[plug] UPS's with Linux support

[Paul Wilson]

>Paul Wilson wrote:
>> (while we're on the subject, why do the suppliers claim that Linux/UNIX
>> needs a different serial cable from Win9x/NT ?)
>
>The Unix one isn't wide enough to fit the bugs down? (-:
>
>I suspect that many unices _require_ various forms of hardware
>handshaking (like the DOS COM#: drivers). Linux, and many other modern
>unices, can do a setserial /dev/cua# -drtscts command (or near
>equivalent) and rely on the buffers being big enough...


With modems I can understand that. However, all a dumb UPS does is
raise/lower one or more lines in the port itself.  The software sits quietly
looking at the port intently, and does something if the state of the chosen
line(s) changes.

I'm not even seeing a status change on the port itself.

Paul