Files
file	riscv_i32_decode.cdl
	Instruction decoder for RISC-V implementation.

Detailed Description

Modules

module riscv_i32_decode::riscv_i32_decode	(	input t_riscv_i32_inst	instruction,
		output t_riscv_i32_decode	idecode,
		input t_riscv_config	riscv_config
	)

Parameters

[in] riscv_config Instruction decoder for RISC-V I32 instruction set.

This is based on the RISC-V v2.2 specification (hence figure numbers are from that specification)

It provides for the option of RV32E and RV32M.

RV32E indicates an illegal instruction if a register outside 0-15 is accessed.

RV32M provides decode of multiply and divide; if it is not desired then the instructions are decoded as illegal.