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Diffstat (limited to 'src/devices/cpu/upd78k/upd78k0.h')
-rw-r--r-- | src/devices/cpu/upd78k/upd78k0.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/devices/cpu/upd78k/upd78k0.h b/src/devices/cpu/upd78k/upd78k0.h new file mode 100644 index 00000000000..d0b5acb506c --- /dev/null +++ b/src/devices/cpu/upd78k/upd78k0.h @@ -0,0 +1,107 @@ +// license:BSD-3-Clause +// copyright-holders:AJR +/********************************************************************** + + NEC 78K/0 series 8-bit single-chip microcontrollers + +**********************************************************************/ + +#ifndef MAME_CPU_UPD78K_UPD78K0_H +#define MAME_CPU_UPD78K_UPD78K0_H + +#pragma once + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> upd78k0_device + +class upd78k0_device : public cpu_device +{ +public: + enum { + UPD78K0_PC, UPD78K0_PSW, UPD78K0_RBS, UPD78K0_SP, + UPD78K0_AX, UPD78K0_BC, + UPD78K0_DE, UPD78K0_HL, + UPD78K0_X, UPD78K0_A, UPD78K0_C, UPD78K0_B, + UPD78K0_D, UPD78K0_E, UPD78K0_H, UPD78K0_L + }; + + // configuration (TODO: callbacks) + void set_subclock(u32 clock) { m_subclock = clock; } + void set_subclock(const XTAL &xtal) { m_subclock = xtal.value(); } + +protected: + upd78k0_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, u16 iram_size, 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; + + // 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 u16 register_base() const noexcept; + inline u16 debug_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 u16 m_iram_size; + memory_access<16, 0, 0, ENDIANNESS_LITTLE>::cache m_program_cache; + memory_access<10, 1, 0, ENDIANNESS_LITTLE>::cache m_iram_cache; + memory_access<16, 0, 0, ENDIANNESS_LITTLE>::specific m_program_space; + memory_access< 8, 1, 0, ENDIANNESS_LITTLE>::specific m_sfr_space; + + // miscellaneous configuration + u32 m_subclock; + + // core registers and execution state + u16 m_pc; + u16 m_ppc; + u8 m_psw; + u16 m_sp; + s32 m_icount; +}; + +// ======================> upd78053_device + +class upd78053_device : public upd78k0_device +{ +public: + // device type constructors + upd78053_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); + template <typename X> + upd78053_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock, X &&subclock) + : upd78053_device(mconfig, tag, owner, clock) + { + set_subclock(std::forward<X>(subclock)); + } + +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) ATTR_COLD; + void sfr_map(address_map &map) ATTR_COLD; +}; + +// device type declaration +DECLARE_DEVICE_TYPE(UPD78053, upd78053_device) + +#endif // MAME_CPU_UPD78K_UPD78K0_H |