Int 15 Fn D822  - Compaq Eisa System ROM 04/08/93 - Get ???                [b]

   AX = D822h
   BL = 00h
   CX = size of buffer or 0000h to retrieve required buffer size
   DS:SI -> buffer for ??? (if CX nonzero)

Return: CF clear if successful
       AH = 00h
       DH = 08h
       CX = required buffer size to retrieve all data (if CX=0 on entry)
       DS:SI buffer filled (if CX nonzero on entry)
   CF set on error (BL nonzero)
       AH = 86h