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<TITLE>Int 21/AX=4406h
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Int 21/AX=4406h - DOS 2+ - IOCTL - GET INPUT STATUS -
AX = 4406h
BX = file handle
Return: CF clear if successful
AL = input status
00h not ready (device) or at EOF (file)
FFh ready
AH may be destroyed (refer to note)
CF set on error
AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
Notes: files may not register as being at EOF if positioned there by AH=42h
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<h2>Int 21/AX=4406h
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<h3><font color=#C00040>DOS 2+ - IOCTL - GET INPUT STATUS</font></h3>
<PRE>
AX = 4406h
BX = file handle<br>
<p><b>Return:</b><br>CF clear if successful
AL = input status
00h not ready (device) or at EOF (file)
FFh ready
AH may be destroyed (refer to note)
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>
Files may not register as being at EOF if positioned there by AH=42h.
Under DOS 5.0, on a successful return, AH contains either the next
character which will be read or 1Ah if at EOF; under a Windows95
DOS box, AH seems to be either unchanged or 00h.
This function was not supported by Digital Research's DOS Plus
<p><b>BUG:</b>
The CLOCK$ device under DR DOS 3.41 always indicates 'Ready'; this was
corrected in v5.0
<p><b>See Also:</b>
<a href="rb-2889.htm" tppabs="http://www.ctyme.com/intr/rb-2889.htm">AX=4407h</a> - <a href="rb-4411.htm" tppabs="http://www.ctyme.com/intr/rb-4411.htm">INT 2F/AX=122Bh</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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