Make protected BASIC code visible#
Sometimes Atari BASIC is protected and the user isn't able to see inside the source code. This is a main disadvantage, especially, when the original code is damaged. In order to preserve the software genuine, there is a need to solve this problem.![]() |
Luckily, living legend Avery Lee, the creator of the Atari Altirra

Given the fact the user has already just loaded in the BASIC code without executing, then just the F8 key has to be pressed to force an interrupt:
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Afterwards, in the Console window, just type in these 2 lines:
.basic_rebuildvnt
.basic_rebuildvvt
and press the F8 key again. That's all. Now back in BASIC, you can list the source code in it's original form or save it to disk. :-)
The 2 lines executed in Altirra, do the following things:
.basic_rebuildvnt ; Rebuild BASIC variable name table
.basic_rebuildvvt ; Rebuild BASIC variable value table
Again, we deeply, deeply have to thank Avery Lee for his gigantic help to the community worldwide. Thank you so much Avery. :-)
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Debug_.jpg | 196.7 kB | 1 | 08-Feb-2020 21:13 | Roland B. Wassenberg | Debug_.jpg |
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