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Diffstat (limited to 'src/mame/drivers/mephisto_polgar.cpp')
-rw-r--r--src/mame/drivers/mephisto_polgar.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/mephisto_polgar.cpp b/src/mame/drivers/mephisto_polgar.cpp
index 363a46e2e4e..838314807c5 100644
--- a/src/mame/drivers/mephisto_polgar.cpp
+++ b/src/mame/drivers/mephisto_polgar.cpp
@@ -331,7 +331,7 @@ void mephisto_risc_state::mrisc(machine_config &config)
maincpu.set_periodic_int(FUNC(mephisto_risc_state::irq0_line_hold), attotime::from_hz(XTAL(10'000'000) / (1 << 14)));
CHESSMACHINE(config, m_chessm, 14'000'000); // Tasc ChessMachine EC PCB, Mephisto manual says 14MHz (no XTAL)
- config.m_perfect_cpu_quantum = subtag("maincpu");
+ config.set_perfect_quantum("maincpu");
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);