The cleaned up copy of the original tape image is decus-5-11.pt.
The portion of the tape that is in PARITY format is in utils.pt.

The loader for PARITY format is the first part of the original 
tape image, and is in RIM format.  An annotated disassembly of 
this loader is in loader.{pal,lst,rim}.

The utilities that were provied in PARITY format are also 
disassembled in utils.{pal,lst,bin}.  The Perl script parity2pal
was used to generate these.

    Vince