fix up fame test to work only with c backend and remove println from lfsr

Author: jackbackrack

examples/examples.scala

@@ -44,8 +44,9 @@ object TutorialExamples {
         chiselMainTest(tutArgs, () => Module(new Adder(8))){
           c => new AdderTests(c)}
       case "Fame" =>
-        chiselMainTest(tutArgs.slice(0, tutArgs.length - 1) ++ Array("Chisel.Fame1CppBackend", "--debug", "--vcd", "--ioDebug"), () => Module(new FameTransform())){
-          c => new FameTests(c)}
+        if (tutArgs.contains("c"))
+          chiselMainTest(tutArgs.slice(0, tutArgs.length - 1) ++ Array("Chisel.Fame1CppBackend", "--debug", "--vcd", "--ioDebug"), () => Module(new FameTransform())){
+            c => new FameTests(c)}
       case "Adder4" =>
         chiselMainTest(tutArgs, () => Module(new Adder4())){
           c => new Adder4Tests(c)}

solutions/LFSR16.scala

@@ -8,11 +8,9 @@ class LFSR16 extends Module {
     val out = UInt(OUTPUT, 16)
   }
   val res = Reg(init = UInt(1, 16))
-  printf("INC %d", io.inc)
   when (io.inc) { 
     val nxt_res = Cat(res(0)^res(2)^res(3)^res(5), res(15,1)) 
     res := nxt_res
-    printf(" NXT %d\n", nxt_res)
   }
   io.out := res
 }