| module example; |
| reg r, c, e; |
| reg [4:0] a, b; |
| wire d; |
| |
| assign d = ( r | ( a == b ) ) ? 1'b0 : 1'b1; |
| |
| // Change inputs at time n*100 |
| |
| initial begin |
| #100 r = 1'bx; a = 5'bxxxxx; b = 5'bxxxxx; |
| #100 r = 1'b1; a = 5'bxxxxx; b = 5'bxxxxx; |
| #100 r = 1'b1; a = 5'b00000; b = 5'b00000; |
| #100 r = 1'b0; a = 5'b00000; b = 5'b00000; |
| #100 $finish; |
| end |
| |
| // Store c and e at time n*100 + 25. |
| // Note that the value assigned to c is exactly the same as |
| // the continuous assignment RHS for d (assigned to e). |
| |
| initial #25 forever begin |
| #100 |
| c = ( r | ( a == b ) ) ? 1'b0 : 1'b1; |
| e = d; |
| end |
| |
| // Display all values at time n*100 + 50 |
| |
| initial #50 forever begin |
| #100 |
| $display( "%b,%b,%b = ( %b | ( %b == %b ) ) ? 0 : 1", |
| c, d, e, r, a, b ); |
| end |
| |
| endmodule |
