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 listReceived on 2013-05-30 17:01:52
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