Instructions
Walk through the door at the top of the castle, leading to the corridor with the never-ending stairs.
Run up the stairs for five seconds. Turn Mario around, facing down the staircase.
Perform a long-jump by pushing the joystick forward and pressing "Z" and "A" simultaneously on the Nintendo 64 game controller.
Quickly pull the joystick back all the way as soon as Mario is off the ground, and hold the joystick in that position until you reach the top of the stairs.
Hold down "Z" and tap "A" as fast as possible before Mario hits the ground after the initial long jump. Continue holding down "Z" and tapping "A" until Mario reaches the top of the stairs.