From owner-freebsd-questions Mon Oct 5 11:26:49 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA27878 for freebsd-questions-outgoing; Mon, 5 Oct 1998 11:26:49 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from awfulhak.org (awfulhak.force9.co.uk [195.166.136.63]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA27861 for ; Mon, 5 Oct 1998 11:26:33 -0700 (PDT) (envelope-from brian@Awfulhak.org) Received: from woof.lan.awfulhak.org (brian@woof.lan.awfulhak.org [172.16.0.7]) by awfulhak.org (8.8.8/8.8.8) with ESMTP id TAA29405; Mon, 5 Oct 1998 19:25:07 +0100 (BST) (envelope-from brian@Awfulhak.org) Received: from woof.lan.awfulhak.org (brian@localhost [127.0.0.1]) by woof.lan.awfulhak.org (8.9.1/8.9.1) with ESMTP id KAA23591; Mon, 5 Oct 1998 10:41:08 +0100 (BST) (envelope-from brian@woof.lan.awfulhak.org) Message-Id: <199810050941.KAA23591@woof.lan.awfulhak.org> X-Mailer: exmh version 2.0.2 2/24/98 To: Greg Lehey cc: iyengar , freebsd-questions@FreeBSD.ORG Subject: Re: sio1 problem, ppp problem and 3com 3c905B-TX problem In-reply-to: Your message of "Mon, 05 Oct 1998 14:27:12 +0930." <19981005142712.X2545@freebie.lemis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 05 Oct 1998 10:41:07 +0100 From: Brian Somers Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG [.....] > IRQ 3 is normally reserved for sio1. You can't have two sio ports on > the same IRQ. This is a hardware limitation. [.....] > Greg > -- > See complete headers for address, home page and phone numbers > finger grog@lemis.com for PGP public key 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 , , Don't _EVER_ lose your sense of humour.... To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message