diff options
Diffstat (limited to 'src/mame/drivers/osborne1.cpp')
-rw-r--r-- | src/mame/drivers/osborne1.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/src/mame/drivers/osborne1.cpp b/src/mame/drivers/osborne1.cpp index 4916929a3f2..1e98a1af636 100644 --- a/src/mame/drivers/osborne1.cpp +++ b/src/mame/drivers/osborne1.cpp @@ -124,15 +124,16 @@ void osborne1_state::osborne1_io(address_map &map) map(0x00, 0x03).mirror(0xfc).w(this, FUNC(osborne1_state::bankswitch_w)); } -ADDRESS_MAP_START(osborne1_state::osborne1nv_io) - ADDRESS_MAP_UNMAP_HIGH - ADDRESS_MAP_GLOBAL_MASK(0xff) +void osborne1_state::osborne1nv_io(address_map &map) +{ + map.unmap_value_high(); + map.global_mask(0xff); - AM_RANGE( 0x00, 0x03 ) AM_WRITE(bankswitch_w) - AM_RANGE( 0x04, 0x04 ) AM_DEVREADWRITE("crtc", mc6845_device, status_r, address_w) - AM_RANGE( 0x05, 0x05 ) AM_DEVREADWRITE("crtc", mc6845_device, register_r, register_w) + map( 0x00, 0x03 ).w(this, FUNC(osborne1_state::bankswitch_w)); + map( 0x04, 0x04 ).rw("crtc", FUNC(mc6845_device::status_r), FUNC(mc6845_device::address_w)); + map( 0x05, 0x05 ).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w)); // seems to be something at 0x06 as well, but no idea what - BIOS writes 0x07 on boot -ADDRESS_MAP_END +} static INPUT_PORTS_START( osborne1 ) |