03-12-2014, 12:47 PM
Ah, I think that explains it then! I originally used the 360K option as what I felt to be closest to the 180K (40 track single-sided) Spectrum +3 / Amstrad CPC format. I will have done my original 3" drive test using that setting.
I later noticed the Atari 800 set up the 40 tracks and 1 side, so it seemed convenient to use that preset rather than setting the range manually, without realising the double-step side-effect. I probably haven't used the 3" drive since changing to that.
It sounds like Philippe just needs to use the 360K preset, then manually change the track range to be 42 tracks and head 0 only. For +3/CPC I'm also turning off the Blind Mode option, to ensure that data fields extending into the index area are complete. The default of 2 revolutions seems to be plenty.
I later noticed the Atari 800 set up the 40 tracks and 1 side, so it seemed convenient to use that preset rather than setting the range manually, without realising the double-step side-effect. I probably haven't used the 3" drive since changing to that.
It sounds like Philippe just needs to use the 360K preset, then manually change the track range to be 42 tracks and head 0 only. For +3/CPC I'm also turning off the Blind Mode option, to ensure that data fields extending into the index area are complete. The default of 2 revolutions seems to be plenty.