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-rw-r--r--c/src/libchip/serial/ns16550.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/c/src/libchip/serial/ns16550.c b/c/src/libchip/serial/ns16550.c
index 2edd685aaf..a975dbb736 100644
--- a/c/src/libchip/serial/ns16550.c
+++ b/c/src/libchip/serial/ns16550.c
@@ -1,5 +1,8 @@
/*
- * This file contains the TTY driver for the NS16550
+ * This file contains the TTY driver for the National Semiconductor NS16550.
+ *
+ * This part is widely cloned and second sourced. It is found in a number
+ * of "Super IO" controllers.
*
* COPYRIGHT (c) 1998 by Radstone Technology
*