Was self-modifying-code possible using BASIC? Parameters: - On commonly affordable home-computers before 1984 - Code that changes its own instructions while it is executing - Using BASIC only - Not using peek, poke or assembly language Possible types of solutions: Were there any machines on which the following theoretical example program might work? 10 Let Line 20 = Print "word" 20 Print "nothing" Or just: 10 Let Line 10 = Print "word" Or the following pseudo-code? 10 Print "10 Print "word"" + [ A special carriage-return that makes the computer accept this as the new 'Line 10' ] In the example above, if you print the new line 10 to the screen, is there any special carriage-return that makes the computer accept this as the new 'Line 10'? Note: - If you did get the computer to modify a line, and you modified the line to be longer than it originally was, could it unknowingly overwrite part of the following line? Outside of program execution mode if you modify a line to be longer than it was, the computer knows how to shift data forward. I would probably have to ask a separate question to ask: - How was self-modifying-code used to save space? - Were there any other interesting uses for self-modifying code that would have been possible on the machines specified in this question? - Could you somehow set a data file as the new current program? - How many programs or data files could be held at one time?