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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Ada platforms and pricing, was: Re: a new language,
 designed for safety !
Date: Mon, 23 Jun 2014 15:08:47 -0500
Organization: Jacob Sparre Andersen Research & Innovation
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Xref: news.eternal-september.org comp.lang.ada:20563
Date: 2014-06-23T15:08:47-05:00
List-Id: <comp.lang.ada>

"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:1vrc8mmlbvd6f$.1vak7oiubwsaj$.dlg@40tude.net...
> On Sun, 22 Jun 2014 18:38:50 -0500, Randy Brukardt wrote:
>
>> I'm not talking about "peripherals"; I'm talking about timers and trap
>> handlers (for overflow, divide-by-zero, etc.) and the like. These things 
>> are
>> required for a useful subset of Ada. (No clock and no exceptions means
>> you're no longer really doing Ada, just Ada syntax.) I/O is optional, but
>> not these other things.
>
> You are right. But how a board could be of any use without some peripheral
> I/O? Especially when file I/O and networking has already been ruled out!
> Deaf-mute chunk of silicon...

Right, but I was thinking of the rather elaborate language-defined I/O 
facilities. I doubt that there is much use for Ada.Directories on the 
typical embedded board. You need some sort of low-level facilities tailored 
for the devices, it often makes as much sense for the programmer to provide 
those as the compiler vendor. Perhaps some package of very low-level 
facilities would help (hopefully one that could be per-CPU architecture as 
opposed to per-board), but that's it and that would not have much to do with 
Ada per-se.

                                    Randy.