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Xref: sserve comp.os.linux.misc:15702 comp.os.linux.development:9582 comp.os.386bsd.development:2193 comp.os.386bsd.questions:10475 comp.sys.ibm.pc.hardware.systems:3222 comp.sys.ibm.pc.hardware.storage:5896 comp.sys.ibm.pc.hardware.misc:5713 comp.periphs.scsi:20795 Path: sserve!newshost.anu.edu.au!munnari.oz.au!bunyip.cc.uq.oz.au!harbinger.cc.monash.edu.au!msuinfo!agate!howland.reston.ans.net!EU.net!sun4nl!news.nic.surfnet.nl!tuegate.tue.nl!news.win.tue.nl!news.eb.ele.tue.nl!news.eb.ele.tue.nl!not-for-mail From: wjw@ebh.eb.ele.tue.nl (Willem Jan Withagen) 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: Re: BusLogi 445S and DMA Channel (NEW ANSWER) Date: 26 May 1994 18:37:20 +0200 Organization: Digital Information Systems Group, Eindhoven University of Technology Lines: 39 Distribution: world Message-ID: <2s2j80$1go@ebh.eb.ele.tue.nl> References: <2rnjgs$g1l@news-rocq.inria.fr> <2rs5i1$6tl@news-rocq.inria.fr> <2rs8go$6tl@news-rocq.inria.fr> NNTP-Posting-Host: ebh.eb.ele.tue.nl Keywords: scsi buslogic bt445s This news group always manages to confuse me! :-( Are we talking about NetBSD in the message below? In article <2rs8go$6tl@news-rocq.inria.fr> soulard@sor.inria.fr writes: => > Conclusion: => > => > It is possible to use the DMA channel by unsetting the switch 10, => > but this should not be used, especially if you have more than => > 16M bytes of memory. => > => > Bus mastering is better, so use a system that supports it. DOS, => > Linux and FreeBSD work fine with Bus mastering, NetBSD-0.9 requires => > DMA channel. => => OK, my conclusion is wrong. Bus mastering works with NetBSD-0.9. The => problem was that because my Linux says that the 445S is a 1542 card, => I've used the kc-aha-09.fs image to boot NetBSD. => => Drew Hess just points me that I can use the kc-ahbbt-09.fs image that => uses the BT742A device driver. This driver actually uses bus mastering. => => So everything is perfect with the 445S with any system. I was just => on the wrong way. Because this starts me wonder which kernel I should use with my 445S REV D board under FreeBSD. I'm using the AHA kernel which works great for 16Mb But I'm waiting for the 3.37 Eprom to go to 32MB. Should I use the BT kernels for FreeBSD Thanx in advance for getting things cleared, WjW -- Digital Information Systems Group, Tel: +31-40-473401, Fax: +31-40-433066 Room EH 10.35 Eindhoven University of Technology P.O. 513, 5600 MB Eindhoven, The Netherlands TEAM OS/2 Internet:wjw@eb.ele.tue.nl