Fix CO

diff --git a/techlibs/efinix/arith_map.v b/techlibs/efinix/arith_map.v
index ae955663cbed2f6db9f35151de8019f41874f065..ef903171fe67f08f35450186c9cd211b8233ab7a 100644 (file)
--- a/techlibs/efinix/arith_map.v
+++ b/techlibs/efinix/arith_map.v
@@ -31,7 +31,7 @@ module _80_efinix_alu (A, B, CI, BI, X, Y, CO);
        output [Y_WIDTH-1:0] X, Y;
 
        input CI, BI;
-       output CO;
+       output [Y_WIDTH-1:0] CO;
 
        wire _TECHMAP_FAIL_ = Y_WIDTH <= 2;
 
@@ -41,38 +41,36 @@ 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+1:0] COx;
-       wire [Y_WIDTH+2:0] C = {COx, CI};
+       wire [Y_WIDTH:0] C;
 
-   EFX_ADD #(.I0_POLARITY(1'b1),.I1_POLARITY(1'b1))
-   adder_cin  (
-        .I0(C[0]),
+    EFX_ADD #(.I0_POLARITY(1'b1),.I1_POLARITY(1'b1))
+    adder_cin  (
+        .I0(CI),
         .I1(1'b1),
         .CI(1'b0),
-        .CO(COx[0])
+        .CO(C[0])
        );
 
        genvar i;
        generate for (i = 0; i < Y_WIDTH; i = i + 1) begin: slice
-      EFX_ADD #(.I0_POLARITY(1'b1),.I1_POLARITY(1'b1))
-      adder_i (
-            .I0(AA[i]),
-            .I1(BB[i]),
-            .CI(C[i+1]),
-            .O(Y[i]),
-            .CO(COx[i+1])
-        );
-         end: slice
+               EFX_ADD #(.I0_POLARITY(1'b1),.I1_POLARITY(1'b1))
+               adder_i (
+                       .I0(AA[i]),
+                       .I1(BB[i]),
+                       .CI(C[i]),
+                       .O(Y[i]),
+                       .CO(C[i+1])
+               );
+               EFX_ADD #(.I0_POLARITY(1'b1),.I1_POLARITY(1'b1))                                
+               adder_cout  (
+                       .I0(1'b0),
+                       .I1(1'b0),
+                       .CI(C[i+1]),
+                       .O(CO[i])
+               );
+         end: slice      
        endgenerate
 
-   EFX_ADD #(.I0_POLARITY(1'b1),.I1_POLARITY(1'b1))                            
-   adder_cout  (
-      .I0(1'b0),
-      .I1(1'b0),
-      .CI(C[Y_WIDTH+1]),
-      .O(COx[Y_WIDTH+1])
-   );
-   assign CO = COx[Y_WIDTH+1];
-       /* End implementation */
-       assign X = AA ^ BB;
+   /* End implementation */
+   assign X = AA ^ BB;
 endmodule
\ No newline at end of file