Int 2F Fn 1224  U - DOS 3+ Internal - Sharing Retry Delay                  [D]

   AX = 1224h
   SS = DOS DS (must be using a DOS internal stack)

Return: after delay set by INT 21/AX=440Bh, unless in server call
     (INT 21/AX=5D00h)

Note:  delay is dependent on the processor speed, and is skipped entirely if
     inside a server call

See Also: INT 21/AX=440Bh,INT 21/AH=52h,INT 62/AX=0097h