EPOC16 was an operating system developed by Psion for portable devices, primarily PDAs. Originally it was called simply EPOC. Later it began to be referred to as EPOC16 to distinguish it from the next generation of the operating system: EPOC32, which in turn was known as simply EPOC.
Software for the S3a, programmers' FAQ and a Russian Psion page.
Productivity software for Symbian phones.
Popular shareware and freeware programs for the Psion 3a, 3c, Siena, Series 5 and Geofox-One machines.
A small series 3a/SIBO programming FAQ.
Detailed descriptions of the devices, the applications, communications solutions.
History of Psion products: operating systems and devices.
A project for collating information about programming the Psion Series 3 and 3a which is not in the manuals provided with the machines.
Twiddlebit Software: OPL development tools and OPXs (OPP, OPPDBG, GPRINTER.OPX).
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