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// 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
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