Date: Thu, 11 Apr 2013 21:37:48 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: John Baldwin <jhb@freebsd.org> Cc: John-Mark Gurney <jmg@funkthat.com>, lev@freebsd.org, Adrian Chadd <adrian@freebsd.org>, freebsd-current@freebsd.org Subject: Re: Intel D2500CC motherboard and strange RS232/UART behavior Message-ID: <1449.1365716268@critter.freebsd.dk> In-Reply-To: <201304111050.37055.jhb@freebsd.org> References: <229402991.20130407172016@serebryakov.spb.ru> <201304101016.57894.jhb@freebsd.org> <20130411070139.GR76354@funkthat.com> <201304111050.37055.jhb@freebsd.org>
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In message <201304111050.37055.jhb@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 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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