top.v

module top
(
	input [7:0] data_a, data_b,
	input [6:1] addr_a, addr_b,
	input we_a, we_b, re_a, re_b, clk,
	output reg [7:0] q_a, q_b
);
	// Declare the RAM variable
	reg [7:0] ram[63:0];

	// Port A
	always @ (posedge clk)
	begin
`ifndef BUG
		if (we_a)
		begin
			ram[addr_a] <= data_a;
			q_a <= data_a;
		end
		if (re_b)
		begin
			q_a <= ram[addr_a];
		end
`else
		if (we_a)
		begin
			ram[addr_a] <= 8'bXXXXXXXX;
			q_a <= 8'bXXXXXXXX;
		end
		if (re_b)
		begin
			q_a <= ram[addr_a];
		end
`endif
	end

	// Port B
	always @ (posedge clk)
	begin
`ifndef BUG
		if (we_b)
		begin
			ram[addr_b] <= data_b;
			q_b <= data_b;
		end
		if (re_b)
		begin
			q_b <= ram[addr_b];
		end
`else
		if (we_b)
		begin
			ram[addr_b] <= 8'bXXXXXXXX;
			q_b <= 8'bXXXXXXXX;
		end
		if (re_b)
		begin
			q_b <= ram[addr_b];
		end
`endif
	end

endmodule