private void textBoxRegisterPC_TextChanged(object sender, EventArgs e)
{
if ((sender as TextBox).Text.Length != 0)
CPU.PC = ushort.Parse((sender as TextBox).Text, NumberStyles.HexNumber);
if (!(disassemblyDisplay1.SelectedAddress < CPU.PC && disassemblyDisplay1.EndAddress > CPU.PC) && disassemblyDisplay1.EnableUpdates)
disassemblyDisplay1.SelectedAddress = CPU.PC;
rawMemoryDisplay.Invalidate();
disassemblyDisplay1.Invalidate();
}