%
% remove serial form, complete the Back vector, this is test mode
%
_Mach.Listen _DevFlags _Setup.Listen and zero and
{
 *machserb
}
{
 _SerialA.Enabled
 {
%
% the serial port was not closed, prevent exiting
%
  @SerialA
  show
 }
 {
%
% no serial A port open
%
  _SerialA.Formed !Scope.ExitA
  *serlexia
  true !Msys.TelmSave
  *taskbacx
 } ifelse
} ifelse