Am finding it difficult programming SHL or ROL to work the way I want it to. I can do this prety well with AB SLC500 but am now to UnityPro (V6). My problem is that I want to shift incoming bit to the left at every clock and track the bit so as to use it at a later point. I want to shift the bits through a 16 bit register but I don't know how to do this. Infact am confused with weather to use SHL or ROR! I've read some threads here but found no solotion. If anyone could help me out it will be very much appreciated.