// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/******************************************************************************
*
* Sony PlayStation 2 IOP timer device skeleton
*
* To Do:
* Everything
*
*/
#ifndef MAME_MACHINE_IOPTIMER_H
#define MAME_MACHINE_IOPTIMER_H
#pragma once
class iop_timer_device : public device_t
{
public:
iop_timer_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
auto irq() { return m_int_cb.bind(); }
uint32_t read(offs_t offset, uint32_t mem_mask = ~0);
void write(offs_t offset, uint32_t data, uint32_t mem_mask = ~0);
protected:
enum timer_ctrl_mask : uint32_t
{
CTRL_GATE = (1 << 0),
CTRL_GATM = (3 << 1),
CTRL_ZRET = (1 << 3),
CTRL_CMPE = (1 << 4),
CTRL_OVFE = (1 << 5),
CTRL_REPI = (1 << 6),
CTRL_TOGI = (1 << 7),
CTRL_INTE = (1 << 10),
CTRL_CMPF = (1 << 11),
CTRL_OVFF = (1 << 12),
};
enum timer_gate_mode : uint32_t
{
GATM_LOW = 0,
GATM_RISING,
GATM_FALLING,
GATM_BOTH
};
virtual void device_start() override;
virtual void device_reset() override;
TIMER_CALLBACK_MEMBER(compare);
TIMER_CALLBACK_MEMBER(overflow);
void set_ctrl(uint32_t data);
void update_gate();
void update_interrupts();
void update_compare_timer();
void update_overflow_timer();
void update_count();
emu_timer *m_compare_timer;
emu_timer *m_overflow_timer;
uint32_t m_ctrl;
attotime m_last_update_time;
attotime m_elapsed_time;
bool m_zero_return;
uint32_t m_count;
uint32_t m_compare;
bool m_gate_enable;
timer_gate_mode m_gate_mode;
bool m_cmp_int_enabled;
bool m_cmp_int;
bool m_ovf_int_enabled;
bool m_ovf_int;
bool m_repeat_int;
bool m_toggle_int;
bool m_ienable;
devcb_write_line m_int_cb;
};
DECLARE_DEVICE_TYPE(SONYIOP_TIMER, iop_timer_device)
#endif // MAME_MACHINE_IOPTIMER_H