I remember that Applied Engineering Accelerator, Dr. Levinson  had it (along with many others), it was quite a card!

I managed to get the RocketChip Manual off archive.org. The site was totally redone, so links are screwy - many download links that are https:// does not work, but changing them to http:// will work as in this case.

The RocketChip is off according to the manual, but if I turn it on, it should reboot with the high pitched beep.