From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Mon, 19 Jan 2004 14:50:20 +0000 (GMT) Received: from p508B617B.dip.t-dialin.net ([IPv6:::ffff:80.139.97.123]:63754 "EHLO mail.linux-mips.net") by linux-mips.org with ESMTP id ; Mon, 19 Jan 2004 14:50:19 +0000 Received: from fluff.linux-mips.net (fluff.linux-mips.net [127.0.0.1]) by mail.linux-mips.net (8.12.8/8.12.8) with ESMTP id i0JEoIex009492; Mon, 19 Jan 2004 15:50:18 +0100 Received: (from ralf@localhost) by fluff.linux-mips.net (8.12.8/8.12.8/Submit) id i0JEoHnU009491; Mon, 19 Jan 2004 15:50:17 +0100 Date: Mon, 19 Jan 2004 15:50:17 +0100 From: Ralf Baechle To: karthikeyan natarajan Cc: linux-mips@linux-mips.org Subject: Re: In r4k, where does PC point to? Message-ID: <20040119145017.GA9141@linux-mips.org> References: <20040119074219.15886.qmail@web10106.mail.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040119074219.15886.qmail@web10106.mail.yahoo.com> User-Agent: Mutt/1.4.1i Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 4034 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Mon, Jan 19, 2004 at 07:42:19AM +0000, karthikeyan natarajan wrote: > Basically, the PC points to the next instruction > to > be executed. But, in R4k, there are 8 instructions > getting executed in parallel. Where does the PC point > to? My understanding is that PC points to the next > instruction that will be entered into the pipeline. > Please correct me if i am wrong.. The fact that instructions are issued in a pipeline is not visible in the EPC value. Ralf