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=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,bcdac28207102750 X-Google-Attributes: gid103376,public From: "David C. Hoos, Sr." Subject: Re: Ada95 speed Date: 1999/06/04 Message-ID: <7j9g6f$ies@hobbes.crc.com>#1/1 X-Deja-AN: 485816266 References: <374182F2.B10AD449@Maths.UniNe.CH> <3741aa37.3892645@news.pacbell.net> <3741B203.4890880B@Maths.UniNe.CH> <7ht4ss$4mu$1@nnrp1.deja.com> <3743D5BB.37152F94@gte.net> <310519991456230875%hopperj@macconnect.com> <3753DA33.F2E088A0@gte.net> <7j26ph$8c8$1@nnrp1.deja.com> <37582CA5.987F1E85@gte.net> Organization: Coleman Research Corporation X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3612.1700 Newsgroups: comp.lang.ada Date: 1999-06-04T00:00:00+00:00 List-Id: Clifford J. Nelson wrote in message <37582CA5.987F1E85@gte.net>... > > >Robert Dewar wrote: > >> In article <3753DA33.F2E088A0@gte.net>, >> cnelson9@gte.net wrote: >> >> > It took a few micro seconds to display the >> > result of the computations. >> >> No, that's obviously wrong, presumably this is a misprint >> for milliseconds (remember that the scan speed of typical >> displays of the period was 30-60Hz) >> >> Sent via Deja.com http://www.deja.com/ >> Share what you know. Learn what you don't. > >It it right. It took a few micro seconds while the video mapped memory >pointer was updated. Am I the only one who remembers this stuff? > Well, I guess it depends on what is meant by "display." Even if the memory pointer were instantaneously updated, the display would have taken 16.67 milliseconds to scan the video memory to render it visible. Furthermore, all that aside, those machines were typically only capable of running one process -- i.e., no multitasking, and hence could allow a program full access to the hardware. Today's operating systems must manage resource sharing, etc., so we're not really comparing like with like here.