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=-0.8 required=5.0 tests=BAYES_00,INVALID_DATE autolearn=no autolearn_force=no version=3.4.4 Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.BERKELEY.EDU Path: utzoo!watmath!clyde!burl!ulysses!ucbvax!JPL-VLSI.ARPA!larry From: larry@JPL-VLSI.ARPA Newsgroups: net.lang.ada Subject: Alsys question + CAIS comment Message-ID: <8606250240.AA04395@ucbvax.Berkeley.EDU> Date: Tue, 24-Jun-86 21:28:36 EDT Article-I.D.: ucbvax.8606250240.AA04395 Posted: Tue Jun 24 21:28:36 1986 Date-Received: Thu, 26-Jun-86 04:15:22 EDT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet List-Id: One group I'm helping has an Alsys Ada compiler for the AT and needs to import math and other routines. Has anyone solved this problem already? If so, we'd appreciate whatever help you can give (even copies of sample code without explanation would be helpful). ========================================================================== Several people have (rightly) taken me to task for suggesting a requirement for the Space Station SW Development Environment of "an operating system easily updated to the CAIS." Of course, that has to be restated in more specific terms, and in such a way that compliance can be measured. However, I doubt if any input to the Space Station management would have any effect. They seem to be firmly committed to IBM mainframes running MVS. It's what they've used with much success in the past, and people in the space program are (contrary to popular expectation) extremely conservative. Further, there are some very rational reasons for wanting IBM hardware and MVS operating system. Most of their people are expert in their use and won't require expensive, time-consuming re-training with all the attendant chances for catastrophe before becoming expert; a whole suite of SW-engineering tools are available from the shuttle program; and they don't have to worry about the vendor going out of business. Actually, I suspect the probability of many people ever using the CAIS is pretty small. The CAIS has a competitor that's already won the de facto status of an industry-wide standard, being used by 70-80% of all programmers in the U.S. And its supported by a vendor which stands to lose billions of dollars each year if an operating system standard is chosen that makes it easy to port SW to other vendors hardware. No, it isn't Unix and AT&T (which many supporters of the CAIS seem to consider their bete noire, judging from all the argument against it I hear). Its MVS and IBM. Larry @ jpl-vlsi.ARPA