What is the cheat code for getting all chaos emeralds in sonic heroes?

To get all the Chaos Emeralds in Sonic Heroes, you need to:

1. Press UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, B, A during the title screen.

2. Confirm the action by pressing START in the controller port to which you want the cheat code applied.

Each time you enter this cheat code, you will unlock a new Chaos Emerald:

- At first, you will unlock the yellow emerald.

- On the second time, you will unlock the light blue and orange emerald.

- On the third time, you will unlock the navy blue emerald and red emerald.

- On the fourth time, you will unlock the green emerald and violet emerald.