> Maybe it's overheating? Do you have a little fan right on the FPGA? > We've found that is necessary, even in a "proper" case. We cut a hole in > the lid and add a fan right over the chip.
Interesting idea. I do have a small fan attached to the iBOB heat sink. It was running at the time. The iBOB is mounted in a rack with plenty of ventilation. One other point that just occurred to me... the 8 small LEDs accessible from the fabric were off, but the larger LED that indicates that the fabric is programmed was ON. Not sure if that helps support a diagnosis of the FPGA overheating. > That, or a power supply regulator is overheating and shutting down. > might be able to diagnose that with your finger. (carefully, as they run > somewhat hot anyway!) Hmm... Would a power supply regulator overheating cause the FPGA to lose it's programming? When it comes back to life it returns to normal with its software registers set correctly and everything. Laura > > John > >> Thanks, >> Laura >> > > >
