I am starting a project in which I will be making a new/editing the standard TI 84 Plus Calculator OS. I am planning on only changing a few things that slow it down and are not neccesarry for me. (EX: Asymptote checking while graphing, "PrettyPrint" or "MathPrint" options) I would also like to add a simple password protection screen for whenever I have turned off my Calculator to prevent data theft.

I am familiar with "Basic Programming". I am very skilled in TI Basic (Calculator Programming) and have a bit of programming experience in Java and ASM, although the only assembly code I have used is on TI 84 Plus Graphing Calculators... I am looking for some more info as well as the way I should go about making this new OS.

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Useful Links:

[TI Calc.org]"http://www.ticalc.org/"

[TI Calc OS Programs]"http://www.ticalc.org/pub/83plus/os/"

[TI Basic Dev]"http://tibasicdev.wikidot.com/"

More TI Calc stuff from another cool site:(Manual link) "http://www.teshack.com/tag/ti calculators"

[SmileyOS]"http://www.ticalc.org/pub/83plus/os/smileyos.zip" - This is one simple custom OS I have seen before, so I do know it is possible to do something similar to what I am describing.

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I am looking for someone who knows a bit more about this topic to give me some tips, and guide me in the right direction. I do want to be able to do some work on my own, so I am not asking anyone to do the work for me, simply help me out along the way giving advice.

Thanks so much to any who can help me!

-Jake