A controller test can be accessed by turning the power on either with no controller plugged in, or having an unsupported controller (e.g. a mouse or a light gun) plugged in.
After connecting a proper controller (or two), you can press the buttons to light up their respective inputs on the screen. The music track "Deposit Coins" plays during this mode.
Further information displayed:
MODE — The region setting of the console. Displays either "JAPAN" or "ABROAD".
VMOD — The television mode. Displays either "NTSC" or "PAL".
VER.NO. — The model of Mega Drive being used.
Users on Sega-16 have confirmed that the game is region-free, which is not uncommon for Mega Drive titles from 1993 and obviously true for nearly all titles released before that year.
RBelmont wrote:A little math shows that if you overclock a Pi3 to about 3.4 GHz you'll start to be competitive with PCs from 2002. And you'll also set your house on fire