[Coco] high density floppy controller mods

[jdaggett at gate.net]

All data coming off a magnetic disk is an analog, either FM or MFM  
(Modified FM). The only true all digital system is optical drives.

james

On 2 Aug 2006 at 12:25, Mike Pepe wrote:

> Mark Marlette wrote:
> > Mike,
> > 
> > Is this the mod that Robert Brose of our Twin Cities Color Computer 
> > Group designed over ten years ago??? Or are you doing your own? Robert's 
> > mod is up on RTSI.
> > 
> > I have been running the HD modified 3029 controller and it does work 
> > under NitrOS-9 with the proper descriptors. PCDOS even works and that is 
> > my transfer method to/from the PC.
> > 
> > I added a line on the interface cable to send the density hole to 
> > automatic place the controller in the right clock speed based upon the 
> > sensor's output.
> > 
> > Mark
> > 
> 
> No, that mod is on the analog 3029 controller. This is on the 3129 which 
> is almost totally digital.
> 
> So, this is something new. Last I remember that mod had a switch to 
> select density. I want this to be software controlled.
> 
> -Mike
> 
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