Many Changes

I added a comparator, I updated the control unit so that it now uses the 4 bit ALU opcode instead of the 3 bit from before. I added testbenches to the control unit and the slt and comparator modules. However, like before I unable to run the simulation on my desktop. Finally, i added the program code for the equation solver as a test bench in the CPU9bit module

lab2CA.srcs/sources_1/new/CPU9bits.v

@@ -88,4 +88,44 @@ module CPU9bits(input wire [8:0] instr,
         .switch(loadS));
      
          
+endmodule
+
+module CPU9bits_tb();
+    reg [8:0] instruction;
+    reg clk, reset;
+    wire done;
+    
+    initial begin
+        clk = 1'b0;
+    end
+    always begin
+        #5 clk = ~clk; // Period to be determined
+    end
+
+    CPU9bits CPU9bits0(
+        .instr(instruction),
+        .reset(reset),
+        .clk(clk),
+        .done(done));
+        
+    initial begin
+        reset = 0;
+        #10
+        reset = 1;
+        #10
+        instruction = 000100000;
+        #10
+        instruction = 000101001;
+        #10
+        instruction = 010100010;
+        #10
+        instruction = 111100000;
+        #10
+        instruction = 111100000;
+        #10
+        instruction = 000000000;
+        #10    
+        $finish;
+        
+    end
 endmodule