HP15CLE old can of worms

[Nick_S]

This would be a nice project -- to complete a final firmware for posterity. Could it be done by patching the current firmware? There are a large number of HP-15C Limited Edition calculators out there and they offer speed improvements over the original as well as being very robust. I am still on my first sample which has accidentally done the floor drop test a number of times, with other samples bought as back-ups remaining in their boxes in storage. It is the right-level of size, functionality and clear design such that I never need to use the manual to check how to do something I have in mind.

Nick