Bestdos2   AltairDOS 3.x -   1996. 
  AltairDOS 1.0 (c   BIOS). 
  CP/M 2.2,   : 
+ HD floppy ( 1700  ),   5121, 
   , , 
 ,   
(    ), 
     , 
   (+), 
    ,   (*.bat) 
 submit.com HO!       user0 
      drivr.sys. 