<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-GB" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">I managed to get the KLH10 emulator compiled and running the Panda distribution of TOPS-20 under Raspbian on a Pi 4 without too much trouble. Its ‘dpni20’ process has no trouble talking
to a TAP device which is bridged with eth0 and thence onto the mixed in-memory/real-ethernet DECnet connection to the HECnet. Admittedly, I’m not that familiar with TOPS-20 or the ‘hardware’ on which it runs. My main interest was MDL at the time. It’s still
running as WALACH on the HECnet. My main ‘take-away’ from the experience was: “HOW many questions do I have to answer in order to create a directory on this thing??”<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">On the SIMH side of things, I’m a bit stuck getting TOPS-10 running from the DO scripts from the URL…. [I appear to have misplaced this bit of information]<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">Keith<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> owner-hecnet@Update.UU.SE [mailto:owner-hecnet@Update.UU.SE]
<b>On Behalf Of </b>Rob Jarratt<br>
<b>Sent:</b> 26 February 2020 11:51<br>
<b>To:</b> hecnet@Update.UU.SE<br>
<b>Subject:</b> RE: [HECnet] Multinet alternatives ...<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I can’t remember now what the problems were, but I think I had problems getting Phase III running on SIMH with the KMC or KDP (or whatever it was).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt">
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> <a href="mailto:owner-hecnet@Update.UU.SE">
owner-hecnet@Update.UU.SE</a> <<a href="mailto:owner-hecnet@Update.UU.SE">owner-hecnet@Update.UU.SE</a>>
<b>On Behalf Of </b>Thomas DeBellis<br>
<b>Sent:</b> 25 February 2020 20:14<br>
<b>To:</b> <a href="mailto:hecnet@Update.UU.SE">hecnet@Update.UU.SE</a><br>
<b>Subject:</b> Re: [HECnet] Multinet alternatives ...<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p>What issues had you encountered talking to Tops-20??<o:p></o:p></p>
<p>If you are using the SIMH emulator for a KS processor, then the latest version of Tops-20 you can run is 4.2, which I believe will do Phase III. Since there was never any Ethernet adapter for the KS (it was a massbus device), I believe you must speak DDCMP,
which we used with KMC's, which would do 56Kbs. There was a slower adaptor for 9.6Kbs, but the name escapes me at the moment.<o:p></o:p></p>
<p>I've had little trouble with Tops-20 V7 DECnet; that is, once I got it to working. When I was modifying FAL/DAP to accept anonymous transfers, I and and others beat on it quite a lot to wring the bugs out. These regression tests were against another 20,
RSX 11M+ (or whatever MIM:: is running) and a couple of Vaxen. The operating system level code was robust; no crashes.<o:p></o:p></p>
<p>We found some interesting bugs; I think my favorite was RSX wanting all capital letters for months and Tops-20 sending capitalized months, so file dates got messed up. There were others, but they took some effort to remediate; so, not so favorite...<o:p></o:p></p>
<div>
<p class="MsoNormal">On 2/25/20 1:38 PM, Rob Jarratt wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Mine has been built to be portable (it is in C). I have it running on Windows, Debian and FreeBSD. I have not tried on VMS, but I did do a partial port to VAXELN. I don’t foresee great difficulties
getting it to run on VMS. It looks like I may have done some partial VMS work, but it has been a while since I looked. I could look into reviving/continuing that if there is interest.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Mine won’t talk to TOPS10/20, yet. I started something on that too if I remember correctly, I did build a DDCMP implementation which I think partially worked. I think I foundered on just getting
DECnet running on TOPS20 on SIMH, I did some work with Mark Pizzolato and Timothe Litt to build a KDP emulation, but I struggled to keep up with them and gave up in the end. I am not sure where that went.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I need a bit of time to work out what my status is I think as it has been a while.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Regards</span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Rob</span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt">
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> <a href="mailto:owner-hecnet@Update.UU.SE">
owner-hecnet@Update.UU.SE</a> <a href="mailto:owner-hecnet@Update.UU.SE"><owner-hecnet@Update.UU.SE></a>
<b>On Behalf Of </b>Robert Armstrong<br>
<b>Sent:</b> 25 February 2020 14:42<br>
<b>To:</b> <a href="mailto:hecnet@Update.UU.SE">hecnet@Update.UU.SE</a><br>
<b>Subject:</b> [HECnet] Multinet alternatives ...</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> What are the alternatives for bridging DECnet systems across the Internet that don’t require any special hardware and can be self hosted on OpenVMS/VAX?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> I’m aware of Paul’s Python router, but I didn’t think it ran on a VAX. Am I wrong about that? Is there a Python for OpenVMS/VAX? I believe there’s a port for AXP but I didn’t know about one for VAX.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> And I saw Rob mentioned his user mode DECnet router. Same questions – what environment does that require? And I saw mention it being both Multinet and simh DDCMp compatible – will it talk to a simh KS10/TOPS10/DMR
?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Bob</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
</div>
</blockquote>
</div>
</div>
</body>
</html>