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| author | Clifford Wolf <clifford@clifford.at> | 2014-06-14 16:42:30 +0200 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2014-06-14 16:45:16 +0200 |
| commit | 1a487303a081849bd7561772641f90126dcce24e (patch) | |
| tree | 8dee6bb844b53f78061fb48896995ea38c14e6ca /manual/PRESENTATION_ExOth | |
| parent | 22a998903b14b93180b98fe71129160e27793e38 (diff) | |
| download | yosys-1a487303a081849bd7561772641f90126dcce24e.tar.gz yosys-1a487303a081849bd7561772641f90126dcce24e.tar.bz2 yosys-1a487303a081849bd7561772641f90126dcce24e.zip | |
Progress in presentation
Diffstat (limited to 'manual/PRESENTATION_ExOth')
| -rw-r--r-- | manual/PRESENTATION_ExOth/.gitignore | 1 | ||||
| -rw-r--r-- | manual/PRESENTATION_ExOth/Makefile | 8 | ||||
| -rw-r--r-- | manual/PRESENTATION_ExOth/scrambler.v | 14 | ||||
| -rw-r--r-- | manual/PRESENTATION_ExOth/scrambler.ys | 23 |
4 files changed, 46 insertions, 0 deletions
diff --git a/manual/PRESENTATION_ExOth/.gitignore b/manual/PRESENTATION_ExOth/.gitignore new file mode 100644 index 000000000..cf658897d --- /dev/null +++ b/manual/PRESENTATION_ExOth/.gitignore @@ -0,0 +1 @@ +*.dot diff --git a/manual/PRESENTATION_ExOth/Makefile b/manual/PRESENTATION_ExOth/Makefile new file mode 100644 index 000000000..a12beadad --- /dev/null +++ b/manual/PRESENTATION_ExOth/Makefile @@ -0,0 +1,8 @@ + +all: scrambler_p01.pdf scrambler_p02.pdf + +scrambler_p01.pdf: scrambler.ys scrambler.v + ../../yosys scrambler.ys + +scrambler_p02.pdf: scrambler_p01.pdf + diff --git a/manual/PRESENTATION_ExOth/scrambler.v b/manual/PRESENTATION_ExOth/scrambler.v new file mode 100644 index 000000000..d4c1fa2bb --- /dev/null +++ b/manual/PRESENTATION_ExOth/scrambler.v @@ -0,0 +1,14 @@ +module scrambler( + input clk, rst, in_bit, + output reg out_bit +); + reg [31:0] xs; + always @(posedge clk) begin + if (rst) + xs = 1; + xs = xs ^ (xs << 13); + xs = xs ^ (xs >> 17); + xs = xs ^ (xs << 5); + out_bit <= in_bit ^ xs[0]; + end +endmodule diff --git a/manual/PRESENTATION_ExOth/scrambler.ys b/manual/PRESENTATION_ExOth/scrambler.ys new file mode 100644 index 000000000..2ef14c56e --- /dev/null +++ b/manual/PRESENTATION_ExOth/scrambler.ys @@ -0,0 +1,23 @@ + +read_verilog scrambler.v + +hierarchy; proc;; + +cd scrambler +submod -name xorshift32 xs %c %ci %D %c %ci:+[D] %D %ci*:-$dff xs %co %ci %d +cd .. + +show -prefix scrambler_p01 -format pdf -notitle scrambler +show -prefix scrambler_p02 -format pdf -notitle xorshift32 + +echo on + +cd xorshift32 +rename n2 in +rename n1 out + +eval -set in 1 -show out +eval -set in 270369 -show out + +sat -set out 632435482 + |