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-rw-r--r--src/devices/bus/electron/fbjoy.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/devices/bus/electron/fbjoy.cpp b/src/devices/bus/electron/fbjoy.cpp
index 6c4939edbf5..ce9de6b9081 100644
--- a/src/devices/bus/electron/fbjoy.cpp
+++ b/src/devices/bus/electron/fbjoy.cpp
@@ -67,8 +67,10 @@ void electron_fbjoy_device::device_start()
// expbus_r - expansion data read
//-------------------------------------------------
-uint8_t electron_fbjoy_device::expbus_r(address_space &space, offs_t offset, uint8_t data)
+uint8_t electron_fbjoy_device::expbus_r(address_space &space, offs_t offset)
{
+ uint8_t data = 0xff;
+
if (offset == 0xfcc0)
{
data = m_joy->read() | 0xe0;