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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/***************************************************************************
h8_intc.h
H8 interrupt controllers family
***************************************************************************/
#ifndef MAME_CPU_H8_H8_INTC_H
#define MAME_CPU_H8_H8_INTC_H
#pragma once
#include "h8.h"
class h8_intc_device : public device_t {
public:
h8_intc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
int interrupt_taken(int vector);
void internal_interrupt(int vector);
void set_input(int inputnum, int state);
void set_filter(int icr_filter, int ipr_filter);
uint8_t ier_r();
void ier_w(uint8_t data);
uint8_t iscr_r();
void iscr_w(uint8_t data);
protected:
enum { IRQ_LEVEL, IRQ_EDGE, IRQ_DUAL_EDGE };
enum { MAX_VECTORS = 256 };
int irq_vector_base;
int irq_vector_nmi;
required_device<h8_device> cpu;
uint32_t pending_irqs[MAX_VECTORS/32];
int irq_type[8];
bool nmi_input;
uint8_t irq_input;
uint8_t ier;
uint8_t isr;
uint16_t iscr;
int icr_filter, ipr_filter;
h8_intc_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
virtual void device_start() override;
virtual void device_reset() override;
virtual void get_priority(int vect, int &icr_pri, int &ipr_pri) const;
void update_irq_state();
void update_irq_types();
void check_level_irqs(bool force_update = false);
};
class h8h_intc_device : public h8_intc_device {
public:
h8h_intc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
uint8_t isr_r();
void isr_w(uint8_t data);
uint8_t icr_r(offs_t offset);
void icr_w(offs_t offset, uint8_t data);
uint8_t icrc_r();
void icrc_w(uint8_t data);
uint8_t iscrh_r();
void iscrh_w(uint8_t data);
uint8_t iscrl_r();
void iscrl_w(uint8_t data);
protected:
static const int vector_to_slot[];
uint32_t icr;
h8h_intc_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
virtual void device_start() override;
virtual void device_reset() override;
virtual void get_priority(int vect, int &icr_pri, int &ipr_pri) const override;
void update_irq_types();
};
class h8s_intc_device : public h8h_intc_device {
public:
h8s_intc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
uint8_t ipr_r(offs_t offset);
void ipr_w(offs_t offset, uint8_t data);
uint8_t iprk_r();
void iprk_w(uint8_t data);
private:
static const int vector_to_slot[];
uint8_t ipr[11];
virtual void get_priority(int vect, int &icr_pri, int &ipr_pri) const override;
virtual void device_reset() override;
};
DECLARE_DEVICE_TYPE(H8_INTC, h8_intc_device)
DECLARE_DEVICE_TYPE(H8H_INTC, h8h_intc_device)
DECLARE_DEVICE_TYPE(H8S_INTC, h8s_intc_device)
#endif // MAME_CPU_H8_H8_INTC_H
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