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From: neese@adaptx1.UUCP
Newsgroups: comp.periphs.scsi
Subject: Re: <20602@agate.berkeley.edu>
Message-ID: <283400102@adaptx1>
Date: 6 May 91 23:30:59 GMT
References: <20602@agate.berkeley.edu>
Lines: 69
Nf-ID: #R:agate.berkeley.edu:20602:adaptx1:283400102:000:2411
Nf-From: adaptx1.UUCP!neese    May  6 10:50:00 1991


>I'm running on the following platform:
>
>386-20 w/ 13MB RAM
>Adaptec 1542 SCSI Host Adapter (SCSI Address 7)
>Miniscribe 3180S (330 MB) Hard Disk (SCSI Address 0, 1542 external connector)
>Archive 2150S Tape Drive (SCSI Address 1, 1542 internal connector)
>      Firmware Level -005 (As Reported by SCSICNTL.EXE)
>
>ISC UNIX 2.02 and MS-DOS 3.30
>
>
>
>Now for the questions:
>
>1.  When running Roy Neese's SCSICNTL utility (Version 5.1) the following error
>    message appears at startup.
>
>	   Start:  Tape Drive 1 error reported
>	      Sense key 02:  Not Ready
>           Error Code 00:  No additional information
>
>    I hope this is only a jumper setting problem but at this point we
>    don't know what the proper settings are.

This is normal.  If there is no tape in the drive.  The drive is not ready.

>    The drive was supplied with the following jumper settings (pardon the
>    ASCII graphics):
>
>	Looking at the back of the drive, circuit card down.
>
>                             ------
>	RxD   *  *   TxD    | *  * | CF2     *  *   ID2
>                             ------
>
>	      *  *   DIA      *  *   CF1     *  *   ID1
>
>             ------          ------         ------
>	    | *  * | PEN    | *  * | CF0   | *  * | ID0
>             ------          ------         ------
>
>    I think I've got the ID[0-2] jumpers figured out (SCSI IDs 0-7)
>    but I have no idea what the rest are.
>
>3.  The drive was supplied without termination resistors.  Are they required
>    when connected to the 1542's internal SCSI connector?  The Miniscribe
>    3180S disk has terminators installed but is connected to the 1542's
>    external connector.  If the terminators are needed what value should
>    the be?  Any suggested vendors?

Your terminator scheme should be as follows:

If you have a device on the external connector of the 1542 and add a device
to the internal connector, do the following:

Remove the terminators from the 1542.  Make sure the last device on the
external connector of the SCSI bus has terminators.  Make sure the last
device on the internal connector of the SCSI bus also has terminators.

>4.  If anyone has a spare 2150S manual they'd be willing to part with please
>    send email to the address below.

Don't have.

			Roy Neese
			Adaptec Senior SCSI Applications Engineer
			UUCP @  neese@adaptex
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