十进制数546转换成8421BCD码为

以下是将十进制数546转换成8421BCD码的Verilog代码：

module bcd_converter(
    input [7:0] decimal,
    output reg [15:0] bcd
);

always @(*) begin
    case(decimal)
        0: bcd = 16'h0000;
        1: bcd = 16'h0001;
        2: bcd = 16'h0002;
        3: bcd = 16'h0003;
        4: bcd = 16'h0004;
        5: bcd = 16'h0005;
        6: bcd = 16'h0006;
        7: bcd = 16'h0007;
        8: bcd = 16'h0008;
        9: bcd = 16'h0009;
        default: bcd = 16'h0000;
    endcase
    
    case(bcd)
        16'h0000: bcd = 16'h0000;
        16'h0001: bcd = 16'h0001;
        16'h0002: bcd = 16'h0010;
        16'h0003: bcd = 16'h0011;
        16'h0004: bcd = 16'h0100;
        16'h0005: bcd = 16'h0101;
        16'h0006: bcd = 16'h0110;
        16'h0007: bcd = 16'h0111;
        16'h0008: bcd = 16'h1000;
        16'h0009: bcd = 16'h1001;
        default: bcd = 16'h0000;
    endcase
end

endmodule

使用上述代码，将十进制数546转换成8421BCD码的方法如下：

bcd_converter bcd_inst(.decimal(546), .bcd(bcd_out));

其中，`bcd_out`是一个16位的输出端口，它将存储转换后的8421BCD码。