Thankfully the STM32’s inputs are 5V tolerant, so things worked just fine. Simple Game Boy cartridges like Tetris were able to directly map a ROM device into the Game Boys memory space.

A few years ago, [Frans-Willem] bought a few RGB LED panels. Ten 32×16 panels is ... but that didn’t have enough memory for 24-bit color. The microcontroller du jour – a TI Stellaris ...