INT 13H 0aH: Read Sector Plus ECC

                                                                   [XT] [AT]
 Expects: AH    0aH
          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
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 Returns: AH    BIOS disk error code if CF is set to CY
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    Info: This works just like the standard Read (INT 13H 02H), except that
          four to seven bytes of data (the ECC▲ or Error Correction Code
          bytes) follow the contents of the sector.

       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 read when it encounters an error.

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