c871281f1e
Guard all $display/$error/$time calls with ifdef SIMULATION in: - chirp_memory_loader_param.v (initial + always block debug prints) - cic_decimator_4x_enhanced.v (5 saturation/overflow displays + monitor block) - ddc_400m.v (FIR/baseband debug monitor block) - fft_1024_inverse.v (IFFT config debug block) - matched_filter_multi_segment.v (16 state machine displays + monitor) - nco_400m_enhanced.v (initial block debug print) - radar_receiver_final.v (frame/chirp counter displays) Replace SystemVerilog constructs with Verilog-2001: - usb_data_interface.v (typedef enum -> localparam + reg) - usb_packet_analyzer.v (typedef enum -> localparam, output reg -> wire)