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June 23, 2010 T13/2132-D Revision 3
Working Draft Enhanced Disk Drive - 4 (EDD-4) 37
8.9 Write Buffer (FN 0Fh)
This function shall be used to write 512 bytes of data to the specified device's buffer.
Entry
AH 0Fh
DL BIOS device number
ES:BX Pointer to source buffer in memory
Exit
Carry Clear Function completed without error
AH Shall be cleared to zero
Carry Set Function completed with an error
AH Shall be set to the error code