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Int 21 Fn 15 - DOS 1+ - Sequential Write To Fcb File [D]
AH = 15h
DS:DX -> opened FCB (see AH=0Fh)
[DTA] = record to write
Return: AL = status
00h successful
01h disk full
02h segment wrap in DTA
Notes: writes a record of the size specified in the FCB beginning at the
current file position, then updates the current block and current
record fields in the FCB
if less than a full sector is written, the data is placed in a DOS
buffer to be written out at a later time
not supported by MS Windows 3.0 DOSX.EXE DOS extender
See Also: AH=0Fh,AH=14h,AH=1Ah,AH=40h,INT 2F/AX=1109h
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