R5000 is a 64-bit, little endian superscalar, in-order execution 2-issue design microprocessor, that implements the MIPS IV instruction set architecture developed by Quantum Effect Design in 1996.
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11 Facts About R5000
2.
The R5000 succeeded the QED R4600 and R4700 as their flagship high-end embedded microprocessor.
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3.
The R5000 was sold to PMC-Sierra when the company acquired QED.
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4.
Derivatives of the R5000 are still in production today for embedded systems.
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5.
The R5000 was used in embedded systems such as network routers and high-end printers.
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6.
The R5000 found its way into the arcade gaming industry, R5000 powered mainboards were used by Atari and Midway.
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7.
R5000 is a two-way superscalar design that executes instructions in-order.
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8.
The R5000 did not perform dynamic branch prediction for cost reasons.
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9.
R5000 had large L1 caches, a distinct characteristic of QED, whose designers favored simple designs with large caches.
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10.
The R5000 had two L1 caches, one for instructions and the other for data.
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11.
The initial R5000 did not support multiprocessing, but the package reserved eight pins for the future addition of this feature.
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