From owner-freebsd-hackers Thu Dec 13 19:57:56 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from mass.dis.org (mass.dis.org [216.240.45.41]) by hub.freebsd.org (Postfix) with ESMTP id 039B837B419; Thu, 13 Dec 2001 19:57:53 -0800 (PST) Received: from mass.dis.org (localhost [127.0.0.1]) by mass.dis.org (8.11.6/8.11.3) with ESMTP id fBE43pl06844; Thu, 13 Dec 2001 20:03:51 -0800 (PST) (envelope-from msmith@mass.dis.org) Message-Id: <200112140403.fBE43pl06844@mass.dis.org> To: Steve Price Cc: hackers@FreeBSD.ORG Subject: Re: MMU-less FreeBSD In-Reply-To: Message from Steve Price of "Thu, 13 Dec 2001 21:43:52 CST." <20011213214352.C597@bsd.havk.org> Date: Thu, 13 Dec 2001 20:03:51 -0800 From: Mike Smith Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG > > Hard. Lots of stuff relies on mmap, which basiclly requires an MMU or > > other tricks. The other tricks can be somewhat expensive... > > That's sort of what I figured. WRS and possible others use BSD > as a basis for their embedded OS on archs without an MMU, right? No. Many embedded operating systems use chunks of BSD code, but you're not going to run a "real" BSD on anything without an MMU; you'll have to cut it down drastically (and effectively rewrite much of the core of the OS. If you want an OS, consider eCOS or one of the "real" embedded systems, don't make too much work for yourself trying to take a system that's entirely unsuited to the task and butchering it... To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message