Well they did that for desktop keyboards, and same thing with Logitech for trackballs…Hah! I love that the PCB was designed by Alps. I was expecting a © from Apple. Did Apple just throw the PowerBook keyboard at Alps and tell them to make it work?
Probably a one-off chip. It has a Motorola logo so it's not the Mitsubishi keyboard microcontroller from the 1xx PowerBooks (or the Intel part used in detached ADB keyboards) and it's not PG&E (which is what reads the rows/columns in post-1xx PowerBooks) because that has 160 pins. There appears to be a 34x-xxxx Apple part number on it but the picture's not hi-res enough to read it.
Oh, right. And the trackpad was Alps Glidepoint, wasn't it?
Hey! I have the same desk mat!
