I don't think it's very likely that there is a PMC to PXI adapter board available. The main reason for that are the PXI specs are much stricter than the PCI specs in terms of cooling and general industrial ruggedness. I don't think, that an adapter board could meet these specs, especially as no one can tell, what type of daughter board gets piggy packed on it. So I think market chances for such a product are quite low.
Maybe I'm wrong, but these are my two cents about that topic and maybe other members of this forum have other opinions and/or information.
Just as a sidenote:
Are you aware of NI's FPGA based solutions like LabVIEW FPGA and the R-Series PXI boards? In terms of functionality this could be an alternative solution for you, especially as it's possible to integrate existing FPGA-IP cores (HDL) on these devices. Additionally these boards come with a ready-to-use I/O integration. As I don't know your application and other circumstances, I don't know, if this is a suitable suggestion for you, but maybe it's worth some considerations.
Kind regards,
Jochen Klier
National Instruments
