diff options
Diffstat (limited to 'techlibs/xilinx/cells_sim.v')
| -rw-r--r-- | techlibs/xilinx/cells_sim.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/techlibs/xilinx/cells_sim.v b/techlibs/xilinx/cells_sim.v index 4a1e334d6..94bc3ef86 100644 --- a/techlibs/xilinx/cells_sim.v +++ b/techlibs/xilinx/cells_sim.v @@ -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]; |