From 81650bcbe06510892b1081f3a9ca199f128d09ba Mon Sep 17 00:00:00 2001
From: zardam <zardam@gmail.com>
Date: Sat, 23 Dec 2023 02:41:11 +0100
Subject: neogeo/neogeo_v.cpp: Make palette byte access behave the same as on
 real hardware (#11869)

On real hardware, a byte writen in palette RAM is repeated in the whole word. This is used by some software to detect emulation.
---
 src/mame/neogeo/neogeo_v.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mame/neogeo/neogeo_v.cpp b/src/mame/neogeo/neogeo_v.cpp
index 79ec4dc4050..7bb9b9d8322 100644
--- a/src/mame/neogeo/neogeo_v.cpp
+++ b/src/mame/neogeo/neogeo_v.cpp
@@ -97,7 +97,7 @@ uint16_t neogeo_base_state::paletteram_r(offs_t offset)
 void neogeo_base_state::paletteram_w(offs_t offset, uint16_t data, uint16_t mem_mask)
 {
 	offset += m_palette_bank;
-	data = COMBINE_DATA(&m_paletteram[offset]);
+	m_paletteram[offset] = data;
 
 	int dark = data >> 15;
 	int r = ((data >> 14) & 0x1) | ((data >> 7) & 0x1e);
-- 
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