Comment by lioeters

Closest thing I found was:

Single Bit Neural Nets Did Not Work - https://fpga.mit.edu/videos/2023/team04/report.pdf

> We originally planned to make and train a neural network with single bit activations, weights, and gradients, but unfortunately the neural network did not train very well. We were left with a peculiar looking CPU that we tried adapting to mine bitcoin and run Brainfuck.