Date: Thu, 9 Aug 2001 12:45:22 -0500 (CDT) From: David Scheidt <dscheidt@enteract.com> To: Dag-Erling Smorgrav <des@ofug.org> Cc: Mike Meyer <mwm@mired.org>, Greg Lehey <grog@FreeBSD.ORG>, <tlambert2@mindspring.com>, j mckitrick <jcm@FreeBSD-uk.eu.org>, <freebsd-chat@FreeBSD.ORG> Subject: Re: How did the MSFT monopoly start? Message-ID: <Pine.BSF.4.32L2.0108091238510.70995-100000@shell-2.enteract.com> In-Reply-To: <xzpelql4ms3.fsf@flood.ping.uio.no>
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On 9 Aug 2001, Dag-Erling Smorgrav wrote: :Mike Meyer <mwm@mired.org> writes: :> [...] The :> address space was 32 bits - the top 8 got thrown away when you left :> the CPU - and it didn't have special registers for addressing, so the :> general registers had to be 32 bits wide and it had to have those 32 :> bit operations. : :AFAIK, the 68k has separate data and address registers (d0-d7 and :a0-a7 respectively) You can use them all as general purpose registers. There might be some restrictions, but I can't remember any. It's been quite a while though. Of course, an OS will place restrictions on what registers you can use. Why does 68040 still scream "Oh, fast!" to me, and 1.4 GHz Athlon make me go "So?" -- dscheidt@tumbolia.com Bipedalism is only a fad. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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