指令集规范(Specification)和处理器实现(Implementation)是两个不同层次的概念,要区分开。指令集(ISA)是规范标准,往往用一本书或几张纸来记录描述,而处理器实现是基于指令集规范完成的源代码。RISC-V是一个指令集规范。 我们可以基于x86/ARM/ RISC-V指令集,进行处理器微架构设计和实现形成源代码,并通过流片最终形...
章节1 引言 输入输出内存管理单元(IOMMU),有时也称为系统MMU(SMMU),是一种系统级的内存管理单元(MMU),它连接了具有直接内存访问能力的输入/输出(I/O)设备与系统内存。 对于通过IOMMU连接到系统的每个I/O设备,软件可以在IOMMU上配置一个设备上下文,该上下文将设备与特定的虚拟地址空间以及其他每个设备的参数关联起来。
RISC-V(跟我读:“risk---five”)是一个基于精简指令集(RISC)原则的开源指令集架构(ISA)。 这里要明确两个概念:指令集规范(Specification)和处理器实现(Implementation)是两个不同层次的概念,要区分开。指令集(ISA)是规范标准,往往用一本书或几张纸来记录描述,而处理器实现是基于指令集规范完成的源代码。RISC-...
RISC-V Performance Events Specification Makefile4CC-BY-4.0402UpdatedMar 12, 2025 riscv-aiaPublic Makefile86CC-BY-4.019291UpdatedMar 12, 2025 riscv-cheriPublic This repository contains the CHERI extension specification, adding hardware capabilities to RISC-V ISA to enable fine-grained memory protection...
需要明确，RISC-V并不是一种处理器或芯片（Implementation），而是指令集规范（Specification）。所谓指令集，是存储在处理器（芯片）内部指导它如何进行运算的一系列规范语言。它是软件和硬件之间的接口，向下定义任何软件程序员需要了解的硬件信息，向上指导应用系统的运转，可以说指令集架构决定了一个处理器的“灵魂”，...
Implements RISC-V PLIC specification Up to 1023 PLIC interrupt sources Up to 255 PLIC interrupt priority levels Up to 16 PLIC interrupt targets Allow individual interrupts to be serviced and prioritized without sharing Enhanced interrupt features ...
The RISC-V base architecture is the interface between application software and hardware. Software that’s coded to this specification will continue to work on RISC-V processors in perpetuity, even as the architecture evolves through the development of new extensions....
RISC-V Debug Specification You may be looking for one of the following pre-built PDFs: Latest release candidate Latest release(This is outdated at this point, and only of historical interest.) Build Instructions #Install docker and python3-sympy, if not installed already.#Pull the latest RISC...
T_BDT 004-2024 RISC-V 单线调试接口技术要求.docx,ICS 35.240.01 CCS L 70 BDT 中国半导体行业协会团体标准 T/BDT 004—2024 RISC-V 单线调试接口技术要求 Technical specification for RISC-V 1-line debug interface (发布稿) 2024- 1 0 - 0 9 发布 2024-
Test suite updated for RV32/64B Bit Manipulation 1.0.0 ratified specification Test suite updated for RISC-V Vectors 1.0.0 ratified specification Configured: spec:1.0.0, xlen:32, elen:32, vlen:256, slen:256, FP:IEEE754 Note ImperasDV users can access other configs of spec, xlen, elen, ...