MarkdownCode is a Drupal module that adds a text filter. The filter allows using fenced code blocks as in Github-style Markdown. It was made and tested for Drupal 7, but you should be able to use it in Drupal 6 with minor modifications.
The site was born when I was assembling my first 3D printer - RepRapPro Mono Mendel. When I've started the site information on practical aspects of the 3d printing was rather scarce, especially in Polish.
