text: // license:BSD-3-Clause
  // copyright-holders:David Haywood
  /*************************************************************************
  
      Simple 156 based board
  
  *************************************************************************/
  
  #include "machine/eepromser.h"
  #include "sound/okim6295.h"
  #include "video/deco16ic.h"
  #include "video/decospr.h"
  
  class simpl156_state : public driver_device
  {
  public:
  	simpl156_state(const machine_config &mconfig, device_type type, const char *tag)
  		: driver_device(mconfig, type, tag),
  		m_maincpu(*this, "maincpu"),
  		m_deco_tilegen1(*this, "tilegen1"),
  		m_eeprom(*this, "eeprom"),
  		m_okimusic(*this, "okimusic") ,
  		m_mainram(*this, "mainram"),
  		m_systemram(*this, "systemram"),
  		m_sprgen(*this, "spritegen"),
  		m_palette(*this, "palette") { }
  
  	/* devices */
  	required_device<cpu_device> m_maincpu;
  	required_device<deco16ic_device> m_deco_tilegen1;
  	required_device<eeprom_serial_93cxx_device> m_eeprom;
  	required_device<okim6295_device> m_okimusic;
  	/* memory pointers */
  	std::unique_ptr<uint16_t[]>  m_pf1_rowscroll;
  	std::unique_ptr<uint16_t[]>  m_pf2_rowscroll;
  	required_shared_ptr<uint32_t> m_mainram;
  	required_shared_ptr<uint32_t> m_systemram;
  	optional_device<decospr_device> m_sprgen;
  	required_device<palette_device> m_palette;
  	std::unique_ptr<uint16_t[]> m_spriteram;
  	size_t m_spriteram_size;
  	DECO16IC_BANK_CB_MEMBER(bank_callback);
  	DECOSPR_PRIORITY_CB_MEMBER(pri_callback);
  
  	DECLARE_WRITE32_MEMBER(simpl156_eeprom_w);
  	DECLARE_READ32_MEMBER(simpl156_spriteram_r);
  	DECLARE_WRITE32_MEMBER(simpl156_spriteram_w);
  	DECLARE_READ32_MEMBER(simpl156_mainram_r);
  	DECLARE_WRITE32_MEMBER(simpl156_mainram_w);
  	DECLARE_READ32_MEMBER(simpl156_pf1_rowscroll_r);
  	DECLARE_WRITE32_MEMBER(simpl156_pf1_rowscroll_w);
  	DECLARE_READ32_MEMBER(simpl156_pf2_rowscroll_r);
  	DECLARE_WRITE32_MEMBER(simpl156_pf2_rowscroll_w);
  	DECLARE_READ32_MEMBER(joemacr_speedup_r);
  	DECLARE_READ32_MEMBER(chainrec_speedup_r);
  	DECLARE_READ32_MEMBER(prtytime_speedup_r);
  	DECLARE_READ32_MEMBER(charlien_speedup_r);
  	DECLARE_READ32_MEMBER(osman_speedup_r);
  	DECLARE_DRIVER_INIT(simpl156);
  	DECLARE_DRIVER_INIT(joemacr);
  	DECLARE_DRIVER_INIT(charlien);
  	DECLARE_DRIVER_INIT(prtytime);
  	DECLARE_DRIVER_INIT(osman);
  	DECLARE_DRIVER_INIT(chainrec);
  	virtual void video_start() override;
  	uint32_t screen_update_simpl156(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
  	INTERRUPT_GEN_MEMBER(simpl156_vbl_interrupt);
  	void joemacr(machine_config &config);
  	void magdrop(machine_config &config);
  	void chainrec(machine_config &config);
  	void mitchell156(machine_config &config);
  	void magdropp(machine_config &config);
  	void chainrec_map(address_map &map);
  	void joemacr_map(address_map &map);
  	void magdrop_map(address_map &map);
  	void magdropp_map(address_map &map);
  	void mitchell156_map(address_map &map);
  };
  