CompArchFA17 · bwerth · Oct 4, 2017 · Oct 7, 2017 · Oct 11, 2017 · Oct 11, 2017
diff --git a/ADD.JPG b/ADD.JPG
diff --git a/AND.JPG b/AND.JPG
diff --git a/CompArch_Lab1.pdf b/CompArch_Lab1.pdf
diff --git a/NAND.JPG b/NAND.JPG
diff --git a/OR.JPG b/OR.JPG
diff --git a/SLT.JPG b/SLT.JPG
diff --git a/SUB.JPG b/SUB.JPG
diff --git a/Waveform.JPG b/Waveform.JPG
diff --git a/XOR.JPG b/XOR.JPG
diff --git a/alu.t.v b/alu.t.v
@@ -0,0 +1,108 @@
+`include "alu.v"
+
+module testALU ();
+   reg [31:0] operandA, operandB;
+   reg [2:0] command;
+   reg [9:0] numBroken = 0;
+   wire [31:0] result;
+   wire carryout, ofl, zero;
+
+   ALU testALU(.result (result), .carryout (carryout), .overflow (ofl), .zero (zero), .operandA (operandA), .operandB (operandB), .command (command));
+
+   task checkTestCase;
+   input [31:0] expectedResult;
+   input expectedCarryout, expectedOfl, expectedZero;
+
+   begin
+      $display("Testing command %b, operandA %b, and operandB %b", command, operandA, operandB);
+      if (result == expectedResult) begin
+          $display("Test Passed, result is %b, carryout is %b, ofl is %b, and zero is %b", result, carryout, ofl, zero);
+      end else begin
+          numBroken = numBroken + 1;
+          $display("ERROR: Expected %b for result, %b for carryout, %b for ofl, and %b for zero, but actual output was %b, actual carryout was %b, actual ofl was %b, and actual zero is %b", expectedResult, expectedCarryout, expectedOfl, expectedZero, result, carryout, ofl, zero);
+      end
+   end
+   endtask
+
+   initial begin
+
+      //Add
+      command = 0; operandA = 0; operandB = 0; #2900
+      checkTestCase(0, 0, 0, 1);
+      command = 0; operandA = 32'b11111111111111111111111111111111; operandB = 32'b11111111111111111111111111111111; #2910
+      checkTestCase(32'b11111111111111111111111111111110, 1, 0, 0);
+      command = 0; operandA = 32'b10000000000000000000000000000001; operandB = 32'b01111111111111111111111111111111; #2910
+      checkTestCase(0, 1, 0, 1);
+      command = 0; operandA = 32'b10000000000000000000000000000000; operandB = 32'b10000000000000000000000000000000; #2910
+      checkTestCase(0, 1, 1, 1);
+      command = 0; operandA = 32'b11010101010101010101011010101010; operandB = 32'b00000001111111111111111101101010; #2910
+      checkTestCase(32'b11010111010101010101011000010100, 0, 0, 0);
+
+      //Sub
+      command = 1; operandA = 0; operandB = 0; #5800
+      checkTestCase(0, 0, 0, 1);
+      command = 1; operandA = 32'b11111111111111111111111111111111; operandB = 32'b00000000000000000000000000000001; #5810
+      checkTestCase(32'b11111111111111111111111111111110, 1, 0, 0);
+      command = 1; operandA = 32'b10000000000000000000000000000001; operandB = 32'b10000000000000000000000000000001; #5810
+      checkTestCase(0, 1, 0, 1);
+      command = 1; operandA = 32'b10000000000000000000000000000000; operandB = 32'b10000000000000000000000000000000; #5810
+      checkTestCase(0, 1, 1, 1);
+      command = 1; operandA = 32'b11010101010101010101011010101010; operandB = 32'b11111110000000000000000010010101; #5810
+      checkTestCase(32'b11010111010101010101011000010101, 0, 0, 0); 
+
+      //XOR
+      command = 2; operandA = 32'b11111111111111111111111111111111; operandB = 32'b00000000000000000000000000000000; #80
+      checkTestCase(32'b11111111111111111111111111111111, 0, 0, 0);
+      command = 2; operandA = 32'b11111111111111111111111111111111; operandB = 32'b11111111111111111111111111111111; #80
+      checkTestCase(32'b00000000000000000000000000000000, 0, 0, 1);
+      command = 2; operandA = 32'b00101010101010101010111010111101; operandB = 32'b00001010101010110101010010110101; #80
+      checkTestCase(32'b00100000000000011111101000001000, 0, 0, 0);
+
+      //SLT         
+      command = 3; operandA = 32'b11111111111111111111111111111111; operandB = 32'b00000000000000000000000000000000; #5850
+      checkTestCase(32'b11111111111111111111111111111111, 0, 0, 1);
+      command = 3; operandA = 32'b11111111111111111111111111111111; operandB = 32'b11111111111111111111111111111111; #5850
+      checkTestCase(32'b00000000000000000000000000000000, 0, 0, 1);
+      command = 3; operandA = 32'b00000000000000000000000000000000; operandB = 32'b11111111111111111111111111111111; #5850
+      checkTestCase(32'b00000000000000000000000000000000, 0, 0, 0);
+
+      //AND
+      command = 4; operandA = 32'b11111111111111111111111111111111; operandB = 32'b00000000000000000000000000000000; #40
+      checkTestCase(32'b00000000000000000000000000000000, 0, 0, 1);
+      command = 4; operandA = 32'b11111111111111111111111111111111; operandB = 32'b11111111111111111111111111111111; #40
+      checkTestCase(32'b11111111111111111111111111111111, 0, 0, 0);
+      command = 4; operandA = 32'b00000000000000111111111111111111; operandB = 32'b01000100000101011101110111011011; #40
+      checkTestCase(32'b00000000000000011101110111011011, 0, 0, 0);
+
+      //NAND
+      command = 5; operandA = 32'b11111111111111111111111111111111; operandB = 32'b00000000000000000000000000000000; #50
+      checkTestCase(32'b11111111111111111111111111111111, 0, 0, 0);
+      command = 5; operandA = 32'b11111111111111111111111111111111; operandB = 32'b11111111111111111111111111111111; #50
+      checkTestCase(32'b00000000000000000000000000000000, 0, 0, 1);
+      command = 5; operandA = 32'b00000000000000111111111111111111; operandB = 32'b01000100000101011101110111011011; #50
+      checkTestCase(32'b11111111111111100010001000100100, 0, 0, 0);
+
+      //NOR
+      command = 6; operandA = 32'b11111111111111111111111111111111; operandB = 32'b00000000000000000000000000000000; #50
+      checkTestCase(32'b00000000000000000000000000000000, 0, 0, 1);
+      command = 6; operandA = 32'b00000000000000000000000000000000; operandB = 32'b00000000000000000000000000000000; #50
+      checkTestCase(32'b11111111111111111111111111111111, 0, 0, 0);
+      command = 6; operandA = 32'b00000000000000111111111111111111; operandB = 32'b01000100000101011101110111011011; #50
+      checkTestCase(32'b10111011111010000000000000000000, 0, 0, 0);
+
+      //OR
+      command = 7; operandA = 32'b11111111111111111111111111111111; operandB = 32'b00000000000000000000000000000000; #40
+      checkTestCase(32'b11111111111111111111111111111111, 0, 0, 0); 
+      command = 7; operandA = 32'b00000000000000000000000000000000; operandB = 32'b00000000000000000000000000000000; #40
+      checkTestCase(32'b00000000000000000000000000000000, 0, 0, 1);
+      command = 7; operandA = 32'b00000000000000111111111111111111; operandB = 32'b01000100000101011101110111011011; #40
+      checkTestCase(32'b01000100000101111111111111111111, 0, 0, 0);
+
+      $display("%d test cases failed", numBroken);
+
+   end
+endmodule
+
+
+
+