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-rw-r--r--src/mame/saitek/prschess.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/saitek/prschess.cpp b/src/mame/saitek/prschess.cpp
index bbbf299030d..e00056ed951 100644
--- a/src/mame/saitek/prschess.cpp
+++ b/src/mame/saitek/prschess.cpp
@@ -187,7 +187,7 @@ INPUT_PORTS_END
void prschess_state::prschess(machine_config &config)
{
/* basic machine hardware */
- M6502(config, m_maincpu, 2000000);
+ M6502(config, m_maincpu, XTAL::u(2000000));
m_maincpu->set_addrmap(AS_PROGRAM, &prschess_state::main_map);
m_maincpu->set_periodic_int(FUNC(prschess_state::nmi_line_pulse), attotime::from_hz(100)); // guessed