| // DESCRIPTION: Verilator: Verilog Test module |
| // |
| // This file ONLY is placed into the Public Domain, for any use, |
| // without warranty, 2005 by Wilson Snyder. |
| |
| module t (/*AUTOARG*/ |
| // Inputs |
| clk |
| ); |
| |
| input clk; |
| integer cyc; initial cyc=1; |
| parameter ONE = 1; |
| |
| wire [17:10] bitout; |
| reg [7:0] allbits; |
| reg [15:0] onebit; |
| |
| sub sub [7:0] (allbits, onebit, bitout); |
| |
| integer x; |
| |
| always @ (posedge clk) begin |
| //$write("%x\n", bitout); |
| if (cyc!=0) begin |
| cyc <= cyc + 1; |
| if (cyc==1) begin |
| allbits <= 8'hac; |
| onebit <= 16'hc01a; |
| end |
| if (cyc==2) begin |
| if (bitout !== 8'h07) $stop; |
| allbits <= 8'hca; |
| onebit <= 16'h1f01; |
| end |
| if (cyc==3) begin |
| if (bitout !== 8'h41) $stop; |
| if (sub[0].bitout !== 1'b1) $stop; |
| if (sub[1].bitout !== 1'b0) $stop; |
| `ifndef verilator // Hacky array subscripting |
| if (sub[ONE].bitout !== 1'b0) $stop; |
| `endif |
| $write("*-* All Finished *-*\n"); |
| $finish; |
| end |
| end |
| end |
| endmodule |
| |
| `ifdef USE_INLINE |
| `define INLINE_MODULE /*verilator inline_module*/ |
| `else |
| `define INLINE_MODULE /*verilator public_module*/ |
| `endif |
| |
| module sub (input [7:0] allbits, input [1:0] onebit, output bitout); |
| `INLINE_MODULE |
| assign bitout = (^ onebit) ^ (^ allbits); |
| endmodule |