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Author Topic: [Urgent Request] Modifying OS 2.53MP  (Read 27000 times)

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Offline critor

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #15 on: January 27, 2011, 06:39:30 pm »
Quote from: Qwerty.55 on January 27, 2011, 06:10:09 pm
It should be, if you write it into the boot code with TI's utility.

I's possible to write in a TI-73/83+/84+ boot code using only softwares?
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Offline Darl181

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #16 on: January 27, 2011, 06:40:05 pm »
there's calcsys, but idk its limits
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Offline AngelFish

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #17 on: January 27, 2011, 06:40:17 pm »
If I recall correctly, TI released a utility that allowed you to run programs on boot. I can't remember the specifics though.
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Offline squidgetx

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #18 on: January 27, 2011, 06:41:05 pm »
Quote from: Xeda112358 on January 27, 2011, 05:50:01 pm
Oh, no I mean removing the memory menu completely from the OS and then making a separate app that handles the same stuff as the memory menu (obviously with an updated/upgraded look and ability). Then they couldn't even access the memory menu to begin with. You could even protect your app with a password...

Actually this wouldn't even be that hard in Axe. Archive, UnArchive, Delvar, all you need is a menu interface and knowledge of how to sort the VAT and you're good :)

Now I want to make that...lol
« Last Edit: January 27, 2011, 06:41:27 pm by squidgetx »
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Offline Darl181

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #19 on: January 27, 2011, 06:43:46 pm »
ti's utility to run stuff on startup is called, aptly, StartUp (iirc) and it's not exactly fool proof.
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Offline jnesselr

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #20 on: January 27, 2011, 06:55:48 pm »
You can't write into the page 7F boot code with software.  Let's see, the best I can figure for this is the menu hook:
http://wikiti.brandonw.net/index.php?title=83Plus:Hooks:9BC0
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Offline calcdude84se

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #21 on: January 27, 2011, 07:39:14 pm »
zStart has a mechanism to modify the OS to run itself even after a battery pull, so you can look at its source for ideas :)
Alternatively, if you want to just remove that reset menu entirely, one could look through an OS disassembly, patch the OS accordingly, and release a patch. (Just the patch, not the modified OS, for legal reasons.)
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Offline thepenguin77

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #22 on: January 27, 2011, 11:20:48 pm »
zStart would help if combined with Omnicalc's memory block function. Of course they could always disable Omnicalc and kill it, but a simple ram clear wouldn't fix their problems.

I'll look into this and probably fix it tomorrow. I'm thinking of changing the menu data so that the Reset menu only has 1 option, which is RAM clear. I could also completely wipe out the Mem > 2 menu. Do you want that too?

Edit:
    I can just change the Mem > 2 to like sin( or something. That would kill it.
« Last Edit: January 27, 2011, 11:21:47 pm by thepenguin77 »
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Offline thepenguin77

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #23 on: January 27, 2011, 11:52:37 pm »
Sorry for the double post but the topic says [Urgent Request]. This took me about 20 minutes, so enjoy.
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Offline Xeda112358

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #24 on: January 27, 2011, 11:55:02 pm »
Oh, that's just awesome :D... Maybe you can make the pi into a phi :P (just kidding)
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Offline calcdude84se

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #25 on: January 28, 2011, 12:23:17 am »
Nice, penguin! :D
Hopefully yunhua will make good use of it :)
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Offline yunhua98

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #26 on: January 28, 2011, 02:11:27 pm »
thanks man!  but how would I delete programs if I needed to?
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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #27 on: January 28, 2011, 02:13:58 pm »
* Ashbad guesses Yunhua would have to change the OS to do that O.o

EDIT: and very nice, the penguin!  That is pretty awesome right there :)
« Last Edit: January 28, 2011, 02:14:31 pm by Ashbad »
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Offline Darl181

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #28 on: January 28, 2011, 02:14:49 pm »
There's DelVar, but I haven't been able to get it to work with progs ???
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Offline critor

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Re: [Urgent Request] Modifying OS 2.53MP
« Reply #29 on: January 28, 2011, 02:17:43 pm »
You cannot delete applications/appvars with the patched OS.

But there is a way to delete programs.
Just unarchive the programs you want to remove,  and make a RAM reset.
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