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Diffstat (limited to 'src/mess/machine/vcs_joybooster.h')
-rw-r--r--src/mess/machine/vcs_joybooster.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mess/machine/vcs_joybooster.h b/src/mess/machine/vcs_joybooster.h
index 89f110b0878..ae914b36617 100644
--- a/src/mess/machine/vcs_joybooster.h
+++ b/src/mess/machine/vcs_joybooster.h
@@ -44,6 +44,14 @@ protected:
virtual UINT8 vcs_joy_r();
virtual UINT8 vcs_pot_x_r();
virtual UINT8 vcs_pot_y_r();
+
+ virtual bool has_pot_x() { return true; }
+ virtual bool has_pot_y() { return true; }
+
+private:
+ required_ioport m_joy;
+ required_ioport m_potx;
+ required_ioport m_poty;
};