I recently downloaded final fantasy 8 for pc, i can't save game bec. the emulator can't detect the memry card.?

i downloaded this ff8 rom and when i'm about to save game the emulator cannot display the memory card slot1 and 2. .it keeps on saying that there is no memory card.. but how come when i played the ff7 with the same pcsx emulator i actually saved my game.. is it a problem in the emulator??