Format of HP 95LX pattern match control block:
Offset	Size	Description	)
 00h 43 BYTEs	FindFirst data block (see #01626 at INT 21/AH=4Eh)
 2Bh 80 BYTEs	full path name
 7Bh	BYTE	offset of last component of filename
 7Ch	BYTE	DOS function number (4Eh or 4Fh)