Will the ps2 controller work on a ps1?

[cityside75]

Wireless Playstation 2 controllers don't work. I've tried my Logitech and Force 2 gamepads on my PSOne with no luck.

So if they work, it's just the wired variety.

Hmmm...my Logitech Cordless Action wireless controller works fine on my fat PS1, I use it all the time.

PS2 controllers function identically to PS1 dual shocks when used on a PS1, so games that don't support analog will not enable analog functionality on the controller and should still work fine.

Also to the original OP, technically I don't believe there's emulation involved in the PS2's ability to play PS1 games, as I believe that the major components of the PS1 are in the PS2 in hardware form.