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TR B - Tape Read--Optronics (Biozentrum, Basel)

(TR BM Tape Read--Optronics (Biozentrum, Basel)+ Mirror TR BM)
(12/18/89)

PURPOSE

READING TAPES IN OPTRONICS FORMAT: Unfortunately, there are two different versions of Optronics tapes: 1. The first version is generated on tape from the "Max-Planck-Institut fuer Experimentelle Medizin", Goettingen. 2. The second version occurs on tapes from the "Biozentrum", Basel. The main differences are: | MPI, Goettingen | Biozentrum, Basel
Length of header record|      54 bytes        | same as data records
-----------------------|----------------------|---------------------;
Header information     | as described in paper|         ?
-----------------------|----------------------|---------------------;
Offset in data records |       6 bytes        |       4 bytes
-----------------------|----------------------|---------------------;

          Before reading tapes written in Optronics format, the user
          must know which of the formats, described above, that the
          tapes are written in.



          'TR O'--Read Optronics tapes, MPI Goettingen format.
                  [Using 'TR O', the file information (NSAM,NROW) is
                  taken from the tape file header.  Be sure that
                  this information is correct!]

          'TR OC'--Read Optronics tapes, MPI Goettingen format, and
                  check the tape file dimensions.
                  [Needs a considerable amount of time--about twice
                  that of 'TR O'.]

          'TR OM'--Read Optronics tapes, MPI Goettingen format, and
                  store a mirrored version of the tape file in the
                  output file.
                  [According to the scanning of the film, it might
                  be necessary to create the mirrored version of the
                  tape file.]
          'TR OCM'--Read Optronics tapes, MPI Goettingen format,
                  check the tape file dimensions, and store the 
                  mirrored version of the tape file in the output file.

          'TR B'--Read Optronics tapes, Biozentrum Basel format.
                  ['TR BM' is allowed;  'TR BC' would not make sense
                  because the tape file dimensions are already
                  checked using 'TR B'.]


NOTES:    1.  NSAM must be less than or equal to 512.

          2.  The further usage is as described under 'TR'.


Subroutines: 
Caller:      TAPE1

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