CP/M-86 Timeline

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This is a project aiming to document the timeline of various versions of the CP/M-86 operating system, focusing primarily on those released for the IBM PC.

For each version, the following information is collected into a table:

  • Date of release, or at least the year if unknown
  • Release name and version
  • Following patches to the release, if any (e.g. CP/M-86 1.1 for IBM PC XT)
  • BDOS version, as reported by function 12 (MRTVNO)
  • Specific API differences, if appliable
  • Present features, especially DOS filesystem support, DOS application support, and multitasking
  • Supported media types (e.g. fixed disk, 160k floppies, ...)
  • Links to preserved copies: source, binaries, and floppy images, both official and unofficial

The CP/M-86 history documentation project channel on Discord is the chat associated with the project, you can join it if you are interested in helping out.