Qsys Testbench Simulation Package Descriptor (.spd) file does not exist

OSeme · ‎01-16-2019

I am trying to simulate Nios 2 design with a floating point unit. I was able to instantiate Nios 2 processor, read inputs from FPGA and produce outputs. Now, I am trying to run a simulation. I understand that process of simulating Nios 2 processor follows different path than hardware simulation. I have a test bench written in Verilog, see code below:

`timescale 1 ps / 1 ps
 
 
module fpu_test2_top_tb();
 
	reg [9:0] in1, in2;
	wire [9:0] out1;
	reg clk;
	
	fpu_test2_top uut(
		.clk(clk),     //  clk.clk
		.in1(in1),  //  in1.export
		.in2(in2),  //  in2.export
		.out1(out1)  // out1.export
	);
	
	always
		begin
			clk = 1;
			#10;
			clk = 0;
			#10;
	end
	
	initial begin
		#11;
		in1 = 7;
		in2 = 2;
		#1;
		$display("output = %d", out1);
	end
	
//	always @(negedge clk)
//	begin
//		#1;
//		$display("output = %d", out1);
//	end
	
endmodule

I can run this test bench from Quartus using ModelSim. However, I don't get output from the processor. I think I have to run Nios 2 simulation out of Eclipse by first generating simulation .elf file. I went in to BSP editor and enabled "enable_sim_optimize"

Then generated BSP package and build both bsp project and application in eclipse itself. I have simulation elf file generated now

However, when I right click on application in Eclipse Run as -> Nios II ModelSim I get following error

Does anyone know how to simulate system that involves Nios II processor? What am I doing wrong here? How can I generate *.spd file?

GuaBin_N_Intel · ‎01-23-2019

For NIOS similation, you can refer to this document and review those steps https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/nios2/n2sw_nii5v2gen2.pdf, 3.11. Running a Nios II System with ModelSim