Design and Implementation of Multiplication Circuit in RV32IM Processor

In order to achieve the integer multiplication operation in the RV32IM processor, The "M" standard extension of the integer multiplication of the RISC-V instruction set is implemented. For achieving the design for multiplication instructions, it uses the Booth algorithm of Base 4 and the Wallace Tree 4-2 Compressor.The design embedded in the RV32IM processor, through the simulation and SMIC 65nm high density standard cell library to show that:The multiplication circuit functions correctly and significantly improved the operation efficiency of the multiplication, the maximum operating frequency can reach 500MHz.