register_file.h

SystemC 实现 MIPS 处理器 源代码

#ifndef RegisterFile_H
#define RegisterFile_H

#include "STDAFX.h"

//寄存器堆
SC_MODULE(Register_File)
{
	//要读取的寄存器编号
	sc_in<sc_uint<5> > read_regID1,read_regID2;

	//要写入的寄存器编号
	sc_in<sc_uint<5> > write_regID;

	//要写入的寄存器数据
	sc_in<sc_uint<32> > write_reg_data;

	//是否可以写入，写入使能端
	sc_in<bool> write_enabled;

	//输出的寄存器数据
	sc_out<sc_uint<32> > result1,result2;

	//输入时钟信号，上升沿时可以写入
	sc_in_clk clk;

	//寄存器数据
	sc_uint<32> reg_data[32];

	void read()
	{
		unsigned int ID1,ID2;
		ID1=read_regID1.read().to_uint();
		ID2=read_regID2.read().to_uint();

		result1.write(reg_data[ID1]);
		result2.write(reg_data[ID2]);

		/*
		cout<<"reg: ";
		cout<<sc_simulation_time()<<endl;
		cout<<reg_data[ID1]<<" "<<reg_data[ID2]<<endl;
		cout<<"reg1: "<<reg_data[1]<<endl;
		*/
	}

	void write()
	{
		unsigned int ID;
		if (write_enabled==true)
		{
			ID=write_regID.read().to_uint();
			if (ID!=0) reg_data[ID]=write_reg_data.read();

			//cout<<"Register "<<ID<<" has been changed "<<sc_simulation_time()<<endl;
		}
	}

	SC_CTOR(Register_File)
	{
		int i;
		for (i=0;i<32;++i) reg_data[i]=i;


		//下降沿读数据
		SC_METHOD(read);
		sensitive_neg<<clk;	
		//sensitive<<read_regID1<<read_regID2<<write_regID<<write_reg_data<<write_enabled;

		//随时可写数据
		SC_METHOD(write);
		//sensitive_neg<<clk;
		sensitive<<read_regID1<<read_regID2<<write_regID<<write_reg_data<<write_enabled;
	}
};

#endif