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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/***************************************************************************
am2910.h
AMD Am2910 Microprogram Controller emulation
***************************************************************************/
#ifndef MAME_MACHINE_AM2910_AM2910_H
#define MAME_MACHINE_AM2910_AM2910_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> am2910_device
class am2910_device : public device_t
{
public:
// construction/destruction
am2910_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void cc_w(int state); // !CC
void ccen_w(int state); // !CCEN
void ci_w(int state); // CI
void rld_w(int state); // !RLD
void cp_w(int state); // CP
void d_w(uint16_t data);
void i_w(uint8_t data);
auto y() { return m_y.bind(); }
auto pl() { return m_pl.bind(); }
auto full() { return m_full.bind(); }
auto map() { return m_map.bind(); }
auto vect() { return m_vect.bind(); }
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
TIMER_CALLBACK_MEMBER(clock_tick);
emu_timer *m_execute_timer;
void execute();
bool test_pass();
void push(uint16_t value);
void pop();
void update_source();
// internal state
uint16_t m_pc;
uint16_t m_r;
uint8_t m_sp;
uint16_t m_stack[5];
// inputs
int m_cc;
int m_ccen;
int m_ci;
int m_rld;
int m_cp;
uint16_t m_d;
uint8_t m_i;
// outputs
devcb_write16 m_y;
devcb_write_line m_full;
devcb_write_line m_pl;
devcb_write_line m_map;
devcb_write_line m_vect;
};
// device type definition
DECLARE_DEVICE_TYPE(AM2910, am2910_device)
#endif // MAME_MACHINE_AM2910_AM2910_H
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