All I know is that Vortex cards are highly recommended by Theo (the creator of OpenBSD) so I would assume they have fairly good support, although INSTALL.i386 only mentions this as being supported
Intel (and formerly ICP-Vortex) GDT series [A] [C]
There's no other reference to either "ICP" or "Vortex".
You might try asking email@example.com
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