Re: ATA/133 Problems with multiple cards

[James Stevenson]

Hi,

i did actually kind of get the card's working together but ran into
another problem.

when i boot with ide=nodma and then turn on dma manually on all the other 
cards / board chipset etc... they all function fine

then i can only turn the dma up to ATA/100 if i set it to ata/133 it will
cause the errors. I assume this is something todo with the promise bois
not setting up the 3rd card at boot time. It only shows drive listing for 
2 of the 3 cards.

Unfortunatly this generated another problem.
When read from both drives at the same time it functions normally and
see resonable performance. When i attempt to write to both drives it will
cause the machine to lockup.


	James

On Thu, 14 Oct 2004, Bartlomiej Zolnierkiewicz wrote:

> On Thu, 14 Oct 2004 13:12:42 -0500, Ian Pilcher <i.pilcher@xxxxxxxxxxx> wrote:
> > James Stevenson wrote:
> > >
> > > i seem to have run into an annoying problem with a machine which has
> > > 3 promise ata/133 card the PDC20269 type.
> > >
> > 
> > ....
> > 
> > >
> > > Does anyone have an explenation of why this can happen ?
> 
> * check power supply
> * compare PCI config space of the "failing" controller to the one which
>   is "working" (assuming that identical devices are connected to each),
>   maybe firmware/driver forgets to setup some settings
> 
> > Promise cards don't support more than two per machine.  If you can get a
> > third card to work in PIO mode, consider it an added (but unsupported)
> > bonus.
> 
> AFAIR people have been running 4-5 cards just fine
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