57 lines
1.1 KiB
Coq
57 lines
1.1 KiB
Coq
|
module jyh_4490_3_encoder(codeout,indec,indec2,clk,seg);
|
||
|
|
input[3:0] indec,indec2;
|
||
|
|
input clk;
|
||
|
|
output reg [1:0] seg=2'b01;
|
||
|
|
output reg [6:0] codeout;
|
||
|
|
|
||
|
|
reg n = 1;
|
||
|
|
|
||
|
|
always @ (posedge clk)
|
||
|
|
begin
|
||
|
|
if(n==1)
|
||
|
|
begin
|
||
|
|
n<=2;
|
||
|
|
if(seg==2'b01)
|
||
|
|
begin
|
||
|
|
case (indec)
|
||
|
|
4'd0: codeout<=7'b1111110;
|
||
|
|
4'd1: codeout<=7'b0110000;
|
||
|
|
4'd2: codeout<=7'b1101101;
|
||
|
|
4'd3: codeout<=7'b1111001;
|
||
|
|
4'd4: codeout<=7'b0110011;
|
||
|
|
4'd5: codeout<=7'b1011011;
|
||
|
|
4'd6: codeout<=7'b1011111;
|
||
|
|
4'd7: codeout<=7'b1110000;
|
||
|
|
4'd8: codeout<=7'b1111111;
|
||
|
|
4'd9: codeout<=7'b1111011;
|
||
|
|
default: codeout<=7'bx;
|
||
|
|
endcase
|
||
|
|
end
|
||
|
|
if(seg==2'b10)
|
||
|
|
begin
|
||
|
|
case (indec2)
|
||
|
|
4'd0: codeout<=7'b1111110;
|
||
|
|
4'd1: codeout<=7'b0110000;
|
||
|
|
4'd2: codeout<=7'b1101101;
|
||
|
|
4'd3: codeout<=7'b1111001;
|
||
|
|
4'd4: codeout<=7'b0110011;
|
||
|
|
4'd5: codeout<=7'b1011011;
|
||
|
|
4'd6: codeout<=7'b1011111;
|
||
|
|
4'd7: codeout<=7'b1110000;
|
||
|
|
4'd8: codeout<=7'b1111111;
|
||
|
|
4'd9: codeout<=7'b1111011;
|
||
|
|
default: codeout<=7'bx;
|
||
|
|
endcase
|
||
|
|
end
|
||
|
|
end
|
||
|
|
if(n==2)
|
||
|
|
begin
|
||
|
|
n<=1;
|
||
|
|
codeout<=7'b0;
|
||
|
|
if(seg==2'b10)
|
||
|
|
seg<=2'b01;
|
||
|
|
else if(seg==2'b10)
|
||
|
|
seg<=2'b01;
|
||
|
|
end
|
||
|
|
end
|
||
|
|
endmodule
|