Preserving a floppy disk with a logic analyzer and a serial cable

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DrF
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Preserving a floppy disk with a logic analyzer and a serial cable

Post by DrF » Wed Jan 09, 2019 9:40 am

Very interesting to me, cheaper than some dedicated hardware devices that do the same job.
Just wonder how cheap of a logic analyzer could you get away with?


https://www.chzsoft.de/site/hardware/pr ... -analyzer/

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Re: Preserving a floppy disk with a logic analyzer and a serial cable

Post by exxos » Wed Jan 09, 2019 10:58 am

Interesting idea.
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czietz
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Re: Preserving a floppy disk with a logic analyzer and a serial cable

Post by czietz » Wed Jan 09, 2019 5:56 pm

As the author of that article: I didn't try cheap analyzers, but I see no reason why it wouldn't work with one of those cheap Cypress FX2LP based analyzers. (Look for logic analyzers costing about 10 USD at AliExpress, for example.) The only disadvantage I see is reduced timing accuracy because they can only sample at maximum 24 MHz. In my setup, the Saleae analyzer operates at 40 MHz.

(Also of course, cheap analyzers have more general drawbacks, see here viewtopic.php?f=35&t=1342&p=13435#p13424, of which not all are relevant for this application.)

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