Format of XBIOS Command Block:
Offset	Size	Description	)
 00h	BYTE	function
		0Eh Get XBIOS Configuration Information
		    Return: buffer points to Ontrackr_Ref_Data structure
			(see #00298)
 01h	BYTE	reserved (must be zero before function call)
 02h	DWORD	buffer pointer - Input or output depending on opcode
SeeAlso: #00298,#00299