The Dreamcast is the final home video game console manufactured by Sega. It was released in Japan on November 27, 1998, and worldwide in late 1999. It succeeded the Sega Saturn and was the first sixth-generation console, preceding Sony's PlayStation 2, Nintendo's GameCube, and Microsoft's Xbox.

https://github.com/wtetzner/waterbear
Assembler/Disassembler for the Dreamcast VMU