#: 21485 S12/OS9/68000 (OSK)
    26-Oct-96  09:46:15
Sb: #21484-Fast IRQ
Fm: Jost Eberbach 73502,2041
To: John Rodgers 73223,1204

Hi John,

no, there's hardly any activity here lately. I'm wondering if anyone else still
uses OS-9 at all! Have they all gone to use VxWorks?

Anyway, trying fast IRQs was a little disappointig for me. Using them may make
a difference on a system with many different interrupt sources, but on my
system it didn't increase the interrupt response time at all. With or without
fast IRQs, OS-9 gave me an average 20 (+/- 2) microseconds interrupt response
time on the MVME162. Could be a little faster, IMO, but for most applications
it's probably good enough.

Regards,

Jost

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