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Int 21 Fn 10 - DOS 1+ - Close File Using Fcb [D]
AH = 10h
DS:DX -> File Control Block (see AH=0Fh)
Return: AL = status
00h successful
FFh failed
Notes: a successful close forces all disk buffers used by the file to be
written and the directory entry to be updated
not supported by MS Windows 3.0 DOSX.EXE DOS extender
See Also: AH=0Fh,AH=16h,AH=3Eh
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