I want to connect my Psion netBook over Ethernet to a RISC OS machine to
make the data transfer faster. Also I want to connect two printers using
Ethernet (a fast postscript-laserprinter and an A2 inkjet printer).
For me, I have no experiences with networking, and so I ask myself if this
things are possible and how to do it? I have just an Ethernet card for the
Psion now. Anybody with experience here? What I have to take care of,
looking for, must give attentation to make it? And which equipment I will
need for the RISC OS machine?
In article <email@example.com>, Alexander Ausserstorfer
> I want to connect my Psion netBook over Ethernet to a RISC OS machine to
> make the data transfer faster.
I'm not aware of anything for directly linking a Psion to RISC-OS
systems. There is a Linux-Psion Link protocol for which source code is
available, so it's potentially portable to RISC-OS.
> A daemon (ncpd) handles the serial connection and provides it's services
> on a local TCP socket. Currently, several frontends using these services
> are part of the package:
> * plpbackup, a command-line backup program.
> * plpftp, a FTP-like frontend with some extensions.
> * sisinstall, a SIS package installer.
> * plpnfsd, a daemon, providing the Psion's file services via a
> nfs-mounted directory.
> * plpprintd, a print server for printing via PC.
The latter would suggest that, if you can port the PLP back-end (the
"daemon" in the first paragraph quoted) to RISC-OS, then the rest should fall
fairly easily, if you've already got your various printers working on the
But if you're wanting speed of data transfer to/ from the Psion, for
anything much above the trivial it would be faster to push the data from Psion
to the memory card, close the Psion, transfer the memory card to the host
machine (£5 adaptor for any PCMCIA-equipped machine, and you can get PCMCIA
slots for desktops) and pull the data from the memory card. Since the
pull-insert cycle takes about 20 seconds, and the fastest the serial link can
run at is 115kbps, then anything over approximately 2Mb (~200 kilobytes,
allowing for serial overhead) would be quicker to transfer on the card than
over the serial link.
If you need conversions between Psion file formats and the formats
supported by RISC-OS programs, that's an entirely different question.
Aidan Karley, FGS
Written at Wed, 06 Sep 2006 09:20 +0100, but posted later.