From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: border1.nntp.dca3.giganews.com!border2.nntp.dca3.giganews.com!border4.nntp.dca.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!usenet.blueworldhosting.com!feeder01.blueworldhosting.com!5.9.156.53.MISMATCH!rt.uk.eu.org!weretis.net!feeder4.news.weretis.net!news.teledata-fn.de!newsfeed.arcor.de!newsspool4.arcor-online.net!news.arcor.de.POSTED!not-for-mail Date: Mon, 08 Jul 2013 12:54:56 +0200 From: "G.B." User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:17.0) Gecko/20130620 Thunderbird/17.0.7 MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: Point a beginner in the right direction? Cheap bare-board to run with a RTOS for running ADA References: <8a3093bb-90b3-4081-9b0b-dfde5aa6b851@googlegroups.com> <993despcuk1d.1ifczvyo501px.dlg@40tude.net> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Message-ID: <51da9a80$0$6561$9b4e6d93@newsspool4.arcor-online.net> Organization: Arcor NNTP-Posting-Date: 08 Jul 2013 12:54:56 CEST NNTP-Posting-Host: 4d9f4a50.newsspool4.arcor-online.net X-Trace: DXC=65Wb9na2hM1gP]QSEBQ^d44IUK:Lh>_cHTX3j=FoM9gTIbXK= X-Complaints-To: usenet-abuse@arcor.de X-Original-Bytes: 2754 Xref: number.nntp.dca.giganews.com comp.lang.ada:182319 Date: 2013-07-08T12:54:56+02:00 List-Id: On 08.07.13 09:43, Dmitry A. Kazakov wrote: > Many years ago almost all I/O was done through dual ported memory. These > days are long behind. Maybe these days are long behind, yet not the hardware. > I only said that *modern* hardware is not so simple to access as in the > times when it was one or two memory-mapped hardware registers at fixed > addresses. Even a "small" SBC is far more complex than any old mainframe > was. Non-modern hardware is as cheap as a plastic spoon! Price is a convincing argument when the effect of the embedded system is simple. Say, a relay that previously had been triggered by more expensive analog hardware. If Ada vendors wish to loose all but the market for expensive high end systems, then that's their choice. Too bad. Because then, (1) Ada gets thrown out as soon as there is a sufficient replacement that's cheaper (C with static analysis, say) (2) normal people will never enjoy the benefits of Ada, if any, as they rarely fly modern aircraft, drive high end cars, or own/work in a high tech factory. But then, by the laws of popularity, recruitment and language choice will steer away (again!) from expensive, bulky Ada.