add comment for init fn

diff --git a/src/bsv/actual_pinmux.py b/src/bsv/actual_pinmux.py
index 63cef9d8c92f0ace6f9ec58cd30f10d92c0f2cc4..c382e7e512cc05ddd12227da7c72398ca8fe9522 100644 (file)
--- a/src/bsv/actual_pinmux.py
+++ b/src/bsv/actual_pinmux.py
@@ -36,6 +36,10 @@ def transfn(temp):
 
 
 def init(p, ifaces):
+    """ generates the actual output pinmux for each io-cell.  blank lines
+        need to output "0" to the iopad, if there is no entry in
+        that column.
+    """
     p.pinmux = ' '
     global dedicated_wire
     for cell in p.muxed_cells: