That ends up not actually being that fast. The real goal was to be able to wake the Pocket/Tamagotchi core and have it automatically fast forward time as if the device was running that whole time. But when the FPGA fabric (and my design) limits us to 1800x, that means we get a whopping 30 minutes of sim time per every 1 second of real time. So even if you slept the device for a day, it's unreasonable to wait for it to fast forward.

Nothing special happens when fast forwarding, other than you can kill your Tamagotchi very quickly :P