Re: 60ns and 70ns SIMMS in the same computer with Warp?

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#164

From: Kenneth Crudup
Date: Mon, 22 Apr 1996 00:00

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In article <4lermq$d7k@viper.shadow.net>, shawn@shadow.net says:

>Well, most mother boards (e.g. all after 486DX) force the ram to operate at
>the slowest speed.  If you have 2 70ns and 2 80ns they all operate at 80ns.

Well, more exactly, it's not the *motherboard*, it's physics. You can't run
a memory chip at a speed faster than it takes for a data bit to be valid.

Don't forget- the MB doesn't know the speed of a memory chip- *you* have to
tell it, and as most MBs can't control the speed individually between banks
(and *none* within a bank), it *has* to be set at the speed of the slowest 
chip in the system, to ensure that it's not polled for it's data before it's
ready to give it (or get it).

	-Kenny

-- 
Kenneth R. Crudup, Unix & OS/2 Software Consultant, Scott County Consulting
kenny@panix.com		CI$: 75032,3044	  +1 617 524 5929/4949 Home/Office
16 Plainfield St, Boston, MA 02130-3633	  +1 617 983 9410      Fax
OS/2 box: pkenny.tiac.net (when I'm online) Get Warp-ed! OS/2 3.0 is here NOW!

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<4kecjv$fsl@geraldo.cc.utexas.edu> <Pine.BSD/.3.91.960417123353.8471C-100000@matrix.eden.com> <e2a_9604181954@idn.nl> <4lermq$d7k@viper.shadow.net>

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From: kenny@panix.com (Kenneth Crudup)
Subject: Re: 60ns and 70ns SIMMS in the same computer with Warp?
Date: 1996/04/22
Message-ID: <4lf4hi$pdr@panix2.panix.com>
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references: <4kecjv$fsl@geraldo.cc.utexas.edu> <Pine.BSD/.3.91.960417123353.8471C-100000@matrix.eden.com> <e2a_9604181954@idn.nl> <4lermq$d7k@viper.shadow.net>
organization: Scott County Consulting, Boston, MA
newsgroups: comp.os.os2.setup.misc,comp.os.os2.bugs,bit.listserv.os2-l,alt.org.team-os2

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