From owner-freebsd-scsi Sat May 30 18:44:20 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id SAA10864 for freebsd-scsi-outgoing; Sat, 30 May 1998 18:44:20 -0700 (PDT) (envelope-from owner-freebsd-scsi@FreeBSD.ORG) Received: from gjp.erols.com (alex-va-n008c243.moon.jic.com [206.156.18.253]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id SAA10858 for ; Sat, 30 May 1998 18:44:17 -0700 (PDT) (envelope-from gjp@gjp.erols.com) Received: from gjp.erols.com (localhost.erols.com [127.0.0.1]) by gjp.erols.com (8.8.8/8.8.7) with ESMTP id VAA25694; Sat, 30 May 1998 21:44:02 -0400 (EDT) (envelope-from gjp@gjp.erols.com) To: "Jose M. Alcaide" cc: freebsd-scsi@FreeBSD.ORG From: "Gary Palmer" Subject: Re: AHC: "cheksum error" reading SEEPROM with Iwill PIILS mb In-reply-to: Your message of "Thu, 28 May 1998 19:20:56 +0200." <356D9CF8.1E7667F5@we.lc.ehu.es> Date: Sat, 30 May 1998 21:44:02 -0400 Message-ID: <25690.896579042@gjp.erols.com> Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org "Jose M. Alcaide" wrote in message ID <356D9CF8.1E7667F5@we.lc.ehu.es>: > When the AHC driver tries to read the 7880's SEEPROM, the operation > fails with a "cheksum error". I'm afraid that the 7880 chip on my > PIILS motherboard is different (perhaps another version?): for > example, I cannot choose the termination type using the Adaptec > SCSI BIOS ("High ON/Low ON", "High ON/Low Off"...); instead, I can > only select "Enable" or "Disable". However, the "cheksum error" > trying to read the 7880's SEEPROM does not prevent the AHC driver > from working properly. Until now, I can use both the SCSI disk and > CD-ROM without any problem. The SEEPROM (Serial EEPROM) is something that Adaptec PCI cards use to store their configuration on. However, on-board controllers don't have an SEEPROM as they normally have the settings in the BIOS. Hence, the SEEPROM checksum fails because there isn't one :) The AHC driver has sensible enough defaults that it should Just Work (TM) when an SEEPROM is not found. Gary -- Gary Palmer FreeBSD Core Team Member FreeBSD: Turning PC's into workstations. See http://www.FreeBSD.ORG/ for info To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message