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Diffstat (limited to 'src/mame/audio/copsnrob.cpp')
-rw-r--r--src/mame/audio/copsnrob.cpp6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/mame/audio/copsnrob.cpp b/src/mame/audio/copsnrob.cpp
index 162e263da91..eaee183f1bc 100644
--- a/src/mame/audio/copsnrob.cpp
+++ b/src/mame/audio/copsnrob.cpp
@@ -628,7 +628,7 @@ DISCRETE_SOUND_START(copsnrob)
************************************************/
DISCRETE_CUSTOM1(COPSNROB_NOISE_1, copsnrob_custom_noise, /* IC J2, pin 10 */
COPSNROB_2V, /* CLK */
- NULL)
+ nullptr)
/* COPSNROB_NOISE_2 derived from sub out of above custom module - IC J2, pin 11 */
/* We use the measured 555 timer frequency (IC M3) for speed */
DISCRETE_COUNTER(NODE_40, /* IC L2 */
@@ -656,12 +656,12 @@ DISCRETE_SOUND_START(copsnrob)
/* We can ignore R47 & R48 */
COPSNROB_ZINGS_INV, /* IC D3, pin 6 */
COPSNROB_R38, COPSNROB_C19,
- NULL)
+ nullptr)
DISCRETE_CUSTOM5(NODE_61, copsnrob_zings_555_astable, /* IC D3, pin 8 & 12 */
NODE_60, /* IC D3, pin 10 */
COPSNROB_R36, COPSNROB_R37,
COPSNROB_C3, COPSNROB_C13,
- NULL)
+ nullptr)
/* FIX - do a better implemetation of IC L4 */
DISCRETE_CRFILTER_VREF(NODE_62, /* IC L4, pin 9 */
NODE_61, /* IN0 */