To : Concept Group
From : Keith Ball
Date : December 1, 1982

Re :   Incompatibilities between the CCOS versions 1.0c and final 1.0d

       The January release will have certain systemic incompatibilities
with the current system.  Software developers, internal and external,
must be made aware of them.  Probably, for all cases, recompiling Pascal
and FORTRAN software using the new libraries and compilers will remove
any danger from the imcompatibles.

       The following is a preliminary list of changes to the system which
will have a compatibility impact on system and application software.

       1) The addition of double precision floating point data types to
          the Pascal compiler.  This feature is touted by SVS to be
          compatible with the FORTRAN double precision data type.


       2) The new display driver has window records which are 4 bytes
          longer than the old driver's window records.

       It is necessary to update this list and make it represent
accurately the impact the new release have on all software developers.
Therefore, please report in writing to me any other potential changes
that fall into this category.  The reports may be handwritten and need
be only a few lines.


CONCEPT GROUP DISTRIBUTION:

Keith Ball
Mary Boetcher
Michael Cook
Michael Earley
Brett Eastman
Lynn Franklin
Lee Frohman
Al Grueneich
Karl Lew
William Manning
Greg Schroeder
David Smith
Michael P Smith
Dan Torres
Robert M Wohnoutka