RISC-V
Instruction Set Architecture

General

• History
• Families

Base Variants(base)

• RV32
• RV64
• RV128

Standard Extensions(all)

• A
• B
• C
• D
• E
• F
• G
• I
• J
• L
• M
• N
• P
• Q
• T
• V

Topics

• Foundation
• Non-Standard Extensions
• Addressing Modes
• Registers
• Assembly
• Interrupts
• Microarchitectures

Various microarchitectures have been designed for RISC-V by a number of companies. Below is a list of those microarchitectures.

List of RISC-V microarchitectures

Designer	ISA	Microarchitectures
Andes	RV32IMAC	N25
Codasip	RV32[E,I]MC[F]	CODIX-BK3
	RV[32,64]IMC[F][D]	CODIX-BK5
	RV64IMAC, RV64GC	CODIX-BK7
Esperanto	RV64GC	ET-Minion, ET-Maxion
Google	RV32IMC	BottleRocket
Microsemi	RV32IMA/F	Mi-V
Nvidia	RV64I	NV-RISCV
SiFive	RV32IMAC	E31
	RV64IMAC	E51
	RV64GC	E54-MC
	RV[32,64]IMAFDCV	7 Series
T-Head	RV64GC[V,RV]	C910
	RV32[EMC,EC,IMC]	E902
	RV64GC[V]	C906
Universities	RV32IM	Vanilla-5
	RV32G/RV64G	Rocket