A 450-MHz RISC microprocessor with enhanced instruction set and copper interconnect. - Carmine Nicoletta; Jose Alvarez; Eric Barkin; Chai-Chin Chao; Brad R. Johnson; Franklin M. Lassandro; Paresh Patel; Douglas Reid; Hector Sanchez; Joshua Siegel; Michael Snyder; Steven Sullivan; et al. (IEEE J. Solid State Circuits, 1999)