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Re: Questions about interrupt response!

OSR_Community_UserOSR_Community_User Member Posts: 110,217
[email protected] said:
> The PCI card that I have designed would signal interrupt every 6ms. I
> just wonder whether it is possible for my winNT4.0 (on a HPLH3000
> Server) to response to the interrupt without skipping over any
> interrupt.

Probably. In general, that will probably be fine, but I think you will
find that interrupts will be occasionally missed. If your hardware cannot
cope with that, you're sunk.

Some of the best things you can do to improve interrupt latency are
to avoid ISE disk drives (though a bad SCSI driver can mess you up too)
and watch out for cheap consumer quality video cards. In situations
similar to yours, I've seen NT occasionally block interrupts for fright-
fully long periods of time when accessing certain of these devices.
Steve Williams "The woods are lovely, dark and deep.
[email protected] But I have promises to keep,
[email protected] and lines to code before I sleep, And lines to code before I sleep."
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