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Daniel, The direct answer to your question is "yes". However, you probably want a little more information. If your 68hc711 is in a board, you may not be able to invoke the various non-user modes. However, if you have the part in your hot little hand and can take it to some type of development board, you can directly read the code. I have an old MC68HC11EVM and it will dump the code just fine. Perhaps another answer is that if someone wants to dump your code and reverse assemble it, there is not much you can do to stop them. Look at the documentation and look at the boot loader mode. This allows you to program the part and do all sorts of stuff. It has been a zillion years since I have messed with 68HC11's so I don't remember the exact details. Now, there is a particular version of the 68HC711E9 that has a security feature. This feature is essentially an EPROM location that you configure after you have loaded all your own code into the device. When this EEPROM location is configured, it causes all the "non-user and test" modes to become unavailable. In other words, it prevents someone from dumping your code. Of course, when you do this, you are more or less limited to using the single chip mode. So, if you want to dump the code in a device you have, get an 68hc11 EVM board and just do it. If you have one of the 68hc711E9S devices, you are stuck. Bye the bye, if you figure out how to break into an "E9S" device, let me know how you did it. Regards, Charlie -----Original Message----- From: [mailto:] Sent: Saturday, May 03, 2003 3:39 PM To: Subject: [m68HC11] Re: reading the 68HC711 code Hi members, Is it possible to read the internal ROM code of the 68HC711 microcontroller? Thanks, Daniel To unsubscribe from this group, send an email to: ">http://docs.yahoo.com/info/terms/ |
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Re: reading the 68HC711 code
Started by ●May 5, 2003
