DEC Pro hard drive formatter

Mattis Lind mattislind at
Thu Jan 14 13:13:36 CST 2021

torsdag 14 januari 2021 skrev Paul Koning via cctalk <cctalk at

> > On Jan 14, 2021, at 1:42 PM, Chris Zach <cz at> wrote:
> >
> > ...
> > Is there a hardware emulator that can emulate RX50's from images to a
> Pro? Been wondering that...

As far as the releasnotes tell FlashFloppy by Keir Fraser support RX33 and

> Perhaps David Gesswein's MFM emulator could be modified to do that.  You
> might ask him.  I don't think it does so out of the box, though.  The
> signal frequencies are much lower than those of hard drives.
> Some others make products that claim to offer the capability,
> is one (mentioned by David) and I also found this
> .  I know
> nothing about either.  Standard PC floppy formats use 9 sectors per track
> but normal drives can handle 10-sector DEC formats too.  If the emulators
> are done right they should handle that as well, but of course you'd have to
> confirm that.
>         paul

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