private bool MapContainsNegativeValues(byte[] allBytes, SymbolHelper sh)
{
for (int i = 0; i < sh.Length; i += 2)
{
int currval = Convert.ToInt32(allBytes[sh.Flash_start_address + i + 1]) * 256 + Convert.ToInt32(allBytes[sh.Flash_start_address + i]);
if (currval > 0xF000) return true;
}
return false;
}