can the ps2 slim play ps1 games?

Ever since i bought the ps2 slim, ive always boughtt ps2 games. Yesterday i was passing by a store, and they had Final fantasy IX in display, so i decided to buy it, having great memories of it. So i got home and when i put in the first disce, it takes me to the browser option, where i can choose to check my memory card, or play the game. Whats weird is that it recognizes it as a ps1 disc, and it appears black.

Anyways, when i finaly choose the option to play the game, the screen goes black and it stays like that.....

Do i need to configure something, or is it that the ps2 slim isnt backwards compatible... plz i need an answer urgently!

Ever since i bought the ps2 slim, ive always boughtt ps2 games. Yesterday i was passing by a store, and they had Final fantasy IX in display, so i decided to buy it, having great memories of it. So i got home and when i put in the first disce, it takes me to the browser option, where i can choose to check my memory card, or play the game. Whats weird is that it recognizes it as a ps1 disc, and it appears black.

Anyways, when i finaly choose the option to play the game, the screen goes black and it stays like that.....

Do i need to configure something, or is it that the ps2 slim isnt backwards compatible... plz i need an answer urgently!

Maziso

There is an setting in the browser menu where you can turn on the smooth and the speed setting(turn them on) for when you're playing PS1 games on the PS2.

Adjusting those two setting should/might help.