MFM floppy and HD emulator DREM

Dave Wade dave.g4ugm at gmail.com
Mon Oct 17 16:42:11 CDT 2016



> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Guy
> Sotomayor Jr
> Sent: 17 October 2016 21:38
> To: General Discussion: On-Topic and Off-Topic Posts
> <cctalk at classiccmp.org>
> Subject: Re: MFM floppy and HD emulator DREM
> 
> 
> > On Oct 17, 2016, at 1:31 PM, Dave Wade <dave.g4ugm at gmail.com> wrote:
> >
> >>>
> >>> I’ll likely be getting at least 3 of them (1 for the IBM 3174 and 2
> >>> for my Symbolics 3640 and possible another 2 for my other Symbolics
> 3640).
> >>>
> >
> > I gather that some one has the Dave Gershwin board working with a 3174.
> Was that you.
> > You also need 2.88 format for the 3174 floppies. Any one modified any
> > of the floppy emulators To work at this density.
> 
> Yes, that’s me but I have had issues with the emulator starting up reliably so
> that the 3174 boots.
> 

So still not fixed?

> Actually, the format is 2.4MB (2x 1.2MB).  It’s a 5-1/4” format instead of a 3-
> 1/2” format.
> 

Sorry been working on my PC Server 500, I assume the data rate is double, so the existing devices are not easily modified?

> TTFN - Guy

Dave



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