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/*
* mathbox.h: math box simulation (Battlezone/Red Baron/Tempest)
*
* Copyright Eric Smith
*
*/
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define MCFG_MATHBOX_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, MATHBOX, 0)
/* ----- device interface ----- */
class mathbox_device : public device_t
{
public:
mathbox_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_WRITE8_MEMBER( go_w );
DECLARE_READ8_MEMBER( status_r );
DECLARE_READ8_MEMBER( lo_r );
DECLARE_READ8_MEMBER( hi_r );
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
virtual void device_reset();
private:
// internal state
/* math box scratch registers */
INT16 m_reg[16];
/* math box result */
INT16 m_result;
};
extern const device_type MATHBOX;
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