Do I need 2 memory cards to do 2 player games on PlayStation One?

Do I need 2 memory cards to do 2 player games on PlayStation One? ps2 memory card slot 1 not working In this video, I take a look at a PS2 memory card which is not detected by the PS2 console ps2 slot If you get an error message saying Unable to use Memory card Slot 1, when inserting one of the following memory cards in the ILCE-7SM3: SF-M

ps2 slot I have a Genuine PS1 Memory Card that detects on my PS2 but does not format In the Playstation 1 Console, this card can not even detect

gas 123 slot Yes PS1 memory cards work in PS2 systems BUT and this is a big but only for PS1 games not for PS2 games Because the file systems are different You might already have a slot you can just put that into and view those pictures right away If not, you'll need a memory card reader These