time_sim.v

实用的程序代码

// Xilinx Verilog produced by program ngd2ver, Version M1.4.12
// Date: Tue Jan  6 19:28:32 1998
// Design file: time_sim.nga
// Device: 4005epc84-2
`timescale 1 ns/1 ps
`uselib dir=/home/zeppelin2/tech_apps/m1_4.12/verilog/data libext=.vmd

  module if_ex (A, B, C, D, MUX_OUT, SEL);
    input A;
    input B;
    input C;
    input D;
    output MUX_OUT;
    input [1:0] SEL;

    wire n50, n51, n52, n53, n54, n55, n88, n86, n87, n80, n82, n81, n83, n84, 
    n85, \U46/$1I20_GTS_TRI , \U51/2_0 , \U55/2_0 , U49_2_INV, U53_2_INV, 
    U54_2_INV, \U55/n86_2_INV , \U46/$1I20_GTS_TRI_2_INV ;
    `ifdef GTS_SIGNAL
      wire GTS = `GTS_SIGNAL ;
    `else
      wire GTS ;
    `endif
    initial $sdf_annotate("time_sim.sdf");

    X_BUF U40 (.IN (A), .OUT (n50));
    X_BUF U41 (.IN (B), .OUT (n51));
    X_BUF U42 (.IN (C), .OUT (n52));
    X_BUF U43 (.IN (D), .OUT (n53));
    X_BUF U44 (.IN (SEL[1]), .OUT (n54));
    X_BUF U45 (.IN (SEL[0]), .OUT (n55));
    X_OR2 U47 (.IN0 (n86), .IN1 (n87), .OUT (n88));
    X_INV U48 (.IN (n53), .OUT (n80));
    X_AND2 U49 (.IN0 (n55), .IN1 (n80), .OUT (U49_2_INV));
    X_OR2 U50 (.IN0 (n52), .IN1 (n55), .OUT (n81));
    X_INV U52 (.IN (n55), .OUT (n83));
    X_OR2 U53 (.IN0 (n83), .IN1 (n51), .OUT (U53_2_INV));
    X_OR2 U54 (.IN0 (n50), .IN1 (n55), .OUT (U54_2_INV));
    X_IPAD A_PAD (.PAD (A));
    X_IPAD B_PAD (.PAD (B));
    X_IPAD C_PAD (.PAD (C));
    X_IPAD D_PAD (.PAD (D));
    X_IPAD \SEL<1>_PAD  (.PAD (SEL[1]));
    X_IPAD \SEL<0>_PAD  (.PAD (SEL[0]));
    X_OPAD MUX_OUT_PAD (.PAD (MUX_OUT));
    X_BUF \U46/$1I20  (.IN (n88), .OUT (\U46/$1I20_GTS_TRI ));
    X_TRI \U46/$1I20_GTS_TRI_32  (.IN (\U46/$1I20_GTS_TRI ), .OUT (MUX_OUT), 
    .CTL (\U46/$1I20_GTS_TRI_2_INV ));
    X_AND2 \U51/n87/2_0  (.IN0 (n82), .IN1 (n81), .OUT (\U51/2_0 ));
    X_AND2 \U51/n87  (.IN0 (\U51/2_0 ), .IN1 (n54), .OUT (n87));
    X_OR2 \U55/n86/2_0  (.IN0 (n54), .IN1 (n85), .OUT (\U55/2_0 ));
    X_OR2 \U55/n86  (.IN0 (\U55/2_0 ), .IN1 (n84), .OUT (\U55/n86_2_INV ));
    X_INV U49_2_INV_33 (.IN (U49_2_INV), .OUT (n82));
    X_INV U53_2_INV_34 (.IN (U53_2_INV), .OUT (n84));
    X_INV U54_2_INV_35 (.IN (U54_2_INV), .OUT (n85));
    X_INV \U55/n86_2_INV_36  (.IN (\U55/n86_2_INV ), .OUT (n86));
    X_INV \U46/$1I20_GTS_TRI_2_INV_37  (.IN (GTS), .OUT 
    (\U46/$1I20_GTS_TRI_2_INV ));
    X_PD NGD2VER_PD_30 (.OUT (GTS) );
  endmodule