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MIPS R10000 Microprocessor User Guide, Version 2.0
(document number: 007-2490-001 / published: 1997-01-30)    table of contents  |  additional info  |  download
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1.3 What is an R10000 Microprocessor?

Functional Units

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The five execution pipelines allow overlapped instruction execution by issuing instructions to the following five functional units:

• two integer ALUs (ALU1 and ALU2)
• the Load/Store unit (address calculate)
• the floating-point adder
• the floating-point multiplier

There are also three "iterative" units to compute more complex results:

• Integer multiply and divide operations are performed by an Integer Multiply/Divide execution unit; these instructions are issued to ALU2. ALU2 remains busy for the duration of the divide.
• Floating-point divides are performed by the Divide execution unit; these instructions are issued to the floating-point multiplier.
• Floating-point square root are performed by the Square-root execution unit; these instructions are issued to the floating-point multiplier.

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Copyright 1996, 1997, MIPS Technologies, Inc. -- 09 DEC 96

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MIPS R10000 Microprocessor User Guide, Version 2.0
(document number: 007-2490-001 / published: 1997-01-30)    table of contents  |  additional info  |  download

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