From owner-freebsd-hackers Thu Apr 6 10:10:16 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id KAA02265 for hackers-outgoing; Thu, 6 Apr 1995 10:10:16 -0700 Received: from relay1.UU.NET (relay1.UU.NET [192.48.96.5]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id KAA02259 for ; Thu, 6 Apr 1995 10:10:15 -0700 Received: from ast.com by relay1.UU.NET with SMTP id QQykhw02281; Thu, 6 Apr 1995 13:09:53 -0400 Received: from trsvax.fw.ast.com (fw.ast.com) by ast.com with SMTP id AA09379 (5.67b/IDA-1.5 for uunet!freebsd.org!freebsd-hackers); Thu, 6 Apr 1995 10:13:55 -0700 Received: by trsvax.fw.ast.com (/\=-/\ Smail3.1.18.1 #18.1) id ; Thu, 6 Apr 95 12:09 CDT Received: by nemesis.lonestar.org (Smail3.1.27.1 #18) id m0rwugR-0004w1C; Thu, 6 Apr 95 11:45 CDT Message-Id: Date: Thu, 6 Apr 95 11:45 CDT To: freebsd-hackers@FreeBSD.org From: uhclem@nemesis.lonestar.org (Frank Durda IV) Sent: Thu Apr 6 1995, 11:45:26 CDT Subject: Re: PCI/EISA/ISA performance Cc: uhclem@nemesis.lonestar.org Sender: hackers-owner@FreeBSD.org Precedence: bulk [0]"Rodney W. Grimes" [0]On Tue, 4 Apr 1995, Rodney W. Grimes wrote: [0]ISA does not have a specified clock frequency, I have seen it running [0]as fast as 16Mhz. Most boards die above 10Mhz, but some of the more [0]specialized industrial applications boards are spec'd upto 12 or 16Mhz. Actually, there is an IEEE standard on timing and performance for the ISA bus. It came out in the late eighties. I don't have it here (we have a copy at work) but I am pretty sure it says 8.33MHz is the IEEE spec. We used this spec recently when fighting Intel over some non-compliance on IOW timing. Frank Durda IV |"I'll huff, and I'll puff, or uhclem%nemesis@trsvax.ast.com (Internet)| and I'll get promoted." ...letni!rwsys!nemesis!uhclem | - Old management saying ...decvax!trsvax.fw.ast.com!nemesis!uhclem |