--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pirelli/mcsi	Sun Oct 20 04:49:28 2013 +0000
@@ -0,0 +1,15 @@
+Tracing all 4 MCSI signals starting from the Calypso
+
+MCSI_TxD: Calypso ball L10, L1 trace goes to (3829,474).  The trace on L2 gets
+lost in the edge grind-down damage.
+
+MCSI_RxD: Calypso ball M10, no visible trace on L1 - perhaps there is a
+micro-via under the ball?  The ball pad coords are (3841,499).  Looking at L2,
+the micro-via hypothesis seems to be correct: a trace from those coords goes in
+the same bunch as the MCSI_TxD.  But then it gets lost in the damage too.
+
+MCSI_CLK: Calypso ball N10, L1 trace goes to (3898,369).  L2: joins the same
+bunch with MCSI_TxD and MCSI_RxD, then gets lost in the damage.
+
+MCSI_FSYNCH: Calypso ball K9, L1 trace goes to (3865,524).  L2: same story as
+the others.