Controllable Circuits

The controllable circuit is designed so that the connection lines in between of the two adders are made controllable by wiring out them to nine input pins: C_inx, C (c₀ - c₇), D (d₀ - d₇). An additinal input pin Sel is added to select between the normal circuit operation mode and the test mode. You will find the circuit under the name controllable.agm.