// license:BSD-3-Clause // copyright-holders:Miodrag Milanovic #ifndef __I8008_H__ #define __I8008_H__ //************************************************************************** // ENUMERATIONS //************************************************************************** enum { I8008_PC, I8008_A,I8008_B,I8008_C,I8008_D,I8008_E,I8008_H,I8008_L, I8008_ADDR1,I8008_ADDR2,I8008_ADDR3,I8008_ADDR4,I8008_ADDR5,I8008_ADDR6,I8008_ADDR7,I8008_ADDR8, I8008_GENPC = STATE_GENPC, I8008_GENSP = STATE_GENSP, I8008_GENPCBASE = STATE_GENPCBASE }; //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class i8008_device; // ======================> asap_device class i8008_device : public cpu_device { public: // construction/destruction i8008_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // device_execute_interface overrides virtual UINT32 execute_min_cycles() const override; virtual UINT32 execute_max_cycles() const override; virtual void execute_run() override; virtual void execute_set_input(int inputnum, int state) override; // device_memory_interface overrides virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const override; // device_state_interface overrides virtual void state_import(const device_state_entry &entry) override; virtual void state_export(const device_state_entry &entry) override; virtual void state_string_export(const device_state_entry &entry, std::string &str) const override; // device_disasm_interface overrides virtual UINT32 disasm_min_opcode_bytes() const override; virtual UINT32 disasm_max_opcode_bytes() const override; virtual offs_t disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options) override; virtual void execute_one(int opcode); void push_stack(); void pop_stack(); UINT8 rop(); UINT8 get_reg(UINT8 reg); void set_reg(UINT8 reg, UINT8 val); UINT8 arg(); void update_flags(UINT8 val); UINT8 do_condition(UINT8 val); UINT16 get_addr(); void illegal(UINT8 opcode); void take_interrupt(); void init_tables(void); int m_pc_pos; // PC possition in ADDR int m_icount; // configuration const address_space_config m_program_config; const address_space_config m_io_config; UINT8 m_A,m_B,m_C,m_D,m_E,m_H,m_L; PAIR m_PC; // It is in fact one of ADDR regs PAIR m_ADDR[8]; // Address registers UINT8 m_CF; // Carry flag UINT8 m_ZF; // Zero flag UINT8 m_SF; // Sign flag UINT8 m_PF; // Parity flag UINT8 m_HALT; UINT8 m_flags; // temporary I/O only UINT8 m_irq_state; UINT8 m_PARITY[256]; address_space *m_program; address_space *m_io; direct_read_data *m_direct; }; // device type definition extern const device_type I8008; #endif