nextpnr/ice40/carry_tests/counter.v
David Shah 21d5a04501 Carry chains now routable
Signed-off-by: David Shah <davey1576@gmail.com>
2018-06-26 15:55:50 +02:00

10 lines
214 B
Verilog

module top(input clk, cen, rst, ina, inb, output outa, outb, outc, outd);
reg [15:0] ctr = 0;
always @(posedge clk)
ctr <= ctr + 1'b1;
assign {outa, outb, outc, outd} = ctr[15:12];
endmodule