bank_labl

                          LABL      Label Bank
                          ======================
 
    Contact:  P. Wittich, Penn
 
    Revision History:-
    ================
 
    3.02  P. Wittich    First version

    Warning:  This bank is still under development.
    ===============================================


 
Description
-----------

    Holds data relevant to the tape label
 
Reference Links
---------------
 
    None.
 
Structural Links
----------------
 
    None.
 
Status Bits
-----------
 
Note: Any status bit parameters are defined to work with bit functions such as
      IAND and BTEST.
 
Data Words
----------
 
    Data types: B(bit), I, F, D(double), H(hollerith 4 char)
 
  Wd Typ  Mnem.          Description

          KLABL_

  +1  I   FLAG           flag, see notes below
  +2  H   TYPE		 type of tape, see notes below
  +3  H   SEQUENCE_NUM   which number in the sequence of tapes, see below.
 

Notes
-----
  (From a note by Paul Keener outlining the proposed label format,
  based on version 1.4 of the document.)

  This note describes a proposal for labeling tapes both physically and
  logically.

  There are twelve sets of tapes that must be produced.  There is
  the archive tape produced by the DAQ and one copy for each
  institution: Site, Queens, Guelph, Laurentian, UBC, Brookhaven,
  Penn, Los Alamos, UW, LBL and Oxford (and as a very special case,
  the underground DAQ tape set).  There will be at least a set of
  tapes that contain the full data stream.  It is forseen, however,
  that not every institute will request such a tape set.  We leave
  open the possibility of having multiple sets of tapes produced on
  site for distribution to the institutes, but it expected that
  there will be at most one such set initially.

  The proposed physical label format is IITTNNNN, where II is a two
  letter code for the institute, TT is a two letter code for the
  type of tape (eg, full data vs summary data), and NNNN is a four
  digit sequence number.  The sequence number would increment and
  would be unique for each IITT combination.  Example physical
  labels are "STFD0021", which would be Full Data tape number 21
  for site, and "UPFD0021", which would be Full Data tape number 21
  for Penn.  Note that the contents of tapes with different IIs,
  but the same TTs, would be the same, except for the logical label
  as noted below, and TTs controled off site.

  Institutes would be encouraged to use this format for tapes
  produced at their institutes but a certain set of tape types
  would be reserved for distribution tapes produces on site.

  The label would be placed at both the beginning and at the end
  of every tape produced for distribution on site.  The flag would
  be used to indicate whether this is the beginning label or the
  ending label.  The four character institute/tape type field is
  same as the IITT in the physical label and the four character
  sequence number is the same as the NNNN in the physical label.

  Institutes would be required to use this logical labeling format.
  This requirement comes from the fact that snoman needs to be able
  to identify the end of data on the tape reliably.  

  The proposed flags are
	value	meaning
	-----	-------
	    1	start of tape label
	    2	end of tape label

  The proposed II institute codes are

      code	Institute
      ----	---------
	UG	Underground
	AR	Archive
	ST	Site
	QU	Queens
	GU	Guelph
	LU	Laurentian
	UB	UBC
	BN	Brookhaven
	UP	Penn
	LA	Los Alamos
	UW	UW
	LB	LBL
	OX	Oxford

  The proposed TT tape type codes reserved for site production use are

	code	"meaning"
	----	---------
	FD	Full Data
	S*	Summary Data  (ie, we are reserving all codes
                               beginning with "S")
	UG	Underground DAQ Data