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Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!msuinfo!agate!violet.berkeley.edu!jkh From: jkh@violet.berkeley.edu (Jordan K. Hubbard) Newsgroups: comp.os.386bsd.questions Subject: Re: ISA SCSI controllers and 32Mb RAM Date: 21 Sep 1994 10:39:22 GMT Organization: University of California, Berkeley Lines: 21 Message-ID: <35p2gq$8ef@agate.berkeley.edu> References: <17037A9A8S85.JOSE@olis.lib.ox.ac.uk> NNTP-Posting-Host: violet.berkeley.edu In article <17037A9A8S85.JOSE@olis.lib.ox.ac.uk>, <JOSE@olis.lib.ox.ac.uk> wrote: >I understand that ISA SCSI controllers have problems when used in machines >with more than 16Mb of RAM. Is this true for all ISA SCSI controllers? Yes. The ISA DMA address space is only 24 bits wide. >I have been told that more recent versions of FreeBSD have a fix for >this problem in the form of 'bounce' buffers. Can somebody tell me what >version of FreeBSD has this? 1.1.5 and later. >Another possibility is to get a large 540Mb or 1Gb IDE drive. Would >FreeBSD support IDE drives of this size? Many thanks for you help. Sure, I see no problem with a large IDE drive. Jordan