10 SCREEN 1:WIDTH 32:KEY OFF:COLOR 15,0,0:X=6144+33 20 FOR I=0 TO 15 30 LOCATE I*2+1,0:PRINT HEX$(I) 40 LOCATE 0,I+1:PRINT HEX$(I) 50 NEXT I 60 FOR I=0 TO 255 70 VPOKE X,I 80 X=X+2 90 NEXT I