<!DOCTYPE html><html><head><title></title></head><body><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">Don't want to stray too off-topic but ...</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"><br></div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">DPS8M development is quite active, see <a href="https://dps8m.gitlab.io/">https://dps8m.gitlab.io/</a> - a new point</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">release is coming soon, and other projects are in active development, like</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">an FPGA implementation of the DN6678 (and eventually the DPS8/M CPU). A lot</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">of the work is going into developer tooling for those projects, which isn't</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">that interesting to the "general public", but the community is very busy.</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"><br></div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">The guys working on it just spend more time hacking that posting updates</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">about the work! (but we do have a blog at <a href="https://dps8m.gitlab.io/blog/">https://dps8m.gitlab.io/blog/</a>).</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"><br></div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">Since you mentioned GCOS, you should know that a lot of effort was recently</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"> spent to get the GCOS environment up and working. Note this is GCOS being</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"> emulated in Multics, not GCOS on the metal (yet - we need tapes). A better</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"> write-up is actually in progress, but for now you can check the Wiki page:</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"><br></div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">https://multics-wiki.swenson.org/index.php/GCOS</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"><br></div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">(And yes, the simulator was originally a fork of SIMH to start, but at</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">this point it's barely related and future versions will have even less</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">SIMH code. This isn't to knock that project at all, just that DPS8M</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">simulator development has moved in a different direction.)</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"><br></div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">As the Flag Day, the only reference that I know to it is the one on the</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">multicians.org website. I could ask on the multicians list, or send an</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;">inquiry to Tom Van Vleck.</div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"><br></div><div id="sig44647154"><div class="signature">--</div><div class="signature">Jeffrey H. Johnson</div><div class="signature"><a href="mailto:trnsz@pobox.com">trnsz@pobox.com</a></div></div><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"><br></div><div>On Fri, Jul 18, 2025, at 10:44 PM, Tom Perrine wrote:</div><blockquote type="cite" id="qt" style=""><div dir="ltr"><div>There are still a few Multics sites running - and semi-active community development.</div><div><br></div><div>Courtesy of an old fork of SIMH that became a very full fledged DPS8/6800 simulator. I was running MR11 something on a Pi for a while, and then in GCP.</div><div><br></div><div>Brought back old times - my second computer - after GCOS.</div><div><br></div><div>*sigh*</div><div><br></div><div>I think there may also be a reference to Flag Day in the original printed Hacker's Dictionary, and I think in the Jargon file from which it was derived? I don't have any old copies of either around to check</div><div><br></div><div>--tep<br></div></div></blockquote><div style="font-family:menlo, consolas, monospace;font-size:88.89%;"><br></div></body></html>