Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262092AbUCVQe7 (ORCPT ); Mon, 22 Mar 2004 11:34:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262099AbUCVQe7 (ORCPT ); Mon, 22 Mar 2004 11:34:59 -0500 Received: from kinesis.swishmail.com ([209.10.110.86]:1551 "EHLO kinesis.swishmail.com") by vger.kernel.org with ESMTP id S262092AbUCVQe4 (ORCPT ); Mon, 22 Mar 2004 11:34:56 -0500 Message-ID: <405F19A3.20001@techsource.com> Date: Mon, 22 Mar 2004 11:51:47 -0500 From: Timothy Miller MIME-Version: 1.0 To: root@chaos.analogic.com CC: Tigran Aivazian , David Schwartz , Justin Piszcz , linux-kernel@vger.kernel.org Subject: Re: Linux Kernel Microcode Question References: <405F0B8D.8040408@techsource.com> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 657 Lines: 20 Richard B. Johnson wrote: > > ALL instructions are performed by the microcode. The Z80 had no microcode. It was completely hard-wired. As I understand it, it's pretty much an ancient idea to do "everything" by microcode. Only certain very complex instructions are done by microcode. On the other hand, as I said before, it's not unreasonable for lookup tables to be involved in instruction decoding. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/