Omnimaga
Calculator Community => TI Calculators => Axe => Topic started by: jimbo1qaz on December 19, 2014, 08:47:01 pm
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I have an Axe password protector I programmed with a special feature involving a BCALL.
Any suggestions on how to turn it off in a way that ZStart will still run when the calculator turns on?
That means no "make the calculator think it's low on battery". That results in an APD, and the next time the thief turns my calculator on, it will no longer be locked.
Alternatively, is it possible to suspend my program until the ON button is pressed, to save power without having to deal with ZStart not running or RAM leaks?
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The on-button triggers an interrupt, so you could shut down peripherals and then halt the cpu. Make sure that the on- button interrupt is the only one that is enabled. After the halt instruction you have to restore the peripherals to their previous state.
You need to use some asm for this.
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The first part of your post is easy. Add in your program a key (or several keys) that makes it quit immediately when pressed. Like
If getKey(54)
Return
End
<follows the code you already have for your password thing>
Then, when you turn your calc on, press this key (or those keys) while pressing on and it will skip the password.
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NO. I wanted to turn the calculator off such that ZStart will relaunch the program when it turns back on. Not to skip the password prompt. That's trivial.
Anyway, how do I disable peripherals and halt?
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thats the b_call(_poweroff
in axe it is:
asm(EF0850)
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Tried your turnOff BCALL.
As soon as it turns off, the calculator becomes extremely unstable. I tried rerunning password: 1 time it hung, one time it did nothing. After it did nothing, I tried opening editor with Axe hooks enabled, it crashed.
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If you enable the on-interrupt and low-power mode in port 03 (http://wikiti.brandonw.net/index.php?title=83Plus:Ports:03 (http://wikiti.brandonw.net/index.php?title=83Plus:Ports:03)), if you execute a halt instruction and set up an interrupt (in IM 2), you can set the interrupt to do whatever you need to do. This is probably easier in assembly and there might be a better way to do it in axe.
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NO. I wanted to turn the calculator off such that ZStart will relaunch the program when it turns back on. Not to skip the password prompt. That's trivial.
Oh, I misunderstood because in your first post, you say "turn it off" without mentionning your calc (except in the title) so I thought "it" referred to the program -.-
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There's an opcode floating around somewhere. You need to output a value to some port and halt the cpu, this turns the whole calc off but it will resume your program if you turn it on.
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I made a password app (http://www.cemetech.net/programs/index.php?mode=file&id=1231) with axe and zstart before. Just do:
Asm(3E01D303FB76FDCB09A6C9)This powers the calc off and as soon as the on key is pressed the program will resume directly after this line.
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Ime personaly not an Axe pro, but cant you just use
shade()->s
shade(0)
Repeat IsLocked
end
shade(s)
My calculator protector system i wrote just uses shade() to turn the screen "off". But, once again ime no pro in Axe or Ti-8x, so dont be mad if ime missing an important point.
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The issue is that you'd still be able to exit that program by simply pulling a battery
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The issue is that you'd still be able to exit that program by simply pulling a battery
Yea...
But you can also bypass the MirageOS protectin by pulling the battery ::) ...
And like every security system ive tried.
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But isn't that MirageOS thingy then gone once you clear the ram? Wouldn't it be thus more secure to have a program hooked on turning on with zstart?
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I made a password app (http://www.cemetech.net/programs/index.php?mode=file&id=1231) with axe and zstart before. Just do: Asm(3E01D303FB76FDCB09A6C9)This powers the calc off and as soon as the on key is pressed the program will resume directly after this line.
I tied out your opcode, it does not really work. It does turn the calculator of, but the it just goes back to the OS, not to the next line of code. For example:
Clrhome
Disp("hello")
Asm(your opcode)
Disp("world")
Reapeat getkey
End
This will display "hello" but not "world". Mabey I have to enable some zstart settings.