unsigned high_speed:1;
        unsigned ai_cmd_running:1;
        unsigned ao_cmd_running:1;
-       unsigned ao_continuous:1;
        unsigned pwm_cmd_running:1;
 
        /* number of samples to acquire */
        struct comedi_device *dev = urb->context;
        struct usbduxsigma_private *devpriv = dev->private;
        struct comedi_subdevice *s = dev->write_subdev;
+       struct comedi_cmd *cmd = &s->async->cmd;
        uint8_t *datap;
        int len;
        int ret;
                /* timer zero, transfer from comedi */
                devpriv->ao_counter = devpriv->ao_timer;
 
-               if (!devpriv->ao_continuous) {
+               if (cmd->stop_src == TRIG_COUNT) {
                        /* not continuous, fixed number of samples */
                        devpriv->ao_sample_count--;
                        if (devpriv->ao_sample_count < 0) {
                         */
                        devpriv->ao_sample_count = cmd->stop_arg;
                }
-               devpriv->ao_continuous = 0;
        } else {
                /* continuous acquisition */
-               devpriv->ao_continuous = 1;
                devpriv->ao_sample_count = 0;
        }