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// license:BSD-3-Clause
// copyright-holders:AJR
/**********************************************************************
NEC 78K/II series 8-bit single-chip microcontrollers
**********************************************************************/
#ifndef MAME_CPU_UPD78K_UPD78K2_H
#define MAME_CPU_UPD78K_UPD78K2_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> upd78k2_device
class upd78k2_device : public cpu_device
{
public:
enum {
UPD78K2_PC,
UPD78K2_PSW, UPD78K2_RBS, UPD78K2_SP,
UPD78K2_AX, UPD78K2_BC,
UPD78K2_DE, UPD78K2_HL,
UPD78K2_X, UPD78K2_A, UPD78K2_C, UPD78K2_B,
UPD78K2_E, UPD78K2_D, UPD78K2_L, UPD78K2_H
};
// TODO: callbacks and configuration thereof
protected:
upd78k2_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, int iram_bits, address_map_constructor mem_map, address_map_constructor sfr_map);
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// device_execute_interface overrides
virtual void execute_run() override;
virtual u64 execute_clocks_to_cycles(u64 clocks) const noexcept override { return (clocks + 2 - 1) / 2; }
virtual u64 execute_cycles_to_clocks(u64 cycles) const noexcept override { return (cycles * 2); }
// 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;
private:
// internal memory map
void iram_map(address_map &map);
// internal helpers
inline u8 register_base() const noexcept;
// address spaces, caches & configuration
address_space_config m_program_config;
address_space_config m_iram_config;
address_space_config m_sfr_config;
const offs_t m_iram_addrmask;
address_space *m_program_space;
memory_access_cache<0, 0, ENDIANNESS_LITTLE> *m_program_cache;
memory_access_cache<1, 0, ENDIANNESS_LITTLE> *m_iram_cache;
address_space *m_sfr_space;
// core registers and execution state
u16 m_pc;
u16 m_ppc;
u8 m_psw;
u16 m_sp;
s32 m_icount;
};
// ======================> upd78210_device
class upd78210_device : public upd78k2_device
{
public:
// device type constructor
upd78210_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
protected:
// device_disasm_interface overrides
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
private:
// type-specific internal memory maps
void sfr_map(address_map &map);
};
// ======================> upd78213_device
class upd78213_device : public upd78k2_device
{
public:
// device type constructor
upd78213_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
protected:
// device_disasm_interface overrides
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
private:
// type-specific internal memory maps
void mem_map(address_map &map);
void sfr_map(address_map &map);
};
// device type declarations
DECLARE_DEVICE_TYPE(UPD78210, upd78210_device)
DECLARE_DEVICE_TYPE(UPD78213, upd78213_device)
#endif // MAME_CPU_UPD78K_UPD78K2_H
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