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<TITLE>Int 21/AX=4403h
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Int 21/AX=4403h - DOS 2+ - IOCTL - WRITE TO CHARACTER DEVICE CONTROL CHANNEL -
AX = 4403h
BX = file handle referencing character device
CX = number of bytes to write
DS:DX - data to write
Return: CF clear if successful
AX = number of bytes actually written
CF set on error
AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
Notes: format of data is driver-specific
(also see separate entries below for some specific cases)
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<h2>Int 21/AX=4403h
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<h3><font color=#C00040>DOS 2+ - IOCTL - WRITE TO CHARACTER DEVICE CONTROL CHANNEL</font></h3>
<PRE>
AX = 4403h
BX = file handle referencing character device
CX = number of bytes to write
DS:DX -> data to write<br>
<p><b>Return:</b><br>CF clear if successful
AX = number of bytes actually written
CF set on error
AX = error code (01h,05h,06h,0Dh) <a href="javascript:if(confirm('http://www.ctyme.com/intr/rb-0000.htm \n\nThis file was not retrieved by Teleport Pro, because it was unavailable, or its retrieval was aborted, or the project was stopped too soon. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/intr/rb-0000.htm#Table0'" tppabs="http://www.ctyme.com/intr/rb-0000.htm#Table0"></a>(see #01680 at AH=59h/BX=0000h)
</PRE>
<p><b>Notes:</b>
Format of data is driver-specific
(also see separate entries below for some specific cases).
If the file handle refers to "4DOSSTAK", the 4DOS (v2.x-3.03)
KEYSTACK.SYS driver will push the specified characters on the
keyboard stack; similarly for "NDOSSTAK", the NDOS KEYSTACK.SYS
driver will push the characters onto the keyboard stack.
This function was not supported by Digital Research's DOS Plus
<p><b>See Also:</b>
<a href="rb-2820.htm" tppabs="http://www.ctyme.com/intr/rb-2820.htm">AX=4400h</a> - <a href="rb-2822.htm" tppabs="http://www.ctyme.com/intr/rb-2822.htm">AX=4402h"DOS 2+"</a> - <a href="rb-2881.htm" tppabs="http://www.ctyme.com/intr/rb-2881.htm">AX=4405h"DOS"</a> - <a href="rb-4411.htm" tppabs="http://www.ctyme.com/intr/rb-4411.htm">I
<p><b>See Also:</b>
<a href="rb-5529.htm" tppabs="http://www.ctyme.com/intr/rb-5529.htm">INT 2F/AX=D44Dh</a> - <a href="rb-5531.htm" tppabs="http://www.ctyme.com/intr/rb-5531.htm">INT 2F/AX=D44Fh</a>
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<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>
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