Path: utzoo!utgpu!water!watmath!clyde!att!oucsace!oucs!wright!cnee
From: cnee@wright.EDU (Cheng-Lee Nee)
Newsgroups: comp.sys.ibm.pc
Subject: Re: IBM-XT Floppy upgrade
Message-ID: <280@thor.wright.EDU>
Date: 13 Aug 88 20:01:15 GMT
References: <19592@ccicpg.UUCP>
Organization: Wright State University, Dayton OH, 45435
Lines: 24

in article <19592@ccicpg.UUCP>, billm@ccicpg.UUCP (Morita Bill) says:
> References:
> 
> 
> 	The problem is this: Only ONE drive will work, e.g. the first drive
> 	(the "a:" drive).  Both floppy drives function correctly when placed
> 	in the "a" drive position on the cable.  The cable checks out
> 	in that I can plug it in swapped end-for-end and the "a" drive
> 	functions correctly.  The only conclusion I can come to is that
> 	there must be some hardware change necessary.  Like a DIP switch
> 	on the floppy controller or the mother board.  None of the software
> 	can "see" the second drive.  Maybe I need a new BIOS ROM???

There is a bank of DIP switch on the XT motherboard. The switch 7 & 8 are
for number of floppy drives installed. The settings are as follow:

	7=on  8=on   1 drive installed
	7=off 8=on   2 drives installed
	7=on  8=off  3 drives installed
	7=off 8=off  4 drives installed

Just change the switchs and DOS will recognize the drive B:

Cheng-Lee Nee