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/*****************************************************************************
 *
 * includes/channelf.h
 *
 ****************************************************************************/

#ifndef CHANNELF_H_
#define CHANNELF_H_

#include "emu.h"
#include "cpu/f8/f8.h"
#include "imagedev/cartslot.h"


/* SKR - 2102 RAM chip on carts 10 and 18 I/O ports */
struct r2102_t 
{
	UINT8 d;			/* data bit:inverted logic, but reading/writing cancel out */
	UINT8 r_w;			/* inverted logic: 0 means read, 1 means write */
	UINT8 a[10];		/* addr bits: inverted logic, but reading/writing cancel out */
	UINT16 addr;		/* calculated addr from addr bits */
	UINT8 ram[1024];	/* RAM array */
};


class channelf_state : public driver_device
{
public:
	channelf_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag) { }

	DECLARE_READ8_MEMBER(channelf_port_0_r);
	DECLARE_READ8_MEMBER(channelf_port_1_r);
	DECLARE_READ8_MEMBER(channelf_port_4_r);
	DECLARE_READ8_MEMBER(channelf_port_5_r);
	DECLARE_READ8_MEMBER(channelf_2102A_r);
	DECLARE_READ8_MEMBER(channelf_2102B_r);
	DECLARE_WRITE8_MEMBER(channelf_port_0_w);
	DECLARE_WRITE8_MEMBER(channelf_port_1_w);
	DECLARE_WRITE8_MEMBER(channelf_port_4_w);
	DECLARE_WRITE8_MEMBER(channelf_port_5_w);
	DECLARE_WRITE8_MEMBER(channelf_2102A_w);
	DECLARE_WRITE8_MEMBER(channelf_2102B_w);
	UINT8 *m_p_videoram;
	UINT8 m_latch[6];
	r2102_t m_r2102;
	UINT8 m_val_reg;
	UINT8 m_row_reg;
	UINT8 m_col_reg;
	UINT8 port_read_with_latch(UINT8 ext, UINT8 latch_state);
	virtual void video_start();
	virtual void palette_init();
};


/*----------- defined in video/channelf.c -----------*/



SCREEN_UPDATE_IND16( channelf );


/*----------- defined in audio/channelf.c -----------*/

class channelf_sound_device : public device_t,
                                  public device_sound_interface
{
public:
	channelf_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
	~channelf_sound_device() { global_free(m_token); }

	// access to legacy token
	void *token() const { assert(m_token != NULL); return m_token; }
protected:
	// device-level overrides
	virtual void device_config_complete();
	virtual void device_start();

	// sound stream update overrides
	virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
private:
	// internal state
	void *m_token;
};

extern const device_type CHANNELF;


void channelf_sound_w(device_t *device, int mode);


#endif /* CHANNELF_H_ */