> A 450MHz PII processor isn't really up to the task. Jim Dixon, who
> designed the card, recommends at least a 733MHz PIII, based on his
> experience with the original BSD driver. I am able to run one as a dual
It shouldnt matter. If its entirely tied to ISA bus performance you should
be able to run it on 486 quite honestly.
> card, and about 1/2 the time for a dual E1 card. This really sucks, and
> needs to be addressed when the more serious long term PCI version of the
> card goes through.
or hang a small CPU on it and shove it on USB since USB can do isosynchronous
> > >chipsets, particularly what event might be occuring once per second and
> > >disabling interrupts for a couple of hundred microseconds? Thanks!
>
> I think you are trying one board that is close to the limit, and one
> just beyond. Simple as that.
And quite a few chipsets steal cycles for other things (memory refresh, ram
thermal limiting and the like). With the Z85230 driver which also at high
speed really tests ISA bus throughput I regularly saw PCI boxes getting
worse performance than ancient all ISA relics. Throughput was also comparable
between a K5 and a PII/233
> Good idea. I'll have to try that. There always seem to be lots of
> problem reports about IOAPIC, though. Should I trust it?
The problems with the IO apic are generally bios, however there is one
concern I have. APIC is a message passing bus so doesnt have a guaranteed
delivery time.
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