Strange Ti83 Crash
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Strange Ti83 Crash
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Jutt


Advanced Newbie


Joined: 27 Jun 2004
Posts: 94
Posted: 20 Jul 2004 11:22:15 am    Post subject:
Yesterday I was just playing with my TI83 when something very strange happened. I went to [MEM] > [Check RAM] and this is what it showed for Y-vars and Prgm:

Code:
Y-vars    12817
Prgm      35850

All my Y-vars were empty so they should have been less than 300 bytes. And for Prgm it showed a lager number of bytes than available on the 83 (27000). Then I found out one program took up about 12000 bytes. I runned it and nothing happened, but when I tried to edit it my Calc crashed. I don't think this is due to any ASM program, since I hade almost none on my calc.
Does anyone have an idea what could have happened?
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leofox
INF student


Super Elite (Last Title)


Joined: 11 Apr 2004
Posts: 3562
Posted: 20 Jul 2004 11:31:04 am    Post subject:
MirageOs always did things like that, but that's only on plus, right? I think it can only be done because of an ASM program, since they only can do those weird things (one completely filled my RAM with nothingness, another messed up rand).

But because you don't had any on your calc, i think it's an OS bug.

But i'm not exactly an expert on these things, this is just what i think of it.
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Arcane Wizard
`semi-hippie`


Super Elite (Last Title)


Joined: 02 Jun 2003
Posts: 8993
Posted: 20 Jul 2004 11:45:57 am    Post subject:
Jutt wrote:
I don't think this is due to any ASM program, since I hade almost none on my calc.

1 program will be plenty to mess things up.
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agility
Calc Spammer


Calc Guru


Joined: 16 May 2004
Posts: 1266
Posted: 20 Jul 2004 12:01:52 pm    Post subject:
What program were you running?
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DigiTan
Unregistered HyperCam 2


Super Elite (Last Title)


Joined: 10 Nov 2003
Posts: 4468
Posted: 20 Jul 2004 12:42:27 pm    Post subject:
If it's not hardware related, I'd say this was caused by an ASM program corrupting the system VAT. Those crashes generally take longer to appear and may go undected until the system tries to locate or move another file. They're also accompanied by incorrect (or blank) filesizes under Check RAM. Well, that's my theory..
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Jutt


Advanced Newbie


Joined: 27 Jun 2004
Posts: 94
Posted: 20 Jul 2004 01:25:08 pm    Post subject:
The program I was running was a basic program, so that wouldn't be the problem I think.
I remember I had only about 4 ASM programs all very small and just made as tests. Two were progs to call the runindicator on and off and the others were text output programs. That's not something to crash your calc I guess.
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leofox
INF student


Super Elite (Last Title)


Joined: 11 Apr 2004
Posts: 3562
Posted: 20 Jul 2004 01:41:21 pm    Post subject:
test programs are programs that crash the most. I almost never have crashes, but now i have loads of weird crashes because i'm learning ASM. It's probably an error in the test program. What happened while you were running the Basic game? Did it use the Run Indicator off program?

Maybe the memory was already messed up., but you didn't notice until after the basic prog
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Jutt


Advanced Newbie


Joined: 27 Jun 2004
Posts: 94
Posted: 20 Jul 2004 02:07:22 pm    Post subject:
The basic program didn't use any asm subroutine. When I runned it nothing happened; it just kept showing the home screen. Then I looked in the source to see why it didn't work and at that moment the calculator crashed.

I think the mem was indeed messed up before. Once I had some trouble with an ASM program so I deleted it, but my calculator was never reset since that moment. I guess that caused the trouble.
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agility
Calc Spammer


Calc Guru


Joined: 16 May 2004
Posts: 1266
Posted: 20 Jul 2004 02:10:48 pm    Post subject:
Can you post the source code of those "test files" you were working with? It may help us to determine whether it was those ASM programs or not.
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Jutt


Advanced Newbie


Joined: 27 Jun 2004
Posts: 94
Posted: 20 Jul 2004 02:45:51 pm    Post subject:
These are the Hex codes (I removed the End:0000:End). first two I figured out myself, the other two I found at education.ti.com. The last program is the one I had some troubles with so I deleted it.

runindicator on
CD4791C9

runindicator off
CD4795C9

text output
CD5547
210300
220C80
213A93
CD0D47
CD7547
C9
54484953
20495320
41205445
535400

set contrast high
3E3F
F6C0
CD6640
D310
C9
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sgm


Calc Guru


Joined: 04 Sep 2003
Posts: 1265
Posted: 20 Jul 2004 02:49:34 pm    Post subject:
The run indicator programs are bollixed. They should be CD9147C9 and CD9547C9.

And the contrast thingy can be optimized to 3EFFD310C9.

Last edited by Guest on 20 Jul 2004 02:54:50 pm; edited 1 time in total
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Jutt


Advanced Newbie


Joined: 27 Jun 2004
Posts: 94
Posted: 20 Jul 2004 02:58:08 pm    Post subject:
Sorry, I remember that. I put it wrong there, but I did type them into my calculator as CD9147C9 and CD9547C9. And they worked fine.
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agility
Calc Spammer


Calc Guru


Joined: 16 May 2004
Posts: 1266
Posted: 20 Jul 2004 05:23:03 pm    Post subject:
Check the text output then. Do you have ASM source code that you can provide us with besides just hex codes?
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Jutt


Advanced Newbie


Joined: 27 Jun 2004
Posts: 94
Posted: 21 Jul 2004 05:06:46 am    Post subject:
This is the page I got it from. Besides the hex code there is also the source code; maybe it can help you.
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leofox
INF student


Super Elite (Last Title)


Joined: 11 Apr 2004
Posts: 3562
Posted: 21 Jul 2004 07:43:59 am    Post subject:
this siteshows a similar glitch. Could it be that this happened?
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Jutt


Advanced Newbie


Joined: 27 Jun 2004
Posts: 94
Posted: 21 Jul 2004 10:17:34 am    Post subject:
Something like that could have happened. A while ago I did something similar:
-I stored double quotation marks (") in Y1
-then I did Equ>String(Y1,Str1
-then RCL Str1
And this recalled a bunch of odd characters.
I deleted Str1 to prevent any crashes, but still that could be the cause of the calculator crash.

Btw, that's a nice site. I was intrigued by the [H]-Glitch, because I found a similar one. when you store a lowercase "p" from the [VARS] [Statistics] menu in a string and recall it it will show "Str6" instead of "p"
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DigiTan
Unregistered HyperCam 2


Super Elite (Last Title)


Joined: 10 Nov 2003
Posts: 4468
Posted: 22 Jul 2004 12:33:15 am    Post subject:
Say... Where you ever able to reproduce the crash? I mean by reinacting everything you did; leading up to the problem? That could help us isolate the glitch.
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