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-rw-r--r--src/mame/drivers/crystal.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/crystal.cpp b/src/mame/drivers/crystal.cpp
index c0819105e1d..beafc934ced 100644
--- a/src/mame/drivers/crystal.cpp
+++ b/src/mame/drivers/crystal.cpp
@@ -1493,7 +1493,7 @@ MACHINE_CONFIG_START(crystal_state::crystal)
MCFG_DEVICE_VBLANK_INT_DRIVER("screen", crystal_state, crystal_interrupt)
MCFG_DEVICE_IRQ_ACKNOWLEDGE_DRIVER(crystal_state, icallback)
- MCFG_NVRAM_ADD_0FILL("nvram")
+ NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)