Date: Wed, 1 Sep 1999 20:41:30 -0400 (EDT) From: Chuck Robey <chuckr@picnic.mat.net> To: Joerg Czeranski <jc@joerch.org> Cc: obrien@NUXI.com, freebsd-alpha@FreeBSD.ORG Subject: Re: relative alpha speed Message-ID: <Pine.BSF.4.10.9909012039340.366-100000@picnic.mat.net> In-Reply-To: <5yqaTz5zL$4fQ$1@joerch.org>
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On Wed, 1 Sep 1999, Joerg Czeranski wrote: > David O'Brien wrote: > > > PC164SX correctly set up (particularly, I am not certain about the way I > > > have my RAM installed) > > > > I was reading in the NetBSD/Alpha lists that the PC164 board must have > > all of its memory slots filled to get the memory bandwidth of a 164LX. > > Can anyone here comment? (I might easily be blowing it out my ass WRT > > to the way I'm refering to things here) > > The PC164 (= AlphaPC 164) supports 128bit on the memory bus with four > of the PS/2 slots filled, and 256bit with all eight PS/2 slots filled. > > The 164SX (= PC164SX = AlphaPC 164SX) and the 164LX only have one > possible bus configuration regardless of the number of slots used. Yes, but page 1-3 of the manual, section 1.1.2, at the end of the paragraph refers to main memory as a 128 bit array. This makes me think that the PC164SX's memory is 128 bits wide. I'm using 72 bit wide PC100 SDRAMs, 64MB X 2. > > joerch > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-alpha" in the body of the message > ---------------------------+----------------------------------------------- Chuck Robey | Interests include any kind of voice or data chuckr@picnic.mat.net | communications topic, C programming, and Unix. 213 Lakeside Drive Apt T-1 | Greenbelt, MD 20770 | picnic.mat.net: FreeBSD/i386 (301) 220-2114 | jaunt.mat.net : FreeBSD/Alpha ---------------------------+----------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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