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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/***************************************************************************
h8_watchdog.h
H8 watchdog/timer
***************************************************************************/
#ifndef MAME_CPU_H8_H8_WATCHDOG_H
#define MAME_CPU_H8_H8_WATCHDOG_H
#pragma once
#include "h8.h"
#include "h8_intc.h"
class h8_watchdog_device : public device_t {
public:
enum { B, H, S };
h8_watchdog_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
template<typename T, typename U> h8_watchdog_device(const machine_config &mconfig, const char *tag, device_t *owner, T &&cpu, U &&intc, int irq, int type)
: h8_watchdog_device(mconfig, tag, owner, 0)
{
m_cpu.set_tag(std::forward<T>(cpu));
m_intc.set_tag(std::forward<U>(intc));
m_irq = irq;
m_type = type;
}
uint64_t internal_update(uint64_t current_time);
uint16_t wd_r();
void wd_w(offs_t offset, uint16_t data, uint16_t mem_mask = ~0);
uint16_t rst_r();
void rst_w(uint16_t data);
protected:
virtual void device_start() override;
virtual void device_reset() override;
private:
enum {
TCSR_CKS = 0x07,
TCSR_NMI = 0x08,
TCSR_TME = 0x20,
TCSR_WT = 0x40,
TCSR_OVF = 0x80,
RST_RSTS = 0x20,
RST_RSTE = 0x40,
RST_RSTEO = 0x40,
RST_WRST = 0x80
};
static const int div_bh[8];
static const int div_s[8];
required_device<h8_device> m_cpu;
required_device<h8_intc_device> m_intc;
int m_irq;
int m_type;
uint8_t m_tcnt, m_tcsr, m_rst;
uint64_t m_tcnt_cycle_base;
void tcnt_update(uint64_t current_time = 0);
};
DECLARE_DEVICE_TYPE(H8_WATCHDOG, h8_watchdog_device)
#endif // MAME_CPU_H8_H8_WATCHDOG_H
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