I am in need of some help. I was fixing a few extra coco boards I had and was trying to make copies of the ecb chip but Im not able to copy the ecb of the color basic 1.0 or 1.2 chip my programmer seems to be able to read them as 27XXX chips but when I burn them to EPROM all I get is garbage. can anyone help me out as to tell me what im doing wrong ?