OPL EPOC R5 SDK
The Psion Series 5mx, Revo and Revo Plus, Series 7 and NetPad
all use the EPOC R5 (Symbian OS v.5) operating system.
The OPL Software Development Kit (SDK) allows you to develop
software for this operating system in Psion's own BASIC-like structured
language OPL (Organiser Programming Language).
"OPL is a BASIC-like rapid application development
(RAD) language, with historical roots in the Organiser II and Series
3 handheld computers from Psion PLC, available since the mid 1980s.
OPL may be programmed directly on EPOC devices such as the Psion Series
5. For convenience, the OPL SDK supports PC-based development using
the emulator and standard EPOC SDK tools.
OPL provides access to EPOC’s most commonly-used APIs.
Other APIs may be accessed using OPL extensions (OPXs) written in C++.
OPXs may also be used to implement optimised library functions for OPL
programs. OPX development requires an EPOC C++ SDK."
(taken from the EPOC SDK Help file)
The Psion EPOC R5 SDKs are available from a limited number
of sources: internet downloads, on CD-ROMs accompanying books or on a
CD-ROM ordered from this website.
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Installing the SDK
- The SDK will be downloaded as a zipped file (or files),
so unzip it to a folder of choice, e.g. C:\PSION\EPOC
- When unzipped, install the program by running the file SETUP.EXE.
The EPOC emulator will install to the default location,
C:\EPOC32
- Read the
readme.txt file. You may need to create
a virtual drive to run the emulator. If you do you can add
the following line to your AUTOEXEC.BAT file:
C:\WINDOWS\COMMAND\subst F: C:\EPOC32
(where F: is the name of the virtual drive, and
C:\EPOC is the location of the Emulator. Alter
these for your own computer setup).
You can read about it here on the Symbian Tech Notes: Which
drive should I install my Software Development Kit on?
- Tip: If you do not create a virtual drive you may find in
My Computer that the default icon for Drive C has changed
to the EPOC icon. In this case, you shall need to create a
virtual drive to correct this.
Drive F will now have the EPOC icon. You may find that
if you double-click the F drive icon you are prompted to
set-up Windows. To correct this right-click Drive F and
select "Open" (or locate C:\EPOC32) and edit the file autorun.inf
removing, or REMing the line OPEN=SETUP.EXE
- As this is simply the EPOC operating system running under
Win32 you have no need for BAT files or rebooting to DOS.
Simply choose which size screen you want to run and click
the appropriate icon. The emulator will first open a DOS screen
and then the main interface.
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