SystemVerilog RISC-V RV32I_Zmmul 5-stage single-issue CPU core with branch predictor and L1 caches, tied up with ISA sim over DPI for verification
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Updated
Nov 13, 2025 - SystemVerilog
Unlike most other ISA designs, the RISC-V ISA is provided under open source licenses that do not require fees to use. A number of companies are offering or have announced RISC-V hardware, open source operating systems with RISC-V support are available and the instruction set is supported in several popular software toolchains.
Notable features of the RISC-V ISA include a load–store architecture, bit patterns to simplify the multiplexers in a CPU, IEEE 754 floating-point, a design that is architecturally neutral, and placing most-significant bits at a fixed location to speed sign extension. The instruction set is designed for a wide range of uses. The base instruction set has a fixed length of 32-bit naturally aligned instructions, and the ISA supports variable length extensions where each instruction could be an any number of 16-bit parcels in length. Subsets support small embedded systems, personal computers, supercomputers with vector processors, and warehouse-scale 19 inch rack-mounted parallel computers.
SystemVerilog RISC-V RV32I_Zmmul 5-stage single-issue CPU core with branch predictor and L1 caches, tied up with ISA sim over DPI for verification
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