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// license:BSD-3-Clause
// copyright-holders:Sandro Ronco
/**********************************************************************
Hitachi HD61700
**********************************************************************/
#ifndef MAME_CPU_HD61700_HD61700_H
#define MAME_CPU_HD61700_HD61700_H
#pragma once
//**************************************************************************
// DEFINITIONS
//**************************************************************************
// input lines
enum
{
HD61700_ON_INT,
HD61700_TIMER_INT,
HD61700_INT2,
HD61700_KEY_INT,
HD61700_INT1,
HD61700_SW
};
// ======================> hd61700_cpu_device
class hd61700_cpu_device : public cpu_device
{
public:
// construction/destruction
hd61700_cpu_device(const machine_config &mconfig, const char *_tag, device_t *_owner, const XTAL &_clock);
auto lcd_ctrl() { return m_lcd_ctrl_cb.bind(); }
auto lcd_write() { return m_lcd_write_cb.bind(); }
auto lcd_read() { return m_lcd_read_cb.bind(); }
auto kb_write() { return m_kb_write_cb.bind(); }
auto kb_read() { return m_kb_read_cb.bind(); }
auto port_write() { return m_port_write_cb.bind(); }
auto port_read() { return m_port_read_cb.bind(); }
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 52; }
virtual uint32_t execute_input_lines() const noexcept override { return 6; }
virtual void execute_run() override;
virtual void execute_set_input(int inputnum, int state) override;
// device_state_interface overrides
virtual void state_import(const device_state_entry &entry) override;
virtual void state_string_export(const device_state_entry &entry, std::string &str) const override;
// device_memory_interface overrides
virtual space_config_vector memory_space_config() const override;
// device_disasm_interface overrides
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
// interrupts
bool check_irqs();
// helpers
void set_pc(int32_t new_pc);
uint8_t read_op();
uint8_t mem_readbyte(uint8_t segment, uint16_t offset);
void mem_writebyte(uint8_t segment, uint16_t offset, uint8_t data);
uint32_t make_18bit_addr(uint8_t segment, uint16_t offset);
int check_cond( uint32_t op );
void push(uint16_t &offset, uint8_t data);
uint8_t pop(uint16_t &offset);
uint8_t make_logic(uint8_t type, uint8_t d1, uint8_t d2);
void check_optional_jr(uint8_t arg);
uint8_t get_sir_im8(uint8_t arg);
uint8_t get_sir_im8(uint8_t arg, uint8_t arg1);
int get_sign_mreg(uint8_t op1);
int get_sign_im8(uint8_t op1);
int get_im_7(uint8_t data);
uint16_t make_bcd_sub(uint8_t arg1, uint8_t arg2);
uint16_t make_bcd_add(uint8_t arg1, uint8_t arg2);
TIMER_CALLBACK_MEMBER(second_tick);
// registers
enum
{
HD61700_PC=1, HD61700_F, HD61700_SX, HD61700_SY, HD61700_SZ, HD61700_PE, HD61700_PD,
HD61700_IB, HD61700_UA, HD61700_IA, HD61700_IE, HD61700_TM, HD61700_IX,
HD61700_IY, HD61700_IZ, HD61700_US, HD61700_SS, HD61700_KY, HD61700_MAINREG
};
// internal state
address_space_config m_program_config;
emu_timer *m_sec_timer;
offs_t m_ppc;
offs_t m_curpc;
uint16_t m_pc;
uint8_t m_flags;
uint32_t m_fetch_addr;
uint8_t m_regsir[3]; // 5bit register (sx, sy, sz)
uint8_t m_reg8bit[8]; // 8bit register (pe, pd, ib, ua, ia, ie, tm, tm)
uint16_t m_reg16bit[8]; // 16bit register (ix, iy, iz, us, ss, ky, ky, ky)
uint8_t m_regmain[0x20]; // main registers
uint8_t m_irq_status;
uint8_t m_state;
uint8_t prev_ua;
int m_lines_status[6];
int m_icount;
address_space *m_program;
devcb_write8 m_lcd_ctrl_cb; //lcd control
devcb_read8 m_lcd_read_cb; //lcd data read
devcb_write8 m_lcd_write_cb; //lcd data write
devcb_read16 m_kb_read_cb; //keyboard matrix read
devcb_write8 m_kb_write_cb; //keyboard matrix write
devcb_read8 m_port_read_cb; //8 bit port read
devcb_write8 m_port_write_cb; //8 bit port write
// flag definitions
static constexpr int FLAG_Z = 0x80;
static constexpr int FLAG_C = 0x40;
static constexpr int FLAG_LZ = 0x20;
static constexpr int FLAG_UZ = 0x10;
static constexpr int FLAG_SW = 0x08;
static constexpr int FLAG_APO = 0x04;
};
DECLARE_DEVICE_TYPE(HD61700, hd61700_cpu_device)
#endif // MAME_CPU_HD61700_HD61700_H
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