If the point is running old QBasic code in a browser, it's probably better to compile DosBox to HTML5 and run the original QBasic interpreter in that, as is don

If the point is running old QBasic code in a browser, it's probably better to compile DosBox to HTML5 and run the original QBasic interpreter in that, as is done on archive.org: https://archive.org/search.php?query=subject%3A%22qbasic%22 https://archive.org/search.php?query=subject%3A%22qbasic%22 Nibbles: https://archive.org/details/NibblesQbasic https://archive.org/details/NibblesQbasic