pdp11 BBC BASIC for the DEC PDP-11
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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

  		• Download 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.
  		• With 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 prompt.
    Install shows more detailed examples on running PDP-11 BBC BASIC. You can also see blog entries following PDP-11 BASIC's development.

    Title Version Files Size Description
    BBCBasic 0.15
    31-Jan-2012     		bbcbasic 12K Current development version.
    Author: J.G.Harston.
    blog       Blog following the development of PDP11 BASIC.

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