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-rw-r--r--src/mame/drivers/pong.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/mame/drivers/pong.cpp b/src/mame/drivers/pong.cpp
index eabeebdc7b6..a140ea5ea8a 100644
--- a/src/mame/drivers/pong.cpp
+++ b/src/mame/drivers/pong.cpp
@@ -92,8 +92,11 @@ TODO: Volleyball...
* Net at 256H alternating at 4V
*
+ * Pong videos:
*
- * http://www.youtube.com/watch?v=pDrRnJOCKZc
+ * https://www.youtube.com/watch?v=pDrRnJOCKZc (no longer available)
+ *
+ * https://www.youtube.com/watch?v=fiShX2pTz9A
*/
static const int NS_PER_CLOCK_PONG = static_cast<int>((double) NETLIST_INTERNAL_RES / (double) 7159000 + 0.5);