cleanup

diff --git a/techlibs/efinix/arith_map.v b/techlibs/efinix/arith_map.v
index ef903171fe67f08f35450186c9cd211b8233ab7a..56e1b039faf1dc4b4d30fb59ff8380ba2e897a66 100644 (file)
--- a/techlibs/efinix/arith_map.v
+++ b/techlibs/efinix/arith_map.v
@@ -32,6 +32,9 @@ module _80_efinix_alu (A, B, CI, BI, X, Y, CO);
 
        input CI, BI;
        output [Y_WIDTH-1:0] CO;
+   
+   wire CIx;
+   wire [Y_WIDTH-1:0] COx;
 
        wire _TECHMAP_FAIL_ = Y_WIDTH <= 2;
 
@@ -41,14 +44,14 @@ module _80_efinix_alu (A, B, CI, BI, X, Y, CO);
 
        wire [Y_WIDTH-1:0] AA = A_buf;
        wire [Y_WIDTH-1:0] BB = BI ? ~B_buf : B_buf;
-       wire [Y_WIDTH:0] C;
+       wire [Y_WIDTH-1:0] C = { COx, CIx };
 
     EFX_ADD #(.I0_POLARITY(1'b1),.I1_POLARITY(1'b1))
     adder_cin  (
         .I0(CI),
         .I1(1'b1),
         .CI(1'b0),
-        .CO(C[0])
+        .CO(CIx)
        );
 
        genvar i;
@@ -59,13 +62,13 @@ module _80_efinix_alu (A, B, CI, BI, X, Y, CO);
                        .I1(BB[i]),
                        .CI(C[i]),
                        .O(Y[i]),
-                       .CO(C[i+1])
+                       .CO(COx[i])
                );
                EFX_ADD #(.I0_POLARITY(1'b1),.I1_POLARITY(1'b1))                                
                adder_cout  (
                        .I0(1'b0),
                        .I1(1'b0),
-                       .CI(C[i+1]),
+                       .CI(COx[i]),
                        .O(CO[i])
                );
          end: slice