From 12c692f6eda7367527fde2a8aad49447a73aa643 Mon Sep 17 00:00:00 2001 From: Eddie Hung Date: Mon, 12 Aug 2019 12:06:45 -0700 Subject: Revert "Merge pull request #1280 from YosysHQ/revert-1266-eddie/ice40_full_adder" This reverts commit c851dc13108021834533094a8a3236da6d9e0161, reversing changes made to f54bf1631ff37a83733c162e6ebd188c1d5ea18f. --- techlibs/ice40/cells_map.v | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-) (limited to 'techlibs/ice40/cells_map.v') diff --git a/techlibs/ice40/cells_map.v b/techlibs/ice40/cells_map.v index b4b831165..0c10c9ac4 100644 --- a/techlibs/ice40/cells_map.v +++ b/techlibs/ice40/cells_map.v @@ -62,26 +62,21 @@ module \$lut (A, Y); endmodule `endif -`ifdef _ABC -module \$__ICE40_FULL_ADDER (output CO, O, input A, B, CI); +`ifndef NO_ADDER +module \$__ICE40_CARRY_WRAPPER (output CO, O, input A, B, CI, I0, I3); + parameter LUT = 0; SB_CARRY carry ( .I0(A), .I1(B), .CI(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) - ) adder ( - .I0(1'b0), - .I1(A), - .I2(B), - .I3(CI), - .O(O) + \$lut #( + .WIDTH(4), + .LUT(LUT) + ) lut ( + .A({I3,B,A,I0}), + .Y(O) ); endmodule `endif -- cgit v1.2.3 From 8a2480526f2ff80cbdf0f0f4279e8989b53b6e9b Mon Sep 17 00:00:00 2001 From: Eddie Hung Date: Mon, 12 Aug 2019 12:19:25 -0700 Subject: Fix $lut pin ordering inside $__ICE40_CARRY_WRAPPER --- techlibs/ice40/cells_map.v | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'techlibs/ice40/cells_map.v') diff --git a/techlibs/ice40/cells_map.v b/techlibs/ice40/cells_map.v index 0c10c9ac4..662423f0a 100644 --- a/techlibs/ice40/cells_map.v +++ b/techlibs/ice40/cells_map.v @@ -75,7 +75,7 @@ module \$__ICE40_CARRY_WRAPPER (output CO, O, input A, B, CI, I0, I3); .WIDTH(4), .LUT(LUT) ) lut ( - .A({I3,B,A,I0}), + .A({I0,A,B,I3}), .Y(O) ); endmodule -- cgit v1.2.3