Date: Wed, 10 Apr 2013 00:42:29 +0400 From: Lev Serebryakov <lev@FreeBSD.org> To: John Baldwin <jhb@freebsd.org> Cc: Adrian Chadd <adrian@freebsd.org>, freebsd-current@freebsd.org, Poul-Henning Kamp <phk@phk.freebsd.dk> Subject: Re: Intel D2500CC motherboard and strange RS232/UART behavior Message-ID: <1054103295.20130410004229@serebryakov.spb.ru> In-Reply-To: <201304091608.09257.jhb@freebsd.org> References: <229402991.20130407172016@serebryakov.spb.ru> <5847.1365365701@critter.freebsd.dk> <CAJ-Vmo=_9rL4FarGqBS0BkC-vPg=LbFt3boYk73QijaB6=0Q-A@mail.gmail.com> <201304091608.09257.jhb@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Hello, John. You wrote 10 =E0=EF=F0=E5=EB=FF 2013 =E3., 0:08:09: >> .. did we really break shared interrupt handling on ISA? JB> When did it ever work? sio has special hacks to make it work, and in my experience, it worked around FreeBSD 4 (or even 3? I've started with 2.2.2, but it was later), when I had some systems with multiple internal ISA modems (does anybody remember word "FIDO" here?) >> God, you made me remember ISA interrupt sharing. I thought the main >> source of evilness is edge shared interrupts? JB> Right, and ISA are edge and active-hi, so generally not shareable. As far as I remember, it is changeable. But I could be wrong here. JB> Can you assign different interrupts via the BIOS somehow? I'll try. I could disable uart2 and 3 for sure, and then uart0 and uart1 will have unique standard (4 and 3) IRQ. I'll try it tomorrow. --=20 // Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1054103295.20130410004229>