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/***************************************************************************
Motorola 6840 (PTM)
Programmable Timer Module
***************************************************************************/
#ifndef __6840PTM_H__
#define __6840PTM_H__
#include "devlegcy.h"
/***************************************************************************
MACROS / CONSTANTS
***************************************************************************/
DECLARE_LEGACY_DEVICE(PTM6840, ptm6840);
#define MDRV_PTM6840_ADD(_tag, _config) \
MDRV_DEVICE_ADD(_tag, PTM6840, 0) \
MDRV_DEVICE_CONFIG(_config)
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
typedef struct _ptm6840_interface ptm6840_interface;
struct _ptm6840_interface
{
double internal_clock;
double external_clock[3];
devcb_write8 out_func[3]; // function to call when output[idx] changes
devcb_write_line irq_func; // function called if IRQ line changes
};
/***************************************************************************
PROTOTYPES
***************************************************************************/
int ptm6840_get_status( running_device *device, int clock ); // get whether timer is enabled
int ptm6840_get_irq( running_device *device ); // get IRQ state
UINT16 ptm6840_get_count( running_device *device, int counter );// get counter value
void ptm6840_set_ext_clock( running_device *device, int counter, double clock ); // set clock frequency
int ptm6840_get_ext_clock( running_device *device, int counter );// get clock frequency
WRITE8_DEVICE_HANDLER( ptm6840_set_g1 ); // set gate1 state
WRITE8_DEVICE_HANDLER( ptm6840_set_g2 ); // set gate2 state
WRITE8_DEVICE_HANDLER( ptm6840_set_g3 ); // set gate3 state
WRITE8_DEVICE_HANDLER( ptm6840_set_c1 ); // set clock1 state
WRITE8_DEVICE_HANDLER( ptm6840_set_c2 ); // set clock2 state
WRITE8_DEVICE_HANDLER( ptm6840_set_c3 ); // set clock3 state
WRITE8_DEVICE_HANDLER( ptm6840_write );
READ8_DEVICE_HANDLER( ptm6840_read );
#endif /* __6840PTM_H__ */
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