non-PC Floppy imaging
Guy Sotomayor Jr
ggs at shiresoft.com
Mon Jan 8 00:46:25 CST 2018
My biggest impediment at the moment is not actually having a PC that has a floppy
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!
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...
> On Fri, 5 Jan 2018 11:52:56 -0800
> Guy Sotomayor via cctalk <cctalk at classiccmp.org> wrote:
>> 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)
>> Any ideas/comments would be welcome.
>> TTFN - Guy
> 73 AF6WS
> Bickley Consulting West Inc.
> "Black holes are where God is dividing by zero"
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