A 600-MHz superscalar floating-point processor

The floating-point unit of a 600-MHz, out-of order, superscalar RISC Alpha microprocessor is described. The unit achieves 59 SpecFP95 and can transfer register data at up to 9.6 GB/s. It has two independent pipelines for multiply and add/subtract operations, with iterative divide and square-root cir...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 1999-07, Vol.34 (7), p.1026-1029
Main Authors: Clouser, J., Matson, M., Badeau, R., Dupcak, R., Samudrala, S., Allmon, R., Fairbanks, N.
Format: Article
Language:English
Subjects:
Circuits
Clocks
CMOS
CMOS process
Delay effects
Energy consumption
Floating point arithmetic
Microprocessors
Out of order
Pipeline processing
Pipelines
Reduced instruction set computing
Registers
RISC
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Summary:The floating-point unit of a 600-MHz, out-of order, superscalar RISC Alpha microprocessor is described. The unit achieves 59 SpecFP95 and can transfer register data at up to 9.6 GB/s. It has two independent pipelines for multiply and add/subtract operations, with iterative divide and square-root circuits, and is fabricated in a 2.2-V, 0.35-/spl mu/m CMOS process.
ISSN:0018-9200
1558-173X
DOI:10.1109/4.772419