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/***************************************************************************
Z80 CTC (Z8430) implementation
Copyright Nicola Salmoria and the MAME Team.
Visit http://mamedev.org for licensing and usage restrictions.
***************************************************************************/
/***************************************************************************
CONSTANTS
***************************************************************************/
#define MAX_CTC 2
#define NOTIMER_0 (1<<0)
#define NOTIMER_1 (1<<1)
#define NOTIMER_2 (1<<2)
#define NOTIMER_3 (1<<3)
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
typedef struct
{
int baseclock; /* timer clock */
int notimer; /* timer disablers */
void (*intr)(running_machine *machine, int which); /* callback when change interrupt status */
write8_machine_func zc0; /* ZC/TO0 callback */
write8_machine_func zc1; /* ZC/TO1 callback */
write8_machine_func zc2; /* ZC/TO2 callback */
} z80ctc_interface;
/***************************************************************************
INITIALIZATION/CONFIGURATION
***************************************************************************/
void z80ctc_init(int which, z80ctc_interface *intf);
void z80ctc_reset(int which);
attotime z80ctc_getperiod (int which, int ch);
/***************************************************************************
WRITE HANDLERS
***************************************************************************/
void z80ctc_w(int which, int ch, UINT8 data);
WRITE8_HANDLER( z80ctc_0_w );
WRITE8_HANDLER( z80ctc_1_w );
/***************************************************************************
READ HANDLERS
***************************************************************************/
UINT8 z80ctc_r(int which, int ch);
READ8_HANDLER( z80ctc_0_r );
READ8_HANDLER( z80ctc_1_r );
/***************************************************************************
EXTERNAL TRIGGERS
***************************************************************************/
void z80ctc_trg_w(running_machine *machine, int which, int trg, UINT8 data);
WRITE8_HANDLER( z80ctc_0_trg0_w );
WRITE8_HANDLER( z80ctc_0_trg1_w );
WRITE8_HANDLER( z80ctc_0_trg2_w );
WRITE8_HANDLER( z80ctc_0_trg3_w );
WRITE8_HANDLER( z80ctc_1_trg0_w );
WRITE8_HANDLER( z80ctc_1_trg1_w );
WRITE8_HANDLER( z80ctc_1_trg2_w );
WRITE8_HANDLER( z80ctc_1_trg3_w );
/***************************************************************************
DAISY CHAIN INTERFACE
***************************************************************************/
int z80ctc_irq_state(int which);
int z80ctc_irq_ack(int which);
void z80ctc_irq_reti(int which);
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