My work is pretty bad.<p>We have a box running windows 3.1 hooked up to an instrument on our plant. The answer I got when I asked about it was it has a proprietary ISA DAQ card in it with &#x27;flaky&#x27; drivers&#x27; that prevents us upgrading it.<p>It&#x27;s a non critical instrument but is providing &#x27;useful&#x27; data I think its some type of microwave radar measurement instrument - very specialised hardware. It&#x27;s been working well since the 90&#x27;s so not worth spending money until it fails.<p>&quot;Proprietary hardware cards&quot; are notorious in industrial control system world they inevitably lock you into some ancient infrastruture when modern hardware and O&#x2F;S&#x27;s stop supporting ISA slots and things like that.