Date: Mon, 26 Jun 2000 23:55:23 -0600 From: "Kenneth D. Merry" <ken@kdm.org> To: Jens Schweikhardt <schweikh@noc.dfn.de> Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: Termination question Message-ID: <20000626235523.A36809@panzer.kdm.org> In-Reply-To: <20000626133709.C27420@obsidian.noc.dfn.de>; from schweikh@noc.dfn.de on Mon, Jun 26, 2000 at 01:37:09PM %2B0200 References: <20000626133709.C27420@obsidian.noc.dfn.de>
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On Mon, Jun 26, 2000 at 13:37:09 +0200, Jens Schweikhardt wrote: > > hello, world\n > > just a quick question if my understanding is right: I've got an ASUS > P2L97-S mobo with on-board SCSI. It has both 50 and 68 pin connectors > and I'm having at least one device on each of them. I have terminated > the last device on the 50 pin cable, put an active terminator plug at > the end of the 68 pin cable and disabled termination of the host > adapter. Everything works so far, but I want to be sure that's the Right > Thing (TM). Actually, you probably want to enable high-byte termination if the onboard SCSI BIOS has that option. The reason is that you've got the lower 8 data bits terminated at both ends of the bus, which is correct, but you only have the upper 8 bits terminated on the end with the active terminator. You'll want to terminate the upper 8 bits on the adapter as well, since they don't pass through to the end of the 50-pin cable. Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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