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The latest incarnation of SimH does not appear to allow the mounting
of corrupted tpc images, or at least not the one referred to here.
I am working with RSX11M-Plus v4.6 using instructions located here:<br>
<a class="moz-txt-link-freetext" href="http://pdp2011.sytse.net/wordpress/pdp-11/sessions/rsx-11m-plus/">http://pdp2011.sytse.net/wordpress/pdp-11/sessions/rsx-11m-plus/</a><br>
<br>
The instructions for adding BP2 to RSX11M-Plus includes mounting and
using files from a known partially corrupt tpc image loacted at:<br>
<a class="moz-txt-link-freetext" href="ftp://ftp.trailing-edge.com/pub/rsxdists/basic_plus_2_rsx_v2_7.zip">ftp://ftp.trailing-edge.com/pub/rsxdists/basic_plus_2_rsx_v2_7.zip</a><br>
<br>
There are some important files on the tape. But the tape mount does
not succeed in the latest SimH:<br>
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<p><tt>sim> </tt><tt><strong>set ts ena</strong></tt><tt><br>
</tt><tt>
sim> </tt><tt><strong>att ts0 basic_plus_2_rsx_v2_7.tpc</strong></tt><tt><br>
</tt><tt>
sim> </tt><tt><strong>set ts0 format=tpc</strong></tt><tt><br>
</tt><tt>
</tt><tt><strong></strong></tt></p>
<p>In the latest SimH, when you perform these instructions, the tape
image is loaded as SimH format and the set ts0 format=tpc line
errors out with 'Unit already attached'. Reordering logically
using:<br>
</p>
<p><tt>sim> set ts ena</tt><tt><br>
</tt><tt>sim> set ts0 format=tpc</tt><tt><br>
</tt><tt>sim> att ts0 basic_plus_2_rsx_v2_7.tpc</tt><br>
</p>
<p>SimH replies with:<br>
<tt>TS: unit is read only</tt><tt><br>
</tt><tt>Format error</tt><br>
</p>
<p>However, in 3.9, the instructions work exactly as described in
the first set of instruction and the files (that are <br>
not corrupted) are then accessible in RSX11M-Plus.<br>
</p>
<p>As a workaround, I'm using SimH 3.9 to perform the sysgen, etc.
and will then use SimH latest because of its slew of improvements.<br>
</p>
<p>Does this sound like expected behavior or like an issue with the
post 3.9 SimH? If so, I'll gladly open an issue, but it's weird
enough, that I thought I would ask first.<br>
</p>
<p>Thanks,<br>
</p>
<p>Will<br>
</p>
<p><br>
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