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=0.6 required=5.0 tests=BAYES_00,TO_NO_BRKTS_FROM_MSSP autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,fe7b178ffa3708a X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2003-10-09 09:56:19 PST Path: archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-06!sn-xit-09!supernews.com!news.maxwell.syr.edu!newsfeed.mathworks.com!nycmny1-snh1.gtei.net!cambridge1-snf1.gtei.net!news.gtei.net!bos-service1.ext.raytheon.com!dfw-service2.ext.raytheon.com.POSTED!not-for-mail Message-ID: <3F859331.AD61B137@raytheon.com> From: Jerry Petrey <"jdpetrey"@raytheon.com> X-Mailer: Mozilla 4.79 [en]C-CCK-MCD CSC;Raytheon (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: Omission in the Ada Standard References: <657ea3e3.0309260810.4b6682d2@posting.google.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Thu, 09 Oct 2003 09:56:17 -0700 NNTP-Posting-Host: 147.24.201.186 X-Complaints-To: news@ext.ray.com X-Trace: dfw-service2.ext.raytheon.com 1065718578 147.24.201.186 (Thu, 09 Oct 2003 11:56:18 CDT) NNTP-Posting-Date: Thu, 09 Oct 2003 11:56:18 CDT Organization: Raytheon Company Xref: archiver1.google.com comp.lang.ada:544 Date: 2003-10-09T09:56:17-07:00 List-Id: Keith Thompson wrote: > "Jeff C," writes: > [...] > > Note again that no language I know of has the predefined ability to > > talk to ports as part of the language definition.. > > Ada 83 had: > > package LOW_LEVEL_IO is > -- declarations of the possible types for DEVICE and DATA; > -- declarations of overloaded procedures for these types: > procedure SEND_CONTROL (DEVICE : device_type; DATA : in out data_type); > procedure RECEIVE_CONTROL (DEVICE : device_type; DATA : in out data_type); > end; > > I don't know whether anybody actually implemented it, and it was > dropped in Ada 95 (it's not just obsolescent, there's no reference to > it at all). > > -- > Keith Thompson (The_Other_Keith) kst@cts.com > DDCI implemented Low_Level_IO for their 80x86 cross compiler. We used it on a project I just finished working on. Jerry -- --------------------------------------------------------------------------------- -- Jerry Petrey -- Senior Principal Systems Engineer - Navigation (GPS/INS), Guidance, & Control -- Raytheon Missile Systems - Member Team Ada & Team Forth -- NOTE: please remove in email address to reply ---------------------------------------------------------------------------------