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-rw-r--r--src/emu/ioport.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/emu/ioport.c b/src/emu/ioport.c
index e34604fd506..629135eef58 100644
--- a/src/emu/ioport.c
+++ b/src/emu/ioport.c
@@ -1236,7 +1236,10 @@ void natural_keyboard::build_codes(ioport_manager &manager)
{
keycode_map_entry newcode;
if (curshift == 0)
+ {
newcode.field[0] = field;
+ newcode.field[1] = 0;
+ }
else
{
newcode.field[0] = shift[curshift - 1];