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Diffstat (limited to 'icefuzz/tests/example_icestick.v')
-rw-r--r-- | icefuzz/tests/example_icestick.v | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/icefuzz/tests/example_icestick.v b/icefuzz/tests/example_icestick.v new file mode 100644 index 0000000..4635550 --- /dev/null +++ b/icefuzz/tests/example_icestick.v @@ -0,0 +1,29 @@ +module top ( + input clk, + output LED1, + output LED2, + output LED3, + output LED4, + output LED5 +); + + localparam BITS = 5; + localparam LOG2DELAY = 22; + + function [BITS-1:0] bin2gray(input [BITS-1:0] in); + integer i; + reg [BITS:0] temp; + begin + temp = in; + for (i=0; i<BITS; i=i+1) + bin2gray[i] = ^temp[i +: 2]; + end + endfunction + + reg [BITS+LOG2DELAY-1:0] counter = 0; + + always@(posedge clk) + counter <= counter + 1; + + assign {LED1, LED2, LED3, LED4, LED5} = bin2gray(counter >> LOG2DELAY); +endmodule |