Annotation of www/vax-simh.html, Revision 1.34
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1.34 ! tb 16: <h2>
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! 18: <font color="#0000ff"><i>Open</i></font><font color="#000084">BSD</font></a>
! 19: <font color="#e00000">vax on SIMH</font>
! 20: </h2>
1.1 kettenis 21: <hr>
1.34 ! tb 22: <p>
1.1 kettenis 23:
24: It is very easy to install OpenBSD/vax on the
1.2 henning 25: <a href="http://simh.trailing-edge.com">SIMH</a> VAX simulator. All
1.1 kettenis 26: you need is a reasonably fast machine, enough disk space for a 1.5GB
1.32 sthen 27: disk image and a <i>floppyXX.fs</i> file from the OpenBSD/VAX distribution.
1.1 kettenis 28:
29: Assuming you're going to run SIMH on an OpenBSD system, install the
1.18 steven 30: <i>emulators/simh</i> package from <a href="faq/ports/index.html">ports</a>.
1.1 kettenis 31: Decide on an appropriate location for your OpenBSD/vax SIMH
32: environment and at that location, create a file <i>openbsd.simh</i>
33: with the following contents:
34:
1.3 saad 35: <blockquote>
36: <pre>
1.1 kettenis 37: <strong>
1.24 okan 38: set cpu 128m
1.1 kettenis 39: at nvr openbsd.nvram
40:
1.8 kettenis 41: deposit rq qtime 1000000
1.1 kettenis 42:
43: set rq0 ra92
44: at rq0 openbsd.ra0.disk
45:
46: set rq1 cdrom
47: at rq1 /dev/rcd0c
48:
49: set rq2 cdrom
1.32 sthen 50: at rq2 floppy58.fs
1.1 kettenis 51:
1.26 sthen 52: at xq0 tap:tun0
1.1 kettenis 53:
54: boot cpu
55: exit
56: </strong>
1.3 saad 57: </pre>
58: </blockquote>
1.1 kettenis 59:
1.32 sthen 60: For OpenBSD >5.8, replace "at xq0 tap:tun0" with "at xq0 tap:tap0".<p>
61:
1.24 okan 62: This configures SIMH to simulate a VAX with a whopping 128 MB of
1.1 kettenis 63: memory, a RA92 1.5GB disk, a CD-ROM unit to hold CD1 of your CD-ROM
64: set, another CD-ROM unit to boot from, and a DELQA Qbus Ethernet
1.26 sthen 65: controller attached to the tun0 interface.
66: You might need to replace <strong>/dev/rcd0c</strong> with the
67: name of the raw device corresponding to your real CD-ROM unit.
1.21 sthen 68:
69: <p>
70:
71: By default pressing ^E will interrupt the emulation; if you're
72: accustomed to the emacs editing keys, you might like to remap this
73: (e.g. adding <strong>set console wru=1e</strong> sets it to ^6,
74: ascii code 0x1e).
75: If you prefer a larger disk, replace <strong>set rq0 ra92</strong>
76: with e.g. <strong>set rq0 rauser=15000</strong> (where 15000 is the
1.22 sthen 77: size in MB).
1.21 sthen 78: See the SIMH documentation for more details.
1.1 kettenis 79:
80: <p>
81:
1.26 sthen 82: Before starting SIMH, you will need to configure the network.
1.27 sthen 83: In most cases, the following bridge-based configuration will give
84: best results:
85:
86: <p>
87:
1.32 sthen 88: Create the network interface, set it into layer 2 mode if necessary,
89: and bring it up:
1.26 sthen 90:
91: <blockquote>
92: <pre>
1.32 sthen 93: # OpenBSD <=5.8
1.26 sthen 94: # <strong>ifconfig tun0 create</strong>
95: # <strong>ifconfig tun0 link0</strong>
1.29 sthen 96: # <strong>ifconfig tun0 up</strong>
1.32 sthen 97:
98: # OpenBSD >5.8
99: # <strong>ifconfig tap0 create</strong>
100: # <strong>ifconfig tap0 up</strong>
1.26 sthen 101: </pre>
102: </blockquote>
103:
104: Bridge it to your ethernet interface and enable the bridge:
105:
106: <blockquote>
107: <pre>
1.32 sthen 108: # OpenBSD <=5.8
1.26 sthen 109: # <strong>ifconfig bridge0 create</strong>
110: # <strong>ifconfig bridge0 fwddelay 4</strong>
111: # <strong>ifconfig bridge0 add em0 add tun0</strong>
112: # <strong>ifconfig bridge0 up</strong>
1.32 sthen 113:
114: # OpenBSD >5.8
115: # <strong>ifconfig bridge0 create</strong>
116: # <strong>ifconfig bridge0 fwddelay 4</strong>
117: # <strong>ifconfig bridge0 add em0 add tap0</strong>
118: # <strong>ifconfig bridge0 up</strong>
1.26 sthen 119: </pre>
120: </blockquote>
121:
1.32 sthen 122: By setting appropriate permissions on /dev/tun0 or /dev/tap0 you can
123: avoid running SIMH as root.
1.27 sthen 124:
125: <p>
126:
1.32 sthen 127: 802.11 wireless interfaces cannot use bridge(4) without WDS support;
128: in this case you can use BPF to connect to the network.
129: Skip the above <tt>ifconfig</tt> lines and replace the
130: "<tt>at xq0 tap:tun0</tt>" or "<tt>at xq0 tap:tap0</tt>" line with
131: a line like this, replacing iwn0 with your actual network interface
132: as necessary:
1.27 sthen 133:
134: <blockquote><pre>
135: <strong>at xq0 iwn0</strong>
136: </pre></blockquote>
137:
1.26 sthen 138: <p>
139:
1.32 sthen 140: Copy the relevant <i>vax/floppyXX.fs</i> file to the location of your
1.12 miod 141: OpenBSD/vax SIMH environment.
1.1 kettenis 142:
143: Now fire up SIMH. At the boot prompt you should type <strong>boot
144: dua2:</strong>, after which SIMH should boot into the normal OpenBSD
145: installation program:
146:
1.3 saad 147: <blockquote>
148: <pre>
1.1 kettenis 149: # <strong>simh-vax openbsd.simh</strong>
150:
1.25 sthen 151: VAX simulator V3.9-0
1.1 kettenis 152: NVR: buffering file in memory
1.26 sthen 153: Eth: opened OS device tun0
1.13 sthen 154: Loading boot code from /usr/local/lib/simh/vax/ka655x.bin
1.1 kettenis 155:
156:
157: KA655-B V5.3, VMB 2.7
158: Performing normal system tests.
159: 40..39..38..37..36..35..34..33..32..31..30..29..28..27..26..25..
160: 24..23..22..21..20..19..18..17..16..15..14..13..12..11..10..09..
161: 08..07..06..05..04..03..
162: Tests completed.
163: >>><strong>boot dua2:</strong>
164: (BOOT/R5:0 DUA2
165:
166:
167:
168: 2..
169: -DUA2
170: 1..0..
171:
172:
1.25 sthen 173: >> OpenBSD/vax boot [1.16] <<
1.1 kettenis 174: >> Press enter to autoboot now, or any other key to abort: 0
175: > boot bsd
1.3 saad 176: </pre>
177: </blockquote>
1.1 kettenis 178:
179: After you've finished the installation, restart SIMH, but now type:
180:
1.3 saad 181: <blockquote>
182: <pre>
1.1 kettenis 183: >>><strong>boot dua0:</strong>
1.3 saad 184: </pre>
185: </blockquote>
1.1 kettenis 186:
187: to boot from your newly installed disk image. You'll need a little
188: patience upon your first boot, since generating the SSH host keys can
189: take quite a bit of time. But it will eventually boot through and
190: present you with a friendly login prompt:
191:
1.3 saad 192: <blockquote>
193: <pre>
1.1 kettenis 194: OpenBSD/vax (noname.my.domain) (console)
195:
196: login:
1.3 saad 197: </pre>
198: </blockquote>
1.1 kettenis 199:
200: When you are done installing any additional packages, you might want
201: to remove the lines referring to your real CD-ROM unit and
1.32 sthen 202: <i>floppyXX.fs</i> from your <i>openbsd.simh</i> file.
1.1 kettenis 203:
204: <p>
205:
206: Enjoy!
207:
208: </body>
209: </html>
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