This program displays the version of DOS running on your computer.

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** Program: VERSION.Q	                                        **
** Purpose: Display current version of DOS on the video screen. **
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  OPTION INCLUDE = 'REGS.INC'       * Include contents of REGS.INC file 

  MOVE LOVALUES TO WST1-4           * Init wst area bytes 1 to 4 to x'00's
  MOVE X'30'    TO AH               * Move x'30' to AH register
  INT86 X'21'                       * Get DOS major.minor version number
  MOVE AL       TO WST1             * Move contents of AL reg to wst byte 1
  MOVE AH       TO WST3             * Move contents og AH reg to wst byte 3
  DISPLAY 'DOS VERSION IS: ' NOSKIP * Display "DOS VERSION" on screen
  DISPLAY WST1-2-I NOSKIP           * Display major version number
  DISPLAY '.' NOSKIP                * Display "." 
  DISPLAY WST3-4-I                  * Display minor version number 

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