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/**********************************************************************
Signetics 2636 video chip
**********************************************************************/
#ifndef __S2636_H__
#define __S2636_H__
#include "devlegcy.h"
#define S2636_IS_PIXEL_DRAWN(p) (((p) & 0x08) ? TRUE : FALSE)
#define S2636_PIXEL_COLOR(p) ((p) & 0x07)
/*************************************
*
* Type definitions
*
*************************************/
typedef struct _s2636_interface s2636_interface;
struct _s2636_interface
{
const char *screen;
int work_ram_size;
int y_offset;
int x_offset;
const char *sound;
};
/*************************************
*
* Device configuration macros
*
*************************************/
class s2636_device : public device_t
{
public:
s2636_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~s2636_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();
private:
// internal state
void *m_token;
};
extern const device_type S2636;
#define MCFG_S2636_ADD(_tag, _interface) \
MCFG_DEVICE_ADD(_tag, S2636, 0) \
MCFG_DEVICE_CONFIG(_interface)
/*************************************
*
* Device I/O functions
*
*************************************/
/* returns a BITMAP_FORMAT_IND16 bitmap the size of the screen
D0-D2 of each pixel is the pixel color
D3 indicates whether the S2636 drew this pixel - 0 = not drawn, 1 = drawn */
bitmap_ind16 &s2636_update( device_t *device, const rectangle &cliprect );
WRITE8_DEVICE_HANDLER( s2636_work_ram_w );
READ8_DEVICE_HANDLER( s2636_work_ram_r );
#endif /* __S2636_H__ */
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