// license:BSD-3-Clause // copyright-holders:AJR #ifndef MAME_CPU_NIOS2_NIOS2_H #define MAME_CPU_NIOS2_NIOS2_H #pragma once class nios2_device : public cpu_device { public: enum { NIOS2_ZERO = 0, NIOS2_AT, NIOS2_R2, NIOS2_R3, NIOS2_R4, NIOS2_R5, NIOS2_R6, NIOS2_R7, NIOS2_R8, NIOS2_R9, NIOS2_R10, NIOS2_R11, NIOS2_R12, NIOS2_R13, NIOS2_R14, NIOS2_R15, NIOS2_R16, NIOS2_R17, NIOS2_R18, NIOS2_R19, NIOS2_R20, NIOS2_R21, NIOS2_R22, NIOS2_R23, NIOS2_ET, NIOS2_BT, NIOS2_GP, NIOS2_SP, NIOS2_FP, NIOS2_EA, NIOS2_BA, NIOS2_RA, NIOS2_PC, NIOS2_STATUS, NIOS2_BSTATUS, NIOS2_ESTATUS, NIOS2_IENABLE, NIOS2_IPENDING, NIOS2_CPUID, NIOS2_CTLID, NIOS2_EXCEPTION, NIOS2_PTEADDR, NIOS2_TLBACC, NIOS2_TLBMISC, NIOS2_ECCINJ, NIOS2_BADADDR, NIOS2_CONFIG, NIOS2_MPUBASE, NIOS2_MPUACC }; // construction/destruction nios2_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); protected: // 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_disasm_interface overrides virtual std::unique_ptr create_disassembler() override; // device_memory_interface overrides virtual space_config_vector memory_space_config() const override; private: u32 get_reg(unsigned r) const noexcept { return r == 0 ? 0 : m_gpr[r]; } u32 read_ctl(unsigned r) const; void write_ctl(unsigned r, u32 val); // address space address_space_config m_program_config; memory_access<32, 2, 0, ENDIANNESS_LITTLE>::specific m_space; memory_access<32, 2, 0, ENDIANNESS_LITTLE>::cache m_cache; // internal registers u32 m_gpr[32]; u32 m_ctl[16]; u32 m_pc; s32 m_icount; }; // device type definition DECLARE_DEVICE_TYPE(NIOS2, nios2_device) #endif // MAME_CPU_NIOS2_NIOS2_H