atpSTS
switch (ap->control & (atpEOM|atpSTS)) {
case atpSTS:
case atpEOM|atpSTS:
switch (ap->control & (atpXO|atpSTS)) {
case atpSTS:
case atpXO|atpSTS:
if (ap->control & (atpXO|atpEOM|atpSTS)) {
if (ap->control & atpSTS) {