Microsoft Basic Compiler Version 5.2
BASCOM for Osborne Computer

  • Sealed (shrink-wrap) three ring binder
  • 5.25 floppy
  • Manual
  • Licensed from Microsoft
  • Version 5.2
  • Part #2G0009-01
  • Sold as is, not tested, no returns.
  • No Osborne Computer included
  • Thank you!


The Osborne 1 was the first commercially successful portable microcomputer, released on April 3, 1981, by Osborne Computer Corporation. It weighed 10.7 kg (24.5 lb), cost $1,795 US, and ran the CP/M 2.2 operating system. Powered directly from a mains socket as it had no on-board battery, it was still classed as a portable device since it could be packed away and transported by hand to another location.

BASCOM takes any compiles any MBASIC ".bas" file into a regular CP/M .COM program. MBASIC is not required to run the compiled COM programs. The compiled programs run faster than .BAS programs with the MBASIC interpreter. BASCOM includes MicroSoft's macro assembler and linker programs, M80 and L80. BASCOM was originally $400.00