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/***************************************************************************
Taito Qix hardware
driver by John Butler, Ed Mueller, Aaron Giles
***************************************************************************/
#include "video/mc6845.h"
#include "machine/6821pia.h"
#define MAIN_CLOCK_OSC 20000000 /* 20 MHz */
#define SLITHER_CLOCK_OSC 21300000 /* 21.3 MHz */
#define SOUND_CLOCK_OSC 7372800 /* 7.3728 MHz */
#define COIN_CLOCK_OSC 4000000 /* 4 MHz */
#define QIX_CHARACTER_CLOCK (20000000/2/16)
#define NUM_PENS (0x100)
class qix_state : public driver_device
{
public:
qix_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) { }
/* machine state */
UINT8 *m_68705_port_out;
UINT8 *m_68705_ddr;
UINT8 m_68705_port_in[3];
UINT8 m_coinctrl;
/* video state */
UINT8 *m_videoram;
UINT8 *m_videoram_address;
UINT8 *m_videoram_mask;
UINT8 *m_paletteram;
UINT8 m_flip;
UINT8 m_palette_bank;
UINT8 m_leds;
UINT8 *m_scanline_latch;
pen_t m_pens[NUM_PENS];
};
/*----------- defined in machine/qix.c -----------*/
extern const pia6821_interface qix_pia_0_intf;
extern const pia6821_interface qix_pia_1_intf;
extern const pia6821_interface qix_pia_2_intf;
extern const pia6821_interface qixmcu_pia_0_intf;
extern const pia6821_interface qixmcu_pia_2_intf;
extern const pia6821_interface slither_pia_1_intf;
extern const pia6821_interface slither_pia_2_intf;
MACHINE_START( qixmcu );
MACHINE_RESET( qix );
WRITE8_HANDLER( zookeep_bankswitch_w );
READ8_HANDLER( qix_data_firq_r );
READ8_HANDLER( qix_data_firq_ack_r );
WRITE8_HANDLER( qix_data_firq_w );
WRITE8_HANDLER( qix_data_firq_ack_w );
READ8_HANDLER( qix_video_firq_r );
READ8_HANDLER( qix_video_firq_ack_r );
WRITE8_HANDLER( qix_video_firq_w );
WRITE8_HANDLER( qix_video_firq_ack_w );
READ8_HANDLER( qix_68705_portA_r );
READ8_HANDLER( qix_68705_portB_r );
READ8_HANDLER( qix_68705_portC_r );
WRITE8_HANDLER( qix_68705_portA_w );
WRITE8_HANDLER( qix_68705_portB_w );
WRITE8_HANDLER( qix_68705_portC_w );
WRITE8_DEVICE_HANDLER( qix_pia_w );
WRITE_LINE_DEVICE_HANDLER( qix_vsync_changed );
/*----------- defined in video/qix.c -----------*/
MACHINE_CONFIG_EXTERN( qix_video );
MACHINE_CONFIG_EXTERN( zookeep_video );
MACHINE_CONFIG_EXTERN( slither_video );
WRITE8_DEVICE_HANDLER( qix_flip_screen_w );
WRITE8_HANDLER( qix_palettebank_w );
/*----------- defined in audio/qix.c -----------*/
MACHINE_CONFIG_EXTERN( qix_audio );
MACHINE_CONFIG_EXTERN( slither_audio );
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