https://gunkies.org/index.php?action=history&feed=atom&title=MLSI-BA11-200 2026-05-15T23:40:28Z Revision history for this page on the wiki MediaWiki 1.30.1 https://gunkies.org/w/index.php?title=MLSI-BA11-200&diff=34880&oldid=prev 2024-07-26T15:18:16Z

<p>Adopt CHWiki article format+category, add a bunch more links</p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr style="vertical-align: top;" lang="en"> <td colspan="2" style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 15:18, 26 July 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The [[MDB Systems]] <del class="diffchange diffchange-inline">MLSI-BA11-200 </del>is a third party [[<del class="diffchange diffchange-inline">QBus</del>]] chassis<del class="diffchange diffchange-inline">, </del>backplane<del class="diffchange diffchange-inline">, </del>and power supply offering that is fully compatible with [[DEC]] [[<del class="diffchange diffchange-inline">QBus</del>]] <del class="diffchange diffchange-inline">dual</del>-height cards, and some quad-height cards. It includes an eight-slot quad height Q/Q backplane. Original backplanes appear to be Q18 only, but can be wire <del class="diffchange diffchange-inline">wrapped </del>to Q22.</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The <ins class="diffchange diffchange-inline">'''MLSI-BA11-200''' from </ins>[[MDB Systems]] is a third<ins class="diffchange diffchange-inline">-</ins>party [[<ins class="diffchange diffchange-inline">QBUS</ins>]] <ins class="diffchange diffchange-inline">[[mounting box|</ins>chassis<ins class="diffchange diffchange-inline">]] (including [[</ins>backplane<ins class="diffchange diffchange-inline">]] </ins>and <ins class="diffchange diffchange-inline">[[</ins>power supply<ins class="diffchange diffchange-inline">]]) </ins>offering that is fully compatible with [[<ins class="diffchange diffchange-inline">Digital Equipment Corporation|</ins>DEC]] <ins class="diffchange diffchange-inline">QBUS </ins>[[<ins class="diffchange diffchange-inline">DEC card form factor|dual</ins>]]-height cards, and some quad-height cards. It includes an eight-slot quad height <ins class="diffchange diffchange-inline">[[QBUS#Backplanes|</ins>Q/Q<ins class="diffchange diffchange-inline">]] </ins>backplane. Original backplanes appear to be <ins class="diffchange diffchange-inline">[[QBUS#Variable address size|</ins>Q18<ins class="diffchange diffchange-inline">]] </ins>only, but can be <ins class="diffchange diffchange-inline">[[</ins>wire<ins class="diffchange diffchange-inline">-wrap]]ped </ins>to Q22.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>A small [[PDP-11/03]] style front panel is provided, with typical RUN/HALT, RESET, and LTC switches. There are indicators for DC OK and RUN. The RUN lamp is actually an illuminated <del class="diffchange diffchange-inline">pushbutton </del>switch, and doubles as the RESET switch.</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>A small [[PDP-11/03]] style <ins class="diffchange diffchange-inline">[[</ins>front panel<ins class="diffchange diffchange-inline">]] </ins>is provided, with typical RUN/HALT, RESET, and <ins class="diffchange diffchange-inline">[[Line time clock‎|</ins>LTC<ins class="diffchange diffchange-inline">]] </ins>switches. There are indicators for <ins class="diffchange diffchange-inline">[[direct current|</ins>DC<ins class="diffchange diffchange-inline">]] </ins>OK and RUN. The RUN lamp is actually an illuminated <ins class="diffchange diffchange-inline">push-button </ins>switch, and doubles as the RESET switch.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The bare MLSI-BA11-200 configuration does not contain a LTC, bus termination, <del class="diffchange diffchange-inline">powerfail </del>detect/sequencing, or even an interface to the front panel lamps and switches. These functions are provided by the [[MLSI-SMU]], which is a dual-height <del class="diffchange diffchange-inline">QBus </del>card. The <del class="diffchange diffchange-inline">[[</del>MLSI-SMU<del class="diffchange diffchange-inline">]] </del>also provides a pseudo switch register.</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The bare MLSI-BA11-200 configuration does not contain a LTC, <ins class="diffchange diffchange-inline">[[</ins>bus<ins class="diffchange diffchange-inline">]] [[terminator|</ins>termination<ins class="diffchange diffchange-inline">]]</ins>, <ins class="diffchange diffchange-inline">power-fail </ins>detect/sequencing, or even an interface to the front panel lamps and switches. These functions are provided by the [[MLSI-SMU]], which is a dual-height <ins class="diffchange diffchange-inline">QBUS </ins>card. The MLSI-SMU also provides a pseudo<ins class="diffchange diffchange-inline">-[[</ins>switch register<ins class="diffchange diffchange-inline">]]</ins>.</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">==See also==</ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">* [[Upgrading QBUS backplanes]]</ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>&#160;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">[[Category: QBUS Hardware]]</ins></div></td></tr> <!-- diff cache key mediawiki-wiki_:diff:version:1.11a:oldid:34838:newid:34880 --> </table>

Jnc https://gunkies.org/w/index.php?title=MLSI-BA11-200&diff=34838&oldid=prev 2024-07-24T18:46:09Z

<p>Adding initial article on MDB MLSI-BA11-200 chassis</p> <p><b>New page</b></p><div>The [[MDB Systems]] MLSI-BA11-200 is a third party [[QBus]] chassis, backplane, and power supply offering that is fully compatible with [[DEC]] [[QBus]] dual-height cards, and some quad-height cards. It includes an eight-slot quad height Q/Q backplane. Original backplanes appear to be Q18 only, but can be wire wrapped to Q22.<br /> <br /> A small [[PDP-11/03]] style front panel is provided, with typical RUN/HALT, RESET, and LTC switches. There are indicators for DC OK and RUN. The RUN lamp is actually an illuminated pushbutton switch, and doubles as the RESET switch.<br /> <br /> The bare MLSI-BA11-200 configuration does not contain a LTC, bus termination, powerfail detect/sequencing, or even an interface to the front panel lamps and switches. These functions are provided by the [[MLSI-SMU]], which is a dual-height QBus card. The [[MLSI-SMU]] also provides a pseudo switch register.</div>

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