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-rw-r--r--src/mame/drivers/ninjaw.cpp1
-rw-r--r--src/mame/drivers/warriorb.cpp1
2 files changed, 2 insertions, 0 deletions
diff --git a/src/mame/drivers/ninjaw.cpp b/src/mame/drivers/ninjaw.cpp
index 1a6c4e58760..d3eecd5df84 100644
--- a/src/mame/drivers/ninjaw.cpp
+++ b/src/mame/drivers/ninjaw.cpp
@@ -373,6 +373,7 @@ void ninjaw_state::pancontrol_w(offs_t offset, u8 data)
{
filter_volume_device *flt = nullptr;
offset &= 3;
+ offset ^= 1;
switch (offset)
{
diff --git a/src/mame/drivers/warriorb.cpp b/src/mame/drivers/warriorb.cpp
index d03e5dcb4fa..e6e013fcf1b 100644
--- a/src/mame/drivers/warriorb.cpp
+++ b/src/mame/drivers/warriorb.cpp
@@ -182,6 +182,7 @@ void warriorb_state::pancontrol_w(offs_t offset, u8 data)
{
filter_volume_device *flt = nullptr;
offset &= 3;
+ offset ^= 1;
switch (offset)
{