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Xref: sserve comp.os.mach:3921 comp.unix.bsd:14102 comp.unix.pc-clone.32bit:6451 comp.os.386bsd.development:2236 Newsgroups: comp.os.mach,comp.unix.bsd,comp.unix.pc-clone.32bit,comp.os.386bsd.development Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!hookup!news.moneng.mei.com!howland.reston.ans.net!spool.mu.edu!news.clark.edu!netnews.nwnet.net!serval!beta.tricity.wsu.edu!msmith From: msmith@beta.tricity.wsu.edu (Mark Smith) Subject: Re: More Details on the 386BSD Release 1.0 CD-ROM Message-ID: <1994May26.052644.28835@serval.net.wsu.edu> Sender: news@serval.net.wsu.edu (USENET News System) Organization: Washington State University Tri-Cities References: <jmonroyCq1qK0.5vJ@netcom.com> <VIXIE.94May19144247@office.home.vix.com> <2s19rb$77v@acmex.gatech.edu> Date: Thu, 26 May 94 05:26:44 GMT Lines: 22 In article <2s19rb$77v@acmex.gatech.edu>, Jeff M. Garzik <gtd543a@prism.gatech.edu> wrote: >In article <VIXIE.94May19144247@office.home.vix.com>, >Paul A Vixie <vixie@vix.com> wrote: >>there are only 24 address lines on an ISA bus. if you know a chip set that >>can address more than 16MB of memory using those 24 address lines, please >>tell us all about it. > >My pure-ISA motherboard has 8 SIMM slots instead of the normal 4, and I >ran 24MB just fine under OS/2. Of course, I don't know what it was >doing... it may or may not have been using those 24 address lines, I >dunno. ;-) Just stating a case... You're mistaking the MEMORY bus (the CPU, memory and etc.) with the ISA expansion bus. Two totally different creatures! The ISA controler only has 24 lines, there for the 16MB limit on memory access by ISA devices! The CPU/memory bus is a full 32 bits wide which allows you to pop in as much memory as your motherboard is physically designed to handle up to 4Gig. So, in the end, both parties are correct, but for different pieces of the motherboard. Mark