diff options
Diffstat (limited to 'src/mame/drivers/istellar.cpp')
-rw-r--r-- | src/mame/drivers/istellar.cpp | 84 |
1 files changed, 45 insertions, 39 deletions
diff --git a/src/mame/drivers/istellar.cpp b/src/mame/drivers/istellar.cpp index 2afb8cc846a..f985f1e77d3 100644 --- a/src/mame/drivers/istellar.cpp +++ b/src/mame/drivers/istellar.cpp @@ -180,50 +180,56 @@ WRITE8_MEMBER(istellar_state::z80_2_ldp_write) /* PROGRAM MAPS */ -ADDRESS_MAP_START(istellar_state::z80_0_mem) - AM_RANGE(0x0000,0x9fff) AM_ROM - AM_RANGE(0xa000,0xa7ff) AM_RAM - AM_RANGE(0xa800,0xabff) AM_RAM AM_SHARE("tile_ram") - AM_RANGE(0xac00,0xafff) AM_RAM AM_SHARE("tile_ctrl_ram") - AM_RANGE(0xb000,0xb3ff) AM_RAM AM_SHARE("sprite_ram") -ADDRESS_MAP_END - -ADDRESS_MAP_START(istellar_state::z80_1_mem) - AM_RANGE(0x0000,0x1fff) AM_ROM - AM_RANGE(0x4000,0x47ff) AM_RAM -ADDRESS_MAP_END - -ADDRESS_MAP_START(istellar_state::z80_2_mem) - AM_RANGE(0x0000,0x17ff) AM_ROM - AM_RANGE(0x1800,0x1fff) AM_RAM - AM_RANGE(0xc000,0xc000) AM_READ(z80_2_unknown_read) /* Seems to be thrown away every time it's read - maybe interrupt related? */ -ADDRESS_MAP_END +void istellar_state::z80_0_mem(address_map &map) +{ + map(0x0000, 0x9fff).rom(); + map(0xa000, 0xa7ff).ram(); + map(0xa800, 0xabff).ram().share("tile_ram"); + map(0xac00, 0xafff).ram().share("tile_ctrl_ram"); + map(0xb000, 0xb3ff).ram().share("sprite_ram"); +} + +void istellar_state::z80_1_mem(address_map &map) +{ + map(0x0000, 0x1fff).rom(); + map(0x4000, 0x47ff).ram(); +} + +void istellar_state::z80_2_mem(address_map &map) +{ + map(0x0000, 0x17ff).rom(); + map(0x1800, 0x1fff).ram(); + map(0xc000, 0xc000).r(this, FUNC(istellar_state::z80_2_unknown_read)); /* Seems to be thrown away every time it's read - maybe interrupt related? */ +} /* IO MAPS */ -ADDRESS_MAP_START(istellar_state::z80_0_io) - ADDRESS_MAP_GLOBAL_MASK(0xff) - AM_RANGE(0x00,0x00) AM_READ_PORT("IN0") - AM_RANGE(0x02,0x02) AM_READ_PORT("DSW1") - AM_RANGE(0x03,0x03) AM_READ_PORT("DSW2") +void istellar_state::z80_0_io(address_map &map) +{ + map.global_mask(0xff); + map(0x00, 0x00).portr("IN0"); + map(0x02, 0x02).portr("DSW1"); + map(0x03, 0x03).portr("DSW2"); /*AM_RANGE(0x04,0x04) AM_WRITE(volatile_palette_write)*/ - AM_RANGE(0x05,0x05) AM_READWRITE(z80_0_latch1_read,z80_0_latch2_write) -ADDRESS_MAP_END - -ADDRESS_MAP_START(istellar_state::z80_1_io) - ADDRESS_MAP_GLOBAL_MASK(0xff) - AM_RANGE(0x00,0x00) AM_NOP /*AM_READWRITE(z80_1_slatch_read,z80_1_slatch_write)*/ - AM_RANGE(0x01,0x01) AM_NOP /*AM_READWRITE(z80_1_nmienable,z80_1_soundwrite_front)*/ - AM_RANGE(0x02,0x02) AM_NOP /*AM_WRITE(z80_1_soundwrite_rear)*/ -ADDRESS_MAP_END - -ADDRESS_MAP_START(istellar_state::z80_2_io) - ADDRESS_MAP_GLOBAL_MASK(0xff) - AM_RANGE(0x00,0x00) AM_READWRITE(z80_2_ldp_read,z80_2_ldp_write) - AM_RANGE(0x01,0x01) AM_READWRITE(z80_2_latch2_read,z80_2_latch1_write) - AM_RANGE(0x02,0x02) AM_READ(z80_2_nmienable) + map(0x05, 0x05).rw(this, FUNC(istellar_state::z80_0_latch1_read), FUNC(istellar_state::z80_0_latch2_write)); +} + +void istellar_state::z80_1_io(address_map &map) +{ + map.global_mask(0xff); + map(0x00, 0x00).noprw(); /*AM_READWRITE(z80_1_slatch_read,z80_1_slatch_write)*/ + map(0x01, 0x01).noprw(); /*AM_READWRITE(z80_1_nmienable,z80_1_soundwrite_front)*/ + map(0x02, 0x02).noprw(); /*AM_WRITE(z80_1_soundwrite_rear)*/ +} + +void istellar_state::z80_2_io(address_map &map) +{ + map.global_mask(0xff); + map(0x00, 0x00).rw(this, FUNC(istellar_state::z80_2_ldp_read), FUNC(istellar_state::z80_2_ldp_write)); + map(0x01, 0x01).rw(this, FUNC(istellar_state::z80_2_latch2_read), FUNC(istellar_state::z80_2_latch1_write)); + map(0x02, 0x02).r(this, FUNC(istellar_state::z80_2_nmienable)); /* AM_RANGE(0x03,0x03) AM_WRITE(z80_2_ldtrans_write)*/ -ADDRESS_MAP_END +} /* PORTS */ |