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-rw-r--r--src/emu/emufwd.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/emu/emufwd.h b/src/emu/emufwd.h
index 8f6ff6d3207..cb0af700c64 100644
--- a/src/emu/emufwd.h
+++ b/src/emu/emufwd.h
@@ -14,6 +14,8 @@
#pragma once
+#include <type_traits>
+
//----------------------------------
// 3rdparty
@@ -98,8 +100,8 @@ class symbol_table;
class debugger_manager;
// declared in devcb.h
-class devcb_read_base;
-class devcb_write_base;
+class devcb_base;
+template <typename Input, std::make_unsigned_t<Input> DefaultMask> class devcb_write;
// declared in devfind.h
class finder_base;