Int 2F Fn D201  U - Quarterdeck Rpci - Dvdos4gx.dvr - ???                  [E]

   AX = D201h
   BX = 4D45h ("ME")
   CX = 5155h ("QU")
   DX = 5044h ("PD")

Return: AL = FFh
   BX = 4F4Bh ("OK")

Notes: AH=D2h is the default; use the Quarterdeck installation check described
     under AX=D200h
   called by QEMM 6.03
   performs a variety of actions before setting return registers

See Also: AX=D200h