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// license:BSD-3-Clause
// copyright-holders:Luca Elia
#ifndef MAME_MACHINE_TMP68301_H
#define MAME_MACHINE_TMP68301_H
#pragma once
#include "cpu/m68000/m68000.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
/* TODO: serial ports, frequency & hook it up with m68k */
// FIXME: M68000 ought to be a parent class, not an external object
#define MCFG_TMP68301_CPU(_tag) \
downcast<tmp68301_device &>(*device).set_cpu_tag("^" _tag);
#define MCFG_TMP68301_IN_PARALLEL_CB(cb) \
devcb = &downcast<tmp68301_device &>(*device).set_in_parallel_callback((DEVCB_##cb));
#define MCFG_TMP68301_OUT_PARALLEL_CB(cb) \
devcb = &downcast<tmp68301_device &>(*device).set_out_parallel_callback((DEVCB_##cb));
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class tmp68301_device : public device_t,
public device_memory_interface
{
public:
tmp68301_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void set_cpu_tag(const char *tag) { m_cpu.set_tag(tag); }
template <class Object> devcb_base &set_in_parallel_callback(Object &&cb) { return m_in_parallel_cb.set_callback(std::forward<Object>(cb)); }
template <class Object> devcb_base &set_out_parallel_callback(Object &&cb) { return m_out_parallel_cb.set_callback(std::forward<Object>(cb)); }
// Hardware Registers
DECLARE_READ16_MEMBER( regs_r );
DECLARE_WRITE16_MEMBER( regs_w );
// Interrupts
void external_interrupt_0();
void external_interrupt_1();
void external_interrupt_2();
IRQ_CALLBACK_MEMBER(irq_callback);
private:
DECLARE_READ16_MEMBER(imr_r);
DECLARE_WRITE16_MEMBER(imr_w);
DECLARE_READ16_MEMBER(iisr_r);
DECLARE_WRITE16_MEMBER(iisr_w);
DECLARE_READ16_MEMBER(scr_r);
DECLARE_WRITE16_MEMBER(scr_w);
DECLARE_READ16_MEMBER(pdr_r);
DECLARE_WRITE16_MEMBER(pdr_w);
DECLARE_READ16_MEMBER(pdir_r);
DECLARE_WRITE16_MEMBER(pdir_w);
DECLARE_READ8_MEMBER(icr_r);
DECLARE_WRITE8_MEMBER(icr_w);
void tmp68301_regs(address_map &map);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual space_config_vector memory_space_config() const override;
private:
TIMER_CALLBACK_MEMBER( timer_callback );
void update_timer( int i );
void update_irq_state(uint16_t cause);
void update_irq_serial(uint16_t cause, uint8_t type);
static constexpr uint16_t EXT_IRQ0 = 1 << 0;
static constexpr uint16_t EXT_IRQ1 = 1 << 1;
static constexpr uint16_t EXT_IRQ2 = 1 << 2;
static constexpr uint16_t SERIAL_IRQ_CH0 = 1 << 4;
static constexpr uint16_t SERIAL_IRQ_CH1 = 1 << 5;
static constexpr uint16_t SERIAL_IRQ_CH2 = 1 << 6;
static constexpr uint16_t PARALLEL_IRQ = 1 << 7;
static constexpr uint16_t TIMER0_IRQ = 1 << 8;
static constexpr uint16_t TIMER1_IRQ = 1 << 9;
static constexpr uint16_t TIMER2_IRQ = 1 << 10;
inline uint16_t read_word(offs_t address);
inline void write_word(offs_t address, uint16_t data);
required_device<m68000_base_device> m_cpu;
devcb_read16 m_in_parallel_cb;
devcb_write16 m_out_parallel_cb;
// internal state
uint16_t m_regs[0x400];
emu_timer *m_tmp68301_timer[3]; // 3 Timers
uint16_t m_irq_vector[8];
uint16_t m_imr;
uint16_t m_iisr;
uint16_t m_scr;
uint16_t m_pdir;
uint16_t m_pdr;
uint8_t m_icr[10];
const address_space_config m_space_config;
};
DECLARE_DEVICE_TYPE(TMP68301, tmp68301_device)
#endif // MAME_MACHINE_TMP68301_H
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