Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!killer!royf
From: royf@killer.Dallas.TX.US (Roy Frederick)
Newsgroups: sci.electronics
Subject: Replacing 8" floppy with 1.2 Meg 5 1/4
Keywords: floppies
Message-ID: <8057@killer.Dallas.TX.US>
Date: 9 May 89 05:00:18 GMT
Distribution: na
Organization: The Unix(R) Connection, Dallas, Texas
Lines: 17

I have an old Dual Systems Unix box that supports 8" 
floppies using a Compupro Disk 1 controller board.  It can
be modified to support 5 1/4" drives - but only the old
360 Kb type.  I would like to substitute a 1.2 Mb drive
for the 8" unit.  I believe that the 1.2 Mb drive uses the
same 500 Khz data clock rate - so it should be possible...

Does anyone out there know how to do this?  I can change
the device driver to support different parameters.  What I
need is the electrical hookup.

Thanks in advance.

Roy Frederick (royf@killer.UUCP)
Dallas County Data Services  (214) 749-6340
504 Records Bldg.
Dallas, TX 75202