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| author | Miodrag Milanovic <mmicko@gmail.com> | 2019-10-18 12:19:59 +0200 |
|---|---|---|
| committer | Miodrag Milanovic <mmicko@gmail.com> | 2019-10-18 12:19:59 +0200 |
| commit | 5603595e5c0efd2afc9ba810e6e5992e5d81d44c (patch) | |
| tree | dcf99c611410e055a7ea71c970938ed6ee50a3c6 /tests/arch/common/adffs.v | |
| parent | ab98f2dccf52a1bba396fe313ea0670603dc45ca (diff) | |
| download | yosys-5603595e5c0efd2afc9ba810e6e5992e5d81d44c.tar.gz yosys-5603595e5c0efd2afc9ba810e6e5992e5d81d44c.tar.bz2 yosys-5603595e5c0efd2afc9ba810e6e5992e5d81d44c.zip | |
Share common tests
Diffstat (limited to 'tests/arch/common/adffs.v')
| -rw-r--r-- | tests/arch/common/adffs.v | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/tests/arch/common/adffs.v b/tests/arch/common/adffs.v new file mode 100644 index 000000000..223b52d21 --- /dev/null +++ b/tests/arch/common/adffs.v @@ -0,0 +1,47 @@ +module adff + ( input d, clk, clr, output reg q ); + initial begin + q = 0; + end + always @( posedge clk, posedge clr ) + if ( clr ) + q <= 1'b0; + else + q <= d; +endmodule + +module adffn + ( input d, clk, clr, output reg q ); + initial begin + q = 0; + end + always @( posedge clk, negedge clr ) + if ( !clr ) + q <= 1'b0; + else + q <= d; +endmodule + +module dffs + ( input d, clk, pre, clr, output reg q ); + initial begin + q = 0; + end + always @( posedge clk ) + if ( pre ) + q <= 1'b1; + else + q <= d; +endmodule + +module ndffnr + ( input d, clk, pre, clr, output reg q ); + initial begin + q = 0; + end + always @( negedge clk ) + if ( !clr ) + q <= 1'b0; + else + q <= d; +endmodule |