Fsm3comb

原创于 2023-08-03 23:30:09 发布 · 236 阅读

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这篇文章描述了一个具有一个输入、一个输出和四个状态的Moore状态机。它给出了状态转换逻辑和输出逻辑的实现，基于给定的状态和输入计算下一个状态并确定输出值。

The following is the state transition table for a Moore state machine with one input, one output, and four states. Use the following state encoding: A=2'b00, B=2'b01, C=2'b10, D=2'b11.

Implement only the state transition logic and output logic (the combinational logic portion) for this state machine. Given the current state (), compute the and output () based on the state transition table. statenext_stateout

module top_module(
    input in,
    input [1:0] state,
    output [1:0] next_state,
    output out); //

    parameter A=0, B=1, C=2, D=3;

    // State transition logic: next_state = f(state, in)
    always@ (*) begin
        case (state)
            A: if(in == 1)
                next_state <= B;
            	else 
                next_state <= A;
            B:if(in == 1)
                next_state <= B;
            	else 
                    next_state <= C;
       		C:if(in == 1)
                next_state <= D;
            	else 
                    next_state <= A;
            D:if(in == 1)
                next_state <= B;
            	else 
                    next_state <= C;
            default: next_state <= A;
        endcase
    end
        assign out = state == D ? 1'b1 : 1'b0;
    // Output logic:  out = f(state) for a Moore state machine

endmodule