As others have said, PIO has your back. https://hackaday.com/2022/12/03/bit-banging-bidirectional-ethernet-on-a-pi-pico/ https://hackaday.com/2022/12/03/bit-ban

As others have said, PIO has your back. https://hackaday.com/2022/12/03/bit-banging-bidirectional-ethernet-on-a-pi-pico/ https://hackaday.com/2022/12/03/bit-banging-bidirectional-et...