Dan Potter has released his code for his boot loader for the Dreamcast. Here is a tad bit of what he said on his site.
“I was writing some email about my Navi stuff and realized that I had never checked in my boot loader to CVS! It’s pretty messy and it’s not exactly what you’d call elegant code 😉 but it does work, and it’s called Taro.”
Better late then never. Find out more here.