30 lines
589 B
Coq
30 lines
589 B
Coq
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/*
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Decoder / Encoder
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*/
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module decoder_3bit (
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input [2:0] in,
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output [7:0] out
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);
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assign out = 1 << in;
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endmodule
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module encoder_3bit(
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input [7:0] in,
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output reg [2:0] out
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);
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always @(*) begin
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out = 0;
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casez(in)
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8'b1???????: out = 3'd7;
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8'b01??????: out = 3'd6;
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8'b001?????: out = 3'd5;
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8'b0001????: out = 3'd4;
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8'b00001???: out = 3'd3;
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8'b000001??: out = 3'd2;
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8'b0000001?: out = 3'd1;
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8'b00000001: out = 3'd0;
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endcase
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end
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endmodule
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