看看下面的程序哪里的语法错误

[jk_101]

module divison(clk,rst_n,start);

input clk,rst_n,start;
input [7:0] dividend; //被除数
input [7:0] divisor; //除数
output done;
output [7:0] qutient;
output [7:0] reminder;
output [15:0] sq_diff;
output [15:0] sq_temp;


reg [3:0] i;
reg [8:0] s;
reg [15:0] temp;
reg [15:0] diff;
reg isneg;
reg isdone;

always @(posedge clk or negedge rst_n)
begin
if (!rst_n)
begin
i <= 4'd0;
s <= 9'd0;
temp <= 16'd0;
diff <= 16'd0;
isneg <= 1'b0;
isdone <=1'b0;
end

else if(start)
case(i)
0:
begin
isneg <= dividend[7]^divisor[7];
s <= divisor[7] ? {1'b1, divisor}:{1'b1,~divisor+1b'1};
temp <= dividend[7] ? {8'd0,~dividend+1'b1}:{8'd0,dividend};
diff <= 16'd0;
i <= i + 1'b1;
end
1,2,3,4,5,6,7,8:
begin
diff = temp + {s,7'd0};
if(diff[15])
temp <= {temp[14:0],1'b0};
else
begin
temp <={diff[14:0],1'b1};
i <= i +1'b1;
end
end
9:
begin
isdone <= 1'b1;
i <= i +1'b1;
end
10:
begin
isdone <=1'b0;
i <= 2'b0;
end
endcase

assign done = isdone;
assign qutient = isneg ? (~temp[7:0]+1'b1):temp[7:0]; //商
assign reminder = temp[15:8]; //余数
assign sq_diff = diff;
assign sq_temp = temp;
end
endmodule

编译之后出现这样的错误：
Error (10170): Verilog HDL syntax error at divison.v(9) near text Â
Error (10170): Verilog HDL syntax error at divison.v(9) near text "Â"; expecting "endmodule"
Error (10170): Verilog HDL syntax error at divison.v(10) near text Â
Error (10170): Verilog HDL syntax error at divison.v(11) near text Â
Error (10170): Verilog HDL syntax error at divison.v(21) near text Â
Error (10170): Verilog HDL syntax error at divison.v(21) near text "Â"; expecting "@", or an identifier
Error (10170): Verilog HDL syntax error at divison.v(22) near text Â
Error (10170): Verilog HDL syntax error at divison.v(23) near text Â
Error (10170): Verilog HDL syntax error at divison.v(24) near text Â
Error (10170): Verilog HDL syntax error at divison.v(25) near text Â
Error (10170): Verilog HDL syntax error at divison.v(26) near text Â
Error (10170): Verilog HDL syntax error at divison.v(27) near text Â
Error (10170): Verilog HDL syntax error at divison.v(28) near text Â
Error (10170): Verilog HDL syntax error at divison.v(29) near text Â
Error (10170): Verilog HDL syntax error at divison.v(38) near text Â
Error (10170): Verilog HDL syntax error at divison.v(39) near text Â
Error (10170): Verilog HDL syntax error at divison.v(40) near text Â
Error (10170): Verilog HDL syntax error at divison.v(41) near text Â
Error (10170): Verilog HDL syntax error at divison.v(42) near text Â
Info (12021): Found 0 design units, including 0 entities, in source file divison.v

不知道怎么办。谢谢