Re: Tips for making Twiggy images

well, time is not on my side. I'll rather grab this than wait for someone to write something.
It could be that using a logic analizer (like the DSlogic) with a simple arduino can do the trick, like sigrok with an extension or something, but i'm not a programmer. :-(

simon

On 16-02-15 19:58, Natalia Portillo wrote:
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> Hi Simon,
>
> El 16/2/15 a las 18:32, Simon Claessen escribió:
>>
>>
>>>> But you should think about one thing, that is, how much can you
>>>> read talking to the floppy controller, and how much it is
>>>> really stored in the disk. We'll need something like DiscFerret
>>>> to really know.
>>>>
>>>> Really why haven't someone yet taken a cheap ARM Msomething and
>>>> made one that works in a simple development board, like, say,
>>>> TI LaunchPad I don't know.
>>>>
>>>>
>>
>> well, at the moment I am playing with a kryoflux board with the
>
> Philosophically I'm against Kryoflux, being closed source and by a
> team with too much of an ego is against the very definition of museum.
>
> And in my museum I have a quite huge collection of floppies waiting
> for a better solution.
>
>> intention to grab all the floppie in out collection of the
>> computermuseum at hack42.nl that being 2,5", 3", 3.5" 5.25" 8" in
>> all kind of flavours. the Kryoflux works on the lowest level a
>> drive can generate as long as it can direct the heads though the
>> pinout on the drive, but a simple addon circuit to twiggy drives
>> should be possible. decoding the flux transitions is another thing
>> though...
>
> Decoding GCR should be quite easy. The sony GCR format is well
> documented afaik. Making the kryoflux work with the non-shugart bus,
> that's another thing, as its firmware is closed source you depend on
> them for that.
>
> If you can get to solder SMD and CPUs on boards, I suggest you
> DiscFerret. While Phil is not selling it anymore, it is wholly
> opensource, so anyone with the equipment (sadly I don't have) can
> build one by itself and enhance the firmware to talk to new buses.
> Also, it's more capable than KryoFlux, having been used to succesfully
> read MFM and RLL hard disks over a ST506 bus.
>
> http://discferret.com/wiki/DiscFerret
>
> I would love to get my hands on one of those.
>
> Regards,
> Natalia Portillo
>
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-- 
Met vriendelijke Groet,

Simon Claessen
drukknop.nl

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