void LoadLevelCombobox()
{
//init combobox
levelComboBox.SelectedItem = null;
levelComboBox.Items.Clear();
//convert course id => course no using data in ROM
rom.SetBank(0);
List<ComboboxItem> items = new List<ComboboxItem>();
for(int i = 0 ; i <= 0x2A ; i++)
{
int levelpointer = rom.ReadWord(0x0534 + i * 2);
int courseNo = (levelpointer - 0x0587) / 3;
ComboboxItem item = new ComboboxItem(string.Format("Course {0:D2}", courseNo), i);
items.Add(item);
}
items = items.OrderBy(x => x.Text).ToList();
string oldItem = null;
foreach(var item in items)
{
if(oldItem != null && item.Text == oldItem)
{
item.Text += " (revisited)";
}
oldItem = item.Text;
}
levelComboBox.Items.AddRange(items.ToArray());
}