Category: <b>expansion bus BIOSes</b>
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<pre><b>INT 15 - EISA SYSTEM ROM - READ FUNCTION CONFIGURATION INFORMATION</b>

	AX = D801h
	CH = function number to read
	CL = slot number (including embedded and virtual)
	DS:SI -&gt; 320-byte buffer for standard configuration data block
Return: CF clear if successful
	    AH = 00h
	    DS:SI buffer filled
	CF set on error
	    AH = error code (80h-83h,86h,87h) (see <a href=../../it/39/5.html>#00539</a>)
	BX destroyed
Note:	call with AL=81h if using 32-bit CS addressing mode instead of 16-bit
	this function is also supported by the Compaq SystemPro 486, but it
	  uses more than 1297 bytes of stack.
BUG:	some implementations appear to destroy the DF direction flag;
	  the Novell DOS 7+ memory managers explicitly clear it afterwards.
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