accum.v

A Relatively Simple RISC CPU 设计源码并附详细的说明文档。可以ModelSim进行仿真

module accum( accum, data, ena, clk1, rst);
output[7:0]accum;
input[7:0]data;
input ena,clk1,rst;
reg[7:0]accum;

always@(posedge clk1)
   begin
      if(rst)
         accum<=8'b0000_0000;		//Reset
      else
         if(ena)		//?CPU???????load_acc??
            accum<=data;		//Accumulate
	 end

endmodule