Format of Card Services GetTupleData record:
Offset	Size	Description	)
 00h	WORD	logical socket
 02h	WORD	attributes
 04h	BYTE	code value of desired tuple
 05h	BYTE	offset into tuple from link byte
 06h	WORD	flags
 08h	DWORD	-> Link
 0Ch	DWORD	-> CIS
 10h	WORD	(call) maximum amount of data to return (0004h)
 12h	WORD	(ret) amount of data returned
 14h	DWORD	(ret) tuple data
SeeAlso: #00711