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From: christoph.grein@eurocopter.com
Newsgroups: comp.lang.ada
Subject: Re: Enumeration representation clause surprise.
Date: Wed, 11 Jun 2008 05:30:35 -0700 (PDT)
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Date: 2008-06-11T05:30:35-07:00
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What you request for A1 seems impossible: Store value 2 = 2#01# in one
bit.

An illustrating example:

type My_Int is range 10_000 .. 10_001;

type My_Record is record
  I: My_Int;
end record;

for My_Record use record
  I at 0 range 0 .. 0;
end record;

This is allowed. My_Record holds only two values, so one bit is
enough. The compiler uses a so-called biased representation with
10_000 as bias, which need not be stored.

Hope this helps.