Annotation of www/vax-simh.html, Revision 1.26
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18:
19: <h2><font color="#e00000">OpenBSD/vax on SIMH</font></h2>
20:
21: <hr>
22:
23: It is very easy to install OpenBSD/vax on the
1.2 henning 24: <a href="http://simh.trailing-edge.com">SIMH</a> VAX simulator. All
1.1 kettenis 25: you need is a reasonably fast machine, enough disk space for a 1.5GB
1.25 sthen 26: disk image and the vax <i>floppy52.fs</i> file.
1.1 kettenis 27:
28: Assuming you're going to run SIMH on an OpenBSD system, install the
1.18 steven 29: <i>emulators/simh</i> package from <a href="faq/ports/index.html">ports</a>.
1.1 kettenis 30: Decide on an appropriate location for your OpenBSD/vax SIMH
31: environment and at that location, create a file <i>openbsd.simh</i>
32: with the following contents:
33:
1.3 saad 34: <blockquote>
35: <pre>
1.1 kettenis 36: <strong>
1.24 okan 37: set cpu 128m
1.1 kettenis 38: at nvr openbsd.nvram
39:
1.8 kettenis 40: deposit rq qtime 1000000
1.1 kettenis 41:
42: set rq0 ra92
43: at rq0 openbsd.ra0.disk
44:
45: set rq1 cdrom
46: at rq1 /dev/rcd0c
47:
48: set rq2 cdrom
1.25 sthen 49: at rq2 floppy52.fs
1.1 kettenis 50:
1.26 ! sthen 51: at xq0 tap:tun0
1.1 kettenis 52:
53: boot cpu
54: exit
55: </strong>
1.3 saad 56: </pre>
57: </blockquote>
1.1 kettenis 58:
1.24 okan 59: This configures SIMH to simulate a VAX with a whopping 128 MB of
1.1 kettenis 60: memory, a RA92 1.5GB disk, a CD-ROM unit to hold CD1 of your CD-ROM
61: set, another CD-ROM unit to boot from, and a DELQA Qbus Ethernet
1.26 ! sthen 62: controller attached to the tun0 interface.
! 63: You might need to replace <strong>/dev/rcd0c</strong> with the
! 64: name of the raw device corresponding to your real CD-ROM unit.
1.21 sthen 65:
66: <p>
67:
68: By default pressing ^E will interrupt the emulation; if you're
69: accustomed to the emacs editing keys, you might like to remap this
70: (e.g. adding <strong>set console wru=1e</strong> sets it to ^6,
71: ascii code 0x1e).
72: If you prefer a larger disk, replace <strong>set rq0 ra92</strong>
73: with e.g. <strong>set rq0 rauser=15000</strong> (where 15000 is the
1.22 sthen 74: size in MB).
1.21 sthen 75: See the SIMH documentation for more details.
1.1 kettenis 76:
77: <p>
78:
1.26 ! sthen 79: Before starting SIMH, you will need to configure the network.
! 80: Create the tun0 network interface and set it into layer 2 mode:
! 81:
! 82: <blockquote>
! 83: <pre>
! 84: # <strong>ifconfig tun0 create</strong>
! 85: # <strong>ifconfig tun0 link0</strong>
! 86: </pre>
! 87: </blockquote>
! 88:
! 89: Bridge it to your ethernet interface and enable the bridge:
! 90:
! 91: <blockquote>
! 92: <pre>
! 93: # <strong>ifconfig bridge0 create</strong>
! 94: # <strong>ifconfig bridge0 fwddelay 4</strong>
! 95: # <strong>ifconfig bridge0 add em0 add tun0</strong>
! 96: # <strong>ifconfig bridge0 up</strong>
! 97: </pre>
! 98: </blockquote>
! 99:
! 100: <p>
! 101:
1.25 sthen 102: Copy <i>5.2/vax/floppy52.fs</i> to the location of your
1.12 miod 103: OpenBSD/vax SIMH environment.
1.1 kettenis 104:
105: Now fire up SIMH. At the boot prompt you should type <strong>boot
106: dua2:</strong>, after which SIMH should boot into the normal OpenBSD
107: installation program:
108:
1.3 saad 109: <blockquote>
110: <pre>
1.1 kettenis 111: # <strong>simh-vax openbsd.simh</strong>
112:
1.25 sthen 113: VAX simulator V3.9-0
1.1 kettenis 114: NVR: buffering file in memory
1.26 ! sthen 115: Eth: opened OS device tun0
1.13 sthen 116: Loading boot code from /usr/local/lib/simh/vax/ka655x.bin
1.1 kettenis 117:
118:
119: KA655-B V5.3, VMB 2.7
120: Performing normal system tests.
121: 40..39..38..37..36..35..34..33..32..31..30..29..28..27..26..25..
122: 24..23..22..21..20..19..18..17..16..15..14..13..12..11..10..09..
123: 08..07..06..05..04..03..
124: Tests completed.
125: >>><strong>boot dua2:</strong>
126: (BOOT/R5:0 DUA2
127:
128:
129:
130: 2..
131: -DUA2
132: 1..0..
133:
134:
1.25 sthen 135: >> OpenBSD/vax boot [1.16] <<
1.1 kettenis 136: >> Press enter to autoboot now, or any other key to abort: 0
137: > boot bsd
1.3 saad 138: </pre>
139: </blockquote>
1.1 kettenis 140:
141: After you've finished the installation, restart SIMH, but now type:
142:
1.3 saad 143: <blockquote>
144: <pre>
1.1 kettenis 145: >>><strong>boot dua0:</strong>
1.3 saad 146: </pre>
147: </blockquote>
1.1 kettenis 148:
149: to boot from your newly installed disk image. You'll need a little
150: patience upon your first boot, since generating the SSH host keys can
151: take quite a bit of time. But it will eventually boot through and
152: present you with a friendly login prompt:
153:
1.3 saad 154: <blockquote>
155: <pre>
1.1 kettenis 156: OpenBSD/vax (noname.my.domain) (console)
157:
158: login:
1.3 saad 159: </pre>
160: </blockquote>
1.1 kettenis 161:
162: When you are done installing any additional packages, you might want
163: to remove the lines referring to your real CD-ROM unit and
1.25 sthen 164: <i>floppy52.fs</i> from your <i>openbsd.simh</i> file.
1.1 kettenis 165:
166: <p>
167:
168: Enjoy!
169:
170: <hr>
171: <a href="vax.html">
172: <img height="24" width="24" src="back.gif" border="0" alt="OpenBSD/vax">
173: </a>
174: <br>
175: <small><a href="mailto:www@openbsd.org">www@openbsd.org</a></small>
176: <br>
177:
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