Question about 32 bits pictures

Hello all

I'm developping a photoshop plugin, but unfortunately i don't own the latest Photoshop and i can't try the RGB 32 bits mode.

Acrually on my version there is  32 bits mode, but it changes the way colors are displayed.

I wonder if this "feature" is available on the lastest Photoshop versions? Because i need to have the precision of 32 bits but without the color changes (as it is actually in my CS2 version)

thanks

Jeff