July/August 2005 Newsletter

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July/August 2005 Newsletter
Posted by Michael on 1 September 2005, 05:35 GMT

The July/August 2005 ticalc.org newsletter was published today, SEVERAL HOURS LATE, by our formerly-esteemed newsletter editor Jonathan. Yes, he specifically said not to razz him about his tardiness. Feel free to liberally do so.

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The comments below are written by ticalc.org visitors. Their views are not necessarily those of ticalc.org, and ticalc.org takes no responsibility for their content.

Re: July/August 2005 Newsletter
bob7
On the subject of calculator stability, how exactly COULD you crash the thing so hard that it becomes unusable?
Reply to this comment	2 September 2005, 00:06 GMT

Re: Re: July/August 2005 Newsletter
Travis Evans
Maybe by corrupting the part of Flash ROM that accepts and installs a new operating system, if that's possible. It would probably be difficult since I think I read at some point that that section of ROM is at least fairly well-protected.
Reply to this comment	2 September 2005, 00:47 GMT

Re: Re: Re: July/August 2005 Newsletter
Kevin Kofler (Web Page)
That part is indeed well-protected, but you can get it to refuse to boot your calculator by trashing the certificates. This shows TI is more worried about their own $$$ being protected (certificate validity check) than their users' (keeping the calculator working).
Reply to this comment	2 September 2005, 03:27 GMT

Re: Re: Re: Re: July/August 2005 Newsletter
slimey_limey (Web Page)
They've got all the functionality to release a for-pay OS, but haven't done it. Maybe it's an abandoned idea.
Reply to this comment	2 September 2005, 18:12 GMT

Re: Re: Re: Re: Re: July/August 2005 Newsletter
jesse frey
maybe they never had an os worth paying for
Reply to this comment	2 September 2005, 22:23 GMT

Re: Re: Re: Re: July/August 2005 Newsletter
Zarel (Web Page)
Can you at least install PedroM after the certificate's been trashed?
Reply to this comment	3 September 2005, 02:45 GMT

Re: Re: Re: Re: Re: July/August 2005 Newsletter
ExtendeD
No, the boot code won't let the OS boot.
Reply to this comment	3 September 2005, 15:26 GMT

Re: Re: Re: Re: July/August 2005 Newsletter
burntfuse (Web Page)
So is the certificate area just as hard to access as the boot code, or is it in the same section of the memory where programs are stored?
Reply to this comment	3 September 2005, 18:23 GMT

Re: Re: Re: Re: Re: July/August 2005 Newsletter
ExtendeD
<<So is the certificate area just as hard to access as the boot code>> The boot code can theoretically not be modified. The certificate memory is protected by a software-driven protection, but this protection can be bypass. <<is it in the same section of the memory where programs are stored?>> No.
Reply to this comment	3 September 2005, 19:44 GMT

Re: Re: July/August 2005 Newsletter
burntfuse (Web Page)
With a screwdriver, a hammer, and a very strong arm...
Reply to this comment	2 September 2005, 01:30 GMT

In response...The Source
coinmanz (Web Page)
Designs for a TI related "Alexandrian library" are underway. Web coding, organizing files, etc.. Anyways - it's been a plan attempted before, but never with over 1Gb to work with. Here it is - Send all tutorials for all languages involved with TI calc's, technical info, upgrades, etc to me via email (seklorean@yahoo.com). They'll appear in a section of the soon-to-be-public rbpx.org called "The Source" We will not be accepting calculator files unless they're documented or represent oncalc tutorials. Anyways, please respond. Also, submit links - i have over 1000 already organized, but don't mind more. Sweet, my tutorial for solar power upgrade is almost finished.
Reply to this comment	3 September 2005, 20:24 GMT

Re: July/August 2005 Newsletter
dMb
I loved the humor section, especially the part about getting positive results from working your abs()
Reply to this comment	24 September 2005, 00:16 GMT

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