TID: Mystic BBS 1.12 A46   
   MSGID: 1:387/26 8b37005d   
   REPLY: 1213.clascomp@1:2320/105 275e4d39   
   TZUTC: -0500   
   On 14 Aug 2022, Mike Powell said the following...   
    MP> > As if all of that wasn't enough, the FujiNet also has running on that sa   
    MP> > microcontroller an emulated Z80 CPU running CP/M, which can be accessed    
    MP> > the Atari.   
    MP> I was reading an article on osnews.com recently about CP/M and how the   
    MP> owners have said it "and all its derivatives" are now free.  The author   
    MP> was questioning whether that was restricted to just CP/M derivatives, or   
    MP> also things like DR-DOS, which apparently started out as a CP/M   
    MP> extension.   
      
   I did find this, which seems to clarify things a bit:   
   https://www.theregister.com/2022/07/15/cpm_open_source/   
      
    MP> One thing I did not glean was whether or not their are also open source,   
    MP> i.e. if they source is out in the wild or if it even still exists for   
    MP> some of the projects.   
      
   CP/M is very tied to the 8080/Z80 architecture, but customizing it for a   
   particular application was up to the people who created various systems. For   
   that reason, I'm pretty sure that licensing CP/M also granted access to the   
   source code, and there are copies all over the place.   
      
    MP> Some of the derivatives and extensions could do things that other   
    MP> versions of DOS that were out at the time could not do natively, like   
    MP> multitasking.   
      
   True. Also, the presence of the "PIP" command, among others, in CP/M traces   
   its inspiration back to at least OS/8 on the PDP-8, first released in 1971.   
      
   Jeff.   
      
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