What is the Memory Card test and the Controller Test?
The Memory Card test does test and let you format cards, delete and copy saves, and read files. One presses and holds ABCD (on first controller) when a game is inserted, then one presses reset, and it is activated. The Controller Test tests to see if you have a broken controller, and it is activated by inserting a game, turning on the power while holding ABCD on the second controller. There is either a 0 or 1 when one presses any button in the test.