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-rw-r--r--src/mame/drivers/ct486.cpp12
1 files changed, 7 insertions, 5 deletions
diff --git a/src/mame/drivers/ct486.cpp b/src/mame/drivers/ct486.cpp
index 4287fa3d0b3..44824156745 100644
--- a/src/mame/drivers/ct486.cpp
+++ b/src/mame/drivers/ct486.cpp
@@ -95,12 +95,14 @@ WRITE_LINE_MEMBER( ct486_state::cs4031_hold )
// ADDRESS MAPS
//**************************************************************************
-ADDRESS_MAP_START(ct486_state::ct486_map)
-ADDRESS_MAP_END
+void ct486_state::ct486_map(address_map &map)
+{
+}
-ADDRESS_MAP_START(ct486_state::ct486_io)
- ADDRESS_MAP_UNMAP_HIGH
-ADDRESS_MAP_END
+void ct486_state::ct486_io(address_map &map)
+{
+ map.unmap_value_high();
+}
//**************************************************************************