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Author Topic: Calc System Restore- Is it Possible?  (Read 13341 times)

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Offline Deep Toaster

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Re: Calc System Restore- Is it Possible?
« Reply #15 on: July 01, 2010, 10:43:45 pm »
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« Last Edit: July 01, 2010, 10:52:52 pm by Deep Thought »
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Offline mapar007

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Re: Calc System Restore- Is it Possible?
« Reply #16 on: July 02, 2010, 06:50:19 am »
... and then Mapar busted the bubble.

Sadly, the boot code (as the name says, this piece of code is responsible for booting up the machine) will never let you boot over USB. You can't modify the boot code, it's written on normal ROM, not EEPROM.

The reverse is possible: you can make a PC boot off a calculator, in theory :D
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Offline Deep Toaster

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Re: Calc System Restore- Is it Possible?
« Reply #17 on: July 02, 2010, 07:43:08 am »
Aww, why'd you do that? :(

Okay, fine. Another idea:

I've heard that BrandonW's OS2 supports dual-booting. Maybe try making the restore point part of the TI-OS, then use OS2 as the main OS?

Once again, I have no idea what I'm talking about :)
« Last Edit: July 02, 2010, 07:43:32 am by Deep Thought »
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Offline TC01

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Re: Calc System Restore- Is it Possible?
« Reply #18 on: July 02, 2010, 11:20:44 am »
Could you write an OS for the calculator that would do nothing other than call other programs (programs that would "act" as the OS) on the flash drive?

Or is that impossible?
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Offline mapar007

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Re: Calc System Restore- Is it Possible?
« Reply #19 on: July 02, 2010, 11:26:35 am »
Yes. It is possible, at least in theory. It would be hard to code, and it is certainly beyond me at this point. Also, I think multiple practical issues will show up over time.
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Offline DJ Omnimaga

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Re: Calc System Restore- Is it Possible?
« Reply #20 on: July 02, 2010, 05:07:34 pm »
The issue is that such OS would have limited audience. Not everyone is allowed by his parents to buy online and not everyone lives near a Radio Shack store to buy adapters. Such OS would require to support both non-USB and USB mode for people who don't want to use a jumpdrive.
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Offline ztrumpet

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Re: Calc System Restore- Is it Possible?
« Reply #21 on: July 02, 2010, 05:20:51 pm »
Quote from: DJ Omnimaga on July 02, 2010, 05:07:34 pm
not everyone lives near a Radio Shack store to buy adapters.
Actually I went to my local Radio Shack and they didn't even have the adapter. :P

Thanks for clarifying Mapar! ;D
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Offline DJ Omnimaga

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Re: Calc System Restore- Is it Possible?
« Reply #22 on: July 02, 2010, 05:34:00 pm »
That sucks x.x

Where I live, there are no longer any Radio Shack stores. They were all bought by Circuit City in 2005 and renamed to The Source by Circuit City and then became independent from the American branch. It's pretty much the same, but some adapters are ridiculously expensive x.x
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Offline Deep Toaster

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Re: Calc System Restore- Is it Possible?
« Reply #23 on: July 03, 2010, 09:34:38 am »
Circuit City's still around over there? o.O I thought it went out of business.
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Offline mapar007

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Re: Calc System Restore- Is it Possible?
« Reply #24 on: July 03, 2010, 10:23:44 am »
I bought one of those USB adapters online via Het Computerwinkeltje. Belgium rules :P
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Offline ztrumpet

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Re: Calc System Restore- Is it Possible?
« Reply #25 on: July 03, 2010, 10:25:55 am »
I bought this ( https://serialio.com//store/product_info.php?products_id=456&osCsid=7386c8b72d3d3738d41885be5c210cd5 ) one.  It just arrived and seems to fit both my calc and my flash drive. :D
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Offline mapar007

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Re: Calc System Restore- Is it Possible?
« Reply #26 on: July 03, 2010, 10:26:27 am »
Identical to what I got.
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Offline matthias1992

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Re: Calc System Restore- Is it Possible?
« Reply #27 on: July 03, 2010, 10:50:40 am »
I don't think backing up the OS is NOT

a) useful
b) possible

You could backup all the system flags and entry points and you could possibly make a "snapshot" of the machine's state (as the restore point). Compression techniques will be have to put to their limits to get all the information sqeeuzed in and then yet there is the question hw useful it is. Saving the current state of the machine as I mentioned earlier seems more useful.
 
You would store all the current programs, apps, appvars, user vars, system flags etc. And you'd backup all the registers. That should/might fit into Flash and it would be enough to recover from a RAM clearance (but then again groups will do that as well).
« Last Edit: July 03, 2010, 10:51:00 am by matthias1992 »
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Offline DJ Omnimaga

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Re: Calc System Restore- Is it Possible?
« Reply #28 on: July 03, 2010, 03:21:53 pm »
Quote from: Deep Thought on July 03, 2010, 09:34:38 am
Circuit City's still around over there? o.O I thought it went out of business.
Well, not Circuit City stores by themselves. There were never any in Canada I think. The Source By Circuit City stores were owned by them, though, and when Circuit City went under, this Canadian branch stayed alive (altough they had lots of 80% sales for a while). Now some stores were just renamed to "The Source", while some still has "The Source By Circuit City" banner

http://www.google.com/images?client=opera&rls=en&q=the%20source%20by%20circuit%20city&oe=utf-8&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi
« Last Edit: July 03, 2010, 03:22:58 pm by DJ Omnimaga »
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Offline Deep Toaster

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Re: Calc System Restore- Is it Possible?
« Reply #29 on: July 04, 2010, 05:10:23 am »
Quote from: matthias1992 on July 03, 2010, 10:50:40 am
I don't think backing up the OS is NOT

a) useful
b) possible

Yeah, good point. Instead of creating some sort of "restore point" that would be pretty easy to corrupt anyway, it'd be a lot easier just to transfer backups to/from computers/other calculators.
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