From b0fea67cc66ceac64e2cb71874c36cde21aa34df Mon Sep 17 00:00:00 2001 From: David Shah Date: Fri, 13 Jul 2018 15:49:59 +0200 Subject: [PATCH] ecp5: Fixing arith_map Signed-off-by: David Shah --- techlibs/ecp5/arith_map.v | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/techlibs/ecp5/arith_map.v b/techlibs/ecp5/arith_map.v index 3c2b86deb..cf21ee80e 100644 --- a/techlibs/ecp5/arith_map.v +++ b/techlibs/ecp5/arith_map.v @@ -51,7 +51,7 @@ module _80_ecp5_alu (A, B, CI, BI, X, Y, CO); wire [Y_WIDTH2-1:0] AA = A_buf; wire [Y_WIDTH2-1:0] BB = BI ? ~B_buf : B_buf; wire [Y_WIDTH2-1:0] C = {CO, CI}; - wire [Y_WIDTH2-1:0] FCO; + wire [Y_WIDTH2-1:0] FCO, Y1; genvar i; generate for (i = 0; i < Y_WIDTH2; i = i + 2) begin:slice @@ -64,14 +64,15 @@ module _80_ecp5_alu (A, B, CI, BI, X, Y, CO); .CIN(C[i]), .A0(AA[i]), .B0(BB[i]), .C0(1'b0), .D0(1'b1), .A1(AA[i+1]), .B1(BB[i]), .C1(1'b0), .D1(1'b1), - .S0(F0), .S1(F1), + .S0(Y[i]), .S1(Y1[i]), .COUT(FCO[i]) ); assign CO[i] = (AA[i] && BB[i]) || (C[i] && (AA[i] || BB[i])); - if (i < Y_WIDTH) + if (i < Y_WIDTH) begin assign CO[i+1] = FCO[i]; - + assign Y[i+1] = Y1[i]; + end end endgenerate assign X = AA ^ BB; -- 2.30.2