Category: <b>vendor-specific BIOS extensions</b>
<p>
<pre><b>INT 17 - Enhanced Parallel Port (EPP) BIOS - INSTALLATION CHECK</b>

	AX = 0200h
	BX = 5050h ('PP')
	CH = 45h   ('E')
	DX = printer port number (00h-02h)
Return: AH = status
	    00h if installed and port is an enhanced parallel port
		CX:AL = installed BIOS type
		    5050h:45h ('PPE') if EPP v3.0+ BIOS installed
		    4550h:50h ('EPP') if EPP v1.0 BIOS installed
		---EPP 1.0, 3.0---
		DX:BX -&gt; far entry point to Advanced BIOS (see <a href=../../it/32/6.html>#00632</a>)
		---EPP Revision 7---
		DX = EPP I/O base address
		ES:BX -&gt; far entry point to EPP BIOS (see <a href=../../it/32/6.html>#00632</a>,<a href=../../it/33/6.html>#00633</a>)
	    03h if installed but specified port not supported
		CF set
Program: The Enhanced Parallel Port BIOS provides support for parallel
	  port peripherals using the enhanced modes of the IEEE 1284.
SeeAlso: AH=E0h,MEM 0040h:0008h,MEM 0040h:00DCh

</pre>