Playstation card can we use playstation2 memmory card to play station1

Also, you cannot save PS1 game information to a PS2 memory card, even if you play the PS1 game on your PS2.

Your question is somewhat confusing, using a playstation 2 memory card, will have PS2 game saves on it, how would you play PS2 games on a PS1 from the save, you can't. If you just mean you are using a PS2 card for a PS1, the way a PS2 card saves data is different to a PS1 card, so it probably won't work You can use your PS1 memory cards in the PS2. You can only use the PS1 memory cards to save PS1 games that you are playing in your PS2. You can't save any PS2 game data to a PS1 memory card