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<div class="moz-cite-prefix">On 7/12/24 08:58, Warren Toomey via
TUHS wrote:<br>
</div>
<blockquote type="cite" cite="mid:Z1OBeMAJ6CMdLPJp@minnie.tuhs.org">
<pre class="moz-quote-pre" wrap="">All, I received this detailed e-mail from Yufeng Gao who has done a great
job at analysing some of the DECtapes that Dennis made available to the
Unix Archive.P.S. I have a follow-up e-mail coming ...</pre>
</blockquote>
<p>Here is a follow-up e-mail from <span
style="white-space: pre-wrap">Yufeng, I just needed to ensure the colours got preserved :-)</span></p>
<p><span style="white-space: pre-wrap">Cheers, Warren</span></p>
<p><span style="white-space: pre-wrap">---- From </span><span
style="white-space: pre-wrap">Yufeng Gao ----</span></p>
<p class="MsoNormal">If you're going to share my email, please
consider adding the following information about the s1 and s2
files being from the same version of UNIX:</p>
<p class="MsoListParagraph">"The maki.s source and a.out executable
found in /usr/sys is the exact same maki program used to create
the INIT tape, judging by the unzeroed/leftover bytes at the end
of vcboot." <br>
</p>
<p class="MsoNormal">And the row highlighted in green from the
following table to the one from my last email:</p>
<p class="MsoNormal"> </p>
<p class="MsoListParagraph"><font face="monospace">
| UNIX V1 | s1 | UNIX V2</font></p>
<p class="MsoListParagraph"><font face="monospace">----------------------+----------+-------+---------</font></p>
<p class="MsoListParagraph"><font face="monospace">Warm boot
| [1]73700 | ??? | ???</font></p>
<p class="MsoListParagraph"><font face="monospace">Cold boot
| 1 | 1 | 1</font></p>
<p class="MsoListParagraph"><font face="monospace">Unassigned 3K
prog | 2 | 2 |</font></p>
<p class="MsoListParagraph"><font face="monospace">Dump core &
halt | 10 | 10 | 10</font></p>
<p class="MsoListParagraph"><font face="monospace">Boot from RK
| | 20 | 20</font></p>
<p class="MsoListParagraph"><font face="monospace">Dump core &
warm boot | | 40 | 40</font></p>
<p class="MsoListParagraph"><font face="monospace">Boot from paper
tape | 0 | 0 | 0</font></p>
<p class="MsoListParagraph"><font face="monospace">Load DEC
loaders | 57500 | 57500 | 77500</font></p>
<p class="MsoListParagraph"><font face="monospace">----------------------+----------+-------+---------</font></p>
<p class="MsoListParagraph"><font face="monospace"><span
style="color: rgb(43, 98, 0);"><b>BOS load address |
54000 | 54000 | 154000</b></span></font></p>
<p class="MsoListParagraph"><font face="monospace">UNIX load
address | 400 | 400 | 600</font></p>
<p class="MsoListParagraph"><font face="monospace">----------------------+----------+-------+---------</font></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Sorry if I sound like I'm asking for too much,
the history is quite important so I want everything to be in the
best possible state :).</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Sincerely,</p>
<p class="MsoNormal">Yufeng Gao</p>
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