F1 Circus '91

Start the game, and input your name. Place the cursor on the End icon (running man), hold Left + II + Run and keep pressing Button 1 until you hit the End icon. If done right, you'll proceed to the Team Selection screen where the 14 teams will be available from the start.

After selecting your team, enter the "Course" option. Once inside, hold the following buttons to change the weather once you start the race:

At the title screen, hold Right + I and press Select. If done right, the Demo Course Menu will appear. While watching a race in that menu, hold I and press Down or Up to increase or decrease the speed of the car.

At the name entry screen, enter "ALAIN.P" or "AYRTON.S" to automatically play with the Ferrali Team or McRalen.

At the title screen, hold Down and press Run.