman´s plp. Now known as the plptools.
• Alexander Thoukydides has written an excellent documentation and an implementation "PsiFS" for Risc OS. The documentation is now found at sourceforge in the plptools project.