RPN83P: RPN calculator for TI-83+ TI-84+ inspired by HP-42S

[ebs]

(11-29-2023 10:00 PM)bxparks Wrote:  Good news. I made my app 2.5X faster on the 83+SE, 84+, and 84+SE models with almost no effort. So PRIM finishes the factorization of 65521*65521 in about 13 seconds instead of 33 seconds on these machines. It turns out these 3 later models use Z80 processors which can run at 2 speeds: 6 MHz or 15 MHz. But I didn't know that flash apps are configured to run at 6 MHz by default, for backwards compatibility with the original 83+ which can only run at 6 MHz. So I added a few lines of code to configure my app to run at 15 MHz, and bam, everything runs faster.

I don't own TI calculators but I find very interesting this project anyway.

Have you checked the battery consumption at 15 Mhz? If it's going to draw it quickly maybe you can do the frequency user selectable?