Category: <b>video</b>
<br>Flags: Undocumented function<p>
<pre><b>INT 15 - Toshiba laptops - VCHAD.EXE - INSTALLATION CHECK</b>

	AX = CCCCh
Return: AX = ABCDh if installed
Note:	supported by Toshiba VGA change display utility VCHAD.EXE ver 2.90+
	  older versions have the string "VCHAD" 2 bytes after the address of
	  the INT 15 handler which is hooked by all versions for the SysReq key
SeeAlso: AH=85h
</pre>