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From: dwu@halibut.nosc.mil
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Help disabling floppy controller
Keywords: NCL floppy controller
Message-ID: <3887@nosc.NOSC.MIL>
Date: 20 Apr 91 02:13:39 GMT
Sender: nobody@nosc.NOSC.MIL
Followup-To: comp.sys.ibm.pc.hardware
Organization: Naval Ocean Systems Center, San Diego
Lines: 21
Originator: dwu@halibut.nosc.mil


I recently bought a 3.5" drive and a floppy controller card, but I'm
having trouble installing it in my old AT.  My AT already has an MFM hard
drive/floppy controller. I use it to control my ST-251-1 hard disk, so I can't
just pull this board out and replace it with the new floppy controller.  
But if I try to insert the new floppy controller into the AT, I can't even 
boot up. 

I assume that the old MFM/floppy controller is conflicting with the new 
floppy controller. I would like to disable the floppy controller portion
of the MFM/floppy controller, but I don't know how to do this. I don't have a
manual for it. The card is an NCL controller, model no. NDC5425 02AA.

If someone has the manual for this card, would you please tell me the jumper
settings I have to configure in order to disable JUST the floppy but NOT the
hard disk controller?

Thank you,

Daniel 
dwu@halibut.nosc.mil