Writing 8" floppies with SuperCard Pro
JoshD at LivingComputerMuseum.org
Tue Aug 11 19:53:45 CDT 2015
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Chuck Guzis
Sent: Tuesday, August 11, 2015 5:42 PM
To: General at classiccmp.org; Discussion@
Subject: Re: Writing 8" floppies with SuperCard Pro
> On 08/11/2015 05:27 PM, Josh Dersch wrote:
>> The issue is that upon reading back a disk that has been written via
>> the SuperCard, data is fine up until about cylinder 60, at which point
>> bad sectors start appearing more and more frequently (though most of
>> the data is still OK). I tried disabling TG43 just to see if it made
>> a difference, and it does - with TG43 disabled sectors written past
>> cylinder 43 read back as garbage.
>> I'm running short of ideas. Anyone else have any experience with this
>> combo? Any suggestions on troubleshooting tips?
> So what does the software do to compensate for bit crowding/shifting
> when writing to the inner cylinders? That is, what sort of write
> precompensation does it perform?
Absolutely no idea -- the manual isn't particularly technical and the SDK mentions nothing. I'll see if there's anything to be dug up in this regard. (Thanks also to Eric for suggesting this problem...)
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