diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/sva/counter.sv | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/tests/sva/counter.sv b/tests/sva/counter.sv index 5e4b77e69..4f949115e 100644 --- a/tests/sva/counter.sv +++ b/tests/sva/counter.sv @@ -11,19 +11,20 @@ module top (input clk, reset, up, down, output reg [7:0] cnt); default clocking @(posedge clk); endclocking default disable iff (reset); - assert property (up |=> cnt == $past(cnt) + 8'd1); - // assert property (up [*2] |=> cnt == $past(cnt, 2) + 8'd2); - // assert property (up ##1 up |=> cnt == $past(cnt, 2) + 8'd2); + assert property (up |=> cnt == $past(cnt) + 8'd 1); + assert property (up [*2] |=> cnt == $past(cnt, 2) + 8'd 2); + assert property (up ##1 up |=> cnt == $past(cnt, 2) + 8'd 2); `ifndef FAIL assume property (down |-> !up); `endif - assert property (down |=> cnt == $past(cnt) - 8'd1); + assert property (up ##1 down |=> cnt == $past(cnt, 2)); + assert property (down |=> cnt == $past(cnt) - 8'd 1); property down_n(n); - down [*n] |=> cnt == $past(cnt, n) + n; + down [*n] |=> cnt == $past(cnt, n) - n; endproperty - // assert property (down_n(3)); - // assert property (down_n(5)); + assert property (down_n(8'd 3)); + assert property (down_n(8'd 5)); endmodule |