> > 
> 
> I have an asus A7V and have been having corruption problems for a good while.
> I especially have difficulties including lockups with heavy disk i/o. ( There
> are 3 hard drives on the promise /100 controller) 
> 
> This thread gave me hope that I'd be able to stabilize my system, but when I
> went into the BIOS setup screen and tried to turn off the parameters referenced,
> I can toggle the flag to disable, but when I revisit the screen right afterwards
> or after a power cycle reboot, the flags are still enabled for read caching and the
> delayed transaction stuff. I updated the bios to no result. 
> 
> Is there a way to make this happen in the netbsd driver?

you need o have chipset docs to set this values. probably it's impossible
to obtain :(

IMHO the only right solution is not buying by-design-broken hardware.