File size: 874 Bytes
78c261f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | module alu_tb;
reg [31:0] a;
reg [31:0] b;
reg [2:0] op;
wire [31:0] out;
alu alu(a, b, op, out);
initial begin
a = 0;
b = 0;
op = 0;
#10;
a = 32'h0000000f;
b = 32'h00000004;
op = 3'b000; //ADD
#10;
$display("a = %h, b = %h, operation = %h, out = %h",a,b,op,out);
#10;
op = 3'b001; // SUB
#10;
$display("a = %h, b = %h, operation = %h, out = %h",a,b,op,out);
#10;
a = 32'h00001111;
b = 32'h00000004;
op = 3'b010; // AND
#10
$display("a = %h, b = %h, operation = %h, out = %h",a,b,op,out);
#10
a = 32'h00000001;
b = 32'h00000002;
op = 3'b011; // Logical Shift Left
#10
$display("a = %h, b = %h, operation = %h, out = %h",a,b,op,out);
#10
$finish;
end
endmodule
|