Computers

Software for the S3a, programmers' FAQ and a Russian Psion page.

A small series 3a/SIBO programming FAQ.

Detailed descriptions of the devices, the applications, communications solutions.

A project for collating information about programming the Psion Series 3 and 3a which is not in the manuals provided with the machines.

History of Psion products: operating systems and devices.

Twiddlebit Software: OPL development tools and OPXs (OPP, OPPDBG, GPRINTER.OPX).