What is the cause of Verilog error message 10159 in my binary calculator code?

[polaris90]

I'm currently working on a project to create a binary calculator using verilog, which I will eventually program onto a DE2 FPGA board. I am trying to wrte my code but I keep getting the following error message.
"Error (10159): Verilog HDL error at calculator.v(37): "Display" is not a task or void function"

I have never seen this before. The following is part of my code where this happens

always @(*)begin


if(KEY[0] == 0 && KEY[0] != 1) //if addittion button
    
    result = SW[15:8] + SW[7:0];  //addition for the 2 numbers     


    Display (SW[15:8], HEX6);  <--- error occurs here

this is my module that I'm calling

module Display(num, hex);


input [7:0] num; //8-bit input
    output reg [6:0] hex; //7-segment display
    
    always@(num) begin


case(num)                                            
            
            0: hex =  7'b1000000;
            1: hex =  7'b1111001;
            2: hex =  7'b0100100;
            3: hex =  7'b0110000;
            4: hex =  7'b0011001;
            5: hex =  7'b0010010;
            6: hex =  7'b0000010;
            7: hex =  7'b1111000;
            8: hex =  7'b0000000;
            9: hex =  7'b0010000;
            10: hex = 7'b0001000;
            11: hex = 7'b0000011; //B
           12: hex = 7'b1000110; //C
           13: hex = 7'b0100001; //D
            14: hex = 7'b0000110; //E
            15: hex = 7'b0001110; //F
                default: hex = 7'b1000000;
          endcase
        end
    
endmodule

I'm not sure if this is the right forum to post this question but any advice would be appreciated.

 

[the_emi_guy]

You are getting the error because you are not instantiating the module "Display" correctly in your top level. It should be:
Display Name_of_this_Particular_Instance_of_the_Module_Display (SW[15:8], HEX6);

or

Display Display_Instance1 (SW[15:8], HEX6);

Why are you passing SW[15:8] to the display and not the result of the addition?

 

[polaris90]

I'm passing one of the inputs because I need to display both the input and output. That's just a piece of the ode like I said. I took the call out of the "always @" and it solved the problem. Thank you for the reply.