Int 4B Fn 01  - Ti Professional Pc - Parallel Port - Initialize Printer    [b]

   AH = 01h
   DL = printer number (00h)

Return: AH = printer status (see #2887)

Note:  on the TI Pro, the BIOS only supports DL=00h; MS-DOS versions for the
     TI hook INT 4B and handle requests for DL<>00h

See Also: AH=00h,AH=02h,INT 17/AH=01h