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/*************************************************************************
Atari System 1 hardware
*************************************************************************/
#include "machine/atarigen.h"
class atarisy1_state : public atarigen_state
{
public:
atarisy1_state(const machine_config &mconfig, device_type type, const char *tag)
: atarigen_state(mconfig, type, tag),
m_bankselect(*this, "bankselect"),
m_joystick_timer(*this, "joystick_timer"),
m_yscroll_reset_timer(*this, "yreset_timer"),
m_scanline_timer(*this, "scan_timer"),
m_int3off_timer(*this, "int3off_timer") { }
required_shared_ptr<UINT16> m_bankselect;
UINT8 m_joystick_type;
UINT8 m_trackball_type;
required_device<timer_device> m_joystick_timer;
UINT8 m_joystick_int;
UINT8 m_joystick_int_enable;
UINT8 m_joystick_value;
/* playfield parameters */
UINT16 m_playfield_lookup[256];
UINT8 m_playfield_tile_bank;
UINT16 m_playfield_priority_pens;
required_device<timer_device> m_yscroll_reset_timer;
/* INT3 tracking */
int m_next_timer_scanline;
required_device<timer_device> m_scanline_timer;
required_device<timer_device> m_int3off_timer;
/* graphics bank tracking */
UINT8 m_bank_gfx[3][8];
UINT8 m_bank_color_shift[MAX_GFX_ELEMENTS];
UINT8 m_cur[2][2];
DECLARE_READ16_MEMBER(joystick_r);
DECLARE_WRITE16_MEMBER(joystick_w);
DECLARE_READ16_MEMBER(trakball_r);
DECLARE_READ16_MEMBER(port4_r);
DECLARE_READ8_MEMBER(switch_6502_r);
DECLARE_WRITE8_MEMBER(led_w);
DECLARE_WRITE8_MEMBER(via_pa_w);
DECLARE_READ8_MEMBER(via_pa_r);
DECLARE_WRITE8_MEMBER(via_pb_w);
DECLARE_READ8_MEMBER(via_pb_r);
DECLARE_DRIVER_INIT(roadb110);
DECLARE_DRIVER_INIT(roadb109);
DECLARE_DRIVER_INIT(peterpak);
DECLARE_DRIVER_INIT(marble);
DECLARE_DRIVER_INIT(roadrunn);
DECLARE_DRIVER_INIT(indytemp);
TILE_GET_INFO_MEMBER(get_alpha_tile_info);
TILE_GET_INFO_MEMBER(get_playfield_tile_info);
DECLARE_MACHINE_START(atarisy1);
DECLARE_MACHINE_RESET(atarisy1);
DECLARE_VIDEO_START(atarisy1);
};
/*----------- defined in video/atarisy1.c -----------*/
TIMER_DEVICE_CALLBACK( atarisy1_int3_callback );
TIMER_DEVICE_CALLBACK( atarisy1_int3off_callback );
TIMER_DEVICE_CALLBACK( atarisy1_reset_yscroll_callback );
READ16_HANDLER( atarisy1_int3state_r );
WRITE16_HANDLER( atarisy1_spriteram_w );
WRITE16_HANDLER( atarisy1_bankselect_w );
WRITE16_HANDLER( atarisy1_xscroll_w );
WRITE16_HANDLER( atarisy1_yscroll_w );
WRITE16_HANDLER( atarisy1_priority_w );
SCREEN_UPDATE_IND16( atarisy1 );
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