3 ms·

IBM themselves released the board schematics for the 5150.

• greglindahl 8y ago
  IBM also released the source for the BIOS - it’s still copyrighted.
  • justin66 8y ago
    In what year did they do that?
    • greglindahl 8y ago
      I recall it being part of the documentation that came with the original PCs. > IBM published the entire listings of the BIOS for its original PC, PC XT, PC AT, and other contemporary PC models, in an appendix of the IBM PC Technical Reference Manual for each machine type. https://en.wikipedia.org/wiki/BIOS https://en.wikipedia.org/wiki/BIOS
    • kevin_thibedeau 8y ago
      The same year the PC was released. The BIOS was listed in the tech reference manual appendix A. http://classiccomputers.info/down/IBM/IBM_PC_5150/IBM_5150_Technical_Reference_6025005_AUG81.pdf http://classiccomputers.info/down/IBM/IBM_PC_5150/IBM_5150_T...
• peter_d_sherman 8y ago
  You wouldn't have a link, would you? I'd be interested in this...
  • b11484 8y ago
    http://www.minuszerodegrees.net/manuals/IBM_5150_Technical_Reference_6322507_APR84.pdf http://www.minuszerodegrees.net/manuals/IBM_5150_Technical_R... This is the technical manual for it
    • peter_d_sherman 8y ago
      Thank you very much! Much obliged!