[Andy] didn’t want to use up 24 pins on his Arduino, so he used a latch to multiplex the lowest 8 address lines and the data lines together. With the 512KB RAM expansion installed, the Mega is ...

We originally featured [Rodot’s] Arduino based gaming console over ... a micro SD card, and I2C expansion connectors. This is one project to keep an eye (and two hands) on, especially since ...