// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/*************************************************************************
Jaleco Exerion
*************************************************************************/
#include "screen.h"
#define EXERION_MASTER_CLOCK (XTAL(19'968'000)) /* verified on pcb */
#define EXERION_CPU_CLOCK (EXERION_MASTER_CLOCK / 6)
#define EXERION_AY8910_CLOCK (EXERION_CPU_CLOCK / 2)
#define EXERION_PIXEL_CLOCK (EXERION_MASTER_CLOCK / 3)
#define EXERION_HCOUNT_START (0x58)
#define EXERION_HTOTAL (512-EXERION_HCOUNT_START)
#define EXERION_HBEND (12*8) /* ?? */
#define EXERION_HBSTART (52*8) /* ?? */
#define EXERION_VTOTAL (256)
#define EXERION_VBEND (16)
#define EXERION_VBSTART (240)
class exerion_state : public driver_device
{
public:
exerion_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_main_ram(*this, "main_ram"),
m_videoram(*this, "videoram"),
m_spriteram(*this, "spriteram"),
m_maincpu(*this, "maincpu"),
m_gfxdecode(*this, "gfxdecode"),
m_screen(*this, "screen"),
m_palette(*this, "palette") { }
/* memory pointers */
required_shared_ptr<uint8_t> m_main_ram;
required_shared_ptr<uint8_t> m_videoram;
required_shared_ptr<uint8_t> m_spriteram;
/* video-related */
uint8_t m_cocktail_flip;
uint8_t m_char_palette;
uint8_t m_sprite_palette;
uint8_t m_char_bank;
std::unique_ptr<uint16_t[]> m_background_gfx[4];
uint8_t *m_background_mixer;
uint8_t m_background_latches[13];
/* protection? */
uint8_t m_porta;
uint8_t m_portb;
/* devices */
required_device<cpu_device> m_maincpu;
required_device<gfxdecode_device> m_gfxdecode;
required_device<screen_device> m_screen;
required_device<palette_device> m_palette;
DECLARE_READ8_MEMBER(exerion_protection_r);
DECLARE_WRITE8_MEMBER(exerion_videoreg_w);
DECLARE_WRITE8_MEMBER(exerion_video_latch_w);
DECLARE_READ8_MEMBER(exerion_video_timing_r);
DECLARE_CUSTOM_INPUT_MEMBER(exerion_controls_r);
DECLARE_INPUT_CHANGED_MEMBER(coin_inserted);
DECLARE_READ8_MEMBER(exerion_porta_r);
DECLARE_WRITE8_MEMBER(exerion_portb_w);
void init_exerion();
void init_exerionb();
void init_irion();
virtual void machine_start() override;
virtual void machine_reset() override;
virtual void video_start() override;
DECLARE_PALETTE_INIT(exerion);
uint32_t screen_update_exerion(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
void draw_background( bitmap_ind16 &bitmap, const rectangle &cliprect);
void exerion(machine_config &config);
void irion(machine_config &config);
void main_map(address_map &map);
void sub_map(address_map &map);
};