Hi Guys
Just bought a couple of 130xe and 65xe pal versions, reading up on faulty gtia chips,as there is no serial number sticker underneath how can I test it to see if they are faulty.
I have found a basic prog which I tried and found that I get black lines in the pic, is this write
10 GR. 9:D=1:FOR X=0 TO 79
20 COLOR C:C=C+D:IF C=15 OR C=0 THEN D=-D
30 PLOT X,0:DR. X,191
40 NEXT X
50 G. 50
many thanks