// rgData: input, raw digital data array
// rgValue: output, decoded data array
// rgFlag: output, decoded flag array

var c = rgData.length
var pDAV = 1

for(var i = 0; i < c; i++){             // for each sample
  var s = rgData[i];                    // capture pins
  var ATN = 1&(s>>15);                  // ATN on pin 15
  var DAV = 1&(s>>10);                  // DAV on pin 10 

  if (DAV == 0 && pDAV == 1){           // If new data valid
    var data = 255 - rgData[i] & 0xFF;  // capture data byte
    var flag = ATN + 1;                 // capture ATN level
    }
  else{                                 // otherwise
    rgValue[i] = data;                  // display captured data
    rgFlag[i] = flag;                   //  or command
    }                                  
  pDAV = DAV;
}
// the else statement is required in case of repeated bytes