Re: Reading non-MFM disks in PC with a "small adapter"

From: Hársfalvi Levente (levente_at_terrasoft.hu)
Date: 2001-11-20 17:03:12

Hi!

Nicolas Welte wrote:
>
> I don't know if there are any alignment problems (i.e. the head not being
> centered correctly on the tracks), but there are for sure problems with the
> head stop, because there is an offset of maybe three tracks between the two
> heads, and it is mechanically impossible for the upper head to read the first
> few tracks of a flipped disk.

Yep, meanwhile I read the drive hack hint in the Catweasel manual you
mentioned.

Hmmm... Putting a LED beside the photo resistor... Checking 'MOTOR if
it's active, and if it is, and there's no 'INDEX, start flashing, does
it sound like a good idea? ;-)

Also... A really weird idea has popped up in my mind, regarding the
100tpi / 96 tpi problem. Pulsing 'STEP by some 100kHz, and rotating a
8-chain PWM bitmask on the 'DIR pin, hmmm? ;-)

(I know different drives would react differently, and it would also need
additional attention of the software, but still this should be the only
possibility to make it (if at all)).



L.

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