||BBC BASIC for the DEC PDP-11
I started BBC BASIC for the PDP-11 at university on the late 1980s. It got
as far as starting up, producing its startup message and prompting for
input. I've now written a PDP
emulator, so I am working on completing BBC BASIC for the PDP-11. I have
also been testing it on UNIX Version 6 and UNIX Version 7 running on the
SIMH PDP-11 emulator.
BBC BASIC uses standard PDP-11 UNIX TRAPs for I/O (eg TRAP 4 for character
output and TRAP 3 for character input), so should run on any compliant
PDP-11 UNIX. With a suitable HostIO source BBC BASIC should run on other
PDP-11 systems, eg on RSX-11.
Running BBC BASIC
Install shows more
detailed examples on running PDP-11 BBC BASIC. You can also see
blog entries following PDP-11
bbcbasic (12K, v0.15, 21-Jan-2012).
|Copy the file to an appropriate
directory or into a Unix disk image with a tool such as
UxFiler. On Unix a
suitable location would be /usr/bin/bbcbasic.
PDPTube on RISC OS,
Windows or UNIX, type bbcbasic at the PDP> prompt. PDPTube implements
the full BBC graphics interface.
|With a real PDP-11 system, or an
emulator that boots into Unix, log on and type bbcbasic at the user
||Current development version.|
||Blog following the development of PDP11 BASIC.
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- Authored by J.G.Harston
- Last update: 31-Jan-2012