From owner-freebsd-questions Tue May 11 10:15:42 1999 Delivered-To: freebsd-questions@freebsd.org Received: from cygnus.rush.net (cygnus.rush.net [209.45.245.133]) by hub.freebsd.org (Postfix) with ESMTP id DC2F1151DA for ; Tue, 11 May 1999 10:15:34 -0700 (PDT) (envelope-from bright@rush.net) Received: from localhost (bright@localhost) by cygnus.rush.net (8.9.3/8.9.3) with SMTP id MAA18614; Tue, 11 May 1999 12:38:01 -0500 (EST) Date: Tue, 11 May 1999 12:37:59 -0500 (EST) From: Alfred Perlstein To: Gurudatt Shenoy Cc: freebsd-questions@FreeBSD.ORG Subject: Re: 486 kernel works for 586? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, 11 May 1999, Gurudatt Shenoy wrote: > > Hello, > I compiled the FreeBSD 2.2.1 kernel on a Pentium class CPU with the CPU > type set to "I486_CPU". However, when I boot the machine and try to use > this kernel, I get "CPU class unknown" error. > Won't a 486 kernel work on a "586" type CPU? > > I'd appreciate any feedback. Please reply to my email address - I am not > on the FreeBSD list. > MUST have the CPU type that you are going to use compiled in, there is no "forward/backward compatibility" it just must have that type of CPU compiled in. -Alfred To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message