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Diffstat (limited to 'src/mame/drivers/v6809.cpp')
-rw-r--r--src/mame/drivers/v6809.cpp7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/mame/drivers/v6809.cpp b/src/mame/drivers/v6809.cpp
index c09bd486b81..c9a27f1ea2f 100644
--- a/src/mame/drivers/v6809.cpp
+++ b/src/mame/drivers/v6809.cpp
@@ -127,6 +127,10 @@ static ADDRESS_MAP_START(v6809_mem, AS_PROGRAM, 8, v6809_state)
AM_RANGE(0xf800, 0xffff) AM_ROM
ADDRESS_MAP_END
+static ADDRESS_MAP_START(v6809_io, AS_PROGRAM, 8, v6809_state)
+ AM_RANGE(0x0064, 0x0064) AM_WRITENOP
+ADDRESS_MAP_END
+
/* Input ports */
static INPUT_PORTS_START( v6809 )
@@ -276,8 +280,9 @@ SLOT_INTERFACE_END
static MACHINE_CONFIG_START( v6809 )
/* basic machine hardware */
- MCFG_CPU_ADD("maincpu", MC6809, XTAL_16MHz / 4) // divided by 4 again internally
+ MCFG_CPU_ADD("maincpu", M6809, XTAL_16MHz / 4)
MCFG_CPU_PROGRAM_MAP(v6809_mem)
+ MCFG_CPU_IO_MAP(v6809_io)
MCFG_MACHINE_RESET_OVERRIDE(v6809_state, v6809)
/* video hardware */