Date: Mon, 05 Oct 1998 10:41:07 +0100 From: Brian Somers <brian@Awfulhak.org> To: Greg Lehey <grog@lemis.com> Cc: iyengar <SanatanaDharma@email.msn.com>, freebsd-questions@FreeBSD.ORG Subject: Re: sio1 problem, ppp problem and 3com 3c905B-TX problem Message-ID: <199810050941.KAA23591@woof.lan.awfulhak.org> In-Reply-To: Your message of "Mon, 05 Oct 1998 14:27:12 %2B0930." <19981005142712.X2545@freebie.lemis.com>
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[.....]
> IRQ 3 is normally reserved for sio1. You can't have two sio ports on
> the same IRQ. This is a hardware limitation.
[.....]
> Greg
> --
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Hmm, I don't think it's a hardware limitation - AFAIK, it's a sio
driver limitation.
Isn't it possible to have more than one UART generate IRQ3 and have
the driver ask each UART if it's got anything to do ? I don't know
if this IRQ/polling setup would prevent ``fast interrupt'' handling
though.
--
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <brian@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour....
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