From 16 bit to 32

[Scott Loyd <loyd.scott@gmail.com>]

Hi all, 
This is probably a silly question but I have to ask. I have a large legacy application written primarily in Ada with some machine code for interfacing with an old 16 bit 1750A processor. I would like to take this code and execute it on 32 bit linux. I know that the machine code must be replaced. My question is for references to address types in the Ada code, is there a way to get around manually fixing all the record layout specifications and the like using a compiler configuration or pragma or (other)? Can I save a little work or do I need to brute force recode everything?

type A is record
   Address : System.Address;
end record;

for type A use record
   -- Change this???
   --Address at 0 range 0..15;
   Address at 0 range 0..31
end record;