Would anyone have a service manual for the Hazeltine 1410 terminal ? I have a peculiar problem where several keys output a different character. I found there's a pattern to this chaos. From looking at the ascii data, bits 5 and 6 become swapped only for characters between 40h and 5Fh. instead of an 'A' it displays a '!" and it continues like this. I'm afraid the i8243 chip might be bad but I'm not completely sure. I found the i8243 datasheet and currently trying to trace the connections. I hear this chip is hard to come by. I only found one supplier so far which I'm waiting to hear back on the rfq. thanks =Dan -- [ Pittsburgh 250th --- http://www2.applegate.org/~ragooman/ ]