>
> Sorry, took me a while to answer.
> Thanks for offering help.
> I played a little bit around and it seems to be a hardware - software problem.
> I tested following softwareconfigs without success:
> redhat 6.2, kernel 2.2.18, rtlinux 3.0 (kde 1.1.2)
> redhat 6.0, kernel 2.2.18, rtlinux 3.0 (without gui)
> redhat 6.0, kernel 2.4, rtlinux 3.0 (without gui)
>
> Then I changed from my asus cuv4x-d with ONE P3-1000 - is a dual machine with via
>chiset and 133mhz fsb processor, singleprocessor kernel.
> to a asus p2b with bx chipset and P2-333 (redhat6.2, kernel 2.2.18 and rtlinux 3.0
>and kde 1.1.2) and no crashing problems anymore!
>
> I have a rtlinux interrupthandler (that calls a thread) running. Reading from a a/d
>card, writing this to a fifo and writing it back to a d/a card.
> For starting and stopping I use a fifo too (handler).
> My a/d card "interrupts" all 50us.
>
> On the P3-1G this works fine IF no programm reads the fifos from the linux side.
>('cat' the fifo is also a killer) If the fifo is red than the system
> crashs.
> Everything is fine on the slow machine. The d/a output values are correct, I get the
>right through the fifos, nice and stable - everything fine.
>
> Because all works fine on the slow machine I think it must be a 'more complex'
> software-hardwareproblem somewhere. Although I'm not a professoinal
> programmer...
> If someone has a hint... thanks!
If a AD card works in a slow box and fails in a fast box then I would say
its a hardware problem not software . I would check if the old box was
using the same PCI version (I guess its PCI v1 not v2.0/v2.1) and check
if the card actually is capable of working with the newer PCI standard .
hofrat
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