diff options
| author | Aman Goel <amangoel@umich.edu> | 2019-09-27 12:30:27 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-09-27 12:30:27 -0400 |
| commit | cb0dc6e68b9432edc9c30c153954be53c8576911 (patch) | |
| tree | c137f970f949117d04632158d73bfe1f9c146e6f /techlibs/ice40/arith_map.v | |
| parent | 4d343fc1cdafe469484846051680ca0b1f948549 (diff) | |
| parent | 4b15cf5f76e2226bbce1a73d1e0ff54fbf093fe8 (diff) | |
| download | yosys-cb0dc6e68b9432edc9c30c153954be53c8576911.tar.gz yosys-cb0dc6e68b9432edc9c30c153954be53c8576911.tar.bz2 yosys-cb0dc6e68b9432edc9c30c153954be53c8576911.zip | |
Merge pull request #7 from YosysHQ/master
Syncing with official repo
Diffstat (limited to 'techlibs/ice40/arith_map.v')
| -rw-r--r-- | techlibs/ice40/arith_map.v | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/techlibs/ice40/arith_map.v b/techlibs/ice40/arith_map.v index 4449fdc1b..26b24db9e 100644 --- a/techlibs/ice40/arith_map.v +++ b/techlibs/ice40/arith_map.v @@ -44,23 +44,19 @@ module _80_ice40_alu (A, B, CI, BI, X, Y, CO); genvar i; generate for (i = 0; i < Y_WIDTH; i = i + 1) begin:slice - SB_CARRY carry ( - .I0(AA[i]), - .I1(BB[i]), + \$__ICE40_CARRY_WRAPPER #( + // A[0]: 1010 1010 1010 1010 + // A[1]: 1100 1100 1100 1100 + // A[2]: 1111 0000 1111 0000 + // A[3]: 1111 1111 0000 0000 + .LUT(16'b 0110_1001_1001_0110) + ) fadd ( + .A(AA[i]), + .B(BB[i]), .CI(C[i]), - .CO(CO[i]) - ); - 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) - ) adder ( .I0(1'b0), - .I1(AA[i]), - .I2(BB[i]), .I3(C[i]), + .CO(CO[i]), .O(Y[i]) ); end endgenerate |