mock-array: fix unaligned mpins

Signed-off-by: Øyvind Harboe <[email protected]>

Author: oharboe

flow/designs/asap7/mock-array/macro-placement.tcl

@@ -9,8 +9,16 @@ for {set row 0} {$row < $rows} {incr row} {
   for {set col 0} {$col < $cols} {incr col} {
     set inst [$block findInst [format "ces_%d_%d" $row $col]]
 
-    set x [expr int((($array_offset_x + (($placement_grid_x * $pitch_x) * $col)) * $units))]
-    set y [expr int((($array_offset_y + (($placement_grid_y * $pitch_y) * $row)) * $units))]
+    set x [expr round((($array_offset_x + (($placement_grid_x * $pitch_x) * $col)) * $units))]
+    set y [expr round((($array_offset_y + (($placement_grid_y * $pitch_y) * $row)) * $units))]
+
+    # belt and suspenders check... ASAP7 macro placement must be aligned to 0.048um
+    if {$x % 48 != 0} {
+        error "x=$x is not divisible by 48"
+    }
+    if {$y % 48 != 0} {
+        error "y=$y is not divisible by 48"
+    }
 
     $inst setOrient R0
     $inst setOrigin $x $y