5 rem color bars program
10 print chr$(147);:dim co(17):c=1
20 read co(c):if co(c)>0 then c=c+1:goto 20
25 sp$="     ":h=22:c=c-1:rem sp$=5 spaces
30 for r=1 to c step int(c/2)
40 for h=1 to 10
50 for b=r to (r+int(c/2))-1
60 print chr$(18);chr$(co(b));sp$;
70 next b
75 rem check if palette is only 8 (vic-20).
76 rem if so, we need to fill the last two spaces.
80 if c<=8 then print "  ";
90 next h:next r
100 get k$:if k$="" then 100
110 end
280 rem because the control codes for color are non-sequential,
285 rem we put them into a sequential array for use
300 data 144,5,28,159,156,30,31,158
305 rem omit or rem the next line for vic-20
310 data 129,149,150,151,152,153,154,155
320 data 0:rem data terminato