Chapter 12. Memory Editor

You can follow the instructions in this chapter without doing those of the previous ones. For this, before doing them:

• with the Arduino:
  • assemble the toy computer components as explained in the assembly instructions.
  • connect the Arduino to your computer. Press the ERASE button for a few seconds, then press the RESET button. In a terminal on the host computer, type python3 flash_helper.py < backups/memory_editor.txt (in the directory where you unzipped scripts.zip).
• with the emulator: open this page.

12.6 Experiments

Note: if you use the emulator, the 'type "w00200000"' instruction should give an "Unsupported address" error message instead of blinking the LED. This is because, in case of errors, the emulator shows a message instead of executing the Hard Fault handler. You then need to reload the emulator page and to redo the previous instructions.

Note: if you use the emulator, for the last experiment, after typing "w000c02b4", click on the RESET button instead of "unplugging" the Arduino from the power outlet (which is not possible with the emulator).