Waterman and colleagues: RISC-V user-level ISA version 2.0

What changed

Specified modular user-level ISA base and extensions in a public technical report.

Scientific scope

The record is the exact four-author 2014 Berkeley technical report. The 2011 base report, privileged architecture, later ratification, hardware implementations, software ports and institutional stewardship remain separate.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is the exact four-author 2014 Berkeley technical report. The 2011 base report, privileged architecture, later ratification, hardware implementations, software ports and institutional stewardship remain separate.

Contributors

• Andrew Waterman · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
• Yunsup Lee · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
• David A. Patterson · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
• Krste Asanović · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.

• RISC-V International original-specification listing
• Berkeley technical report for the RISC-V user-level ISA version 2.0

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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