[50G] Question

[DavidM]

(04-21-2015 08:37 PM)Tugdual Wrote:  

(04-21-2015 08:32 PM)Voldemar Wrote:  You can erase L226, L227 and L229. In this way you will lose the equation libraries and periodic table. To restore these files, you will need to reflash the ROM.

Thanks Voldemar.
To my second question, I found the beginning of an answer. After warm reset, the 50g is evaluating 'STARTUP'. So I created a small RPL ':2:Settings' that sets defaults things such as KEYTIME. Then I created 'STARTUP' in Home that evaluates ':2:Settings'.
Works quite nicely except for the contrast that I cannot tune manually yet.

Edit:Also found trhis: http://www.hpcalc.org/details.php?id=3384 but still doesn't address contrast.

The Equation Library & Periodic Table Library are available separately in this zip file containing the 2.15 update. You don't need to reflash the ROM just for those libraries.

As you have already determined, creating a STARTUP program object allows you to run your own RPL code after a system warmstart. You're probably already aware of this, but just as a reminder you can set quite a few mode settings simultaneously by storing binary strings into the system flags (see the documentation for RCLF/STOF). While this is quick and concise, for this kind of application I still prefer to do individual changes in setup programs so that it's easier to modify them later.

Changing the contrast via a program is a more interesting topic. While this was fairly straightforward to do on the pre-ARM 48/49 systems using native Saturn code, it seems that there were some changes made to how this works on the ARM-based 49g+/50g; most (if not all) of the older apps that did this didn't work properly on the ARM systems. It seems that it should be possible, and indeed at least one older 49g program I've tested seems to adjust the contrast on my 50g. It doesn't support a non-interactive setting, however. It also wasn't designed for the larger display area of the 49g+/50g, but that's a different issue.

So it appears that it should be possible to set the contrast via Saturn code, though I'm not aware of any current apps that allow you to pass a stack-based parameter for the target. Anyone else aware of something that will do this on a 50g?