aboutsummaryrefslogtreecommitdiffstats
path: root/tests/sat/asserts.v
diff options
context:
space:
mode:
Diffstat (limited to 'tests/sat/asserts.v')
-rw-r--r--tests/sat/asserts.v14
1 files changed, 14 insertions, 0 deletions
diff --git a/tests/sat/asserts.v b/tests/sat/asserts.v
new file mode 100644
index 000000000..c6f8095e1
--- /dev/null
+++ b/tests/sat/asserts.v
@@ -0,0 +1,14 @@
+// http://www.reddit.com/r/yosys/comments/1vljks/new_support_for_systemveriloglike_asserts/
+module test(input clk, input rst, output y);
+reg [2:0] state;
+always @(posedge clk) begin
+ if (rst || state == 3) begin
+ state <= 0;
+ end else begin
+ assert(state < 3);
+ state <= state + 1;
+ end
+end
+assign y = state[2];
+assert property (y !== 1'b1);
+endmodule