Wow, very interesting. Thanks for the info! > Hmm...I had info in my TCPA directory, but that's currently password > protected. Anyhow, yes the SE has a "real" crystal, the same sort used in > the HW2 TI-89 and TI-92 Plus (32.768 khz). The xtal is used to drive some > programmable timers. I'll paste the information I've found out about it > below: