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// license:BSD-3-Clause
// copyright-holders:AJR
#ifndef MAME_DEVICES_MACHINE_APPLEPIC_H
#define MAME_DEVICES_MACHINE_APPLEPIC_H
#pragma once
#include "cpu/m6502/r65c02.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> applepic_device
class applepic_device : public device_t
{
public:
// construction/destruction
applepic_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
// callback configuration
auto prd_callback() { return m_prd_callback.bind(); }
auto pwr_callback() { return m_pwr_callback.bind(); }
auto hint_callback() { return m_hint_callback.bind(); }
auto gpin_callback() { return m_gpin_callback.bind(); }
auto gpout0_callback() { return m_gpout_callback[0].bind(); }
auto gpout1_callback() { return m_gpout_callback[1].bind(); }
// host interface
u8 host_r(offs_t offset);
void host_w(offs_t offset, u8 data);
// peripheral device requests
void pint_w(int state);
void reqa_w(int state);
void reqb_w(int state);
protected:
// device-level overrides
virtual void device_add_mconfig(machine_config &config) override;
virtual void device_resolve_objects() override;
virtual void device_start() override;
virtual void device_reset() override;
private:
static const std::string_view s_interrupt_names[8];
struct dma_channel
{
u8 control;
u16 map;
u16 tc;
};
u8 timer_r(offs_t offset);
void timer_w(offs_t offset, u8 data);
u16 get_timer_count() const;
TIMER_CALLBACK_MEMBER(timer1_callback);
u8 dma_channel_r(offs_t offset);
void dma_channel_w(offs_t offset, u8 data);
u8 scc_control_r();
void scc_control_w(u8 data);
u8 io_control_r();
void io_control_w(u8 data);
u8 timer_dpll_control_r();
void timer_dpll_control_w(u8 data);
u8 int_mask_r();
void int_mask_w(u8 data);
u8 int_reg_r();
void int_reg_w(u8 data);
void set_interrupt(int which);
void reset_interrupt(int which);
u8 host_reg_r();
void host_reg_w(u8 data);
u8 device_reg_r(offs_t offset);
void device_reg_w(offs_t offset, u8 data);
void internal_map(address_map &map);
// internal CPU
required_device<r65c02_device> m_iopcpu;
// callbacks for peripheral and host
devcb_read8 m_prd_callback;
devcb_write8 m_pwr_callback;
devcb_write_line m_hint_callback;
devcb_read8 m_gpin_callback;
devcb_write_line::array<2> m_gpout_callback;
// internal state
emu_timer *m_timer1;
attotime m_timer_last_expired;
u16 m_ram_address;
u8 m_status_reg;
u16 m_timer_latch;
dma_channel m_dma_channel[2];
u8 m_scc_control;
u8 m_io_control;
u8 m_timer_dpll_control;
u8 m_int_mask;
u8 m_int_reg;
};
// device type declaration
DECLARE_DEVICE_TYPE(APPLEPIC, applepic_device)
#endif // MAME_DEVICES_MACHINE_APPLEPIC_H
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