Date: Wed, 1 Sep 1999 20:14:35 -0400 From: "Gary McKinney" <gmckinney@megabits.net> To: <obrien@NUXI.com>, "Chuck Robey" <chuckr@picnic.mat.net> Cc: <alpha@FreeBSD.ORG> Subject: Re: relative alpha speed Message-ID: <002601bef4d8$24abba60$1e00000a@gary2.megabits.net>
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According to my PC164 motherboard manual (if you consider a thin book a manual <grin>) the PC164 can be populated with half the memory slots filled and a jumper set to indicate the data path to the RAM is 128-bits wide. With all eight slots filled (must be the SAME SIZE SIMMs) and the jumper set in the "other" configuration the data path is 256-bits wide (which I think is the configuration of the LX motherboard ([and the EB164 motherboard as well - have one of them too with the docs...])... I would opt to run all eight slots as the Memory Manager can then keep the CPU running full speed (no wait state insertions because the memory data path is too narrow)... Hope this helps... gm... -----Original Message----- From: David O'Brien <obrien@NUXI.com> To: Chuck Robey <chuckr@picnic.mat.net> Cc: alpha@FreeBSD.ORG <alpha@FreeBSD.ORG> Date: Wednesday, September 01, 1999 1:37 PM Subject: Re: relative alpha speed >> 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) > >-- >-- David (obrien@NUXI.com -or- obrien@FreeBSD.org) > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-alpha" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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