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/***************************************************************************
INTEL 8275 Programmable CRT Controller implementation
25-05-2008 Initial implementation [Miodrag Milanovic]
Copyright MESS team.
Visit http://mamedev.org for licensing and usage restrictions.
***************************************************************************/
#ifndef __I8275_VIDEO__
#define __I8275_VIDEO__
#include "devcb.h"
/***************************************************************************
MACROS
***************************************************************************/
class i8275_device : public device_t
{
public:
i8275_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~i8275_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();
virtual void device_reset();
private:
// internal state
void *m_token;
};
extern const device_type I8275;
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
typedef void (*i8275_display_pixels_func)(device_t *device, int x, int y, UINT8 linecount, UINT8 charcode, UINT8 lineattr, UINT8 lten, UINT8 rvv, UINT8 vsp, UINT8 gpa, UINT8 hlgt);
#define I8275_DISPLAY_PIXELS(name) void name(device_t *device, int x, int y, UINT8 linecount, UINT8 charcode, UINT8 lineattr, UINT8 lten, UINT8 rvv, UINT8 vsp, UINT8 gpa, UINT8 hlgt)
/* interface */
struct i8275_interface
{
const char *screen_tag; /* screen we are acting on */
int width; /* char width in pixels */
int char_delay; /* delay of display char */
devcb_write_line out_drq_func;
devcb_write_line out_irq_func;
i8275_display_pixels_func display_pixels;
};
/***************************************************************************
FUNCTION PROTOTYPES
***************************************************************************/
/* register access */
DECLARE_READ8_DEVICE_HANDLER ( i8275_r );
DECLARE_WRITE8_DEVICE_HANDLER ( i8275_w );
/* updates the screen */
void i8275_update(device_t *device, bitmap_ind16 &bitmap, const rectangle &cliprect);
DECLARE_WRITE8_DEVICE_HANDLER( i8275_dack_w );
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define MCFG_I8275_ADD(_tag, _intrf) \
MCFG_DEVICE_ADD(_tag, I8275, 0) \
MCFG_DEVICE_CONFIG(_intrf)
#endif
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