MXI-2 / MXI-4 question

[LV4Me]

I'm going to need to develop a test program on a VXI test system that is controlled by an external PC running LabView 8.2 and linked with a MXI-2 interface.  For my needs, I'll need to add a PXI chassis for some additional capabilities.  My question is if it is possible to purchase a PXI - MXI-4 interface (or something else) and daisy chain it along the existing PCI - MXI-2 chain or would I need a second MXI interface in the PC?  If it is possible, are there any requirements on where the PXI chassis is in the chain?

TIA,

George

[LV4Me]

A little clarification of my confusion 😉

I guess what I am unsure of is whether or not there is a "MXI bus" since I see MXI-2 and MXI-4 cards, or if they merely extend VXI and PXI buses with bus-specific adaptation to the PCI bus.  Seems to me that if there is a MXI bus, it shouldn't care what devices/backplanes are daisy-chained onto it.

The motivation for the question, is the external PC in question is PCI-slot challenged (i.e., I have no available PCI slots, but need to add a PXI chassis).

[LV4Me · Accepted solution]

Found my own answers (Google site seaches help when you cannot otherwise find info).  I guess most people here don't deal with VXI/PXI with an external, slot-limited computer...at least, not any more.