[BNU] Re: Exception commands
- From: Joseph Lee <joseph.lee22590@xxxxxxxxx>
- To: Megan Hudgins <hudginsmegan47@xxxxxxxxx>, joseph.lee22590@xxxxxxxxx, daniel.semro@xxxxxxxxx
- Date: Mon, 29 Jul 2013 12:19:26 -0700
Hi,
The clear settings reset just restores default settings, but does
not wipe your data. To do this, you have to go to support
information mode and perform a hidden command to reformat the
flash disk.
So what exactly does the exception message state? That way we'd
be able to narrow the possibilities.
Cheers,
Joseph
----- Original Message -----
From: Megan Hudgins <hudginsmegan47@xxxxxxxxx
To: Joseph Lee <joseph.lee22590@xxxxxxxxx>,
daniel.semro@xxxxxxxxx
Date sent: Mon, 29 Jul 2013 15:11:27 -0400
Subject: Re: [BNU] Re: Exception commands
Thanks for the explanation Joseph.
I've just been doing a soft reset when I get the "exception
command" messages.
They still happen, but it clears up for the moment, anyway.
Isn't the 456 reset the one that clears all your data? Just
curious.
----- Original Message -----
From: Joseph Lee <joseph.lee22590@xxxxxxxxx
To: Daniel Semro <daniel.semro@xxxxxxxxx>,
joseph.lee22590@xxxxxxxxx
Date sent: Mon, 29 Jul 2013 11:53:52 -0700
Subject: Re: [BNU] Re: Exception commands
Hi Daniel,
Unfortunately, even doing a clear settings reset will not help,
as it is directly related to hardware (and, to some extent,
software). Although clear settings reset will delay this
problem, it'll still happen (sorry about that).
Cheers,
Joseph P.S. Was I harsh? If I was, sorry.
----- Original Message -----
From: Daniel Semro <daniel.semro@xxxxxxxxx
To: joseph.lee22590@xxxxxxxxx
Date sent: Mon, 29 Jul 2013 13:48:49 -0500
Subject: Re: [BNU] Re: Exception commands
Hi Joseph and Megan,
Megan, to fix the "exception messages", I would do a "clear
settings RESET."
To do that:
Press and hold dots 4-5-6, and press the reset button (gently.)
You should hear:
1. A beep confirming the unit has been reset.
(and "starting KeySoft" should appear on the display
2. after a short while you should hear:
(music) and then
KeySoft version 9 2 2, build 1075
main menu.
Let me know if you have any further questions, I'm always
delighted to help.
Daniel Semro
daniel.semro@xxxxxxxxx
On 7/29/13, Joseph Lee <joseph.lee22590@xxxxxxxxx> wrote:
Hi,
An exception means that there must be something exceptional
(sort
of out of ordinary operation) going
on. Usually, the exceptions so far deals with memory and data
access. It comes in the following forms:
* Data misalignment: BrailleNote's processor is a 32-bit ARM
CPU,
so that each instruction for it requires four bytes (32 zero's
and/or 1's). If that is not the case (say if the length is 24
bits or something else), then the processor will see that the
data is not aligned (doesn't fit it, or doesn't make sense). To
avoid this, a technoique called "padding" is used (to fill the
gaps).
* Access violation: Usually, a program should work with its own
memory space. However, at times, a program may ask to write to
(store) or read from (load) some location in memory (or a
storage
device) that it doesn't have access to. The two common forms
are
an invalid (or outdated) location (or what's called "address")
or
0 (we software guys call it "null"). In many cases, it'll be 0
or some other memory location (usually RAM).
When this occurs, the OS (operating system, or system software)
notifies the user that the program is not doing what is right
(doing what it is supposed to do), hence giving you an exception
message. These are quite serious (especially if it says,
"access
violation reading 0") but not as serious as KeySoft being
terminated (application errors, as these are caused by KeySoft
doing something seriously out of bounds).
I believe Alex knows more about this topic than I do (hope I
gave
a simle explanation).
Cheers,
Joseph
----- Original Message -----
From: Megan Hudgins <hudginsmegan47@xxxxxxxxx
To: braillenote@xxxxxxxxxxxxx
Date sent: Mon, 29 Jul 2013 14:16:02 -0400
Subject: [BNU] Exception commands
Hi,
Can anyone please tell me what exactly an exception command is
and what they are for?
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Website: www.braillenoteusers.info
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BNU: BrailleNote Users - a forum for users of BrailleNote family of products
from Humanware.
Website: www.braillenoteusers.info
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