Would the HP-15C Limited Edition Firmware Age Away?

[rprosperi]

(03-18-2018 04:53 AM)Greg Wrote:  One of the more interesting errors I saw come out of the HP firmware was for a HP-29C. It wasn't a real calculator, just an emulator...

Where did you see an HP-29C Emulator? That would be of interest to a lot of folks here.

On the 15C, such a condition at power-on produces a display of "PR ERROR" which is exactly what the OP reported was seen, so yes, simply dead batteries seems to be the case here as well.