From owner-freebsd-hardware Fri Jun 28 09:47:47 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id JAA12932 for hardware-outgoing; Fri, 28 Jun 1996 09:47:47 -0700 (PDT) Received: from mole.mole.org (marmot.mole.org [204.216.57.191]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id JAA12927 for ; Fri, 28 Jun 1996 09:47:44 -0700 (PDT) Received: (from mail@localhost) by mole.mole.org (8.6.12/8.6.12) id QAA20550; Fri, 28 Jun 1996 16:19:20 GMT Received: from meerkat.mole.org(206.197.192.110) by mole.mole.org via smap (V1.3) id sma020546; Fri Jun 28 16:19:10 1996 Received: (from mrm@localhost) by meerkat.mole.org (8.6.11/8.6.9) id JAA24043; Fri, 28 Jun 1996 09:19:10 -0700 Date: Fri, 28 Jun 1996 09:19:10 -0700 From: "M.R.Murphy" Message-Id: <199606281619.JAA24043@meerkat.mole.org> To: msmith@atrad.adelaide.edu.au, stesin@elvisti.kiev.ua Subject: Re: muliport boards - building a PPP dialup server Cc: hardware@FreeBSD.org, Kevin_Swanson@BLaCKSMITH.com Sender: owner-hardware@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk > > Not to mention the fact -- at least some models of > Digiboard have a speed limit of 57600; and despite > of their intelligence, I can't tell for sure that 16port Digi > really saves you so much CPU compared to 16x16550. > (Don't know is it a driver problem; but I have seen > a situation recently, when people (using BSDi) are > going back to FIFOed 16550s from Digiboard, because > of... CPU limitations). > A thing to watch out for is that the multi-16550 boards (I'm familiar with Digiboard 8-port and HUB-6 with 16550) generate a LOT of heat. Good cooling is required. Especially with more than one board in a system. -- Mike Murphy mrm@Mole.ORG +1 619 598 5874 Better is the enemy of Good