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-rw-r--r--src/emu/screen.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/emu/screen.c b/src/emu/screen.c
index 0690695efd5..12bf4280dd8 100644
--- a/src/emu/screen.c
+++ b/src/emu/screen.c
@@ -463,7 +463,10 @@ void screen_device::configure(int width, int height, const rectangle &visarea, a
// if an old style VBLANK_TIME was specified in the MACHINE_CONFIG,
// use it; otherwise calculate the VBLANK period from the visible area
if (m_oldstyle_vblank_supplied)
+ {
m_vblank_period = m_vblank;
+ logerror("%s: Deprecated legacy Old Style screen configured (MCFG_SCREEN_VBLANK_TIME), please use MCFG_SCREEN_RAW_PARAMS instead.\n",this->tag());
+ }
else
m_vblank_period = m_scantime * (height - visarea.height());