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Everything about R4600

Microprocessor

The R4600, code-named "Orion", is a 64-bit microprocessor developed by Quantum Effect Design (QED) that implemented the MIPS III instruction set architecture (ISA). As QED was a design firm that did not fabricate or sell their designs, the R4600 was first licensed to Integrated Device Technology (IDT), and later to Toshiba and then NKK. These companies fabricated the microprocessor and marketed it. The R4600 was designed as a low-end workstation or high-end embedded microprocessor. Users included Silicon Graphics, Inc. (SGI) for their Indy workstation and DeskStation Technology for their Windows NT workstations. The R4600 was instrumental in making the Indy successful by providing good integer performance at a competitive price. In embedded systems, prominent users included Cisco Systems in their network routers and Canon in their printers. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: R4600A 5-minute orientation
  2. Pick up a classic book: For the Relief of Frederick D. W. Baldwin (H.R. 4600)The most-reprinted book on the subject
  3. Read the landmark paper: Guarded page tables on Mips R4600 or an exercise in architecture-dependent micro optimizationCited 11 times
  4. Go sideways: R5000A closely related topic
  5. Go sideways: R4000A closely related topic

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🗂️ The subject at a glance

  1. History
  2. Description
  3. R4650 and R4640
  4. R4700

🏆 Landmark papers (most cited)

📚 Books worth reading

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