Yeah, I noticed that; there were no jumpers shown for the device code. I can only assume that they are similar to the device code jumpers for the M1703. If so, that would be 24 jumpers right there. (It's '24' because the M1705 includes two completely separate devices, which can apparently be given device codes independently.) If so, that would be all of them - the block diagram shows 8; 24 for device codes; total 32. Odd the way they use separate jumpers for 1 and 0; why not one jumper with a pull-up/down? Noel