PCjs Machines

Home of the original IBM PC emulator for browsers.


OSI Challenger 1P 6502 BASIC Extensions

By Jeff Parsons

NOTE: I suspect the dump of the tape containing this machine-language program is either damaged or incomplete, which is unfortunate, because these were a nice set of Enhancements and Patches that I had created around 1980-1981 for the Microsoft BASIC Interpreter that came with the OSI Challenger 1P. Hopefully I’ll find time to dig into this again and figure what the problem is.

OSI Challenger 1P

Challenger 1P