求助各位大佬，下面的代码哪里出现了错误，在vivado上仿真不通过

xiaozhubanna

ALU:
module ALU(CTRL,A,B,Q,Code);
input CTRL;
+ M% W$ v) C! Q7 l0 F. Pinput A;
input B;
output Q;
0 ~) a: d4 y- b" H, binput[2:0] Code;
if (CTLR === 0)
   Q = 0;
else
   case(Code)
     3'b000: Q = A+1;
     3'b001: Q = A+B+1;
     3'b010: Q = A;
     3'b011: Q = A+B;
# X: v, I. ?  y) C3 A8 X     3'b100: Q = A-1;
9 G, _* |4 ~, n  {+ Y1 H& a% _     3'b101: Q = A-B;
     3'b110: Q = B;
- k4 |. A: R5 q( j& }. P     default: Q = A-B-1;
9 D$ ^2 k# {( ^   endcase
endmodule
: @6 |9 R. S8 Q
7 y* F% E# ~2 M* @2 ]9 p
7 |8 H6 p, ?, s4 |testbench:
+ A  t5 C0 J( O. C- v# ?# Xmodule ALU_tb();
" s( Q3 W+ [( Ireg A,B,CTRL;
wire Q;
5 T  v. q- ]1 B" x( F8 g- H- Areg[2:0] Code;
integer case_num;
initial begin
# r0 R1 Y' C1 W& h  CTRL=0;
- l0 U  X0 d5 j& o- d  case_num = 1;
  A=1 'b0;
  B=1 'b1;
  #100;
( c+ p: U( Q  I* x% L  if(Q==0)
2 M' W8 @* M9 a, U2 u$ ]4 |  $display("[Simulation Info] Case %2d PASS.",case_num);
5 B6 [) s. |; N* g4 j6 _3 ?  else
   $display("[Simulation Info] Case %2d ERROR.",case_num);
   #100;
   CTRL=1;
   case_num = 2;
6 V1 V% R4 Z; j- }9 {1 J% y   A= 1 'b1;
   B= 1 'b0;
   Code = 3 'b000;
   #20;
5 J  x7 s- J) Z    if(Q==0)
: g  N+ B6 s, A. P0 L  $display("[Simulation Info] Case %2d PASS.",case_num);
9 F. `% {8 C% R* O  else
   $display("[Simulation Info] Case %2d ERROR.",case_num);
/ u3 Q" o# \/ A   #100;
; f! e8 m, V. K! Y   case_num = 3;
+ X) W$ d& u( K, ~; b# q0 l5 t0 z   Code = 3 'b001;
   #20;
    if(Q==0)
" e: K9 W1 ?, c. F  $display("[Simulation Info] Case %2d PASS.",case_num);
  else
   $display("[Simulation Info] Case %2d ERROR.",case_num);
: O5 c) W8 V% f; N4 y   #100;
- ?  k, Y# R% f" x: g% I    case_num = 4;
   Code = 3 'b010;
   #20;
    if(Q==1)
2 T2 v3 [4 E- c6 M7 C2 o( _  $display("[Simulation Info] Case %2d PASS.",case_num);
  X9 R. C3 c; n# ^( x: J  else
5 x7 n. W" x( d" `- `5 A8 A   $display("[Simulation Info] Case %2d ERROR.",case_num);
3 o* U0 Y! z7 j   #100;
7 V9 Q' @$ V5 K" B9 V3 q' w3 N! l    case_num = 5;
   Code = 3 'b011;
% ?7 h- b( L( N5 V   #20;
  Y1 R; z0 f; U    if(Q==1)
  $display("[Simulation Info] Case %2d PASS.",case_num);
  else
& j) Q# o/ T" `# k- y2 Y6 G# a   $display("[Simulation Info] Case %2d ERROR.",case_num);
   #100;
) x0 M/ {# |" Q    case_num = 6;
   Code = 3 'b100;
9 {: ]1 F) T# [. O) y& |0 T   #20;
6 i" q% g) k* }7 w7 A3 t$ M! G    if(Q==0)
, z7 {( ]8 g; {  $display("[Simulation Info] Case %2d PASS.",case_num);
  else
" o) O4 }  i! V- R% R# t6 L4 z   $display("[Simulation Info] Case %2d ERROR.",case_num);
   #100;
    case_num = 7;
   Code = 3 'b101;
. {; p$ a/ `2 s+ C4 t" @; `   #20;
    if(Q==1)
5 L6 c/ P5 U8 S( W9 q4 m  $display("[Simulation Info] Case %2d PASS.",case_num);
0 w/ y( D9 {* U$ W8 f0 b  else
   $display("[Simulation Info] Case %2d ERROR.",case_num);
   #100;
' Y+ s' F$ l1 g- Q* O8 e, F0 e! k4 |    case_num = 8;
! y( U0 [0 J2 f0 a9 T   Code = 3 'b110;
5 r; o) S2 Z9 ~0 W   #20;
    if(Q==0)
$ `- Y. [) L! O% K0 d. k  $display("[Simulation Info] Case %2d PASS.",case_num);
  else
   $display("[Simulation Info] Case %2d ERROR.",case_num);
' f  E" F+ S; A4 s# _% ^  ^   #100;
+ U* A) O( {! v6 t+ g/ n    case_num = 9;
   Code = 3 'b111;
   #20;
    if(Q==0)
  $display("[Simulation Info] Case %2d PASS.",case_num);
* w( D+ E6 D1 V4 p. t  else
   $display("[Simulation Info] Case %2d ERROR.",case_num);
; a6 O; A. U" S( R. q6 c   #100;
   $finish;
4 O% v5 j4 _: c9 H* ~1 H1 E end
! a6 I' F5 [6 m) Qendmodule