REM PUTS A BLINKING A ON THE SCREEN
REM DOES NOT GO AWAY WITH CLS
10 S=48928
20 POKES+1,65
30 POKES+2,0
40 POKES+3,7*16+8+1
50 POKES+6,10
60 POKES+7,3
70 POKES+8,1
