On: Each New Boot a Miracle – DOSBOX in the Browser

Or if you run WordStar, maybe you'll get George R.R. Martin to switch machines :)

Edit for context: http://www.cnet.com/news/at-game-of-thrones-premiere-nerds-c...

I doubt he uses WordStar because he likes it over the alternatives. He probably uses it to avoid distractions, and a new machine would negate that.