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Path: utzoo!utcs!tj
From: tj@utcs.UUCP (tj)
Newsgroups: net.micro.pc
Subject: Re: help: second drive add-on problems!
Message-ID: <744@utcs.UUCP>
Date: Thu, 11-Jul-85 13:06:22 EDT
Article-I.D.: utcs.744
Posted: Thu Jul 11 13:06:22 1985
Date-Received: Thu, 11-Jul-85 14:22:11 EDT
References: <993@ucbtopaz.CC.Berkeley.ARPA>
Reply-To: tj@utcs.UUCP (tj)
Organization: University of Toronto - General Purpose UNIX
Lines: 18
Summary: 


At the risk of being the 7000'th person to tell you this, have you
got the drive jumpers setcorrectly.
With two drives and an un twisted ribbon cable you must have drives
one and two jumpered as drive 1 and drive 2 respectively. If you have
the ribbon cable that is not twisted then the drives are both jumpered
the same. 
From what you say about it working fine as drive one alone it then Cassette
Basic when both are plugged in it sounds like the two are fighting.
If it works fine as drive one AND your ribbon cable has the twist in it
then just plug the original in as well WITHOUT CHANGING ANY JUMPERS ON THE
FLOPPY DRIVE. If the ribbon cable is not twisted then you have to change
one of the drives to act as drive 2. The twist I mention is really
obvious. the ribbon cable comes from the controller card, to a drive 
connector then to the second drive connector. If between the two drive
connectors the ribbon cable is cut and four conductors are flipped over
then it has the twist. 
t.jones