Date   : Wed, 15 Dec 2004 21:17:54 +0000 (GMT)
From   : Sprow <info@...>
Subject: Re: Debugging ADFS and IDE drives

In article <041215005502@...>,
   Jonathan Graham Harston <jgh@...> wrote:
> > Message-ID: <041213145502@...>
>  
> Yes! YES! *YES!* <fx: pulls clenched fist down, lifting knee slightly>
>  
> It works!

Sounds like it's all down hill from here now.

Perhaps better off list, but I remember seeing something weird on reads
where the status byte (the one that's normally &58) worked only if I was
stepping through the drive backwards. It was the black drive you sent to me,
but my Conner drivers didn't do it so I ignored it - this was on the
stripboard interface. Was the status byte for a sector with &FF at the end I
wonder?

Worth checking your 1MHz bus terminators, I don't buy the ground bounce idea
as there's acres of low impedance copper on the back of the board, but I
like Pete's idea of trying some other magic patterns
 eg. &FF/&FE
 so what does &FF/&7F do?
 what about a few sectors of alternating &AA/&55

The 1MHz bus is so slow my money would be dodgy drive!
Sprow.