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Annotation of nono/vm/mainram.h, revision 1.1

1.1     ! root        1: //
        !             2: // nono
        !             3: // Copyright (C) 2020 nono project
        !             4: // Licensed under nono-license.txt
        !             5: //
        !             6: 
        !             7: //
        !             8: // メインメモリ
        !             9: //
        !            10: 
        !            11: #pragma once
        !            12: 
        !            13: #include "device.h"
        !            14: #include "bootloader.h"
        !            15: 
        !            16: class MainRAMDevice : public IODevice
        !            17: {
        !            18:        using inherited = IODevice;
        !            19:  public:
        !            20:        MainRAMDevice();
        !            21:        virtual ~MainRAMDevice() override;
        !            22: 
        !            23:        bool Init() override;
        !            24:        void ResetHard(bool poweron) override;
        !            25: 
        !            26:        uint64 Read8(uint32 addr) override;
        !            27:        uint64 Read16(uint32 addr) override;
        !            28:        uint64 Read32(uint32 addr) override;
        !            29:        uint64 Write8(uint32 addr, uint32 data) override;
        !            30:        uint64 Write16(uint32 addr, uint32 data) override;
        !            31:        uint64 Write32(uint32 addr, uint32 data) override;
        !            32:        uint64 Peek8(uint32 addr) override;
        !            33:        uint64 Poke8(uint32 addr, uint32 data) override;
        !            34: 
        !            35:        // RAM 容量(バイト単位)を取得
        !            36:        int GetSize() const     { return ram_size; }
        !            37:        // RAM 容量(MB単位)を取得
        !            38:        int GetSizeMB() const { return (uint)ram_size / 1024 / 1024; }
        !            39: 
        !            40:        // アクセスウェイトを設定
        !            41:        void SetWait(uint32 wait);
        !            42: 
        !            43:        // path で指定されたホストファイルをロードする
        !            44:        bool LoadFromFile(LoadInfo *);
        !            45:        // data, size で指定されたバッファをロードする
        !            46:        bool LoadFromData(LoadInfo *);
        !            47: 
        !            48:        static std::unique_ptr<uint8[]> mainram;
        !            49: 
        !            50:  private:
        !            51:        // RAM 容量(バイト単位)。ram[] の確保したバイト数
        !            52:        int ram_size {};
        !            53: 
        !            54:        uint32 read_wait {};
        !            55:        uint32 write_wait {};
        !            56: };
        !            57: 
        !            58: static inline MainRAMDevice *GetMainRAMDevice() {
        !            59:        return Object::GetObject<MainRAMDevice>(OBJ_MAINRAM);
        !            60: }

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