Very nice! Works great!

Maybe a next challlenge for you could be to conect the PowerBook to the Internet by LocalTalk. I did this with a Plus. Must be possible with a Powerbook 100 as well. See my posting about it:

http://68kmla.org/forums/viewtopic.php?f=7&t=11601&p=140915#p140915

This article gibves also the information about the LocalTalk bridge:

http://macintosh.vanegten.com/?p=185