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-rw-r--r--src/mame/machine/snessdd1.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/mame/machine/snessdd1.c b/src/mame/machine/snessdd1.c
index f12cd26a918..2cf2d8d13da 100644
--- a/src/mame/machine/snessdd1.c
+++ b/src/mame/machine/snessdd1.c
@@ -1,3 +1,19 @@
+/***************************************************************************
+
+ snessdd1.c
+
+ File to handle emulation of the SNES "S-DD1" add-on chip.
+
+ Based on C++ implementation by Byuu in BSNES.
+
+ Byuu's code is released under GNU General Public License
+ version 2 as published by the Free Software Foundation.
+ The implementation below is released under the MAME license
+ for use in MAME, MESS and derivatives by permission of the
+ author
+
+***************************************************************************/
+
static UINT8 sdd1_read(running_machine* machine, UINT32 addr);
typedef struct //Input Manager