*BSD News Article 34324


Return to BSD News archive

Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!msuinfo!agate!usenet.ins.cwru.edu!magnus.acs.ohio-state.edu!cis.ohio-state.edu!bounce-bounce
From: wood@cis.ohio-state.edu (joel braden wood)
Newsgroups: comp.os.386bsd.misc
Subject: > 16 megs of ram
Date: 14 Aug 1994 16:25:49 -0400
Organization: The Ohio State University Dept. of Computer and Info. Science
Lines: 32
Distribution: world
Message-ID: <32lukdINNrma@soccer.cis.ohio-state.edu>
NNTP-Posting-Host: soccer.cis.ohio-state.edu


I thought FreeBSD 1.1.5 was supposed to be able to handle greater than
16 megs of ram for any machine type, but when I boot only 16 out of my 24
megs are recognized.  Is there something special that I need to do to get
the other 8 working?



Joel B Wood
wood@cis.ohio-state.edu


Note from the FAQ:
____________________________________________________________________
1.5:  I have 32MB of memory, should I expect any special problems?
 
If you have an IDE controller, no.  Likewise, if you have a full EISA
system with EISA disk controller or a working local bus controller
(read further) you'll have no problems. If you have an ISA system, or
an EISA system with an ISA disk controller then you will most
certainly have problems with the upper 16MB of memory due to the ISA
24 bit DMA limitation (which ISA cards in EISA systems will also
exhibit).  If you have a local bus disk controller, then you should be
OK, UNLESS it's a Buslogic Bt445S with a revision less than `D' (BIOS
3.36 or earlier).
 
<1.1.5>
1.1.5 has bounce-buffer support that make all of the above scenarios work
with a full 32MB of memory or more.  You are therefore advised to simply pull
16MB of memory out, install, and then see about upgrading to FreeBSD 1.1.5
so that you can put it back.