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Date: Fri, 12 Apr 2013 17:18:22 +0400
From: Lev Serebryakov <lev@FreeBSD.org>
Organization: FreeBSD
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To: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
Subject: Re: Intel D2500CC motherboard and strange RS232/UART behavior
In-Reply-To: <1449.1365716268@critter.freebsd.dk>
References: <229402991.20130407172016@serebryakov.spb.ru>
 <201304101016.57894.jhb@freebsd.org> <20130411070139.GR76354@funkthat.com>
 <201304111050.37055.jhb@freebsd.org> <1449.1365716268@critter.freebsd.dk>
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Cc: John-Mark Gurney <jmg@funkthat.com>, freebsd-current@freebsd.org,
 Adrian Chadd <adrian@freebsd.org>
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Hello, Poul-Henning.
You wrote 12 =D0=B0=D0=BF=D1=80=D0=B5=D0=BB=D1=8F 2013 =D0=B3., 1:37:48:

PHK> I think you are mistaken, the 4 uarts are in the same chip and I am
PHK> sure they have done something sensible with the interrupts so they
PHK> can be shared.
 I mean, there is no good way to distinguish between this (hardware)
 implementation and "true" 4 single UART chips, when it is identify
 itself as "generic 16550 UART", 4 times, at 4 I/O addresses.

--=20
// Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>