Dreamcast

Nightmare Emulator

System Requirements
Since the Dreamcast is such a powerful machine it takes quite
a powerful PC to emulate it, as a result you must have at LEAST
a Voodoo1 based card, card with 16mb, Voodoo2 is preferable and I'm sure the
Voodoo3 card will run just great!

RECOMMENDED REQUIREMENT
PII 400Mhz Processor
128MB RAM

Links