Hardware and Environment Modeling

This chapter explores the role of RISC-V in the Internet of Things (IoT) era, emphasizing its popularity due to its open and free instruction set architecture. The chapter introduces virtual prototypes (VPs) as a crucial tool, addressing the gap between early system design and fully finished systems. It presents a RISC-V based VP that supports multi-core platforms, operating systems, and offers faster simulation compared to RTL. The discussion extends to an Environment Model GUI for simulation of off-chip devices, and a debugging visualization tool called RISCVIEW, and a method to bridge the TLM/RTL gap in SoC design using Hardware-in-the-Loop (HWITL) simulations with FPGAs. The proposed VPIL strategy enables early Design Space Exploration (DSE) and validation, enhancing the efficiency of SoC development. The chapter concludes with suggestions for further extensions to the approach for specialized applications.