Index: trunk/util/boxsym-rnd/generator.awk
===================================================================
--- trunk/util/boxsym-rnd/generator.awk	(revision 2856)
+++ trunk/util/boxsym-rnd/generator.awk	(revision 2857)
@@ -66,7 +66,7 @@
 # draw pins of a given slot:loc, with first pin touching the box at x0;y0
 # px and py are x and y dir for the pin line, stx and sty are stepping to
 # the next coord. State is stored in ST
-function draw_pins(slot, ALIGN, loc, x0, y0, stx, sty   ,ST,n,v,i)
+function draw_pins(slot, ALIGN, loc, x0, y0, stx, sty   ,ST,n,v,i,siden)
 {
 	if (slot == "") { # all slots
 		for(n = 0; n < nslots; n++)
@@ -77,6 +77,7 @@
 	ST["y"] = y0 + ALIGN[loc, "y0"]
 
 	ST["pdir"] = loc
+	siden = 0
 	for(n = 0; n < SLOT[slot, "npins"]; n++) {
 		pin = PINS[slot, n]
 		if (PIN[pin, "loc"] ==  loc) {
@@ -86,6 +87,11 @@
 					draw_pin(pin, ST, i, A)
 					ST["x"] += stx
 					ST["y"] += sty
+					if ((ALIGN["midgap", loc] != "") && (siden == ALIGN["midgap", loc])) {
+						ST["x"] += stx
+						ST["y"] += sty
+					}
+					siden++
 				}
 			}
 			else {
@@ -92,6 +98,11 @@
 				draw_pin(pin, ST, "", A)
 				ST["x"] += stx
 				ST["y"] += sty
+				if ((ALIGN["midgap", loc] != "") && (siden == ALIGN["midgap", loc])) {
+					ST["x"] += stx
+					ST["y"] += sty
+				}
+				siden++
 			}
 		}
 	}
@@ -112,7 +123,7 @@
 {
 	diff = ALIGN["box",boxloc] - ALIGN[loc,"count"]
 	if (how == "center")
-		ALIGN[loc, target_field] = diff/2
+		ALIGN[loc, target_field] = diff/2-0.5
 	else if ((how == "begin") || (how == ""))
 		ALIGN[loc, target_field] = 0
 	else if (how == "end")
@@ -138,6 +149,20 @@
 	return adj1 || adj2
 }
 
+# Calculate where to place a gap (after which pin) so that an even number of
+# pins on an odd sized side distribute symmetrical
+function align_get_midgap(size, numpins, how)
+{
+	if (how != "center")
+		return ""
+
+	if ((numpins < 2) || (numpins % 2) || ((size % 2) != 0))
+		return ""
+
+# we have even number of pins for odd size
+	return numpins/2-1
+}
+
 function align_pins(sn, ALIGN,     TXTBRD)
 {
 	ALIGN["top","count"] = count_pins(sn, "top", ALIGN["cfg", "expand_slot"], TXTBRD)
@@ -160,6 +185,10 @@
 	ALIGN["box","height"] += align_adjust_center(ALIGN["box","height"], ALIGN["left", "count"], SLOT[sn, "pinalign", "left"], ALIGN["right", "count"], SLOT[sn, "pinalign", "right"])
 	ALIGN["box","width"] += align_adjust_center(ALIGN["box","width"], ALIGN["bottom", "count"], SLOT[sn, "pinalign", "bottom"], ALIGN["top", "count"], SLOT[sn, "pinalign", "top"])
 
+	ALIGN["midgap", "left"] = align_get_midgap(ALIGN["box","height"], ALIGN["left", "count"], SLOT[sn, "pinalign", "left"])
+	ALIGN["midgap", "right"] = align_get_midgap(ALIGN["box","height"], ALIGN["right", "count"], SLOT[sn, "pinalign", "right"])
+	ALIGN["midgap", "top"] = align_get_midgap(ALIGN["box","width"], ALIGN["top", "count"], SLOT[sn, "pinalign", "top"])
+	ALIGN["midgap", "bottom"] = align_get_midgap(ALIGN["box","width"], ALIGN["bottom", "count"], SLOT[sn, "pinalign", "bottom"])
 
 	align_calc(ALIGN, "left", "height", "y0", SLOT[sn, "pinalign", "left"])
 	align_calc(ALIGN, "right", "height", "y0", SLOT[sn, "pinalign", "right"])