From owner-freebsd-hackers Sat Nov 16 05:53:58 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id FAA29968 for hackers-outgoing; Sat, 16 Nov 1996 05:53:58 -0800 (PST) Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id FAA29963; Sat, 16 Nov 1996 05:53:54 -0800 (PST) Received: (from msmith@localhost) by genesis.atrad.adelaide.edu.au (8.8.2/8.7.3) id AAA11442; Sun, 17 Nov 1996 00:23:43 +1030 (CST) From: Michael Smith Message-Id: <199611161353.AAA11442@genesis.atrad.adelaide.edu.au> Subject: Re: IRQ sharing on PCI? In-Reply-To: <199611161242.XAA17993@godzilla.zeta.org.au> from Bruce Evans at "Nov 16, 96 11:42:50 pm" To: bde@zeta.org.au (Bruce Evans) Date: Sun, 17 Nov 1996 00:23:42 +1030 (CST) Cc: mrcpu@cdsnet.net, se@FreeBSD.ORG, hackers@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL28 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Bruce Evans stands accused of saying: > > Doesn't a typical system have only 3 or 4 PCI slots and many more > than 3 or 4 IRQs, so it is hard to run out of IRQs? Mine has 3 > PCI slots, all full (:-(), and they get assigned irqs 10, 11 and > 12 (one wasted for vga0). You obviously don't have a sound card, or serial ports, or network cards. Only you do, and I think you're being stubborn 8) A "typically" configured PC has enough interrupt resources, but there are cards like the GUS PnP that can consume 2 or 3 or 4 interrupts themselves (being poorly designed) which cause major grief. My notebook has "just enough" interrupts, with two PCCARDs inserted there are none free, if I had the docking station for it, I would be short (and cross 8( ). > Bruce -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[