MAIN modes driver

MAIN.py

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+import subprocess
+print('\n')
+print("::::::::::  RISC V SIMULATOR :::::::::::::")
+print('\n')
+
+#cmd = input("Enable cache ? (y/n) ")
+
+op = input("Press 1 for GUI and 2 to continue in terminal: ")
+
+if op=="2": #in terminal
+    print(":: Modes ::")
+    print("1) Without Pipelining")
+    print("2) With Pipelining but no data forwarding")
+    print("3) With Pipelining and data forwarding")
+    print('\n')
+
+    mode = input("Enter Mode 1/2/3: ")
+
+    if mode!="1": 
+    	  knob1 = input("Enable 1-bit branch predictor ? (y/n) ")
+
+    if mode=="1":
+          subprocess.call(['python3', 'unpipelined.py']) #unpipelined
+    elif mode=="2" and knob1!="y": 
+          subprocess.call(['python3', 'stall_no_dataforwarding.py']) #pipline without datafrwd
+    elif mode=="3" and knob1!="y": 
+          subprocess.call(['python3', 'stalling_dataforwarding.py']) #pipline with dataforwd
+    elif knob1=="y":
+	      subprocess.call(['python3', 'predictor.py']) #pipeline with 1 bit predictor
+
+
+elif op=="1": #in GUI
+    subprocess.call(['python3', 'simulator_front_end.py'])
+
+