non-PC Floppy imaging

[Guy Sotomayor Jr]

Thanks Lyle.

My biggest impediment at the moment is not actually having a PC that has a floppy
drive.  :-o

The other is time…work has been crazy as indicated by Jensen’s CES keynote
tonight where the chip that I’ve been working on was just announced!  yea!
9,000,000,000 transistors!

TTFN - Guy



> On Jan 7, 2018, at 10:33 PM, Lyle Bickley <lbickley at bickleywest.com> wrote:
> 
> Hi Guy,
> 
> I just copied several IBM 8" Maintenance Device (MD) Diskettes - and
> verified that the copies work on the IBM MD. They seem to be in an IBM
> 3x0 format (with a standard IBM VTOC).
> 
> Track 0 on the diskettes is 128 byte sectors,
> Tracks 1 through 76 are 256 byte sectors.
> The diskettes are DSSD.
> 
> (So you need a Shugart 850/851 (or equivalent) to make the copies).
> 
> I used both Teledisk and IMD - and both successfully captured and
> re-created the diskettes correctly.
> 
> More in editing IBM images later...
> 
> Cheers,
> Lyle
> 
> 
> On Fri, 5 Jan 2018 11:52:56 -0800
> Guy Sotomayor via cctalk <cctalk at classiccmp.org> wrote:
> 
>> Hi,
>> 
>> I now have a number of uCode diskettes for my IBM 4331.  I would
>> somehow like to image them so: a) I have backups in case the floppies
>> themselves go bad b) be able to investigate their contents in case I
>> have to “merge” the contents of multiple floppies to make a single
>> good one
>> 
>> These are all 8” diskettes.
>> 
>> The complicating factors in all of this are:
>> a) any text (e.g. strings) are going to be in EBCDIC rather than ASCII
>> b) each uCode diskette was presumably serialized to the CPU it was for
>> c) not sure what the “on-disk” structure looks like
>> d) the only 8” diskette drives that I have are in IBM (non-PC)
>> equipment
>> 
>> Any ideas/comments would be welcome.
>> 
>> Thanks.
>> 
>> TTFN - Guy
>> 
> 
> 
> 
> -- 
> 73      AF6WS
> Bickley Consulting West Inc.
> http://bickleywest.com
> 
> "Black holes are where God is dividing by zero"