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Subject: Re: writing OOPS/panic info to nvram?
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Paul Mackerras <paulus@au1.ibm.com>
Cc: "J.A. Magallon" <jamagallon@able.es>, Remco Post <r.post@sara.nl>,
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On Thu, 2002-09-05 at 00:34, Paul Mackerras wrote:
> IDE was relatively straightforward since you can do basic block I/O
> with just the ATA-1 or ATA-2 registers and command set and PIO.  In
> contrast, I believe SCSI defeated him. :)

You have to reset and retune the interface/controller registers as well,
otherwise bad things can happen. Rusty will be happy to know that next
generation SATA drops the PIO interface for a demented PIO via DMA setup
8)

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