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Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!yarrina.connect.com.au!classic.iinet.com.au!news.uoknor.edu!news.ecn.uoknor.edu!paladin.american.edu!howland.reston.ans.net!math.ohio-state.edu!jussieu.fr!news.univ-angers.fr!news.univ-rennes1.fr!irisa.fr!usenet From: leconte@irisa.fr (Thierry Leconte) Newsgroups: comp.unix.bsd.netbsd.misc Subject: Re: NetBSD/i386 and IDE block mode Date: 18 May 1995 11:17:27 GMT Organization: IRISA-INRIA, Campus de Beaulieu, F-35042 Rennes Cedex Lines: 27 Distribution: world Message-ID: <3pfac7$t2t@news.irisa.fr> References: <3pevgv$h1d@carol.fwi.uva.nl> Reply-To: leconte@irisa.fr NNTP-Posting-Host: spam.irisa.fr In article <3pevgv$h1d@carol.fwi.uva.nl>, frank@fwi.uva.nl (Frank van der Linden) writes: > bouyer@ensta.fr (Manuel Bouyer) writes: > > >In article <3p72h9$384@news.irisa.fr>, leconte@irisa.fr (Thierry Leconte) writes: > >> > >> Does NetBSD is able to use the IDE disks in block mode ? > > >When probing ide disks -current prints: > >>wd0 at wdc0 drive 0: 240MB, 895 cyl, 10 head, 55 sec, 512 bytes/sec <Conner Peri > >pherals 240MB - CP30254> > >>wd0: using 16-sector 16-bit pio transfers, chs addressing > > That means it's using cyl/head/sector addressing. I can't give the > output of my own machine at the moment (because it's about 1500km > away from me), but I have NetBSD-current running on it and using > 'lba adressing' on a maxtor 540 Mb disk, I assume that is what Thierry > meant. Not what I meant is a special mode that some IDE drive are capable of : It consist to send to the drive more than one command (read/write sector) at a time. As interrupt are used to indicate the end of commands, with block mode you get only one interrupt for a set of commands insteed of one by command. Thierry