On Wed, Sep 06, 2000 at 09:01:04AM -0500, Sheldon Hoffman wrote:
> And as Victor says that, it would also add additional time, albeit
> only a few instructions, to the processing of each interrupt.
Cache misses too!
> The fifo handler gets control, processes the "command" (from the
> linux process to initialize the card) correctly and exits. Then the
> machine freezes and I have to power boot it. I see plenty of
What's the fifo handler code? Remember this code runs in Linux kernel
context, not RT context.
> Strangely, this is not repeatable. When I reboot and rerun the
> test, it works perfectly! The card initialization code is identical
> to the code that works with the DOS software. So I'm reasonably
> sure that I'm not mucking up something with the pci-das-1602.
> Besides, all the initialization appears to run correctly (from
> the messages I see on the mono monitor).
I think it's a hardware init problem. Try using rtl_no_interrupts
around the init code.
--
---------------------------------------------------------
Victor Yodaiken
Finite State Machine Labs: The RTLinux Company.
www.fsmlabs.com www.rtlinux.com
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