Intel D2500CC motherboard and strange RS232/UART behavior

[Poul-Henning Kamp]

In message <201304111050.37055.jhb at freebsd.org>, John Baldwin writes:

>> Though if these ports don't have the logic that the AST cards did to
>> share the IRQ, that'd make it hard...
>> 
>> The sio man page talks about this...
>
>These are multiport cards and something like puc or digi, etc. is fine for
>those.  The OP's issue is that he has a board with 4 independent 16550
>UARTs which are attempting to share IRQs.  Those are not multiport cards
>and are thus a separate issue.

I think you are mistaken, the 4 uarts are in the same chip and I am
sure they have done something sensible with the interrupts so they
can be shared.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.