Date: Thu, 20 Feb 2003 09:06:32 +0100 From: phk@phk.freebsd.dk To: Takahashi Yoshihiro <nyan@jp.FreeBSD.org> Cc: imp@bsdimp.com, peter@wemm.org, sos@FreeBSD.ORG, current@FreeBSD.ORG, mdodd@FreeBSD.ORG Subject: Re: The cbus driver for pc98 Message-ID: <30195.1045728392@critter.freebsd.dk> In-Reply-To: Your message of "Thu, 20 Feb 2003 16:55:55 %2B0900." <20030220.165555.112582534.nyan@jp.FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
In message <20030220.165555.112582534.nyan@jp.FreeBSD.org>, Takahashi Yoshihiro writes: >In article <20030217.103016.58455672.imp@bsdimp.com> >"M. Warner Losh" <imp@bsdimp.com> writes: > >> Cbus is to ISA as CardBus is to PCI in many ways. Cbus is very much >> like ISA in all but a few details. CardBus is pci with a few twists >> and turns that differ. If you look at how we've implemented cardbus, >> you'll see that we've tried to do it as a 'subclass' of the pci bus. >> We implement the PCI interfaces in the cardbus bus code, even though >> it is not really a pci bus. I'd propose that cbus implements the ISA >> interfaces in a similar manner. > >If my understanding is not a mistake, the CardBus specifications is >derived from the PCI. Therefore, I can understand that the cardbus >driver depend on the pci driver. But, the Cbus is NOT derived from >the ISA. So, I think that the cbus driver should not depend on the >isa driver. This increasingly sounds like an emotional thing rather than a technical thing :-( -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?30195.1045728392>