Added all Testbenches to Modelsim and confirmed working operation

Quartus/A1_Q3/db/asu.hier_info

@@ -1,23 +1,27 @@
 |asu
-op[0] => operand[0].IN0
-op[0] => operand[1].IN0
-op[0] => operand[2].IN0
-op[0] => operand[3].IN0
+op[0] => operand[3].OUTPUTSELECT
+op[0] => operand[2].OUTPUTSELECT
+op[0] => operand[1].OUTPUTSELECT
+op[0] => operand[0].OUTPUTSELECT
 op[0] => _.DATAB
 A[0] => _.DATAD
 A[1] => _.DATAD
 A[2] => _.DATAD
 A[3] => OUT_CIN.IN1
 A[3] => _.DATAD
-B[0] => operand[0].IN1
-B[1] => operand[1].IN1
-B[2] => operand[2].IN1
-B[3] => operand[3].IN1
-OUT_1[0] << _.SUM_OUT
-OUT_1[1] << _.SUM_OUT
-OUT_1[2] << _.SUM_OUT
-OUT_1[3] << _.SUM_OUT
-COUT[0] << _.SUM_OUT
-OUT_CIN[0] << OUT_CIN.DB_MAX_OUTPUT_PORT_TYPE
+B[0] => operand[0].DATAB
+B[0] => operand[0].DATAA
+B[1] => operand[1].DATAB
+B[1] => operand[1].DATAA
+B[2] => operand[2].DATAB
+B[2] => operand[2].DATAA
+B[3] => operand[3].DATAB
+B[3] => operand[3].DATAA
+OUT_1[0] <= _.SUM_OUT
+OUT_1[1] <= _.SUM_OUT
+OUT_1[2] <= _.SUM_OUT
+OUT_1[3] <= _.SUM_OUT
+COUT[0] <= _.SUM_OUT
+OUT_CIN[0] <= OUT_CIN.DB_MAX_OUTPUT_PORT_TYPE