Format of Compaq product information:
Address		Size	Description	)
 F000h:FFE4h	BYTE	product family code (first byte)
 F000h:FFE5h	BYTE	Point release number
 F000h:FFE6h	BYTE	ROM version code
 F000h:FFE7h	BYTE	product family code (second byte)
 F000h:FFE8h	WORD	BIOS type code
SeeAlso: #00518,#00520