Int 2F Fn AB07  - Srsoft Modal Pc V2+ - Set A Common Variable Or Semaphor  [-]

   AX = AB07h
   BX = offset of variable or semaphore in common memory
   CX = variable/semaphore size in bytes
   DS:DX -> buffer containing variable or semaphore

Return: AX = 5253h ('SR' byte-swapped) if installed
   CF clear if successful
   CF set on error

See Also: AX=AB00h"MODAL",AX=AB04h,AX=AB05h,AX=AB06h