From a1d567712da57d300800aa351e26b018dd1e2c0c Mon Sep 17 00:00:00 2001 From: Miodrag Milanovic Date: Sun, 7 Apr 2024 19:38:47 +0200 Subject: [PATCH] fix co on nx_cy --- techlibs/nanoxplore/arith_map.v | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/techlibs/nanoxplore/arith_map.v b/techlibs/nanoxplore/arith_map.v index 7b4534b8350..39d03229dce 100644 --- a/techlibs/nanoxplore/arith_map.v +++ b/techlibs/nanoxplore/arith_map.v @@ -35,6 +35,8 @@ module _80_nx_cy_alu (A, B, CI, BI, X, Y, CO); input CI, BI; (* force_downto *) output [Y_WIDTH-1:0] CO; + (* force_downto *) + wire [Y_WIDTH-1:0] COx; wire _TECHMAP_FAIL_ = Y_WIDTH <= 2; @@ -52,18 +54,18 @@ module _80_nx_cy_alu (A, B, CI, BI, X, Y, CO); generate for (i = 0; i < Y_WIDTH; i = i + 1) begin: slice NX_CY_1BIT #(.first(i==0)) alu_i ( - .CI(i==0 ? CI : CO[i-1]), + .CI(i==0 ? CI : COx[i-1]), .A(AA[i]), .B(BB[i]), .S(Y[i]), - .CO(CO[i]) + .CO(COx[i]) ); end: slice endgenerate NX_CY_1BIT alu_cout( - .CI(CO[Y_WIDTH-1]), + .CI(COx[Y_WIDTH-1]), .A(1'b0), .B(1'b0), .S(CO[Y_WIDTH-1])