From owner-freebsd-questions Sat Apr 10 22: 3:42 1999 Delivered-To: freebsd-questions@freebsd.org Received: from palrel3.hp.com (palrel3.hp.com [156.153.255.226]) by hub.freebsd.org (Postfix) with ESMTP id 1B192153ED; Sat, 10 Apr 1999 22:02:47 -0700 (PDT) (envelope-from darrylo@sr.hp.com) Received: from srmail.sr.hp.com (srmail.sr.hp.com [15.4.45.14]) by palrel3.hp.com (8.8.6 (PHNE_17135)/8.8.5tis) with ESMTP id WAA20266; Sat, 10 Apr 1999 22:00:30 -0700 (PDT) Received: from mina.sr.hp.com by srmail.sr.hp.com with ESMTP (1.37.109.16/15.5+ECS 3.3) id AA196256825; Sat, 10 Apr 1999 22:00:25 -0700 Received: from localhost (darrylo@mina.sr.hp.com [15.4.42.247]) by mina.sr.hp.com with ESMTP (8.8.6 (PHNE_14041)/8.7.3 TIS 5.0) id WAA06462; Sat, 10 Apr 1999 22:00:24 -0700 (PDT) Message-Id: <199904110500.WAA06462@mina.sr.hp.com> To: Steve Howe Cc: freebsd-scsi@FreeBSD.ORG, freebsd-questions Subject: Re: board not responding Reply-To: Darryl Okahata In-Reply-To: Your message of "Fri, 09 Apr 1999 20:02:51 -0800." Mime-Version: 1.0 (generated by tm-edit 1.1.1.1) Content-Type: text/plain; charset=US-ASCII Date: Sat, 10 Apr 1999 22:00:24 -0700 From: Darryl Okahata Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Steve Howe wrote: > ahc0 rev 1 int a irq 10 on pci:0:10:0 > ahc0: aic7800 Wide Channel, SCSI Id=7, 16 SCBs > ahc0 waiting for scsi devices to settle > (ahc0:0:0): "IBM DDRS-34560D DC1B" type 0 fixed SCSI 2 > sd0(ahc0:0:0): Direct-Access 4357MB (8925000 512 byte sectors) > ahc0: board is not responding [ ... ] > (term) (auto) (term) > IBM HD <-> 2940UW <-> Mitsumi CD <-> HP 4020 CD/RW > 68 pin 50 pin 50 pin The "IBM DDRS-34560D" is an LVD drive (I've got this exact drive, with the same firmware rev). For this IBM LVD drive, what appears to be the "term" jumper is really the jumper that controls LVD vs SE HVD (single-ended HVD), and "enabling termination" really puts the drive into single-ended mode. You also need an external terminator with this drive (with all LVD drives, actually); there is no built-in termination to enable or disable. As your diagram doesn't show an explicit external terminator with the drive, that might be your problem: no termination. [ In my case, I ordered a "wide SCSI" drive, expecting an SE HVD drive. I received an LVD drive, instead. While this is certainly a "wide SCSI" drive, it was unexpected, as I had to scramble to find some ribbon cable termination. I'm not really complaining, mind you; I'd rather have an LVD drive than a plain SE HVD one, as it'll be much easier for me to upgrade to an LVD controller, should I decide to do so. ] -- Darryl Okahata darrylo@sr.hp.com DISCLAIMER: this message is the author's personal opinion and does not constitute the support, opinion, or policy of Hewlett-Packard, or of the little green men that have been following him all day. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message