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AH = 28h CX = number of records to write DS:DX -> opened FCB (see #01345) Disk Transfer Area contains records to be written
Return:
AL = status 00h successful 01h disk full or file read-only 02h segment wrap in DTA CX = number of records written
Notes: Write begins at current file position as specified in FCB; the file position is updated after writing. If CX = 0000h on entry, no data is written; instead the file size is adjusted to be the same as the file position specified by the random record and record size fields of the FCB. If the data to be written is less than a disk sector, it is copied into a DOS disk buffer, to be written out to disk at a later time. Not supported by MS Windows 3.0 DOSX.EXE DOS extender
See Also: AH=22h - AH=27h - AH=40h - AH=59h/BX=0000h
Category: DOS Kernel - Int 21h - D
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