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=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 109fba,e1a91c4d90acda97 X-Google-Attributes: gid109fba,public X-Google-Thread: 103376,e1a91c4d90acda97 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-01-19 08:05:14 PST Path: supernews.google.com!sn-xit-02!sn-xit-01!supernews.com!feeder.qis.net!news-peer.gip.net!news.gsl.net!gip.net!newshub2.rdc1.sfba.home.com!news.home.com!news1.rdc1.il.home.com.POSTED!not-for-mail From: "Phil Staite" Newsgroups: comp.lang.ada,comp.lang.c++ References: <945eeq$vmk$1@nnrp1.deja.com> <3A664EC4.6F679BE0@acm.org> <6Hu96.4848$rw.42689@e420r-atl2.usenetserver.com> <3A66AC63.74ECBADB@ix.netcom.com> <9495km$7e1@news.kvaerner.com> Subject: Re: Safety-Critical Systems Developed Using C++ X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.00.2919.6600 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 Message-ID: <_AZ96.18067$P5.1409253@news1.rdc1.il.home.com> Date: Fri, 19 Jan 2001 16:05:14 GMT NNTP-Posting-Host: 24.178.211.46 X-Complaints-To: abuse@home.net X-Trace: news1.rdc1.il.home.com 979920314 24.178.211.46 (Fri, 19 Jan 2001 08:05:14 PST) NNTP-Posting-Date: Fri, 19 Jan 2001 08:05:14 PST Organization: Excite@Home - The Leader in Broadband http://home.com/faster Xref: supernews.google.com comp.lang.ada:4213 comp.lang.c++:40695 Date: 2001-01-19T16:05:14+00:00 List-Id: I'm sure it is C++, since I was part of the teams that recoded the SLIC kernel below the MI as they call it. Our little sub-team alone had over 140K SLOC. Above the MI, in the part of OS/400 called XPF it may very well be a combination of Modula, C++, etc. (I never got that far "up" in the OS) The AS/400 has always had a "machine interface" layer with an abstract high-level instruction set. (way ahead of NT's HAL IMHO) However, SLIC is anything but a microkernel -- its huge, robust, and full featured. The AS/400 came out in 1987, and the SLIC rewrite was well underway by 92 when I joined it.