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<h2>OpenBSD/vax</h2>

<hr>
<h3><strong>History and Status:</strong></h3>

<a href="images/vax.jpg"><img src="images/vax.jpg" ALIGN=right alt="[nothing sucks like a vax]"></a>

<p>
OpenBSD/vax began in early 2000 when architecture specific code was adapted
from NetBSD's very mature port to these systems. Smaller imports still
occur as useful changes happen in that OS, but not wholly derivative, changes
in our port are often incorporated into NetBSD. The result of all this work is
an Operating System that is stable and familiar to any OpenBSD user.
</p>

<p>
<b>Significant changes post 3.0:</b>
</p>

<ul>
<li>Binary logical page size changed to 4096 bytes
</ul>

<p>
<b>Significant changes between 2.9 and 3.0:</b>
</p>

<ul>
<li>Support for "Omega" machines added
<li>Event counters attached to most devices
<li>More addressing modes added to the emulation system
</ul>

<p>
<b>Significant changes between 2.8 and 2.9:</b>
</p>

<ul>
<li>Support for 16 filesystems per drive
<li>Emulation of the EMODD instruction
<li>Support for "Cheetah" machines added
<li>Interrupt signals no longer cause ksh subshells to core
</ul>

<p>
OpenBSD runs on a wide variety of VAX hardware, but our
<a href="want.html#vax">inventory of systems</a>
is limited. OpenBSD/vax may actually run on your hardware even if it's not
listed here, so we rely on your testing and feedback to keep this list up to
date.  After you finish installing and road testing your new system, consider
running "dmesg |mail dmesg@openbsd.org" to help us determine what types of
hardware people are using.
</p>

<table WIDTH="100%">
<tr VALIGN=top>
    <td WIDTH="40%">
	<p>
	<b>Tested systems:</b>
	</p>

	<ul>
	<li>VAXstation/MicroVAX 2000
	<li>VAXstation 3100/{30,40} (<font color="#009900">SCSI</font>)
	<li>VAXstation 3100/{38,48} (<font color="#009900">SCSI</font>)
	<li>VAXstation 3100/76 (<font color="#009900">SCSI</font>)
	<li>VAXstation 4000/60 (<font color="#009900">SCSI</font>)
	<li>VAXstation 4000/VLC (<font color="#009900">SCSI</font>)
	<li>MicroVAX 3100/{10,20}{,e} (<font color="#009900">SCSI</font>)
	<li>MicroVAX 3100/80 (<font color="#009900">SCSI</font>)
	<li>MicroVAX 3100/90 (<font color="#009900">SCSI</font>)
	<li>MicroVAX 3300
	<li>VAX 4000/100 (<font color="#009900">SCSI</font>)
	<li>VAX 4000/105 (<font color="#009900">SCSI</font>)
	<li>VAX 4000/300 
	<li>VAX 4000/{4,5,6}00
	</ul>
    </td>

    <td WIDTH="60%">
	<p>
	<b>Projects being worked on:</b>
	</p>

	<ul>
	<li>VAXstation 2000's HDC9224 (floppy/mfm hard disk controller)
	<li>MSCP support for tapes and drives on QBUS/UQSSP machines
	<li>Shared libraries? eventually...
        <li>Support for any new systems we encounter
	</ul>

	<p>
	<b>Documentation we're looking for:</b>
	</p>

	<ul>
	<li>Programming info for LCG or SPGFX framebuffers
	<li>Software references for SHAC DSSI
	<li>Any edition VARM
	</ul>

 	<p>
	<b>Known problems:</b>
	</p>

	<ul>
	<li>toolchain issues - overzealous gcc optimizer
	<li>pmap - addressing limits
	</ul>
    </td>
</tr>
</table>

<p>
In addition to formal releases, snapshots that reflect our current work
are available for download from the <a href=ftp.html>ftp mirrors</a>,
and a mailing has been set up at
<a href="mailto:vax@openbsd.org"> vax@openbsd.org</a>.
To join the OpenBSD/vax mailing list, send a message body of <b>"subscribe
vax"</b> to <a href="mailto:majordomo@OpenBSD.org">majordomo@OpenBSD.org</a>.
Please be sure to check our <a href="mail.html">mailing list policy</a> before
subscribing.
</p>

<p>
The OpenBSD/vax port maintainers are
<a href="mailto:bjc@cvs.openbsd.org">Brandon Creighton</a>
and <a href="mailto:hugh@cvs.openbsd.org">Hugh Graham</a>.
</p>

<br><br>
<hr>
<a href=plat.html><img height=24 width=24 src=back.gif border=0 alt=OpenBSD></a> 
<a href="mailto:www@openbsd.org">www@openbsd.org</a>
<br>
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