But not for the trapdoor (can't be done).
however, superior communist technology designed by russian comrade NedoPC allows you to add a whopping 8MB of fastram (or 5.5MB keeping PCMCIA)!
I think you can actually use both boards at once and have both 2MB of chip ram and 5.5MB fast ram, with the equally useful feature of being able to add an internal flicker fixer and scan doubler to your A600 so don't right this board off as being of little use just yet :-)