An internal signal or {HEAD ~ signals} are written to {TAIL ~ a serially connected memory} in the dedicated diagnostic data port 
are written to
An internal signal or { HEAD ~ signals } are written to { TAIL ~ a serially connected memory } in the dedicated diagnostic data port
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH