The effect of -dd0/-dd1 option

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The effect of -dd0/-dd1 option

Post by ZrX » Sun Jan 07, 2018 7:58 pm

This is the result of what a floppydrive outputs when dumping the same C64 floppy alternating using the -dd0 and -dd1 switches on DTC.
X axis are all the tracks from left to right of a single side.
Y axis is flux change width increasing from bottom to top.

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Re: The effect of -dd0/-dd1 option

Post by brightcaster » Tue Feb 06, 2018 11:17 am

Wouldn't it be nice to see DTC switching by itself to the other mode and vice versa if a read attempt fails? That would be a great feature for the format alligned modes!


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Re: The effect of -dd0/-dd1 option

Post by IFW » Tue Feb 06, 2018 12:31 pm

Interesting idea actually, but only if it's optional, e.g. on some drives simply produce noise in one setting...
It is also worth keeping in mind that it requires 500ms+ to reliably switch the density line not to mention RPM switching (usually) between 300 and 360.

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Re: The effect of -dd0/-dd1 option

Post by Brodbeck » Fri Feb 23, 2018 12:37 pm

This is an interesting idea indeed. Do you think what you're suggesting could be done easily?

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