From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gatekeeper.tait.co.nz (unknown [202.37.96.21]) by ozlabs.org (Postfix) with ESMTP id 9C88E67A7A for ; Wed, 26 Jan 2005 13:56:43 +1100 (EST) Received: from gatekeeper.tait.co.nz (merlin.tait.co.nz [127.0.0.1]) by localhost.tait.co.nz (Postfix) with ESMTP id 6A5B410BA86 for ; Wed, 26 Jan 2005 15:31:49 +1300 (NZDT) Received: from sunstrike.tait.co.nz (unknown [172.25.40.92]) by gatekeeper.tait.co.nz (Postfix) with ESMTP id D873510BA85 for ; Wed, 26 Jan 2005 15:31:48 +1300 (NZDT) Received: from conversion-daemon.sunstrike.tait.co.nz by sunstrike.tait.co.nz (Sun Java System Messaging Server 6.1 (built Apr 28 2004)) id <0IAW00901JVH4C00@sunstrike.tait.co.nz> (original mail from robin.gilks@tait.co.nz) for linuxppc-embedded@ozlabs.org; Wed, 26 Jan 2005 15:31:48 +1300 (NZDT) Received: from [172.25.114.91] by sunstrike.tait.co.nz (Sun Java System Messaging Server 6.1 (built Apr 28 2004)) with ESMTP id <0IAW0062XKD0VI60@sunstrike.tait.co.nz> for linuxppc-embedded@ozlabs.org; Wed, 26 Jan 2005 15:31:48 +1300 (NZDT) Date: Wed, 26 Jan 2005 15:31:48 +1300 From: Robin Gilks To: ppc embedded list Message-id: <41F70114.5040200@tait.co.nz> MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=ISO-8859-1 Subject: 8xx bus monitoring Reply-To: robin.gilks@tait.co.nz List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Greetings System is a MPC859 based controller. I'm trying to determine whether a peripheral is not responding to memory fetches by using the bus monitor feature on the Transfer Acknowledge (TA) signal. This is set to the maximum count in the Bus Monitor Timeout (BMT) in the System Protect Control Register (SYPCR). The monitoring is enabled by setting the Bus Monitor Enable (BME) bit in SYPCR as well. I understand that I can use the Transfer Error Status Register (TESR) to read the fact that I have had a timeout by checking the Data Transfer Monitor Timeout (DTMT) bit in this register. The problem is, how do I know any error has occured so I know to look at the TESR. I can't see a way of generating an exception from this condition. Any help appreciated. -- Robin Gilks Senior Design Engineer Phone: (+64)(3) 357 1569 Tait Electronics Fax : (+64)(3) 359 4632 PO Box 1645 Christchurch Email : robin.gilks@tait.co.nz New Zealand ======================================================================= This email, including any attachments, is only for the intended addressee. It is subject to copyright, is confidential and may be the subject of legal or other privilege, none of which is waived or lost by reason of this transmission. If the receiver is not the intended addressee, please accept our apologies, notify us by return, delete all copies and perform no other act on the email. Unfortunately, we cannot warrant that the email has not been altered or corrupted during transmission. =======================================================================