The Game of Thrones (UK books and films, US books and films) writer this week revealed that he still works on a DOS PC. BBC News quaintly explained that “disk operating systems were popular” but, seriously, DOS? Now?

Here’s where he revealed it, but then hang on for what that really means to do this.

The tech website Geek.com did a nice job researching this and brought us a screen grab of what that probably looks like:

But it’s one thing seeing an image and thinking, okay, well, not pretty but it works. And it’s another thing seeing WordStar in action. This is a YouTube video of WordStar 3.0, the version before Martin’s favourite, but substantially the same. Now imagine writing thousands of pages in this.