Date: Fri, 8 Oct 1999 00:01:34 +0200 (CEST) From: Wilko Bulte <wilko@yedi.iaf.nl> To: ken@kdm.org (Kenneth D. Merry) Cc: FreeBSD-hackers@FreeBSD.ORG Subject: Re: Turbochannel based Alpha, quickie question Message-ID: <199910072201.AAA43983@yedi.iaf.nl> In-Reply-To: <199910072025.OAA96990@panzer.kdm.org> from "Kenneth D. Merry" at "Oct 7, 1999 2:25:25 pm"
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As Kenneth D. Merry wrote ... > Wilko Bulte wrote... > > I have the distinct (bad) feeling this is due to: > > > > # A single entry for any of these controllers (ncr, ahb, ahc, amd) is > > # sufficient for any number of installed devices. > > controller ncr0 > > controller isp0 > > #controller esp0 > > > > in GENERIC. I mean, esp is the driver for the 53C94 ncr scsi chip. > > Is there any particular reason why it is commented out in GENERIC? > > Floppy disk size limit maybe? > > The esp driver hasn't been ported to CAM. Are you volunteering? :) I noticed that when I tried to compile a TC-enabled kernel on my Aspen Alpine. Sort of familiar looking header files were missing ;-) Pre-CAM files obviously. Volunteering... if I could find the time. Unlikely.. Is there a description somewhere how I can create my own test boot floppies? (I have a SCSI-interfaced floppy disk; works great BTW). I found write_mfs_in_kernel but the Makefile in /usr/src/release sort of escapes me in this respect (also in other respects to be honest..) How difficult would CAMifying a driver be? > One other, perhaps easier task might be to write a TurboChannel front end > for the AMD driver. Supposedly the AMD 53c974 and NCR 53C94 are pretty > much the same chip. Sounds like one needs to dig into the TC idiosyncrasies. I'd rather not. > The NetBSD esp driver might be a good place to look for clues. > > Until the esp driver is ported, or someone makes the AMD driver work with > those chips, you'll have to boot the machine diskless. Yuck. -- | / o / / _ Arnhem, The Netherlands - Powered by FreeBSD - |/|/ / / /( (_) Bulte WWW : http://www.tcja.nl http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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