{TAIL ~ A frame memory} 600, {HEAD ~ a CRT} 700, a display drive controller 910 and a bus controller 1010 have the same structures as those in the fourth embodiment 
{ TAIL ~ A frame memory } 600 , { HEAD ~ a CRT } 700 , a display drive controller 910 and a bus controller 1010 have the same structures as those in the fourth embodiment
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH