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Article #618466Re: S/360 addressing, not Honeywell 200
From: J. Clarke
Date: Sat, 03 Feb 2018 16:17
Date: Sat, 03 Feb 2018 16:17
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2647 bytes
On Mon, 29 Jan 2018 13:08:07 -0800 (PST), hanc...@bbs.cpcn.com wrote: >On Saturday, January 27, 2018 at 6:02:52 PM UTC-5, John Levine wrote: > >[snip] > >> From my recollection of the discussion of the 360 design in the 1964 >> IBM System Journal, they correctly observed that this would make code >> smaller than direct or indirect addressing. But they also claimed it >> would make programs position independent, which was rather >> overoptimistic. It's true, the code itself is position independent if >> you follow some common conventions, but real programs all have >> pointers stored in memory, which have to be relocated if the program >> moves. > >IIRC my S/360-DOS days, our application programs were called >"relocatable". That meant, at execution time, they could be loaded >anyway in the machine (but then, stayed static at that location for >the duration of the job). > >When we got dumps, we had to had the physical load address to >the error location to get the actual location in the dump. > >Later on, the product Abend-Aid did all that automatically, plus >provide additional information quickly speeding dump resolution. Just a note, but Abend-Aid is third party. And now you can use it from the Eclipse IDE running on a PC. >
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X-Received: by 10.55.74.210 with SMTP id x201mr30674688qka.29.1517674643693; Sat, 03 Feb 2018 08:17:23 -0800 (PST) X-BeenThere: alt.folklore.computers@googlegroups.com Received: by 10.55.102.203 with SMTP id a194ls1874447qkc.6.gmail; Sat, 03 Feb 2018 08:17:22 -0800 (PST) X-Received: by 10.55.163.207 with SMTP id m198mr28585353qke.45.1517674642872; Sat, 03 Feb 2018 08:17:22 -0800 (PST) Path: mbox-mo1.pugleaf.net!e39ni2034qtk.1!nntp.google.com!peer01.iad!feed-me.highwinds-media.com!news.highwinds-media.com!post01.iad!fx21.iad.POSTED!not-for-mail From: J. Clarke <jclarke...@gmail.com> Newsgroups: alt.folklore.computers Subject: Re: S/360 addressing, not Honeywell 200 Message-ID: <23ob7d17gghgsh68rinne0ent4lvi0cmq4@4ax.com> References: <65g3r9$8gg@bgtnsc03.worldnet.att.net> <p4cn29$fhm$1@dont-email.me> <p4d45k$f8e$1@dont-email.me> <b204534e-f56c-4b29-a177-dd66c2410b6d@googlegroups.com> <p4j0er$2im8$1@gal.iecc.com> <2e84c3ac-e42b-402f-9ada-ea27def62610@googlegroups.com> User-Agent: ForteAgent/8.00.32.1272 MIME-Version: 1.0 Lines: 29 X-Complaints-To: ab...@newsdemon.com NNTP-Posting-Date: Sat, 03 Feb 2018 16:17:22 UTC Organization: http://www.NewsDemon.com Bytes: 2038 Date: Sat, 03 Feb 2018 11:17:22 -0500 X-Received-Bytes: 2100 X-Received-Body-CRC: 1159658156 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit