[Coco] 720kb Diskettes

Barry Nelson barry.nelson at amobiledevice.com
Sat Feb 27 23:17:24 EST 2016

If you can provide a link to at least one disk I can examine it and tell you exactly how to get it to mount. There is also a density setting you may need that has to do with if the disk is 48 tpi or 96 tpi.

> Gene Heskett gheskett at wdtv.com 
> Sat Feb 27 19:24:55 EST 2016
> On Saturday 27 February 2016 18:46:10 Ed Orbea wrote:
> >    I'm finally getting around to accessing via my SDC) the Australian
> > OS9 POD library files graciously provided by Bob Devries in Feb 2015
> > (yeah, I know it's taken me a year).
> >    Bob says that they are 720k diskettes and I am having problems
> > getting dmode properly set (either in VCC or SDC) to access the
> > drives. Whatever I try just gives error 249.
> >    Can I get a  listing of the proper dmode settings?
> >    Thanks
> >    Ed
> Depending on whether or not the SDC honors the side bit, a 720k disk 
> would be sid=2 cyl=50 if it does, otherwise I'd try sid=1 cyl=A0.  
> Either way is a 720k, 160 track for sid=1, and 80 track if sid=2
> Cheers, Gene Heskett

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