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IOUSBLowLatencyIsocFrame in callbacks

Hi,

my code is using the isochronous low latency technique based on IOUSBLowLatencyIsocFrames and reads them before the callback for that USB packet is triggered. Only those which have frStatus != kUSBLowLatencyIsochTransferKey, of course.

The question is - is it guaranteed that the frames passed to the callback have the same status and byte counter fields that those I read directly?

For some reason, on very few machines (ppc mostly), there seems to be different information from both contexts. But only after hours of streaming. Any hints, anyone?

Thanks,
Daniel
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