Galaga port for Tang nano 20k

Ports by Somhi adapted from DE10_lite port by Dar (https://sourceforge.net/projects/darfpga/files/Software%20VHDL/galaga/)

Read history of Galaga Arcade.

Parts and Operating Manual

Note:

This port is not stable and does weird things like not outputting video when game controls are changed, e.g. I had to disable F3/F4/F5 because of that.

Keyboard players inputs :

F3 : Add coins F4 : Start 1 player F5 : Start 2 player SPACE : Fire
RIGHT arrow : right LEFT arrow : left

F8 : toggles VGA / RGB video mode

Playstation gamepads:

START : Add coins Push mini joystick 1: Start 1 player Push mini joystick 2 : Start 2 player 2 : Fire
RIGHT : right LEFT : left

Other details : see comments on top file galaga_deca.vhd