In this paper. we present a RISC-V RV32I-based system-on-chip (SoC) design approach using the Vivado high-level synthesis (HLS) tool. The proposed approach consists of three separate levels: The first one is an HLS design and simulation purely in C++. The second one is a Verilog simulation of the HLS-generated Verilog implementation of the CPU core. https://thegreensjunglebeautyshops.shop/product-category/konjac-sponge/