How to use the Watchdog Timer?

Ken,

I don't know anything about your system, but if the EPCS is the only configuration device you have, then you'd need to connect a PIO to the nConfig pin on your FPGA. Pulsing this low should trigger a reconfiguration.

If you're using one of Altera's boards, most of them use a Max PLD to handle the power-up configuration and reconfiguration requests. For the boards that contain EPCS devices, the PLD logic checks for the existence of a hardware image in the EPCS and steps aside if it's there. If it doesn't find one, the PLD loads the FPGA image from CFI.

Cheers,

- slacker