X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 13 - fixed disk

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INT 13 - FIXED DISK - WRITE SECTOR BUFFER (XT,PS)
        AH = 0Fh
        ES:BX -> buffer
Return: CF set on error
        AH = status code (see AH=01h)
Notes:  should be called before formatting to initialize the controller's
          sector buffer.
        used for diagnostics only on PS/2 systems
SeeAlso: AH=0Bh

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