module delete_a(clk,data_in_a,data_in_b,data_in_c,delete_en_a,del_address,multi_out);
input clk;//時鐘
input data_in_a;//與Ram0輸出相連接
input data_in_b;//與Ram3輸出相連接
input data_in_c;//與Ram4輸出相連接
input delete_en_a;//刪除模塊使能
output[11:0] del_address;//輸出地址線
output multi_out;//輸出

integer i=0;
reg multi_out;
reg [11:0] del_address;
reg[1:0] count=0;

always@(posedge clk)

begin
i=i+1;

if((i<3569)&&(delete_en_a))

begin
case (count)

2'b00: multi_out=data_in_a;
2'b01: multi_out=data_in_b;
2'b10: multi_out=data_in_a;
2'b11: multi_out=data_in_c;

endcase
if (count<3) 
begin
count=count+2'b01;
end
else 
begin
count=0;
end
del_address=del_address+1'b1;
end

if(i>3568)
begin
i=0;
multi_out=0;
del_address=0;
end
end

endmodule