bonzobanana on 29 December 2017
Using the 68000 is overkill, 6502A is where its at but no more than 1mhz. Should help keep manufacturing costs reasonable. Still a huge number of Tamagotchi's still sold using the chip so should be widely available.
Keep the joysticks super simple too no need to over-complicate the design. Making use of nearby flat surfaces will reduce the use of plastic.
