[sci.electronics] Replacing 8" floppy with 1.2 Meg 5 1/4

royf@killer.Dallas.TX.US (Roy Frederick) (05/09/89)

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