fifo_1kx16 fifo_1kx16_inst ( .aclr ( aclr_sig ), .clock ( clock_sig ), .data ( data_sig ), .rdreq ( rdreq_sig ), .wrreq ( wrreq_sig ), .almost_empty ( almost_empty_sig ), .empty ( empty_sig ), .full ( full_sig ), .q ( q_sig ), .usedw ( usedw_sig ) );