diff options
Diffstat (limited to 'techlibs/ice40/cells_sim.v')
| -rw-r--r-- | techlibs/ice40/cells_sim.v | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/techlibs/ice40/cells_sim.v b/techlibs/ice40/cells_sim.v index 2205be27d..2a7487f6b 100644 --- a/techlibs/ice40/cells_sim.v +++ b/techlibs/ice40/cells_sim.v @@ -141,8 +141,17 @@ module SB_CARRY (output CO, input I0, I1, CI); assign CO = (I0 && I1) || ((I0 || I1) && CI); endmodule -(* abc_box_id = 1, abc_carry="CI,CO", lib_whitebox *) -module \$__ICE40_FULL_ADDER (output CO, O, input A, B, CI); +(* abc_box_id = 1, lib_whitebox *) +module \$__ICE40_CARRY_WRAPPER ( + (* abc_carry *) + output CO, + output O, + input A, B, + (* abc_carry *) + input CI, + input I0, I3 +); + parameter LUT = 0; SB_CARRY carry ( .I0(A), .I1(B), @@ -150,16 +159,12 @@ module \$__ICE40_FULL_ADDER (output CO, O, input A, B, CI); .CO(CO) ); SB_LUT4 #( - // I0: 1010 1010 1010 1010 - // I1: 1100 1100 1100 1100 - // I2: 1111 0000 1111 0000 - // I3: 1111 1111 0000 0000 - .LUT_INIT(16'b 0110_1001_1001_0110) + .LUT_INIT(LUT) ) adder ( - .I0(1'b0), + .I0(I0), .I1(A), .I2(B), - .I3(CI), + .I3(I3), .O(O) ); endmodule |