// 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 ATTR_COLD; virtual void device_reset() override ATTR_COLD; // 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) ATTR_COLD; // 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; memory_access<20, 0, 0, ENDIANNESS_LITTLE>::cache m_program_cache; memory_access< 8, 1, 0, ENDIANNESS_LITTLE>::cache m_iram_cache; memory_access<20, 0, 0, ENDIANNESS_LITTLE>::specific m_program_space; memory_access< 8, 1, 0, ENDIANNESS_LITTLE>::specific 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 create_disassembler() override; private: // type-specific internal memory maps void sfr_map(address_map &map) ATTR_COLD; }; // ======================> 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 create_disassembler() override; private: // type-specific internal memory maps void mem_map(address_map &map) ATTR_COLD; void sfr_map(address_map &map) ATTR_COLD; }; // device type declarations DECLARE_DEVICE_TYPE(UPD78210, upd78210_device) DECLARE_DEVICE_TYPE(UPD78213, upd78213_device) #endif // MAME_CPU_UPD78K_UPD78K2_H