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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol,Carl
/***************************************************************************
AMD AM9519
Universal Interrupt Controller
_____ _____
_CS 1 |* \_/ | 28 VCC
_WR 2 | | 27 C/_D
_RD 3 | | 26 _IACK
DB7 4 | | 25 IREQ7
DB6 5 | | 24 IREQ6
DB5 6 | | 23 IREQ5
DB4 7 | AM9519 | 22 IREQ4
DB3 8 | | 21 IREQ3
DB2 9 | | 20 IREQ2
DB1 10 | | 19 IREQ1
DB0 11 | | 18 IREQ0
_RIP 12 | | 17 GINT
EI 13 | | 16 _EO
GND 14 |_____________| 15 _PAUSE
***************************************************************************/
#ifndef MAME_MACHINE_AM9519_H
#define MAME_MACHINE_AM9519_H
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define MCFG_AM9519_OUT_INT_CB(_devcb) \
devcb = &downcast<am9519_device &>(*device).static_set_out_int_callback(DEVCB_##_devcb);
class am9519_device : public device_t
{
public:
am9519_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
template <class Object> devcb_base &static_set_out_int_callback(Object &&cb) { return m_out_int_func.set_callback(std::forward<Object>(cb)); }
DECLARE_READ8_MEMBER( stat_r );
DECLARE_READ8_MEMBER( data_r );
DECLARE_WRITE8_MEMBER( cmd_w );
DECLARE_WRITE8_MEMBER( data_w );
u32 acknowledge();
DECLARE_WRITE_LINE_MEMBER( ireq0_w ) { set_irq_line(0, state); }
DECLARE_WRITE_LINE_MEMBER( ireq1_w ) { set_irq_line(1, state); }
DECLARE_WRITE_LINE_MEMBER( ireq2_w ) { set_irq_line(2, state); }
DECLARE_WRITE_LINE_MEMBER( ireq3_w ) { set_irq_line(3, state); }
DECLARE_WRITE_LINE_MEMBER( ireq4_w ) { set_irq_line(4, state); }
DECLARE_WRITE_LINE_MEMBER( ireq5_w ) { set_irq_line(5, state); }
DECLARE_WRITE_LINE_MEMBER( ireq6_w ) { set_irq_line(6, state); }
DECLARE_WRITE_LINE_MEMBER( ireq7_w ) { set_irq_line(7, state); }
IRQ_CALLBACK_MEMBER(iack_cb);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
private:
static constexpr device_timer_id TIMER_CHECK_IRQ = 0;
inline void set_timer() { timer_set(attotime::zero, TIMER_CHECK_IRQ); }
void set_irq_line(int irq, int state);
devcb_write_line m_out_int_func;
u8 m_isr;
u8 m_irr;
u8 m_prio;
u8 m_imr;
u8 m_irq_lines;
u8 m_curcnt;
u8 m_mode;
u8 m_cmd;
u8 m_aclear;
u8 m_count[8];
u8 m_resp[8][4];
};
DECLARE_DEVICE_TYPE(AM9519, am9519_device)
#endif // MAME_MACHINE_AM9519_H
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