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-rw-r--r--src/mess/machine/abc77.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mess/machine/abc77.h b/src/mess/machine/abc77.h
index 870e6757976..c5d34c7dc3c 100644
--- a/src/mess/machine/abc77.h
+++ b/src/mess/machine/abc77.h
@@ -118,6 +118,7 @@ protected:
required_ioport m_x9;
required_ioport m_x10;
required_ioport m_x11;
+ required_ioport m_dsw;
int m_txd; // transmit data
int m_keylatch; // keyboard row latch