Date: Thu, 9 Aug 2001 12:48:55 +0930 From: Greg Lehey <grog@FreeBSD.org> To: Brett Glass <brett@lariat.org> Cc: Neill Robins <freebsd@nc.rr.com>, tlambert2@mindspring.com, j mckitrick <jcm@FreeBSD-uk.eu.org>, freebsd-chat@FreeBSD.ORG Subject: Re: How did the MSFT monopoly start? Message-ID: <20010809124854.H73579@wantadilla.lemis.com> In-Reply-To: <4.3.2.7.2.20010808143704.053c8c10@localhost>; from brett@lariat.org on Wed, Aug 08, 2001 at 02:39:05PM -0600 References: <20010808153229.L78395@wantadilla.lemis.com> <20010806142544.A64348@dogma.freebsd-uk.eu.org> <15214.52633.581653.632317@guru.mired.org> <3B6F98D0.A3C22CC9@mindspring.com> <4.3.2.7.2.20010807150857.0483dd20@localhost> <20010808153229.L78395@wantadilla.lemis.com> <37466058997.20010808070756@nc.rr.com> <4.3.2.7.2.20010808143704.053c8c10@localhost>
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On Wednesday, 8 August 2001 at 14:39:05 -0600, Brett Glass wrote: > At 05:07 AM 8/8/2001, Neill Robins wrote: > >> GL> Note that the reboot sequence for CP/M was simply ^C. "Inventing" >> GL> Ctrl-Alt-Del was simply a matter of finding a new mapping for the >> GL> function. >> >> GL> Greg >> >> David Bradley teaches in the Electrical and Computer Engineering >> department at my university now and makes it a point that >> everybody knows the above statement. ( http://www.ece.ncsu.edu ) > > Of course, CP/M was so incredibly simple that the "reboot" (such > as it was) took only a fraction of a second. Depends on your configuration. The standard CP/M boot loaded the first two sectors from disk. Since by default they were 6-way interleaved, that took 6 passes of each track, for a total of 2 seconds, 2.167 if you missed the first sector after positioning. > Also, IIRC, only PART of CP/M was reloaded by that "warm" boot. By default, it reloaded the entire "OS". But you're right, there was some difference. I think it depended where you performed the boot. From CCP it was the complete OS, I think. Greg -- See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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