Gate Array Learn

	apt install yosys fpga-icestorm nextpnr-ice40 verilator flashrom
	make
	doas make load

Raspberry Pi UART
	Enable serial communication in raspi-config.

UART
	stty -F /dev/ttyUSB1 1000000 raw cs8
	hexdump -ve '1/1 "%u\n"' /dev/ttyUSB1 | pv > pcm.txt