INT 15 - TopView - "PAUSE" - GIVE UP CPU TIME
        AX = 1000h
Return: after other processes run
Note:   under DESQview, if the process issuing this call has hooked INT 08h,
          the current time-slice is set to expire at the next clock tick rather
          than immediately
SeeAlso: AX=5305h,INT 21/AH=89h,INT 21/AH=EEh"DoubleDOS" INT 7F/AH=E8