retaining of value of an integer in Verilog

[anne rachel]

Hello all,


I am unable to retain the value of the integer "result " . As soon as the first "always" block ends, the value of result is 0 as initialised but after the execution of the second "always" block, the correct value of "result" is being displayed. Can anyone help me in retaining the value of the integer "result" after execution of first "always" block ?
The following is my code for BCD to binary conversion of 136 bit in Verilog.


module one36bit_bcd_bin(bcd,bin);
input [135:0] bcd;
output reg [135:0]bin;
integer result=0;
//reg [15:0]resreg;
integer i=0;
always @ (bcd)
begin
result=(bcd[3:0]);
result=result+(bcd[7:4])*8'd10;
result=result+(bcd[11:8])*12'd100;
result=result+(bcd[15:12])*16'd1000;
result=result+(bcd[19:16])*20'd10000;
result=result+(bcd[23:20])*24'd100000;
result=result+(bcd[27:24])*28'd1000000;
result=result+(bcd[31:28])*32'd10000000;
result=result+(bcd[35:32])*36'd100000000;
result=result+(bcd[39:36])*40'd1000000000;
result=result+(bcd[43:40])*44'd10000000000;
result=result+(bcd[47:44])*48'd100000000000;
result=result+(bcd[51:48])*52'd1000000000000;
result=result+(bcd[55:52])*56'd10000000000000;
result=result+(bcd[59:56])*60'd100000000000000;
result=result+(bcd[63:60])*64'd1000000000000000;
result=result+(bcd[67:64])*68'd10000000000000000;
result=result+(bcd[71:68])*72'd100000000000000000;
result=result+(bcd[75:72])*76'd1000000000000000000;
result=result+(bcd[79:76])*80'd10000000000000000000;
result=result+(bcd[83:80])*84'd100000000000000000000;
result=result+(bcd[87:84])*88'd1000000000000000000000;
result=result+(bcd[91:88])*92'd10000000000000000000000;
result=result+(bcd[95:92])*96'd100000000000000000000000;
result=result+(bcd[99:96])*100'd1000000000000000000000000;
result=result+(bcd[103:100])*104'd10000000000000000000000000;
result=result+(bcd[107:104])*108'd100000000000000000000000000;
result=result+(bcd[111:108])*112'd1000000000000000000000000000;
result=result+(bcd[115:112])*116'd10000000000000000000000000000;
result=result+(bcd[119:116])*120'd100000000000000000000000000000;
result=result+(bcd[123:120])*124'd1000000000000000000000000000000;
result=result+(bcd[127:124])* 128'd10000000000000000000000000000000;

result=result+(bcd[131:128])*132'd100000000000000000000000000000000;
result=result+(bcd[135:132])*136'd1000000000000000000000000000000000;
$display("result =%d",result);
end
always @(bcd)
//initial
begin
$display("result =%d",result);
while(result>0)
begin
bin=result%2;
result=result/2;
i=i+1;
end
if(i<135)
begin
while(i<=135)
begin
bin=0;
i=i+1;
end
end
end
endmodule



Thanks in advance!