Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site fortune.UUCP Path: utzoo!watmath!clyde!floyd!harpo!ihnp4!fortune!jones From: jones@fortune.UUCP Newsgroups: net.micro.pc Subject: Re: TEAC drives (AGAIN!!!) - (nf) Message-ID: <2753@fortune.UUCP> Date: Tue, 13-Mar-84 23:05:24 EST Article-I.D.: fortune.2753 Posted: Tue Mar 13 23:05:24 1984 Date-Received: Wed, 14-Mar-84 19:54:36 EST Sender: notes@fortune.UUCP Organization: Fortune Systems, Redwood City, CA Lines: 38 #R:rlgvax:-179000:fortune:14700006:000:1521 fortune!jones Mar 13 19:40:00 1984 There are just a few points to remember when dealing with daisy-chained peripherals: 1. Only one peripheral on each daisy-chain should have the terminating resistor pack installed. All disk peripherals come from the vendor with a terminating pack in place because it is easier to throw the pack away then to hunt one up. The vendor normally tests each drive before shipment. 2. The termination resistor pack should be placed in the last 'physical' location on the daisy chain. That is the drive furthest from the controller. 3. Some people are blessed. You can ignore the basics and your system may run just fine...perfectly in fact. The reason is that sometimes you get more than you pay for. It is a fact of manufacturing that it is expensive to build something exactly to specification. It is easier to make a part a little better than required to minimize the testing and inspection. Of course, you can't make it too much better or it is uneconomic to produce. So, between those two bounds you get some systems which work even if you stress them beyond specification and some that don't. If you have more time than money, then give it a try. It may work. That is, of course, if it doesn't damage anything. If you have more money than time, then take out the insurance of doing it the recommended way. Dan Jones UUCP: {sri-unix,amd70,hpda,harpo,ihnp4,allegra}!fortune!jones DDD: (415)595-8444 x 440 USPS: Fortune Systems Corp, 101 Twin Dolphins Drive, Redwood City, CA 94065