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https://github.com/steveicarus/iverilog.git
synced 2026-08-29 01:03:29 +02:00
Stephen Williams
cea237b407
By adding ivtest to the iverilog source tree, it is easier to keep the regression test synchronized with the source that is being tested. This should be especially helpful for PRs that add a new feature, and have a matching ivtest PR with the regression test for that feature.
40 lines
753 B
Verilog
40 lines
753 B
Verilog
`timescale 1ns/10ps
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module top;
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reg a, pass;
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wire z;
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time edge_time;
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always @(z) begin
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if ((z === 0) && (($time - edge_time) != 2)) begin
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$display("Falling took %d, expected 2", $time - edge_time);
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pass = 1'b0;
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end
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if ((z === 1) && (($time - edge_time) != 1)) begin
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$display("Rising took %d, expected 1", $time - edge_time);
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pass = 1'b0;
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end
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end
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initial begin
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pass = 1'b1;
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$sdf_annotate("ivltests/sdf_del.sdf", top);
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#10;
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edge_time = $time;
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a = 1'b0;
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#10;
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edge_time = $time;
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a = 1'b1;
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#10 if (pass) $display("PASSED");
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end
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my_buf dut(z, a);
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endmodule
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module my_buf (output z, input a);
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buf (z, a);
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specify
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(a => z) = (0, 0);
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endspecify
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endmodule
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