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-rw-r--r--src/mame/drivers/chaos.cpp8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/mame/drivers/chaos.cpp b/src/mame/drivers/chaos.cpp
index 50b4c608d13..13d3e84cb96 100644
--- a/src/mame/drivers/chaos.cpp
+++ b/src/mame/drivers/chaos.cpp
@@ -73,10 +73,10 @@ void chaos_state::mem_map(address_map &map)
void chaos_state::io_map(address_map &map)
{
map.unmap_value_high();
- map(0x1e, 0x1e).r(this, FUNC(chaos_state::port1e_r));
- map(0x1f, 0x1f).rw(this, FUNC(chaos_state::port90_r), FUNC(chaos_state::port1f_w));
- map(0x90, 0x90).r(this, FUNC(chaos_state::port90_r));
- map(0x91, 0x91).r(this, FUNC(chaos_state::port91_r));
+ map(0x1e, 0x1e).r(FUNC(chaos_state::port1e_r));
+ map(0x1f, 0x1f).rw(FUNC(chaos_state::port90_r), FUNC(chaos_state::port1f_w));
+ map(0x90, 0x90).r(FUNC(chaos_state::port90_r));
+ map(0x91, 0x91).r(FUNC(chaos_state::port91_r));
map(0x92, 0x92).w(m_terminal, FUNC(generic_terminal_device::write));
}