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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************
ccpu.h
Core implementation for the portable Cinematronics CPU emulator.
Written by Aaron Giles
Special thanks to Zonn Moore for his detailed documentation.
***************************************************************************/
#ifndef MAME_CPU_CCPU_CCPU_H
#define MAME_CPU_CCPU_CCPU_H
#pragma once
/***************************************************************************
REGISTER ENUMERATION
***************************************************************************/
class ccpu_cpu_device : public cpu_device
{
public:
// register enumeration
// public because the cinemat driver accesses A/P/X/Y through state interace - should there be a proper public interface to read registers?
enum
{
CCPU_PC=1,
CCPU_FLAGS,
CCPU_A,
CCPU_B,
CCPU_I,
CCPU_J,
CCPU_P,
CCPU_X,
CCPU_Y,
CCPU_T
};
typedef device_delegate<void (int16_t, int16_t, int16_t, int16_t, uint8_t)> vector_delegate;
// construction/destruction
ccpu_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// configuration helpers
auto external_func() { return m_external_input.bind(); }
template <typename... T> void set_vector_func(T &&... args) { m_vector_callback.set(std::forward<T>(args)...); }
DECLARE_READ8_MEMBER( read_jmi );
void wdt_timer_trigger();
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// device_execute_interface overrides
virtual uint32_t execute_min_cycles() const noexcept override { return 1; }
virtual uint32_t execute_max_cycles() const noexcept override { return 1; }
virtual uint32_t execute_input_lines() const noexcept override { return 0; }
virtual void execute_run() override;
// device_memory_interface overrides
virtual space_config_vector memory_space_config() const override;
// device_state_interface overrides
virtual void state_string_export(const device_state_entry &entry, std::string &str) const override;
// device_disasm_interface overrides
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
address_space_config m_program_config;
address_space_config m_data_config;
address_space_config m_io_config;
uint16_t m_PC;
uint16_t m_A;
uint16_t m_B;
uint8_t m_I;
uint16_t m_J;
uint8_t m_P;
uint16_t m_X;
uint16_t m_Y;
uint16_t m_T;
uint16_t * m_acc;
uint16_t m_a0flag, m_ncflag, m_cmpacc, m_cmpval;
uint16_t m_miflag, m_nextmiflag, m_nextnextmiflag;
uint16_t m_drflag;
devcb_read8 m_external_input;
vector_delegate m_vector_callback;
uint8_t m_waiting;
uint8_t m_watchdog;
uint8_t m_extinput;
int m_icount;
address_space *m_program;
memory_access_cache<0, 0, ENDIANNESS_BIG> *m_cache;
address_space *m_data;
address_space *m_io;
uint16_t m_flags;
};
DECLARE_DEVICE_TYPE(CCPU, ccpu_cpu_device)
#endif // MAME_CPU_CCPU_CCPU_H
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