From owner-freebsd-hardware Wed May 15 07:25:51 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id HAA21656 for hardware-outgoing; Wed, 15 May 1996 07:25:51 -0700 (PDT) Received: from Root.COM (implode.Root.COM [198.145.90.17]) by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id HAA21648 for ; Wed, 15 May 1996 07:25:47 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by Root.COM (8.7.5/8.6.5) with SMTP id HAA14706; Wed, 15 May 1996 07:25:43 -0700 (PDT) Message-Id: <199605151425.HAA14706@Root.COM> X-Authentication-Warning: implode.Root.COM: Host localhost [127.0.0.1] didn't use HELO protocol To: Sean Eric Fagan cc: mmead@Glock.COM, hardware@FreeBSD.org Subject: Re: Triton chipset with 256k cache caches 32M only? In-reply-to: Your message of "Tue, 14 May 1996 11:55:13 PDT." <199605141855.LAA00480@kithrup.com> From: David Greenman Reply-To: davidg@Root.COM Date: Wed, 15 May 1996 07:25:43 -0700 Sender: owner-hardware@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk >I'm assuming that, in ECC mode, the chipset always makes sure 64 bits are >fetched; with one bit of parity per 8-bit byte, that gives you 8 bits of >parity bits per 64-bit longword; that leaves a couple of extra bits more >than ECC requires. ECC requires 8 syndrome bits for 64bits of data; there are no extra bits. -DG David Greenman Core-team/Principal Architect, The FreeBSD Project