mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-08-05 02:40:25 +00:00
Code Activity

Merge remote-tracking branch 'origin/master' into xc7mux

Browse source
This commit is contained in:
Eddie Hung 2019-06-28 11:09:42 -07:00
commit 4ef26d4755
22 changed files with 338 additions and 174 deletions
Download patch file Download diff file Expand all files Collapse all files

4
techlibs/xilinx/cells_sim.v
View file

@ -181,8 +181,8 @@ module XORCY(output O, input CI, LI);
assign O = CI ^ LI;
endmodule
(* abc_box_id = 4, abc_carry, lib_whitebox *)
module CARRY4((* abc_carry_out *) output [3:0] CO, output [3:0] O, (* abc_carry_in *) input CI, input CYINIT, input [3:0] DI, S);
(* abc_box_id = 3, abc_carry="CI,CO", lib_whitebox *)
module CARRY4(output [3:0] CO, O, input CI, CYINIT, input [3:0] DI, S);
assign O = S ^ {CO[2:0], CI | CYINIT};
assign CO[0] = S[0] ? CI | CYINIT : DI[0];
assign CO[1] = S[1] ? CO[0] : DI[1];