*BSD News Article 80090


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From: Charlie Root <dennisg@seanet.com>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Max. Addressable Physical Memory
Date: Mon, 07 Oct 1996 00:38:58 -0700
Organization: Seanet Online Services, Seattle WA
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To: tundra@tundraware.com

Tim Daneliuk wrote:
> 
> My FreeBSD 2.1.5 systems runs on a Gateway 90Mhz Pentium motherboard.
> I recently upgraded from 16MB to 80MB (2-32M and 2-8M SIMMS).  The
> POST sees all 80MB, but FreeBSD sees only the first 64MB.  Is there
> some inherent FreeBSD limitation here or is this a problem 'cause I
> mixed SIMM sizes?
> 
> --
> ------------------------------------------------------------------------------
> Tim Daneliuk / tundra@tundraware.com
> Voicemail/FAX 847.827.1706


you must recompile your kernel.
the following options are from my kernel.
notice the MAXMEM=81920. Thsi is documented in the FAQ, and in LINT.

options         INET
options         FFS
options         MFS
options         "COMPAT_43"
options         NO_SCSI_SENSE
options         "SCSI_DELAY=5"
options         "MAXMEM=81920"
options         UCONSOLE
options         SYSVSHM
options         SYSVSEM
options         SYSVMSG