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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Examining individual bytes of an integer
Date: Wed, 17 Oct 2018 17:01:06 -0500
Organization: JSA Research & Innovation
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Xref: reader02.eternal-september.org comp.lang.ada:54620
Date: 2018-10-17T17:01:06-05:00
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"Niklas Holsti" <niklas.holsti@tidorum.invalid> wrote in message 
news:g2o4gbF44ejU1@mid.individual.net...
> On 18-10-17 01:33 , Randy Brukardt wrote:
>
>> ... Given that pretty much no one should be using 'Address anyway,
>
> Anyone doing HW interfacing with DMA I/O has to use 'Address, because 
> that's what is programmed into the DMA channel. And that is quite common 
> in embedded Ada programs that do not use an operating system for I/O.
>
> I guess current users of Janus/Ada on MS Windows don't make such programs.

The *reason* to use 'Address and address clauses is to interface with 
hardware. That's fine, but there aren't that many people writing such 
interfaces. "No one" is a bit much, perhaps, but it should be way below 5%. 
(If it isn't, that says Ada is way under-utilized.)

In any case, indexing always gets the right answer with the possible 
exception of packed arrays. So there's not a lot of need or value to 
following that Implementation Advice.

                                                   Randy.