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/***************************************************************************
Mitsubishi M50458 OSD chip
***************************************************************************/
#pragma once
#ifndef __M50458DEV_H__
#define __M50458DEV_H__
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_M50458_ADD(_tag,_freq,_screen) \
MCFG_DEVICE_ADD(_tag, M50458,_freq) \
MCFG_VIDEO_SET_SCREEN(_screen)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
enum m50458_state_t
{
OSD_SET_ADDRESS = 0,
OSD_SET_DATA
};
// ======================> m50458_device
class m50458_device : public device_t,
public device_memory_interface,
public device_video_interface
{
public:
// construction/destruction
m50458_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// I/O operations
DECLARE_WRITE_LINE_MEMBER( write_bit );
DECLARE_WRITE_LINE_MEMBER( set_cs_line );
DECLARE_WRITE_LINE_MEMBER( set_clock_line );
DECLARE_WRITE16_MEMBER(vreg_120_w);
DECLARE_WRITE16_MEMBER(vreg_121_w);
DECLARE_WRITE16_MEMBER(vreg_122_w);
DECLARE_WRITE16_MEMBER(vreg_123_w);
DECLARE_WRITE16_MEMBER(vreg_124_w);
DECLARE_WRITE16_MEMBER(vreg_125_w);
DECLARE_WRITE16_MEMBER(vreg_126_w);
DECLARE_WRITE16_MEMBER(vreg_127_w);
UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
virtual const rom_entry *device_rom_region() const;
protected:
// device-level overrides
virtual void device_validity_check(validity_checker &valid) const;
virtual void device_start();
virtual void device_reset();
virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const;
int m_latch;
int m_reset_line;
int m_clock_line;
UINT16 m_current_cmd;
int m_cmd_stream_pos;
UINT16 m_osd_addr;
UINT8 *m_shadow_gfx;
UINT8 m_bg_pen;
UINT8 m_phase;
UINT8 m_scrf,m_scrr;
UINT8 m_space;
UINT8 m_hsz1,m_hsz2,m_hsz3;
UINT8 m_vsz1,m_vsz2,m_vsz3;
UINT8 m_blink;
m50458_state_t m_osd_state;
private:
inline UINT16 read_word(offs_t address);
inline void write_word(offs_t address, UINT16 data);
const address_space_config m_space_config;
};
// device type definition
extern const device_type M50458;
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
#endif
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