Subject:
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Re: Flash Write Cycles
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Newsgroups:
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lugnet.robotics.nxt
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Date:
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Mon, 11 Sep 2006 13:06:58 GMT
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Reply-To:
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rhempel@+IHateSpam+bmts.com
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Viewed:
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13805 times
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David Wallace wrote:
>
> Does the NXT firmware have a bootloader that is locked in the first couple
> of sectors? And if so, why would it be required to be unlocked?
As I understand it, the lock bits are only touched if SAMBA mode
is entered, which is done when the reset button is pressed for more
than about three seconds.
At that point, the ARM erases the bottom two sectors and installs
the SAMBA firmware into FLASH and locks the lock bits. Argh.
The LEGO firmware can then be loaded, and I believe it contains
a SAMBA compatible firmware downloader too, but it leaves
the lock bits open.
Ralph
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Message has 1 Reply:
 | | Re: Flash Write Cycles
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| (...) Whether you reset the brick or just run the download firmware routine in the LEGO Mindstorms NXT software or in RobotC or in NBC/BricxCC you've put the brick in SAMBA mode (clicking brick mode) and the lock bits have been cycled. But I have (...) (18 years ago, 12-Sep-06, to lugnet.robotics.nxt)
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Message is in Reply To:
| | Re: Flash Write Cycles
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| "Sivan Toledo" <stoledo@tau.ac.il> wrote in message news:J5DMMp.Bs5@lugnet.com... (...) firmware (...) called (...) True, you can't level the firmware - only file systems can be wear leveled. I understand that there has been discussion concerning (...) (18 years ago, 10-Sep-06, to lugnet.robotics.nxt)
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