Pico-10BASE-T

>Basically PIO smells like a wart to me. I genuinely don't know who wants it. Regular hackers aren't sophisticated enough to use it productively and the snobby nerds have better options. what are you blathering on about, sir? driving complex displays with no spu use: https://dmitry.gr/?r=06.%20Thoughts&proj=09.ComplexPioMachin... (my work) pretending to be memory stick and sd card at dozens of mhz as a slave to a sync bus (my work) ethernet: https://github.com/kingyoPiyo/Pico-10BASE-T (not my work) 68k bus slave (my work) usb host https://github.com/sekigon-gonnoc/Pico-PIO-USB (not my work) all on a $1 chip

My experience was that implementing/modifying an existing (basic) fpga ethernet stack is pretty doable, since you quickly get an indication that something works and there are very distinct layers. The colorlight 5a-75b together with Litex is a great way to get started for cheap. If you want something even more basic, https://github.com/kingyoPiyo/Pico-10BASE-T is very simple. Layout for most consumer standards is pretty lax, almost anything will probably work.