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Diffstat (limited to 'src/mame/video/namcos22.cpp')
-rw-r--r--src/mame/video/namcos22.cpp12
1 files changed, 9 insertions, 3 deletions
diff --git a/src/mame/video/namcos22.cpp b/src/mame/video/namcos22.cpp
index 9ae1937bb54..b0f99df0f73 100644
--- a/src/mame/video/namcos22.cpp
+++ b/src/mame/video/namcos22.cpp
@@ -1778,15 +1778,21 @@ TILE_GET_INFO_MEMBER(namcos22_state::get_text_tile_info)
WRITE32_MEMBER(namcos22_state::namcos22_textram_w)
{
+ uint32_t prevdata = m_textram[offset];
COMBINE_DATA(&m_textram[offset]);
- m_bgtilemap->mark_tile_dirty(offset * 2);
- m_bgtilemap->mark_tile_dirty(offset * 2 + 1);
+ if (prevdata != m_textram[offset])
+ {
+ m_bgtilemap->mark_tile_dirty(offset * 2);
+ m_bgtilemap->mark_tile_dirty(offset * 2 + 1);
+ }
}
WRITE32_MEMBER(namcos22_state::namcos22_cgram_w)
{
+ uint32_t prevdata = m_cgram[offset];
COMBINE_DATA(&m_cgram[offset]);
- m_gfxdecode->gfx(0)->mark_dirty(offset/32);
+ if (prevdata != m_cgram[offset])
+ m_gfxdecode->gfx(0)->mark_dirty(offset/32);
}
READ32_MEMBER(namcos22_state::namcos22_tilemapattr_r)