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Date: Mon, 16 Feb 87 15:04:41 EST
From: katinsky@gauss.rutgers.edu (David Katinsky)
To: rms@prep.ai.mit.edu
Subject: 3b2 procedure to raise MAXMEM
Below is the procedure I followed to allow enough memory for GnuEmacs to run
on my 3b2/400. The end result of this is that a process can snarf up to 2Mb
of memory. This can be a bit dangerous on a 2Mb machine, but I tried it and
it worked ok.
-------------------------------------------------------------------------------
In the simplest case, these are the procedures to reconfigure a 3bx kernel.
1] cd /etc/master.d
`ls` shows the files to be:
README ctc* hdelog idisk ipc iuart kernel mau
mem msg ports* prf sem shm stubs sxt
sys xt
2] Edit the file which contains the parameter[s] you wish to change.
In the following excerpt from /etc/master.d/kernel the value MAXMEM
was raised from 256 to 1024.
In V.3.0 and later releases, the parameter in question is MAXUMEM
instead of MAXMEM.
*
* The following entries form the tunable parameter table.
*
NCALL = 30
NPROC = 60
NTEXT = 58
NCLIST = 188
* maxmem is number of pages (2K) was 256 --dmk
MAXMEM = 1024
MAXUP = 25
* hashbuf must be a power of 2
NHBUF = 128
NPBUF = 8
3] cd /boot
4] mkboot -k KERNEL
5] shutdown -i5 -g0 -y
This will take the machine down and bring it back up into firmware
mode. When you see that the machine has reached this state, type the
firmware password (default=mcp). The machine will ask for the name of
a program to execute. At this prompt enter /etc/system . The machine
should start to boot and display its configuration data.
8701271222 dmk
[katinsky@topaz.rutgers.edu]
-------------------------------------------------------------------------------
I do not feel that having the default firmware password is a
problem... but if you wish to edit it out, feel free.
dmk
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