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-rw-r--r--src/emu/driver.cpp18
1 files changed, 0 insertions, 18 deletions
diff --git a/src/emu/driver.cpp b/src/emu/driver.cpp
index 53a4280b493..57d68c929ef 100644
--- a/src/emu/driver.cpp
+++ b/src/emu/driver.cpp
@@ -391,21 +391,3 @@ void driver_device::flip_screen_y_set(u32 on)
updateflip();
}
}
-
-
-/***************************************************************************
-PORT READING HELPERS
-***************************************************************************/
-
-/*-------------------------------------------------
-custom_port_read - act like input_port_read
-but it is a custom port, it is useful for
-e.g. input ports which expect the same port
-repeated both in the upper and lower half
--------------------------------------------------*/
-
-CUSTOM_INPUT_MEMBER(driver_device::custom_port_read)
-{
- const char *tag = (const char *)param;
- return ioport(tag)->read();
-}