diff options
Diffstat (limited to 'src/mame/drivers/bcs3.cpp')
-rw-r--r-- | src/mame/drivers/bcs3.cpp | 51 |
1 files changed, 27 insertions, 24 deletions
diff --git a/src/mame/drivers/bcs3.cpp b/src/mame/drivers/bcs3.cpp index 833d5a3220e..e5af07d7498 100644 --- a/src/mame/drivers/bcs3.cpp +++ b/src/mame/drivers/bcs3.cpp @@ -133,31 +133,34 @@ READ8_MEMBER( bcs3_state::zx_r ) return 0xf7; } -ADDRESS_MAP_START(bcs3_state::bcs3_mem) - ADDRESS_MAP_UNMAP_HIGH - AM_RANGE( 0x0000, 0x0fff ) AM_MIRROR(0x2000) AM_ROM AM_REGION("roms", 0) - AM_RANGE( 0x1000, 0x13ff ) AM_MIRROR(0x2000) AM_READ(keyboard_r) - AM_RANGE( 0x1400, 0x17ff ) AM_MIRROR(0x2000) AM_NOP // /WAIT circuit - AM_RANGE( 0x1800, 0x1bff ) AM_MIRROR(0x2000) AM_READ(video_r) - AM_RANGE( 0x1c00, 0x1fff ) AM_MIRROR(0x2000) AM_RAM AM_SHARE("videoram") -ADDRESS_MAP_END - -ADDRESS_MAP_START(bcs3_state::bcs3a_mem) - ADDRESS_MAP_UNMAP_HIGH - AM_RANGE( 0x0000, 0x0fff ) AM_MIRROR(0x2000) AM_ROM AM_REGION("roms", 0) - AM_RANGE( 0x1000, 0x13ff ) AM_MIRROR(0x2000) AM_READ(keyboard_r) - AM_RANGE( 0x1400, 0x17ff ) AM_MIRROR(0x2000) AM_NOP // /WAIT circuit - AM_RANGE( 0x1800, 0x1bff ) AM_MIRROR(0x2000) AM_READ(zx_r) - AM_RANGE( 0x3c00, 0x7fff ) AM_RAM AM_SHARE("videoram") - AM_RANGE( 0xf000, 0xf3ff ) AM_ROM AM_REGION("roms", 0x1000) -ADDRESS_MAP_END - -ADDRESS_MAP_START(bcs3_state::bcs3_io) - ADDRESS_MAP_UNMAP_HIGH - ADDRESS_MAP_GLOBAL_MASK(3) +void bcs3_state::bcs3_mem(address_map &map) +{ + map.unmap_value_high(); + map(0x0000, 0x0fff).mirror(0x2000).rom().region("roms", 0); + map(0x1000, 0x13ff).mirror(0x2000).r(this, FUNC(bcs3_state::keyboard_r)); + map(0x1400, 0x17ff).mirror(0x2000).noprw(); // /WAIT circuit + map(0x1800, 0x1bff).mirror(0x2000).r(this, FUNC(bcs3_state::video_r)); + map(0x1c00, 0x1fff).mirror(0x2000).ram().share("videoram"); +} + +void bcs3_state::bcs3a_mem(address_map &map) +{ + map.unmap_value_high(); + map(0x0000, 0x0fff).mirror(0x2000).rom().region("roms", 0); + map(0x1000, 0x13ff).mirror(0x2000).r(this, FUNC(bcs3_state::keyboard_r)); + map(0x1400, 0x17ff).mirror(0x2000).noprw(); // /WAIT circuit + map(0x1800, 0x1bff).mirror(0x2000).r(this, FUNC(bcs3_state::zx_r)); + map(0x3c00, 0x7fff).ram().share("videoram"); + map(0xf000, 0xf3ff).rom().region("roms", 0x1000); +} + +void bcs3_state::bcs3_io(address_map &map) +{ + map.unmap_value_high(); + map.global_mask(3); // coded in the rom as F8 to FB - AM_RANGE( 0x00, 0x03 ) AM_DEVREADWRITE("ctc", z80ctc_device, read, write) -ADDRESS_MAP_END + map(0x00, 0x03).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); +} /* Input ports */ static INPUT_PORTS_START( bcs3 ) |