Re: 1571 images as G64

I found a discussion about this on the Kryoflux forums.

http://forum.kryoflux.com/viewtopic.php?f=3&t=6

-Pete Rittwage


On Thu, May 30, 2013 12:51 pm, Pete Rittwage wrote:
> On Thu, May 30, 2013 12:31 pm, silverdr@wfmh.org.pl wrote:
>> Still interesting.. in CBM drives we can access half-tracks because the
>> stepper is an 80 tracks one and the DOS moves it in double-steps. To
>> move
>> it in quarter-tracks would require different stepper I believe. Apart
>> from
>> this, if they need a special circuit to move it in quarter-tracks - does
>> it make any sense when the non-modified drive can't access those anyway?
>
> It's not a special circuit or a mod... it's more that there is no circuit
> there at all to do it for you.  You don't just tell the drive to step up
> or step down like the CBM, you manipulate the magnetic field coils a
> certain way to move the drive head (push-pull electromagnets) purely in
> software on the Apple.  Because of this, you have very free movement
> withing track boundaries.
>
> -Pete Rittwage
>
>
>        Message was sent through the cbm-hackers mailing list
>


       Message was sent through the cbm-hackers mailing list