This is very interesting for me. I’ve had HP calculators for about 25 years. Currently own a 50G and before that a 48S and my father’s 41CV. I regrettably had to do my degree with a Casio because the 48S died and had to be replaced on warranty by which time I’d got used to the Casio and didn’t want to risk any problems with context switching.
I may turn up. Are there any RPL programmers around as I’ve been scratching my head on a few problems?