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<div class="moz-cite-prefix">On 26-Jun-15 13:43, Hittner, David T
(IS) wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">What
PDP-11 used TU58’s, and what controller did the drive
connect to?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Dave</span></p>
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11/23, 11/44, VT103, HSC50 -- among others.<br>
<br>
Host: Any RS232/423 (dumb) interface, e.g. DL(V)11, MXV11. 9600 -
38400 BPS using a packet protocol (RSP, IIRC) with XON/XOFF flow
control<br>
<br>
The drive itself has an embedded 8085 CPU that is the real
controller. It's not terribly smart. <br>
<br>
The protocol is roughly similar to MSCP (lighter-weight); the tape
is block-addressable, normally the 512 byte DEC standard block,
although there's a 128 byte record mode for dealing with
buffering/comm issues. Normally the controller assembles 4 records
to make a block. Cartridge is formatted with 512 blocks of 512
bytes each (0.25 MB).<br>
<br>
<a class="moz-txt-link-freetext" href="http://bitsavers.trailing-edge.com/pdf/dec/dectape/tu58/">http://bitsavers.trailing-edge.com/pdf/dec/dectape/tu58/</a> has the
docs.<br>
<br>
<br>
<pre class="moz-signature" cols="72">This communication may not represent my employer's views,
if any, on the matters discussed.
</pre>
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<blockquote
cite="mid:33855172c0d048a0a6df770cd593ca2f@XCGVAG24.northgrum.com"
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<p class="MsoNormal"><span
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<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
Simh [<a class="moz-txt-link-freetext" href="mailto:simh-bounces@trailing-edge.com">mailto:simh-bounces@trailing-edge.com</a>]
<b>On Behalf Of </b>Bill Cunningham<br>
<b>Sent:</b> Friday, June 26, 2015 1:14 PM<br>
<b>To:</b> Hans-Ulrich Hölscher; <a class="moz-txt-link-abbreviated" href="mailto:simh@trailing-edge.com">simh@trailing-edge.com</a><br>
<b>Subject:</b> EXT :Re: [Simh] TU58 device for PDP-11s<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">-----
Original Message -----
<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:#E4E4E4"><b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">From:</span></b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<a moz-do-not-send="true"
href="mailto:hoelscher-kirchbrak@freenet.de"
title="hoelscher-kirchbrak@freenet.de">
Hans-Ulrich Hölscher</a> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">To:</span></b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<a moz-do-not-send="true"
href="mailto:simh@trailing-edge.com"
title="simh@trailing-edge.com">simh@trailing-edge.com</a>
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Sent:</span></b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">
Friday, June 26, 2015 12:56 PM<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Subject:</span></b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">
[Simh] TU58 device for PDP-11s<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Am
I right that there is currently no TU58 device available
for the PDP-11 series of computers?<o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""> <o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">If
so, would someone be so kind as to implement it?<o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""> <o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Thanks
in advance to all programmers who ponder on evetually
doing it!<o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""> <o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Regards,<o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""> <o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Ulli<o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><br>
<span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">I
don't know about simh, but there are several simulators
out there. There is something for linux too. But it
sounds like a worthy cause.</span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Bill</span><o:p></o:p></p>
</div>
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<p class="MsoNormal"> <o:p></o:p></p>
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