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: 103376,55958fd991db66fe X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2002-09-12 18:53:19 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news.tele.dk!small.news.tele.dk!130.133.1.3!fu-berlin.de!uni-berlin.de!pc-62-31-50-169-cr.blueyonder.co.UK!not-for-mail From: nickroberts@blueyonder.co.uk (Nick Roberts) Newsgroups: comp.lang.ada Subject: Re: Advantage of XML based GUI? (was Re: Ada-inspired OS/Language) Date: Fri, 13 Sep 2002 01:53:42 GMT Organization: AdaOS Message-ID: <3d81400c.1027894993@news.cis.dfn.de> References: <4519e058.0209101828.cb5ff85@posting.google.com> <3d7f9d3f.920665532@news.cis.dfn.de> <3d80b566.992395741@news.cis.dfn.de> NNTP-Posting-Host: pc-62-31-50-169-cr.blueyonder.co.uk (62.31.50.169) X-Trace: fu-berlin.de 1031881997 534214 62.31.50.169 (16 [25716]) X-Newsreader: Forte Free Agent 1.21/32.243 Xref: archiver1.google.com comp.lang.ada:28893 Date: 2002-09-13T01:53:42+00:00 List-Id: On 12 Sep 2002 11:23:11 -0600, Kilgallen@SpamCop.net (Larry Kilgallen) strongly typed: >In article <3d80b566.992395741@news.cis.dfn.de>, nickroberts@blueyonder.co.uk (Nick Roberts) writes: > >> Currently, I plan to write 'native' device drivers (in Ada) for AdaOS. I >> intend to go to the original hardware documentation wherever posisble, and >> write the drivers properly. I don't think it's unfair to suggest that most >> device drivers (even commercial ones) tend be of remarkably poor quality. >> >> Nevertheless, it would be really handy to provide compatibility layers that >> would allow existing device drivers to be used. At some stage, maybe we >> will have a go at this. > >Existing device drivers that follow what model ? Various and many. Maybe Linux. Maybe Windows. Probably a good plan would be to start with one that is relatively simple (but still works), and work towards the more sophisticated ones. >Certainly that is fundamental to the design of the "native" device >driver system. A device driver may require: port I/O; memory mapped I/O; interrupt handler installation (and communication); communication with higher levels of software. What else? The design of AdaOS is very flexible. I suspect most DD environments would fit into AdaOS with little difficulty. >Unless you design it from the start, for instance, >it would be difficult to deliver ASTs. What is an 'AST' in this context, please? -- Nick Roberts