Well, you gotta count time, blink lights and drive a motor- of course you need all that memory!
I poked at the serial port pins and they were silent. Didn't have any PIC tools handy to try reading the chip out- sorry. What I should've done, on the second thought, was to grab waveforms from charging and motor drive circuits, but I think I was more concerned with getting my toothbrush back and working.
I may have forgotten how to use the manual one