Going ahead and connecting the 12V to the 4DSP board from an external PS wont cut it. FrontPanel wont recognize the XEM7350. I suspect that the FMC150 might be loading the 3.3V rail too much?
We also tried this with a FMC176. We placed a jumper at R48 (giving FMC176 U7 5V) and this seemed to do the trick but after approximately 4 seconds, it failed. We traced it back to the PG_C2M signal going low after the mentioned time.
We have successfully used these cards on the KC705 platform where Xilinx ties the PG_C2M signal high, how could we replicate such behavior on the XEM7350?