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 Check the memory card slot for any obstructions and check whether there is any dust, dirt, or grime on the memory card connector and slot If ps2 memory card slot 1 not working If I remember correctly; The Slim version supports only the PSXversion memory cards, not the PSOne version ones

ps2 memory card slot 1 not working If your memory card suddenly stops being recognized by the PS2, do not throw it away just

lobstermania slot machine This how to video explains how to repair and clean PS1PS2 memory cards that are having I usually have fmcb in memory card slot 2 If I have MX4SIO in memory card slot 1 my controller won't work, is MX4SIO taking too much power