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From: ralf@cad.cs.cmu.edu (Ralf Brown)
Newsgroups: comp.sys.ibm.pc
Subject: Adding 360K drive to AT clone: Help needed
Message-ID: <1037@cad.cs.cmu.edu>
Date: Fri, 9-Jan-87 18:57:52 EST
Article-I.D.: cad.1037
Posted: Fri Jan  9 18:57:52 1987
Date-Received: Sat, 10-Jan-87 02:09:49 EST
Distribution: na
Organization: Carnegie-Mellon University, CS/RI
Lines: 31

I have recently purchased an AT clone (see my previous post for a 
rave review) and am trying to add a second disk drive.  I have 
two TEAC 55B drives from my previous computer, but neither of them 
will work in the AT, either as drive A or drive B.  The drive which 
came with the system is a TEAC 55BV, which has completely different 
jumpers.  I asked a friend who has a PC with TEAC drives for the 
jumper settings, and they were the same as I had them set (DS1, HM, 
IU, SM, and PM all shorted). 

I have traced the problem to the solenoid not pulling Head 0 to 
the disk surface when the motor is powered up (the 55BV does not 
have a solenoid, just a mechanical interlock that prevents Head 0 
from moving all the way toward Head 1 when there is no disk in 
the drive).  I never noticed the lack of the characteristic click 
on accessing the drive, since I had become so used to it that I 
didn't hear it anymore, and the 55BV has no click. 

Now my question:  Has anyone out there used a TEAC 55B drive on 
an AT clone?  If so, please let me know the jumper settings and 
any other pertinent info.

MUCH Thanks in advance.

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