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version 1.31, 2015/07/02 05:49:04 version 1.32, 2015/11/16 23:58:23
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 It is very easy to install OpenBSD/vax on the  It is very easy to install OpenBSD/vax on the
 <a href="http://simh.trailing-edge.com">SIMH</a> VAX simulator.  All  <a href="http://simh.trailing-edge.com">SIMH</a> VAX simulator.  All
 you need is a reasonably fast machine, enough disk space for a 1.5GB  you need is a reasonably fast machine, enough disk space for a 1.5GB
 disk image and the vax <i>floppy53.fs</i> file.  disk image and a <i>floppyXX.fs</i> file from the OpenBSD/VAX distribution.
   
 Assuming you're going to run SIMH on an OpenBSD system, install the  Assuming you're going to run SIMH on an OpenBSD system, install the
 <i>emulators/simh</i> package from <a href="faq/ports/index.html">ports</a>.  <i>emulators/simh</i> package from <a href="faq/ports/index.html">ports</a>.
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 at rq1 /dev/rcd0c  at rq1 /dev/rcd0c
   
 set rq2 cdrom  set rq2 cdrom
 at rq2 floppy53.fs  at rq2 floppy58.fs
   
 at xq0 tap:tun0  at xq0 tap:tun0
   
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 </pre>  </pre>
 </blockquote>  </blockquote>
   
   For OpenBSD >5.8, replace "at xq0 tap:tun0" with "at xq0 tap:tap0".<p>
   
 This configures SIMH to simulate a VAX with a whopping 128 MB of  This configures SIMH to simulate a VAX with a whopping 128 MB of
 memory, a RA92 1.5GB disk, a CD-ROM unit to hold CD1 of your CD-ROM  memory, a RA92 1.5GB disk, a CD-ROM unit to hold CD1 of your CD-ROM
 set, another CD-ROM unit to boot from, and a DELQA Qbus Ethernet  set, another CD-ROM unit to boot from, and a DELQA Qbus Ethernet
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 <p>  <p>
   
 Create the tun0 network interface, set it into layer 2 mode and bring it up:  Create the network interface, set it into layer 2 mode if necessary,
   and bring it up:
   
 <blockquote>  <blockquote>
 <pre>  <pre>
   # OpenBSD &lt;=5.8
 # <strong>ifconfig tun0 create</strong>  # <strong>ifconfig tun0 create</strong>
 # <strong>ifconfig tun0 link0</strong>  # <strong>ifconfig tun0 link0</strong>
 # <strong>ifconfig tun0 up</strong>  # <strong>ifconfig tun0 up</strong>
   
   # OpenBSD >5.8
   # <strong>ifconfig tap0 create</strong>
   # <strong>ifconfig tap0 up</strong>
 </pre>  </pre>
 </blockquote>  </blockquote>
   
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 <blockquote>  <blockquote>
 <pre>  <pre>
   # OpenBSD &lt;=5.8
 # <strong>ifconfig bridge0 create</strong>  # <strong>ifconfig bridge0 create</strong>
 # <strong>ifconfig bridge0 fwddelay 4</strong>  # <strong>ifconfig bridge0 fwddelay 4</strong>
 # <strong>ifconfig bridge0 add em0 add tun0</strong>  # <strong>ifconfig bridge0 add em0 add tun0</strong>
 # <strong>ifconfig bridge0 up</strong>  # <strong>ifconfig bridge0 up</strong>
   
   # OpenBSD >5.8
   # <strong>ifconfig bridge0 create</strong>
   # <strong>ifconfig bridge0 fwddelay 4</strong>
   # <strong>ifconfig bridge0 add em0 add tap0</strong>
   # <strong>ifconfig bridge0 up</strong>
 </pre>  </pre>
 </blockquote>  </blockquote>
   
 By setting appropriate permissions on /dev/tun0 you can avoid running  By setting appropriate permissions on /dev/tun0 or /dev/tap0 you can
 SIMH as root.  avoid running SIMH as root.
   
 <p>  <p>
   
 Alternatively, if you cannot use bridge(4) (for example with some  802.11 wireless interfaces cannot use bridge(4) without WDS support;
 wireless drivers), you can use BPF to connect to the network.  in this case you can use BPF to connect to the network.
 In this case, you can skip the above <tt>ifconfig</tt> lines and  Skip the above <tt>ifconfig</tt> lines and replace the
 replace the "<tt>at xq0 tap:tun0</tt>" line with a line like this,  "<tt>at xq0 tap:tun0</tt>" or "<tt>at xq0 tap:tap0</tt>" line with
 replacing iwn0 with your actual network interface as necessary:  a line like this, replacing iwn0 with your actual network interface
   as necessary:
   
 <blockquote><pre>  <blockquote><pre>
 <strong>at xq0 iwn0</strong>  <strong>at xq0 iwn0</strong>
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 <p>  <p>
   
 Copy <i>vax/floppy53.fs</i> to the location of your  Copy the relevant <i>vax/floppyXX.fs</i> file to the location of your
 OpenBSD/vax SIMH environment.  OpenBSD/vax SIMH environment.
   
 Now fire up SIMH.  At the boot prompt you should type <strong>boot  Now fire up SIMH.  At the boot prompt you should type <strong>boot
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 When you are done installing any additional packages, you might want  When you are done installing any additional packages, you might want
 to remove the lines referring to your real CD-ROM unit and  to remove the lines referring to your real CD-ROM unit and
 <i>floppy53.fs</i> from your <i>openbsd.simh</i> file.  <i>floppyXX.fs</i> from your <i>openbsd.simh</i> file.
   
 <p>  <p>
   
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