DB48X: HP48-like RPL implementation for DM42

[c3d]

(12-04-2023 12:59 PM)n3mmr Wrote:  Is it at all possible for DB48x ( or DB50X ) to support a CAS system and or an equation writer of the types seen in the HP48 to HP50 calculators?

It is possible and planned for this to happen.

At the moment, what works is algebraic expressions, a basic numerical solver, and a 'Rewrite' command that roughly mimics the functionality in `↑MATCH` but differs in the details.

These particular deviations are not intentional, and this is one case where I will change the current implementation to match what the HP48 does. For some reason, I had not found that general expressions rewrite feature when I searched for it, and assumed incorrectly it was not exposed as a user command.

As for equation rendering in graphic form, there are also some foundations for it (there is a graphical rendering mode for the stack) but it does not work for most objects yet. It shows graphics objects in graphic form, that's about it ;-)