[PORT] Space Invaders Dreamcast. 1.2

MODIF
Menu a l'ecran titre,
Petite music,
Gestion 1 ou 2 Player sur la meme manette, vu que c'est a tour de role,
Quit relance la console,
A+B+X+Y+START en pleine partie revient a l'ecran titre, et a l'ecran titre reboot , permet de revenir ainsi sur le GDEMU


MODIFICATIONS

• Title screen menu
• Add background music
• Support 1 or 2 players using the same controller, since the game is turn-based
• "Quit" restarts the console
• Pressing A + B + X + Y + START during gameplay returns to the title screen
• Pressing A + B + X + Y + START on the title screen reboots the system, allowing the user to return to the GDEMU menu

1.1 With clock ajust