I am laying out a small microcontroller PCB and I have just about finished. BUT! for some reason PADS has stopped allowing me to route items on layer 3 and 4. I can route to layers 1 and 2. I dont believe I changed anything by modless comand.
All of the layers are vissible but when I try to F2 "route" all it allows me to do is route in the other layers.I cannot complete the trace in the component layer. Have I locked the layers or something?
The layers were all routing perfectly so what could have changed?