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-rw-r--r--src/devices/bus/snes/sa1.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/bus/snes/sa1.cpp b/src/devices/bus/snes/sa1.cpp
index 3608aa9bd8d..86363038992 100644
--- a/src/devices/bus/snes/sa1.cpp
+++ b/src/devices/bus/snes/sa1.cpp
@@ -765,7 +765,7 @@ void sns_sa1_device::write_regs(address_space &space, uint32_t offset, uint8_t d
case 2: //sigma (accumulative multiplication)
case 3:
uint64_t acum = (int16_t)m_math_a * (int16_t)m_math_b;
- uint64_t mask = U64(0xffffffffff);
+ uint64_t mask = 0xffffffffffU;
m_math_res += acum;
m_math_overflow = (m_math_res > mask) ? 0x80 : 0;
m_math_res &= mask;