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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/***************************************************************************
h8_timer8.h
H8 8 bits timer
***************************************************************************/
#ifndef __H8_TIMER8_H__
#define __H8_TIMER8_H__
#include "h8.h"
#include "h8_intc.h"
#define MCFG_H8_TIMER8_CHANNEL_ADD( _tag, intc, irq_ca, irq_cb, irq_v, div1, div2, div3, div4, div5, div6 ) \
MCFG_DEVICE_ADD( _tag, H8_TIMER8_CHANNEL, 0 ) \
downcast<h8_timer8_channel_device *>(device)->set_info(intc, irq_ca, irq_cb, irq_v, div1, div2, div3, div4, div5, div6);
#define MCFG_H8H_TIMER8_CHANNEL_ADD( _tag, intc, irq_ca, irq_cb, irq_v, chain, chain_mode, has_adte, has_ice ) \
MCFG_DEVICE_ADD( _tag, H8H_TIMER8_CHANNEL, 0 ) \
downcast<h8h_timer8_channel_device *>(device)->set_info(intc, irq_ca, irq_cb, irq_v, chain, chain_mode, has_adte, has_ice);
class h8_timer8_channel_device : public device_t {
public:
enum {
STOPPED,
CHAIN_A,
CHAIN_OVERFLOW,
INPUT_UP,
INPUT_DOWN,
INPUT_UPDOWN,
DIV
};
h8_timer8_channel_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
h8_timer8_channel_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
void set_info(const char *intc, int irq_ca, int irq_cb, int irq_v, int div1, int div2, int div3, int div4, int div5, int div6);
DECLARE_READ8_MEMBER(tcr_r);
DECLARE_WRITE8_MEMBER(tcr_w);
DECLARE_READ8_MEMBER(tcsr_r);
DECLARE_WRITE8_MEMBER(tcsr_w);
DECLARE_READ8_MEMBER(tcor_r);
DECLARE_WRITE8_MEMBER(tcor_w);
DECLARE_READ8_MEMBER(tcnt_r);
DECLARE_WRITE8_MEMBER(tcnt_w);
UINT64 internal_update(UINT64 current_time);
void set_extra_clock_bit(bool bit);
void chained_timer_overflow();
void chained_timer_tcora();
protected:
enum {
TCR_CKS = 0x07,
TCR_CCLR = 0x18,
TCR_OVIE = 0x20,
TCR_CMIEA = 0x40,
TCR_CMIEB = 0x80,
TCSR_OS = 0x0f,
TCSR_ADTE = 0x10,
TCSR_OVF = 0x20,
TCSR_CMFA = 0x40,
TCSR_CMFB = 0x80
};
enum {
CLEAR_NONE,
CLEAR_A,
CLEAR_B,
CLEAR_EXTERNAL
};
required_device<h8_device> cpu;
h8_timer8_channel_device *chained_timer;
h8_intc_device *intc;
const char *chain_tag, *intc_tag;
int irq_ca, irq_cb, irq_v, chain_type;
int div_tab[6];
UINT8 tcor[2];
UINT8 tcr, tcsr, tcnt;
bool extra_clock_bit, has_adte, has_ice;
int clock_type, clock_divider, clear_type, counter_cycle;
UINT64 last_clock_update, event_time;
virtual void device_start();
virtual void device_reset();
void update_counter(UINT64 cur_time = 0);
void recalc_event(UINT64 cur_time = 0);
void timer_tick();
void update_tcr();
};
class h8h_timer8_channel_device : public h8_timer8_channel_device {
public:
h8h_timer8_channel_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual ~h8h_timer8_channel_device();
void set_info(const char *intc, int irq_ca, int irq_cb, int irq_v, const char *chain_tag, int chain_type, bool has_adte, bool has_ice);
};
extern const device_type H8_TIMER8_CHANNEL;
extern const device_type H8H_TIMER8_CHANNEL;
#endif
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