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oldlinux-files/docs/interrupts/int-html/rb-2599.htm
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<TITLE>Int 21/AH=22h
</TITLE>
<META NAME="Description" CONTENT="
Int 21/AH=22h - DOS 1+ - WRITE RANDOM RECORD TO FCB FILE -
AH = 22h
DS:DX - opened FCB (see #01345)
Disk Transfer Area contains record to be written
Return: AL = status
00h successful
01h disk full
02h segment wrap in DTA
Notes: the record is written to the current file position as specified by the
random record and record size fields of the FCB
the file position is not updated after writing the record
">
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<h2>Int 21/AH=22h
</h2>
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<h3><font color=#C00040>DOS 1+ - WRITE RANDOM RECORD TO FCB FILE</font></h3>
<PRE>
AH = 22h
DS:DX -> opened FCB <a href="rb-2574.htm#Table1345" tppabs="http://www.ctyme.com/intr/rb-2574.htm#Table1345">(see #01345)</a>
Disk Transfer Area contains record to be written<br>
<p><b>Return:</b><br>AL = status
00h successful
01h disk full
02h segment wrap in DTA
</PRE>
<p><b>Notes:</b>
The record is written to the current file position as specified by the
random record and record size fields of the FCB.
The file position is not updated after writing the record.
If the record is located beyond the end of the file, the file is
extended but the intervening data remains uninitialized.
If the record only partially fills a disk sector, it is copied to 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
<p><b>See Also:</b>
<a href="rb-2580.htm" tppabs="http://www.ctyme.com/intr/rb-2580.htm">AH=15h</a> - <a href="rb-2598.htm" tppabs="http://www.ctyme.com/intr/rb-2598.htm">AH=21h</a> - <a href="rb-2684.htm" tppabs="http://www.ctyme.com/intr/rb-2684.htm">AH=28h</a> - <a href="rb-2791.htm" tppabs="http://www.ctyme.com/intr/rb-2791.htm">AH=40h</a>
<p>
<b>Category: <a href="cat-010.htm" tppabs="http://www.ctyme.com/intr/cat-010.htm">
DOS Kernel</a>
- <a href="int-21.htm" tppabs="http://www.ctyme.com/intr/int-21.htm">
Int 21h</a>
- <a href="alpha-d.htm" tppabs="http://www.ctyme.com/intr/alpha-d.htm">
D</a>
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