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Diffstat (limited to 'src/devices/bus/bbc/analogue/cfa3000a.cpp')
-rw-r--r--src/devices/bus/bbc/analogue/cfa3000a.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/bus/bbc/analogue/cfa3000a.cpp b/src/devices/bus/bbc/analogue/cfa3000a.cpp
index da163200c2c..0dfd692df12 100644
--- a/src/devices/bus/bbc/analogue/cfa3000a.cpp
+++ b/src/devices/bus/bbc/analogue/cfa3000a.cpp
@@ -96,5 +96,5 @@ uint8_t cfa3000_anlg_device::ch_r(int channel)
uint8_t cfa3000_anlg_device::pb_r()
{
- return m_buttons->read();
+ return m_buttons->read() & 0x30;
}