Does anyone know what parameters are actually stored in the PRAM in the Powerbook 500 Series?

Since my PRAM battery is dead (actually, missing, I just took it out once I knew it was dead) I figure I might run into trouble with it remembering where the boot drive is located in the PCMCIA slot if that parameter is stored in the PRAM area and the system isn't left plugged in.

Edit: Looks like I answered my own question, without PRAM it can't boot off of PCMCIA, it just stares at me asking for an operating system... This is an annoying situation I didn't foresee...