From dc4de5b7229e4606c2381639adf07ed18fafa075 Mon Sep 17 00:00:00 2001
From: eito <eito@ret0.org>
Date: Tue, 6 Oct 2020 02:18:13 +0900
Subject: [PATCH] darius2 darius2d warriorb: fix: stereo output channels are
 inverted (#7320)

---
 src/mame/drivers/ninjaw.cpp   | 1 +
 src/mame/drivers/warriorb.cpp | 1 +
 2 files changed, 2 insertions(+)

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)
 	{