Firewire between eMac and iBook G3 cause G3 to shut down

[geekindisguise]

I did this before, but it broke my eMac, and not my iBook.
Well, today I wanted to see how fast of a connection for Shared Internet I would get if I used Firewire instead of the Network cable. So I turned on the sharing on my eMac, and I got out the Firewire cord. I plugged it into the eMac, then into the iBook. The iBook immediately turns off after I plugged in the cable.
And now it won't turn back on. What do I do?
It shows no signs of life when I press the button...

Please help.
Its the 1.42Ghz G4 eMac
and the
700Mhz 14" G3 iBook