TODO
output bool OUT_13; // D1
output bool OUT_12; // D2
output bool OUT_11; // D3
output bool OUT_10; // D4
output high/low OUT_03;
emit OUT_03(high);
code/await MFS_Buttons (none) -> (event (int,high/low) e) -> NEVER;
output high/low OUT_04;
output high/low OUT_07;
output high/low OUT_08;
code/await MFS_Display (none) -> NEVER;
code/call Num (var int num) -> none;