following buttons:
X, Square, Triangle, L1+Triangle, L1+Square, X, Square, Triangle, L1+X, O, X, Square, and X. The earliest time you can possibly do this and have it work is at the start of Disc 2, and you can always come back at any time after that if you missed it.
As from PSX to PC:
Square = ./Del, "Switch" -- used for misc. commands
Circle= Enter, "OK" -- confirm menu selections, talk to/examine people or objects
Triangle= Plus (+), "Menu" -- open the game menu
X= 0/Insert, "Cancel" -- close menu, cancel selection, run
L1= 9/Page Up, scroll (menu); turn (world); held with R1/Page Dn to run (battle)
R1= 3/Page Dn, croll (menu); turn (world); held with L1/Page Up to run (battle)
L2= 7/Home, hange world map POV
R2= 1/End, hange world map POV
Start= 5, ause game (battle); switch map (world)
Select= Minus (-), isplay position pointer and exit marks