Created
May 4, 2016 16:51
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数码管
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reg [7:0] an; | |
always @(posedge CLK100MHZ) begin | |
if (reset) begin | |
an <= 8'b1111_1110; | |
end | |
else begin | |
an <= { an[6:0], an[7] }; | |
end | |
end | |
reg [2:0] idx; | |
always @(an) begin | |
case (an) | |
8'b11111110: idx = 0; | |
8'b11111101: idx = 1; | |
8'b11111011: idx = 2; | |
8'b11110111: idx = 3; | |
8'b11101111: idx = 4; | |
8'b11011111: idx = 5; | |
8'b10111111: idx = 6; | |
8'b01111111: idx = 7; | |
default: idx = 0; | |
endcase | |
end | |
wire [4:0] Byte = data[idx+:4]; | |
reg [6:0] seg; | |
always @(Byte) | |
case (Byte) | |
4'h0: seg = 7'b1000000; | |
4'h1: seg = 7'b1111001; | |
4'h2: seg = 7'b0100100; | |
4'h3: seg = 7'b0110000; | |
4'h4: seg = 7'b0011001; | |
4'h5: seg = 7'b0010010; | |
4'h6: seg = 7'b0000010; | |
4'h7: seg = 7'b1111000; | |
4'h8: seg = 7'b0000000; | |
4'h9: seg = 7'b0011000; | |
4'hA: seg = 7'b0001000; | |
4'hB: seg = 7'b0000011; | |
4'hC: seg = 7'b1000110; | |
4'hD: seg = 7'b0100001; | |
4'hE: seg = 7'b0000110; | |
4'hF: seg = 7'b0001110; | |
default: seg = 7'b1001001; | |
endcase | |
end |
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