piix4 fails to reset? (ticket #1078)

Mark Studebaker mds at paradyne.com
Sun Dec 29 03:34:15 CET 2002



Joe Drew wrote:
> On Fri, 2002-12-20 at 10:09, Joe Drew wrote:
> 
>>On Thu, 2002-12-19 at 16:31, Philip Edelbrock wrote:
>>
>>>Humm, I don't suppose you can connect a scope to SDA and SCL to see what 
>>>is happening?  It sounds like a hardware flaw. :'(
>>
>>Actually, this could be possible. But - SDA looks like part of the IDE
>>interface?
> 
> 
> Never mind, I see them on the DIMM connector. Problem is, they're not
> very accessable, even when I have a board out here on my desk. From
> within the racks it'll be impossible, I'm afraid.
> 
> Even so, the second question still stands:
> 
> 
>>As well, what *should* these lines show on the scope?
> 
> 
> 

SDA and SCL should both be high when the bus is idle.



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