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MIPS (Microprocessor without Interlocked Pipeline Stages) is a RISC architecture made by MIPS Technologies in 1981. Many versions of MIPS were made. MIPS currently contains an instruction set (ISA) and a control register (processor register). MIPS uses Big-Endian endianness. MIPS processors are commonly used for embedded systems.
NOTE: MIPS Technologies was formerly called MIPS Computer Systems, Inc.
The MIPS processor is not a weak processor. In fact, it is powerful enough for gaming uses. For instance, the MIPS processor was used in Sony's Playstation 1, Playstation 2, and Playstation Portable (PSP).
Many version have been made. The two current versions (as of 2015) are MIPS32 and MIPS64. Each new version contains its predecessors.
- MIPS I - The first MIPS processor was released in 1985. The MIPS I chip was called the R2000 Microprocessor.
- MIPS II - In 1990, MIPS II was released and the chip was named the R6000 Microprocessor.
- MIPS III - In 1992, MIPS III was made and introduced 64-bit registers, integer instructions, and bus among other new features. R4000 was the MIPS III CPU chip and was one of the first 64-bit CPUs. This chip contained 1200000 transistors.
- MIPS IV - In 1994, MIPS IV was made and used in the R8000 CPU. MIPS IV had all of the features in previous MIPS chips plus new features. MIPS IV support additional float-point operations, integer pipelines, branch prediction, and more. The R8000 CPU contained 2600000 transistors.
- MIPS V - In 1996, MIPS V was released and offered features for 3D graphics.
- MIPS32 - In 1999, MIPS32 was made. This architecture is 32-bit and primarily based on MIPS II. However, many features from other versions are also in this revision.
- MIPS64 - In 1999, MIPS64 was made. This architecture is 64-bit and primarily based on MIPS V. However, many features from other versions are also in this revision.
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- Introductory Microprocessor Concepts - http://dcjtech.info/topic/introductory-microprocessor-concepts/