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Xref: sserve comp.os.linux.misc:15235 comp.os.linux.development:9281 comp.os.386bsd.development:2147 comp.os.386bsd.questions:10374 comp.sys.ibm.pc.hardware.systems:3110 comp.sys.ibm.pc.hardware.storage:5706 comp.sys.ibm.pc.hardware.misc:5499 comp.periphs.scsi:20602 Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!msuinfo!agate!howland.reston.ans.net!EU.net!julienas!news-rocq.inria.fr!alix.inria.fr!soulard From: soulard@corto.inria.fr (Herve Soulard) Newsgroups: comp.os.linux.misc,comp.os.linux.development,comp.os.386bsd.development,comp.os.386bsd.questions,comp.sys.ibm.pc.hardware.systems,comp.sys.ibm.pc.hardware.storage,comp.sys.ibm.pc.hardware.misc,comp.periphs.scsi Subject: BusLogi 445S and DMA Channel Date: 22 May 1994 12:34:36 GMT Organization: INRIA Lines: 45 Sender: soulard@alix.inria.fr (Herve Soulard) Distribution: world Message-ID: <2rnjgs$g1l@news-rocq.inria.fr> Reply-To: soulard@sor.inria.fr NNTP-Posting-Host: alix.inria.fr Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Keywords: scsi buslogic bt445s Hello, I've just bought a BusLogic BT445S and I've a problem with the DMA channel. When I load the BusLogic DOS Manager, it reports that no DMA channel is used. The same thing is reported by the NetBSD installtion disk. I've read many times the Installation Guide, and nowhere I've seen the switches to use to set the DMA channel. Does somebody know how to solve this problem ? Here are the characteristics of my system : Orchid SuperBoard 486 DX2/66 VLB AMI Bios 06/06/92 20 Mbytes of RAM DC-200 Promise ISA IDE Cache Controller with 4 MBytes of cache 250 Mbytes Maxtor IDE Disk 340 MBytes Maxtor IDE Disk BusLogic 445S BIOS Version 4.72 FIRMWARE 3.37 40 MBytes SCSI Disk with ID 2 (1GBytes DEC disk is ordered) Cirrus Logic 5426 VLB Video Card 2Mo of video memory. The SCSI card works fine with DOS and with Linux 1.1.11. The only problem is that the DMA channel is not set. I've also tried the DMA test from the BIOS of the BT445S (g=dc00:9 under debug) and it reports no errors. So what is wrong ? Thanks for any future help. Herve Soulard. PS: I would prefer email answers.