// license:BSD-3-Clause
// copyright-holders:Chris Hardy
/*************************************************************************
Megazone
*************************************************************************/
class megazone_state : public driver_device
{
public:
megazone_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_scrolly(*this, "scrolly"),
m_scrollx(*this, "scrollx"),
m_videoram(*this, "videoram"),
m_videoram2(*this, "videoram2"),
m_colorram(*this, "colorram"),
m_colorram2(*this, "colorram2"),
m_spriteram(*this, "spriteram"),
m_maincpu(*this, "maincpu"),
m_audiocpu(*this, "audiocpu"),
m_daccpu(*this, "daccpu"),
m_gfxdecode(*this, "gfxdecode"),
m_palette(*this, "palette") { }
/* memory pointers */
required_shared_ptr<uint8_t> m_scrolly;
required_shared_ptr<uint8_t> m_scrollx;
required_shared_ptr<uint8_t> m_videoram;
required_shared_ptr<uint8_t> m_videoram2;
required_shared_ptr<uint8_t> m_colorram;
required_shared_ptr<uint8_t> m_colorram2;
required_shared_ptr<uint8_t> m_spriteram;
/* video-related */
std::unique_ptr<bitmap_ind16> m_tmpbitmap;
int m_flipscreen;
/* misc */
int m_i8039_status;
/* devices */
required_device<cpu_device> m_maincpu;
required_device<cpu_device> m_audiocpu;
required_device<cpu_device> m_daccpu;
required_device<gfxdecode_device> m_gfxdecode;
required_device<palette_device> m_palette;
uint8_t m_irq_mask;
DECLARE_WRITE8_MEMBER(megazone_i8039_irq_w);
DECLARE_WRITE8_MEMBER(i8039_irqen_and_status_w);
DECLARE_WRITE_LINE_MEMBER(coin_counter_1_w);
DECLARE_WRITE_LINE_MEMBER(coin_counter_2_w);
DECLARE_WRITE_LINE_MEMBER(irq_mask_w);
DECLARE_WRITE_LINE_MEMBER(flipscreen_w);
DECLARE_READ8_MEMBER(megazone_port_a_r);
DECLARE_WRITE8_MEMBER(megazone_port_b_w);
virtual void machine_start() override;
virtual void machine_reset() override;
virtual void video_start() override;
DECLARE_PALETTE_INIT(megazone);
uint32_t screen_update_megazone(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
DECLARE_WRITE_LINE_MEMBER(vblank_irq);
void megazone(machine_config &config);
void megazone_i8039_io_map(address_map &map);
void megazone_i8039_map(address_map &map);
void megazone_map(address_map &map);
void megazone_sound_io_map(address_map &map);
void megazone_sound_map(address_map &map);
};