Not to mention if they were really afraid that people may brick their calcs, then why did they wait 16 years to protect their calc from 3rd party dev? 13 years ago, they even added the Asm( command on the TI-86.

So why don't they release an OS to lock up the Z80 calcs?  not to give any ideas.

And on a side note, What's UniversalOS?  btw, they put DoorsOS  is that referring to the 68k one, or a fail spelling DoorsCS?

We have keys for 68k as well?
I doubt anyone's going to fall for one on 68k though, since they haven't updated in so long, they already give the impression they don't care about 68k anymore.
But then again, everyone may download since they're so eager after so long.

<offtopic>I just loaded OS 0.46 on WabbitEmu.  </offtopic>

Well, to answer that question:

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I understand you would like to know why we do not provide support for a wider array of development for the TI-Nspire. The TI-Nspire handheld has built in the ability to implement programs via TI-Basic. I can understand that this may be viewed as a limited program editor; it is limited to ensure the proper operation of the calculator.

On earlier Texas Instruments graphing calculators which you could compile and develop assembly programs there were third-party shell programs and third-party operating systems which have been known to cause the calculators to lock up or malfunction. Third-party shell programs include, but are not limited to: MirageOS, DoorsOS, UniversalOS, Ion, and have been known to cause issues with the operation and implementation of the calculator.


I have never had these shells affect the functioning of my calc. True, there's that program BrandonW made to destroy certificates, but there was a clear warning with that.

Those shells can lock up the calc, but most contains or are around documentation to help you unlock your calc if a crash occurs. There's no way those shells can permanently damage the calc unless you run a program that writes to the wrong section of flash and deletes the certificate and OS. Such program, however, is hard to find in the TI community and they're hidden well for obvious reasons.

Maybe TI should just go the same way they did with 3rd party 83 OSes: installing 3rd party ASM/C software voids the warranty. Use at your own risk. This would warn people who are less experienced with calc stuff while still giving freedom for developers and those who want to use the calc for games.

I kinda have doubts this company will release the source code of stuff they sell, though. I hope they eventually get open-minded again toward 3rd-party development, though.