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/***************************************************************************
-= Jaleco Mega System 1 =-
driver by Luca Elia (l.elia@tin.it)
This file contains definitions used across multiple megasys1
and non megasys1 Jaleco games:
* Scrolling layers handling
* Code decryption handling
***************************************************************************/
class megasys1_state : public driver_device
{
public:
megasys1_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) { }
UINT16 *m_spriteram;
UINT16 m_ip_select;
UINT16 m_ip_select_values[5];
UINT8 m_ignore_oki_status;
UINT16 m_protection_val;
int m_bank;
UINT16 *m_scrollram[3];
UINT16 *m_objectram;
UINT16 *m_vregs;
UINT16 *m_ram;
int m_scrollx[3];
int m_scrolly[3];
int m_active_layers;
int m_bits_per_color_code;
int m_scroll_flag[3];
int m_sprite_bank;
int m_screen_flag;
int m_sprite_flag;
int m_8x8_scroll_factor[3];
int m_16x16_scroll_factor[3];
tilemap_t *m_tmap[3];
tilemap_t *m_tilemap[3][2][4];
int m_hardware_type_z;
UINT16 *m_buffer_objectram;
UINT16 *m_buffer2_objectram;
UINT16 *m_buffer_spriteram16;
UINT16 *m_buffer2_spriteram16;
int m_layers_order[16];
};
/*----------- defined in video/megasys1.c -----------*/
VIDEO_START( megasys1 );
SCREEN_UPDATE( megasys1 );
SCREEN_EOF( megasys1 );
PALETTE_INIT( megasys1 );
READ16_HANDLER( megasys1_vregs_C_r );
WRITE16_HANDLER( megasys1_vregs_A_w );
WRITE16_HANDLER( megasys1_vregs_C_w );
WRITE16_HANDLER( megasys1_vregs_D_w );
WRITE16_HANDLER( megasys1_scrollram_0_w );
WRITE16_HANDLER( megasys1_scrollram_1_w );
WRITE16_HANDLER( megasys1_scrollram_2_w );
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