module clkgen #(
PERIOD_NS = 10,
RESET_DELAY_NS = 100
) (
output logic clk_o,
output logic nreset_o
);
initial begin
clk_o <= 1'b1;
nreset_o <= 1'b0;
#RESET_DELAY_NS nreset_o <= 1'b1;
end
always
#(PERIOD_NS/2) clk_o <= ~clk_o;
endmodule