From owner-freebsd-hackers Sun Apr 13 13:30:14 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id NAA22593 for hackers-outgoing; Sun, 13 Apr 1997 13:30:14 -0700 (PDT) Received: from haldjas.folklore.ee (Haldjas.folklore.ee [193.40.6.121]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id NAA22528 for ; Sun, 13 Apr 1997 13:29:52 -0700 (PDT) Received: from localhost (narvi@localhost) by haldjas.folklore.ee (8.8.4/8.8.4) with SMTP id XAA16528; Sun, 13 Apr 1997 23:29:03 +0300 (EEST) Date: Sun, 13 Apr 1997 23:29:01 +0300 (EEST) From: Narvi To: Warner Losh cc: Terry Lambert , hackers@freebsd.org Subject: Re: 430TX ? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Sun, 13 Apr 1997, Warner Losh wrote: > In message Narvi writes: > : 4MB SRAM simms (12 ns) are available now. But where shall you plug > : them into? I really doubt any present PC/PowerPC/Alpha chipset is capable > : of making use of SRAM. Though it would make wonders to applicatiions > : hindered by present memory throughput > > I have a R4700 based MIPS board that uses 4M SRAM SIMM-like things. Cool! I guess there are also DSP boards out there may also support simm sockets for expansion RAM. In the case of SRAM main memory we live in a world without L2-cache misses, right? OK, it won't, the penalty would just be smaller/nonexistant (the L2 chache get trashed in the beginning of first loop, the usefulness for the rest is real small and other such "pathological" cases). Well, enough ranting - I just hate it when it doesn't make any visible differnce whetever the file is already cached in memory or being read in from a scsi disk on the fly or which Ppro you used. Sander > > Warner >