TOP_CHG
Set(c, TOP_CHG);
Set(c, TOP_CHG);
Set(c, TOP_CHG);
Set(c, TOP_CHG);
Set(c, TOP_CHG);
Set(c, TOP_CHG);
Set(c, TOP_CHG);
Set(c, TOP_CHG);
if (Status(c, TOP_CHG)) {
Clr(c, TOP_CHG);
Clr(f, TOP_CHG);
Set(f, TOP_CHG);
Set(f, TOP_CHG);
Clr(c, TOP_CHG);
Set(c, TOP_CHG);