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-rw-r--r--src/devices/bus/nes/sunsoft.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/bus/nes/sunsoft.cpp b/src/devices/bus/nes/sunsoft.cpp
index 8b527d1ec43..bffd3b2b608 100644
--- a/src/devices/bus/nes/sunsoft.cpp
+++ b/src/devices/bus/nes/sunsoft.cpp
@@ -617,6 +617,6 @@ MACHINE_CONFIG_START(nes_sunsoft_5_device::device_add_mconfig)
// TODO: this is not how Sunsoft 5B clock signaling works!
// The board uses the CLK pin in reality, not hardcoded NTSC values!
- MCFG_SOUND_ADD("ay", YM2149, (XTAL_21_4772MHz/12)/2) // divide by 2 for the internal divider
+ MCFG_SOUND_ADD("ay", YM2149, (XTAL(21'477'272)/12)/2) // divide by 2 for the internal divider
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "addon", 0.50)
MACHINE_CONFIG_END