diff options
| author | Clifford Wolf <clifford@clifford.at> | 2014-02-16 22:31:53 +0100 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2014-02-16 22:31:53 +0100 |
| commit | 37cbb1ca60b03cbaaef5041db5f631b90a303f9a (patch) | |
| tree | fb85bab67163a043495a9f7b1e941ae22c5ed511 /manual/PRESENTATION_ExAdv | |
| parent | 6d63f39eb6abbefd8a12f0fe081c33ef1638800c (diff) | |
Progress in presentation
Diffstat (limited to 'manual/PRESENTATION_ExAdv')
| -rw-r--r-- | manual/PRESENTATION_ExAdv/Makefile | 5 | ||||
| -rw-r--r-- | manual/PRESENTATION_ExAdv/mulshift_map.v | 26 | ||||
| -rw-r--r-- | manual/PRESENTATION_ExAdv/mulshift_test.v | 5 | ||||
| -rw-r--r-- | manual/PRESENTATION_ExAdv/mulshift_test.ys | 7 |
4 files changed, 42 insertions, 1 deletions
diff --git a/manual/PRESENTATION_ExAdv/Makefile b/manual/PRESENTATION_ExAdv/Makefile index 74f26327..3bbc239a 100644 --- a/manual/PRESENTATION_ExAdv/Makefile +++ b/manual/PRESENTATION_ExAdv/Makefile @@ -1,5 +1,5 @@ -all: select_01.pdf red_or3x1.pdf sym_mul.pdf mymul.pdf +all: select_01.pdf red_or3x1.pdf sym_mul.pdf mymul.pdf mulshift.pdf select_01.pdf: select_01.v select_01.ys ../../yosys select_01.ys @@ -13,3 +13,6 @@ sym_mul.pdf: sym_mul_* mymul.pdf: mymul_* ../../yosys mymul_test.ys +mulshift.pdf: mulshift_* + ../../yosys mulshift_test.ys + diff --git a/manual/PRESENTATION_ExAdv/mulshift_map.v b/manual/PRESENTATION_ExAdv/mulshift_map.v new file mode 100644 index 00000000..4a3c2a06 --- /dev/null +++ b/manual/PRESENTATION_ExAdv/mulshift_map.v @@ -0,0 +1,26 @@ +module MYMUL(A, B, Y); + parameter WIDTH = 1; + input [WIDTH-1:0] A, B; + output reg [WIDTH-1:0] Y; + + parameter _TECHMAP_CONSTVAL_A_ = WIDTH'bx; + parameter _TECHMAP_CONSTVAL_B_ = WIDTH'bx; + + reg _TECHMAP_FAIL_; + wire [1023:0] _TECHMAP_DO_ = "proc; clean"; + + integer i; + always @* begin + _TECHMAP_FAIL_ <= 1; + for (i = 0; i < WIDTH; i=i+1) begin + if (_TECHMAP_CONSTVAL_A_ === WIDTH'd1 << i) begin + _TECHMAP_FAIL_ <= 0; + Y <= B << i; + end + if (_TECHMAP_CONSTVAL_B_ === WIDTH'd1 << i) begin + _TECHMAP_FAIL_ <= 0; + Y <= A << i; + end + end + end +endmodule diff --git a/manual/PRESENTATION_ExAdv/mulshift_test.v b/manual/PRESENTATION_ExAdv/mulshift_test.v new file mode 100644 index 00000000..4b975f41 --- /dev/null +++ b/manual/PRESENTATION_ExAdv/mulshift_test.v @@ -0,0 +1,5 @@ +module test (A, X, Y); +input [7:0] A; +output [7:0] X = A * 8'd 6; +output [7:0] Y = A * 8'd 8; +endmodule diff --git a/manual/PRESENTATION_ExAdv/mulshift_test.ys b/manual/PRESENTATION_ExAdv/mulshift_test.ys new file mode 100644 index 00000000..c5dac49e --- /dev/null +++ b/manual/PRESENTATION_ExAdv/mulshift_test.ys @@ -0,0 +1,7 @@ +read_verilog mulshift_test.v +hierarchy -check -top test + +techmap -map sym_mul_map.v \ + -map mulshift_map.v;; + +show -prefix mulshift -format pdf -notitle -lib sym_mul_cells.v |