Record Rep specs, endian: big -> little, Storage_Unit: 8 -> 16

[Vernon Brown <brownv@az.honeywell.com>]

I am porting a large avionics application from a big-endian processor,
AMD-29050, to a little endian processor, Intel-P5.  The compiler for the
29050 has a System.Storage_Unit of 8 bits, but the compiler I'm using
for the port to Intel has a Storage_Unit of 16 bits.

The application has many record rep specs that map onto external byte
streams of data.  Is there any chance that I can write rep specs that
will work in both environments, and if not, what rules could I apply
when modifying the rep specs?

An example record rep spec is:

 for Leg_Fault_Record_Type use record
   Time_First                      at 0 range 0 .. 15;
   Flight_Phase                    at 2 range 0 .. 7;
   System_Mode                     at 3 range 0 .. 7;
   Test_ID                         at 4 range 0 .. 7;
   Fault_ID                        at 5 range 0 .. 15;
   Fault_Type                      at 7 range 0 .. 7;
   Intermittent_Count              at 8 range 0 .. 7;
   Time_Recent                     at 9 range 0 .. 15;
   Isolation_Data                  at 11 range 0 .. 127;
   Detail_Data_Indicator           at 27 range 0 .. 7;
   Reserved                        at 28 range 0 .. 31;
 end record;

Please email me as well as posting to the news group, as my news reader
sometimes gets behind by 3 or 4 days.
-- 

Vernon Brown  X6-3057  email: brownv@AZ.Honeywell.com