fix download bitstream and add json convert for jtag status reg

server/src/Common.cs

@@ -158,7 +158,7 @@ namespace Common
                 return new(new ArgumentException(
                     "Location can't be negetive", nameof(location)));
 
-            return (srcBits & (1 << location)) == 1;
+            return ((srcBits >> location) & ((UInt32)0b1)) == 1;
         }