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