Get current drive parameters (XT,AT,XT286,conv,PS)

        Entry:
          AH = 08h
          DL = DRIVE NUMBER
        Return:
          CF set on error
          AH = status code (see AH=1 above)
          DL = number of consecutive acknowledging drives
          DH = maximum value for head number
          CL = maximum value fo sector number
          CH = maximum value for cylinder number