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*************************************/
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static ADDRESS_MAP_START( main_map, AS_PROGRAM, 16 )
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static ADDRESS_MAP_START( main_map, AS_PROGRAM, 16, skullxbo_state )
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AM_RANGE(0x000000, 0x07ffff) AM_ROM
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AM_RANGE(0xff0000, 0xff07ff) AM_WRITE(skullxbo_mobmsb_w)
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AM_RANGE(0xff0000, 0xff07ff) AM_WRITE_LEGACY(skullxbo_mobmsb_w)
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AM_RANGE(0xff0800, 0xff0bff) AM_WRITE(skullxbo_halt_until_hblank_0_w)
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AM_RANGE(0xff0c00, 0xff0fff) AM_WRITE(atarigen_eeprom_enable_w)
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AM_RANGE(0xff1000, 0xff13ff) AM_WRITE(atarigen_video_int_ack_w)
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AM_RANGE(0xff1400, 0xff17ff) AM_WRITE(atarigen_sound_w)
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AM_RANGE(0xff1800, 0xff1bff) AM_WRITE(atarigen_sound_reset_w)
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AM_RANGE(0xff1c00, 0xff1c7f) AM_WRITE(skullxbo_playfieldlatch_w)
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AM_RANGE(0xff1c80, 0xff1cff) AM_WRITE(skullxbo_xscroll_w) AM_BASE_MEMBER(skullxbo_state, m_xscroll)
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AM_RANGE(0xff1d00, 0xff1d7f) AM_WRITE(atarigen_scanline_int_ack_w)
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AM_RANGE(0xff0c00, 0xff0fff) AM_WRITE_LEGACY(atarigen_eeprom_enable_w)
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AM_RANGE(0xff1000, 0xff13ff) AM_WRITE_LEGACY(atarigen_video_int_ack_w)
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AM_RANGE(0xff1400, 0xff17ff) AM_WRITE_LEGACY(atarigen_sound_w)
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AM_RANGE(0xff1800, 0xff1bff) AM_WRITE_LEGACY(atarigen_sound_reset_w)
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AM_RANGE(0xff1c00, 0xff1c7f) AM_WRITE_LEGACY(skullxbo_playfieldlatch_w)
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AM_RANGE(0xff1c80, 0xff1cff) AM_WRITE_LEGACY(skullxbo_xscroll_w) AM_SHARE("xscroll")
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AM_RANGE(0xff1d00, 0xff1d7f) AM_WRITE_LEGACY(atarigen_scanline_int_ack_w)
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AM_RANGE(0xff1d80, 0xff1dff) AM_WRITE(watchdog_reset16_w)
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AM_RANGE(0xff1e00, 0xff1e7f) AM_WRITE(skullxbo_playfieldlatch_w)
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AM_RANGE(0xff1e80, 0xff1eff) AM_WRITE(skullxbo_xscroll_w)
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AM_RANGE(0xff1f00, 0xff1f7f) AM_WRITE(atarigen_scanline_int_ack_w)
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AM_RANGE(0xff1e00, 0xff1e7f) AM_WRITE_LEGACY(skullxbo_playfieldlatch_w)
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AM_RANGE(0xff1e80, 0xff1eff) AM_WRITE_LEGACY(skullxbo_xscroll_w)
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AM_RANGE(0xff1f00, 0xff1f7f) AM_WRITE_LEGACY(atarigen_scanline_int_ack_w)
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AM_RANGE(0xff1f80, 0xff1fff) AM_WRITE(watchdog_reset16_w)
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AM_RANGE(0xff2000, 0xff2fff) AM_RAM_WRITE(atarigen_666_paletteram_w) AM_BASE_GENERIC(paletteram)
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AM_RANGE(0xff4000, 0xff47ff) AM_WRITE(skullxbo_yscroll_w) AM_BASE_MEMBER(skullxbo_state, m_yscroll)
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AM_RANGE(0xff2000, 0xff2fff) AM_RAM_WRITE_LEGACY(atarigen_666_paletteram_w) AM_SHARE("paletteram")
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AM_RANGE(0xff4000, 0xff47ff) AM_WRITE_LEGACY(skullxbo_yscroll_w) AM_SHARE("yscroll")
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AM_RANGE(0xff4800, 0xff4fff) AM_WRITE(skullxbo_mobwr_w)
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AM_RANGE(0xff6000, 0xff6fff) AM_WRITE(atarigen_eeprom_w) AM_SHARE("eeprom")
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AM_RANGE(0xff5000, 0xff5001) AM_READ(atarigen_sound_r)
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AM_RANGE(0xff6000, 0xff6fff) AM_WRITE_LEGACY(atarigen_eeprom_w) AM_SHARE("eeprom")
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AM_RANGE(0xff5000, 0xff5001) AM_READ_LEGACY(atarigen_sound_r)
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AM_RANGE(0xff5800, 0xff5801) AM_READ_PORT("FF5800")
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AM_RANGE(0xff5802, 0xff5803) AM_READ(special_port1_r)
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AM_RANGE(0xff6000, 0xff6fff) AM_READ(atarigen_eeprom_r)
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AM_RANGE(0xff8000, 0xff9fff) AM_RAM_WRITE(atarigen_playfield_latched_lsb_w) AM_BASE_MEMBER(skullxbo_state, m_playfield)
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AM_RANGE(0xffa000, 0xffbfff) AM_RAM_WRITE(atarigen_playfield_upper_w) AM_BASE_MEMBER(skullxbo_state, m_playfield_upper)
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AM_RANGE(0xffc000, 0xffcf7f) AM_RAM_WRITE(atarigen_alpha_w) AM_BASE_MEMBER(skullxbo_state, m_alpha)
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AM_RANGE(0xffcf80, 0xffcfff) AM_READWRITE(atarimo_0_slipram_r, atarimo_0_slipram_w)
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AM_RANGE(0xffd000, 0xffdfff) AM_READWRITE(atarimo_0_spriteram_r, atarimo_0_spriteram_w)
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AM_RANGE(0xff6000, 0xff6fff) AM_READ_LEGACY(atarigen_eeprom_r)
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AM_RANGE(0xff8000, 0xff9fff) AM_RAM_WRITE_LEGACY(atarigen_playfield_latched_lsb_w) AM_SHARE("playfield")
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AM_RANGE(0xffa000, 0xffbfff) AM_RAM_WRITE_LEGACY(atarigen_playfield_upper_w) AM_SHARE("playfield_up")
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AM_RANGE(0xffc000, 0xffcf7f) AM_RAM_WRITE_LEGACY(atarigen_alpha_w) AM_SHARE("alpha")
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AM_RANGE(0xffcf80, 0xffcfff) AM_READWRITE_LEGACY(atarimo_0_slipram_r, atarimo_0_slipram_w)
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AM_RANGE(0xffd000, 0xffdfff) AM_READWRITE_LEGACY(atarimo_0_spriteram_r, atarimo_0_spriteram_w)
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AM_RANGE(0xffe000, 0xffffff) AM_RAM