1 Date: Mon, 16 Feb 87 15:04:41 EST
2 From: katinsky@gauss.rutgers.edu (David Katinsky)
3 To: rms@prep.ai.mit.edu
4 Subject: 3b2 procedure to raise MAXMEM
6 Below is the procedure I followed to allow enough memory for GnuEmacs to run
7 on my 3b2/400. The end result of this is that a process can snarf up to 2Mb
8 of memory. This can be a bit dangerous on a 2Mb machine, but I tried it and
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13 In the simplest case, these are the procedures to reconfigure a 3bx kernel.
19 `ls` shows the files to be:
21 README ctc* hdelog idisk ipc iuart kernel mau
22 mem msg ports* prf sem shm stubs sxt
25 2] Edit the file which contains the parameter[s] you wish to change.
26 In the following excerpt from /etc/master.d/kernel the value MAXMEM
27 was raised from 256 to 1024.
29 In V.3.0 and later releases, the parameter in question is MAXUMEM
34 * The following entries form the tunable parameter table.
42 * maxmem is number of pages (2K) was 256 --dmk
45 * hashbuf must be a power of 2
53 5] shutdown -i5 -g0 -y
55 This will take the machine down and bring it back up into firmware
56 mode. When you see that the machine has reached this state, type the
57 firmware password (default=mcp). The machine will ask for the name of
58 a program to execute. At this prompt enter /etc/system . The machine
59 should start to boot and display its configuration data.
65 [katinsky@topaz.rutgers.edu]
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70 I do not feel that having the default firmware password is a
71 problem... but if you wish to edit it out, feel free.