Newsgroups: comp.sys.amiga.hardware
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!batcomputer!cornell!johnhlee
From: johnhlee@CS.Cornell.EDU (John H. Lee)
Subject: Re: Adding a second internal floppy
Message-ID: <1991Apr22.213721.22392@cs.cornell.edu>
Keywords: adding second internal floppy disk drive amiga 2000
Sender: news@cs.cornell.edu (USENET news user)
Nntp-Posting-Host: oboe.cs.cornell.edu
Reply-To: johnhlee@cs.cornell.edu (John H. Lee)
Organization: Cornell Univ. CS Dept, Ithaca NY 14853
References: <anderson.672316165@mrcnext>
Date: Mon, 22 Apr 1991 21:37:21 GMT
Lines: 44

In article <anderson.672316165@mrcnext> anderson@mrcnext.cso.uiuc.edu writes:
>I recently purchased an external Amiga 2.5" floppy drive real cheap used with
>hopes that I could easily plop it into the second 3.5" bay of my Amiga
>2000...
[...]
>After plugging in the power connector and ribbon cable, I powered up to
>find that the newly installed drive was very confused.  It's LED light
>never turns off and the drive maintains a constant slowly repeating "chug"
>sound as if it's trying to do something???
>
>When installing drives in an IBM drive a while back, I remember having to
>do things like add resistor packs or change a few jumpers in order to
>configure the drive as the end of the internal drive "chain".
>Unfortunately, I have no instructions to this effect on the Amiga... I can
>see a set of jumpers on the existing internal Chinon right next to the
>ribbon cable header and there are also some jumpers within the newly
>insterted Chinon.
[...]
>Does anyone out there know exactly what it takes to make a newly installed
>(second) internal floppy disk drive happy to be there??? (Dave H. are you
>there :)

If the second drive's motor is constantly turning, it could be that you have
the cable plugged in upside-down.  Check that first.

There are no user-removable terminators on 3.5" drives, but you do have to
make sure the second drive is jumpered for SELECT-2 (i.e., the second drive),
and that a A2000 motherboard jumper (I don't remember the jumper number) is
set to enable the second drive.

Does the external drive have the motor latch built into the drive?  Or
did it have a little circuit card attached to the drive?  Remove it if
it does--you can't use it.  The A2000 has the motor latch circuit built
into the motherboard for the internal drives, and I know that some 720K
IBM AT-type drives (that support diskchange) plug right in.  If the drive
has the motor latch circuit built into the drive, I don't think it'll work.


P.S.  Could you keep your line length down to < 80 chars, please?

-------------------------------------------------------------------------------
The DiskDoctor threatens the crew!  Next time on AmigaDos: The Next Generation.
	John Lee		Internet: johnhlee@cs.cornell.edu
The above opinions of those of the user, and not of this machine.
