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Diffstat (limited to 'src/mame/drivers/tankbatt.cpp')
-rw-r--r--src/mame/drivers/tankbatt.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/tankbatt.cpp b/src/mame/drivers/tankbatt.cpp
index 69bf7dbf355..6ae18807587 100644
--- a/src/mame/drivers/tankbatt.cpp
+++ b/src/mame/drivers/tankbatt.cpp
@@ -179,7 +179,8 @@ static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8, tankbatt_state )
AM_RANGE(0x0c18, 0x0c18) AM_WRITENOP /* watchdog ?? */
AM_RANGE(0x6000, 0x7fff) AM_ROM AM_REGION("maincpu",0)
AM_RANGE(0xe000, 0xffff) AM_ROM AM_REGION("maincpu",0) //mirror for the reset/irq vectors
- AM_RANGE(0x2000, 0xffff) AM_READNOP //anything else might be left-over for a diagnostic ROM or something related to the discrete sound HW
+ AM_RANGE(0x2000, 0x5fff) AM_READNOP //anything else might be left-over for a diagnostic ROM or something related to the discrete sound HW
+ AM_RANGE(0x8000, 0xdfff) AM_READNOP
ADDRESS_MAP_END
INTERRUPT_GEN_MEMBER(tankbatt_state::interrupt)