From owner-freebsd-current Mon Feb 17 0:32: 9 2003 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4C2E737B405; Mon, 17 Feb 2003 00:32:08 -0800 (PST) Received: from watery.cc.kogakuin.ac.jp (watery.cc.kogakuin.ac.jp [133.80.152.80]) by mx1.FreeBSD.org (Postfix) with ESMTP id ABB3B43FDF; Mon, 17 Feb 2003 00:32:00 -0800 (PST) (envelope-from nyan@jp.FreeBSD.org) Received: from localhost (localhost [IPv6:::1]) by watery.cc.kogakuin.ac.jp (8.12.6/8.12.6) with ESMTP id h1H8VlxR098628; Mon, 17 Feb 2003 17:31:47 +0900 (JST) (envelope-from nyan@jp.FreeBSD.org) Date: Mon, 17 Feb 2003 17:31:14 +0900 (JST) Message-Id: <20030217.173114.85351300.nyan@jp.FreeBSD.org> To: peter@wemm.org Cc: imp@bsdimp.com, sos@FreeBSD.ORG, current@FreeBSD.ORG, mdodd@FreeBSD.ORG Subject: Re: The cbus driver for pc98 From: Takahashi Yoshihiro In-Reply-To: <20030217070601.78E612A89E@canning.wemm.org> References: <20030216.235014.111547234.imp@bsdimp.com> <20030217070601.78E612A89E@canning.wemm.org> X-Mailer: Mew version 3.1 on Emacs 21.2 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In article <20030217070601.78E612A89E@canning.wemm.org> Peter Wemm writes: > I can understand if you do not like to call your cbus hardware "ISA" > devices, but also consider that on most pc-at hardware there are no "ISA" > devices either. These are completely different. All PC-98 machines don't have "ISA" devices and buses at all, but a little old PC-AT machines have "ISA" buses. And, even if the PC-AT machine does not have "ISA" buses, it has "PCI-ISA" bridge. > Things like the floppy controller, keyboard controller, > counter/timer, rtc, etc etc are all on motherboard busses. Many are on > things like X-bus, v-link, or other custom "quick and dirty" host busses. FYI, NetBSD/pc98 has the "systm" virtual bus. > I would rather live with #ifdef PC98 than > to have a duplicate set of isa/* and i386/* files that are nearly identical > except for include file paths, #ifdef PC98 and s/isa/cbus/. I'm sure there > are other ways to improve the situation without having to resort to this > mass duplication of code. How? I have had some questions like "Does PC98 have ISA bus?" or "Why PC98 uses ISA driver?". To clear these questions and problems, I think that adding separated cbus driver is better way. --- TAKAHASHI Yoshihiro To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message