The wait statement will not block execution if its condition is true. If the condition is not true, it will wait until it becomes true.
Example:
module wait_example;
reg [7:0] a;
reg b;
initial begin
wait (a==3)
$display("not waiting for a==3 time %0d", $time);
wait(b)
$display("not waiting for b time %0d", $time);
wait (a==4)
$display("not waiting for a==4 time %0d", $time);
end
initial begin
#3 a = 3;
$display("value of a is now %0d at time %0d", a,$time);
#1 a = 4;
$display("value of a is now %0d at time %0d",a,$time);
#1 b = 1;
$display("value of b is now %0d at time %0d",b,$time);
end
endmodule |
