DB48X: HP48-like RPL implementation for DM42

[rprosperi]

I agree with Tom, I would never, ever expect the [EEX] key to do anything besides be used to enter exponents of 10, and default to 1 x if used as the initial numeric entry. The conversions you mention will be useful and appreciated but I cannot imagine you would use these more often than entering exponentiation. But, it's your design and as long as it's configurable, and there is an atomic command equivalent of normal [EEX] behavior, then it doesn't matter.

BTW, coming along nicely....