mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-10-23 07:54:35 +00:00
Code Activity

abc9: add flop boxes to basic $_DFF_P_ and $_DFF_N_ too

Browse source
This commit is contained in:
Eddie Hung 2020-04-16 10:24:02 -07:00
parent 7812a2959b
commit 48052ad813
7 changed files with 88 additions and 24 deletions
Download patch file Download diff file Expand all files Collapse all files

20
techlibs/common/abc9_model.v
View file

@ -5,3 +5,23 @@ module \$__ABC9_DELAY (input I, output O);
(I => O) = DELAY;
endspecify
endmodule
(* abc9_flop, abc9_box, lib_whitebox *)
module $__DFF_N__$abc9_flop(input C, D, Q, (* init=INIT *) output n1);
parameter [0:0] INIT = 1'bx;
assign n1 = D;
specify
$setup(D, posedge C, 0);
(posedge C => (n1:D)) = 0;
endspecify
endmodule
(* abc9_flop, abc9_box, lib_whitebox *)
module $__DFF_P__$abc9_flop(input C, D, Q, (* init=INIT *) output n1);
parameter [0:0] INIT = 1'bx;
assign n1 = D;
specify
$setup(D, posedge C, 0);
(posedge C => (n1:D)) = 0;
endspecify
endmodule