21064 150 MHz Microprocessor

This fact sheet provides an overview and technical specifications for the Digital 21064 150 MHz microprocessor, the inaugural chip of the 64-bit Alpha RISC architecture family. The chip is a 0.75 micron CMOS-based, super-scalar, super-pipelined processor featuring dual-instruction issue, a 3.3-volt supply, and a peak execution speed of 300 MIPS. Key features include an on-chip floating point unit, 8 Kbyte instruction and data caches, a demand paged memory management unit, and a privileged architecture library code (PALcode). The document details the instruction set, memory management capabilities, microarchitecture (comprising Ebox, Fbox, Abox, and Ibox units), and pipeline organization. Additionally, it lists operating characteristics such as power requirements, transistor count (1.68 million), and package type (431-pin PGA), along with availability and contact information.