HP 50G THERMO-PRO [help]

[DavidM]

(08-17-2022 12:07 PM)trapp Wrote:  now I have to learn to port to the hp 50g, in case anyone has an idea, I'm accepting tips

Fortunately, the code is well-commented. 14 of the 20 source files are simply tables of real numbers that would likely require very little alteration to be compiled for the 50g.

However, even if you're already familiar with System RPL and Saturn Assembly programming for the 48/49/50 systems, this would still be a significant undertaking. There's roughly 11000 lines of code (mostly Saturn) that would still need to be scanned for issues such as entry point discrepancies, unsupported firmware code that is now either nonexistent or has moved to a different location, hardware-specific code for different display sizes, etc. By most measures, that is non-trivial.

Then there's also the issue brought up by Roberto Perez-Franco indicating that there is a bug in the program's specific volume computation which sometimes causes the results to be off by as much as 5% of the actual value (see the readme.txt file in the thrmfixv code in the source zip). He provides a work-around, and you would probably want to incorporate that as well.

I'm not saying that you shouldn't pursue this. Rather, I'm trying to give you an idea of what you may be up against in porting the code to the 50g. You may find it easier to simply create an alternate version that provides the needed results, or perhaps even better just purchase a used 48GX to install the existing program(s) on.