The input logic circuit in diagrammatic representation has three inputs, I0, I1, and T, and three outputs, S0, S1 and L. variables S0 and S1 select one of the source addresses for CAR. Variable L enables the load input in SBR. The binary values of the two selection variables determine the path in the multiplexer. For example, with S1 S0 = 10, multiplexer input number 2 is selected and establishes a transfer. The truth table is shown below:
Comments
Leave a comment