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author | Clifford Wolf <clifford@clifford.at> | 2013-01-05 11:13:26 +0100 |
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committer | Clifford Wolf <clifford@clifford.at> | 2013-01-05 11:13:26 +0100 |
commit | 7764d0ba1dcf064ae487ee985c43083a0909e7f4 (patch) | |
tree | 18c05b8729df381af71b707748ce1d605e0df764 /tests/simple/task_func.v | |
download | yosys-7764d0ba1dcf064ae487ee985c43083a0909e7f4.tar.gz yosys-7764d0ba1dcf064ae487ee985c43083a0909e7f4.tar.bz2 yosys-7764d0ba1dcf064ae487ee985c43083a0909e7f4.zip |
initial import
Diffstat (limited to 'tests/simple/task_func.v')
-rw-r--r-- | tests/simple/task_func.v | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/tests/simple/task_func.v b/tests/simple/task_func.v new file mode 100644 index 000000000..3a09cbc35 --- /dev/null +++ b/tests/simple/task_func.v @@ -0,0 +1,35 @@ + +module test01(clk, a, b, c, x, y, z, w); + +input clk; +input [7:0] a, b, c; +output reg [7:0] x, y, z, w; + +function [7:0] sum_shift; +input [3:0] s1, s2, s3; +sum_shift = s1 + (s2 << 2) + (s3 << 4); +endfunction + +task reset_w; +w = 0; +endtask + +task add_to; +output [7:0] out; +input [7:0] in; +out = out + in; +endtask + +always @(posedge clk) begin + x = sum_shift(a, b, c); + y = sum_shift(a[7:4], b[5:2], c[3:0]); + z = sum_shift(a[0], b[5:4], c >> 5) ^ sum_shift(1, 2, 3); + + reset_w; + add_to(w, x); + add_to(w, y); + add_to(w, z); +end + +endmodule + |