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Diffstat (limited to 'src/devices/bus/bbc/exp/mertec.cpp')
-rw-r--r--src/devices/bus/bbc/exp/mertec.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/bus/bbc/exp/mertec.cpp b/src/devices/bus/bbc/exp/mertec.cpp
index 11b3c9dccb9..c561f052460 100644
--- a/src/devices/bus/bbc/exp/mertec.cpp
+++ b/src/devices/bus/bbc/exp/mertec.cpp
@@ -106,7 +106,7 @@ void bbc_mertec_device::device_start()
int bbc_mertec_device::get_analogue_input(int channel_number)
{
- return ((0xff - m_analog->ch_r(channel_number)) << 8);
+ return m_analog->ch_r(channel_number) << 8;
}
void bbc_mertec_device::upd7002_eoc(int data)