INT 13H 0bH: Write Sector Plus ECC

                                                                   [XT] [AT]
 Expects: AH    0bH
          AL    sector count (usually 1)
          CH    track (cylinder) number (0-n) ◄═╗
          CL    sector number (1-n) ◄═══════════╩══ (see below)
          DL    drive: 80H-81H=hard disk 0-1
          DH    head number
          ES:BX caller's buffer address
 Returns: AH    BIOS disk error code if CF is set to CY
    Info: This works just like the standard Write (INT 13H 03H), except
          instead of allowing the controller to calculate the ECC, it uses
          the four to seven bytes that follow the data at ES:BX.

       CX Bits 6-7 of CL are the high two bits of the 10-bit value whose
          low 8 bits are in CH.  See INT 13H 02H for details.

   Notes: ■ This is typically used only by diagnostic software.

          ■ On a multiple-sector operation, this returns without finishing
            the write when it encounters an error.

See Also: INT 13H: BIOS Disk I/O
          BIOS Data Area
          ROM-BIOS Functions