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Newsgroups: comp.os.386bsd.questions Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!agate!howland.reston.ans.net!ira.uka.de!smurf.sub.org!flatlin!bad From: bad@flatlin.ka.sub.org (Christoph Badura) Subject: Re: 386bsd with >16M Organization: Guru Systems/Funware Department Date: Wed, 28 Apr 1993 17:25:56 GMT Message-ID: <C67F39.Eov@flatlin.ka.sub.org> References: <g89r4222.735937533@kudu> <C677BI.20Dz@austin.ibm.com> Lines: 18 In <C677BI.20Dz@austin.ibm.com> guyd@austin.ibm.com (Guy Dawson) writes: >The ISA bus has 24 address lines so ANY card attempting DMA can only >do so with the first 16MB of memory. That's only correct for busmaster DMA devices. Devices that use the mainboard's DMA controller have the same problems for similar reasons though. >> Is this due to problems with possibly trying to do DMA from the >> network card (WD)? >Almost certinally... Most certainly not because the WD80xx driver doesn't use DMA. -- Christoph Badura --- bad@flatlin.ka.sub.org Personally, I don't care whether someone is cool enough to quote Doug Gwyn--I only care whether Doug Gwyn is cool enough to quote. -- Larry Wall