Duplicating 3.5" tar disks

[Paul Amaranth]

Here's a problem that's a little different from the usual stuff:

I have a piece of software that I converted to AIX 3.1 on the RS6000
through the generous services of one of the IBM Porting Centers.  The
software will be distributed on several 3.5 inch diskettes in tar
format.  No problem there (btw, the program consists of about 350K lines
of fortran in 20 or so large modules with some additional support code
in C and compiled and linked without any problems whatsoever)

Now the problem:  I have to make distribution copies of these
diskettes, that is, identical copies. Eventually, the problem will go
away when I obtain a 6000.  In the meantime, I do not have access to a
6000 and I would like to make copies on a DOS machine, but since a DOS
sector editor could not even read the disk, I suspect that various
parameters are different.  Can anyone shed any light on the format used
on the 3.5 inch floppies?  Does anyone know of any programs (DOS,
unfortunately) that might be of use?  Does anyone know what parameters
are used by the floppy controller chip so I can write my own routine?

Any and all help cheerfully accepted, although pointers to read the
manual will be ignored since the manual (and machine) will not be delivered
until next year 8-)
-- 
Paul Amaranth  office: (313) 370 4541 (also voicemail) 
(internet)     amaranth at vela.acs.oakland.edu  | WANTED: Clever saying
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