I haven't tried the full-erase yet, but I just got the problem again and this time looked at it more closely.
- The problem is always the same: the OS can't seem to change the contrast
- When turning on the calc, the LCD is at minimum contrast. zStart app reports that it's set to something like 63.
- Trying to turn up contrast prints a junk token where the number normally appears (0D
) and achieves nothing.
- Trying to run the contrast down seems to cut almost all power to the LCD, maybe minimum contrast? It looks like it's printing something here as well.
- Asm programs can change the contrast successfully, such as an axe program containing
Shade() - When the contrast is turned down/off, and fixed by an asm program, the junk token changes.
- While clearing RAM, the contrast is set properly. It doesn't fix the glitch tho. However once the calc is turned off this is apparently lost, and on the next startup it's low again.
- The On+Del trick sets the contrast right, albeit clearing ram. Haven't tried OS self-test.
- At times, it seems to be fixed, when turning the calc on/off works properly. However, installing, or maybe just running, an app (maybe any app?) tends to break it again.
- I looked at calcsys for a bit, the App vat seems to have the numbers going in sequential order, starting with Axe on page 62 and ending with Calcsys on page 69.
Edit: after uninstalling zStart and clearing ram, it's back to normal. When I re-install zStart the glitch returns.
Maybe I ought to re-send that one app, see if it works?
Edit2: unchecked everything and installed, and it' working properly. Now to find the culprit setting..
Post-edit: It doesn't seem to be any setting..installing any part of it seems to cause problems. Even running the app seems to cause the err...
What's weird is that it only started doing this recently, after something, maybe or maybe not garbageCollect, messed up multiple times.
Edit3: zStart 1.3.005 btw