examples/versa5g: Improved make_14seg.py from @ldoolitt

Signed-off-by: David Shah <davey1576@gmail.com>

examples/versa5g/make_14seg.py

diff --git a/examples/versa5g/make_14seg.py b/examples/versa5g/make_14seg.py
index f31ee5b..da6b234 100644
--- a/examples/versa5g/make_14seg.py
+++ b/examples/versa5g/make_14seg.py
@@ -1,6 +1,7 @@
 import sys
 # From http://www.plusea.at/downloads/print/AllMySegment-handout.pdf
-# NB odd numbering
+# and https://en.wikipedia.org/wiki/File:14_Segment_LCD_characters.jpg
+# N.B. segment labeling as documented in Versa Dev Board User Guide (schematic)
 font = {
  "A": ['e', 'f', 'a', 'b', 'c', 'p', 'k'],
  "B": ['e', 'f', 'a', 'j', 'p', 'l', 'd'],
@@ -28,15 +29,26 @@
  "X": ['g', 'l', 'n', 'j'],
  "Y": ['g', 'j', 'm'],
  "Z": ['a', 'j', 'n', 'd'],
+ "0": ['e', 'f', 'a', 'b', 'c', 'd'],
+ "1": ['j', 'b', 'c'],
+ "2": ['a', 'b', 'k', 'p', 'e', 'd'],
+ "3": ['a', 'b', 'k', 'c', 'd'],
+ "4": ['f', 'p', 'k', 'b', 'c'],
+ "5": ['a', 'f', 'p', 'k', 'c', 'd'],
+ "6": ['a', 'f', 'e', 'd', 'c', 'k', 'p'],
+ "7": ['a', 'j', 'n'],
+ "8": ['a', 'b', 'c', 'd', 'e', 'f', 'p', 'k'],
+ "9": ['a', 'b', 'c', 'f', 'p', 'k'],
  " ": [],
  "\n": []
 }
 seg_names = "abcdefghjklmnp"
 text = sys.stdin.read()
-print ("    localparam pat_len = {};".format(len(text)))
-print ("    wire [13:0] display_pat[0:pat_len-1];")
+print("    localparam pat_len = {};".format(len(text)))
+print("    wire [13:0] display_pat[0:pat_len-1];")
 for i in range(len(text)):
     segs = font[text[i]]
+    comment = "  // {}".format(text[i]) if segs else ""
     bits = [(seg_names[k] in segs) for k in range(14)]
-    bit_lit = "14'b{}".format("".join(reversed(["1" if b else "0" for b in bits])))
-    print ("    assign display_pat[{}] = {};".format(i, bit_lit))
\ No newline at end of file
+    bit_lit = "14'b" + "".join(reversed(["1" if b else "0" for b in bits]))
+    print("    assign display_pat[{}] = {};{}".format(i, bit_lit, comment))