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/**********************************************************************
TI TMS9927 and compatible CRT controller emulation
Copyright Nicola Salmoria and the MAME Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************/
#ifndef __TMS9927__
#define __TMS9927__
/* interface */
struct tms9927_interface
{
const char *m_screen_tag; /* screen we are acting on */
int m_hpixels_per_column; /* number of pixels per video memory address */
const char *m_selfload_region; /* name of the region with self-load data */
};
class tms9927_device : public device_t,
public tms9927_interface
{
public:
tms9927_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
tms9927_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock);
~tms9927_device() {}
DECLARE_WRITE8_MEMBER(write);
DECLARE_READ8_MEMBER(read);
int screen_reset();
int upscroll_offset();
int cursor_bounds(rectangle &bounds);
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
virtual void device_stop();
virtual void device_reset();
private:
void state_postload();
void recompute_parameters(int postload);
void generic_access(address_space &space, offs_t offset);
// internal state
screen_device *m_screen;
const UINT8 *m_selfload;
/* live state */
UINT32 m_clock;
UINT8 m_reg[9];
UINT8 m_start_datarow;
UINT8 m_reset;
/* derived state; no need to save */
UINT8 m_valid_config;
UINT16 m_total_hpix, m_total_vpix;
UINT16 m_visible_hpix, m_visible_vpix;
};
extern const device_type TMS9927;
class crt5027_device : public tms9927_device
{
public:
crt5027_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
extern const device_type CRT5027;
class crt5037_device : public tms9927_device
{
public:
crt5037_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
extern const device_type CRT5037;
class crt5057_device : public tms9927_device
{
public:
crt5057_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
extern const device_type CRT5057;
#define MCFG_TMS9927_ADD(_tag, _clock, _config) \
MCFG_DEVICE_ADD(_tag, TMS9927, _clock) \
MCFG_DEVICE_CONFIG(_config)
#define MCFG_TMS9927_RECONFIG(_tag, _clock, _config) \
MCFG_DEVICE_MODIFY(_tag) \
MCFG_DEVICE_CLOCK(_clock) \
MCFG_DEVICE_CONFIG(_config)
#endif
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