TID: Mystic BBS 1.12 A46   
   MSGID: 1:387/26 10ad67fd   
   REPLY: 1:229/426 979951B9   
   TZUTC: -0500   
   On 30 Jun 2021, Stan Hosdar said the following...   
    SH> JT> need an OS, such as RSX-11   
    SH> what OS did a pdp-11 run? in particular what OS did cpm (and dos, etc)   
    SH> emulate with it's .com, .exe and other similar command lines?   
      
   I don't know that the extensions are going to match up quite the same   
   (especially since the difference between a .COM and a .EXE has to do with the   
   8086's segmented memory architecture, which the PDP-11 did not have).   
      
   However, there were may OSs available for the PDP-11. RSX-11 is CP/M-like,   
   the most notable shared command being PIP.   
      
   The PiDP-11 comes with a bunch of operating systems already set up (see   
   https://obsolescence.wixsite.com/obsolescence/pidp-11-building-instructions   
   in the "Prepare your Pi" section). It has disk images and configuration for   
   several OSs. I think after you unzip the archive, the are in the systems/   
   folder.   
      
   The PiDP-11 allows selection of an OS at boot-time via particular combinations   
   of panel switches, and uses a customized version of SIMH to interact with the   
   front panel. However, it all works without the front panel, too.   
      
   Jeff.   
      
   "For every complex problem there is an answer that is clear, simple, and   
   wrong." -- H. L. Mencken, who indeed was a racist thereby proving himself   
   right.   
   --- Mystic BBS v1.12 A46 2020/08/26 (Raspberry Pi/32)   
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