From owner-freebsd-current Sat Oct 3 20:17:28 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id UAA23514 for freebsd-current-outgoing; Sat, 3 Oct 1998 20:17:28 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from Genesis.Denninger.Net (kdhome-2.pr.mcs.net [205.164.6.10]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id UAA23469 for ; Sat, 3 Oct 1998 20:16:58 -0700 (PDT) (envelope-from karl@Genesis.Denninger.Net) Received: (from karl@localhost) by Genesis.Denninger.Net (8.9.1/8.8.2) id WAA17510; Sat, 3 Oct 1998 22:16:12 -0500 (CDT) Message-ID: <19981003221611.A17488@Denninger.Net> Date: Sat, 3 Oct 1998 22:16:11 -0500 From: Karl Denninger To: Terry Lambert , "Kenneth D. Merry" Cc: tom@uniserve.com, dnelson@emsphone.com, bright@hotjobs.com, current@FreeBSD.ORG Subject: Re: Long IDE probes? References: <199809302005.OAA01044@panzer.plutotech.com> <199810040305.UAA21544@usr06.primenet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.93.2i In-Reply-To: <199810040305.UAA21544@usr06.primenet.com>; from Terry Lambert on Sun, Oct 04, 1998 at 03:05:58AM +0000 Organization: Karl's Sushi and Packet Smashers Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, Oct 04, 1998 at 03:05:58AM +0000, Terry Lambert wrote: > > That's not really the point of the delay. The point of the "bus settle" > > delay is to allow devices to recover from the bus reset that we send at > > boot. As Justin pointed out, modern devices take a relatively short period > > of time to do this (100ms or so), but older devices may take longer. > > Uh, so why are we sending a reset? Is it merely to allow us to wait? > > > Terry Lambert > terry@lambert.org For 1542s you can shut off the BIOS entirely and thus not get a POST reset (There is no post in that case). I am unaware of a way to do this for PCI adapters. I understand the need for *ONE* SCSI reset as part of the boot sequence. But I fail to understand why we have to send one if the adapter is of a type where you *must* have already sent one (ie: AHA2940) -- -- Karl Denninger (karl@denninger.net) http://www.mcs.net/~karl I ain't even *authorized* to speak for anyone other than myself, so give up now on trying to associate my words with any particular organization. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message