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

1.1     ! root        1: //
        !             2: // nono
        !             3: // Copyright (C) 2023 nono project
        !             4: // Licensed under nono-license.txt
        !             5: //
        !             6: 
        !             7: //
        !             8: // Nereid Ethernet/メモリ/USB 複合ボード (のうち Ethernet/バンクメモリ)
        !             9: //
        !            10: 
        !            11: #pragma once
        !            12: 
        !            13: #include "device.h"
        !            14: #include "monitor.h"
        !            15: #include <array>
        !            16: 
        !            17: class BankRAMDevice;
        !            18: class NereidBoardDevice;
        !            19: class RTL8019ASDevice;
        !            20: 
        !            21: // Nereid 空間担当
        !            22: class NereidDevice : public IODevice
        !            23: {
        !            24:        using inherited = IODevice;
        !            25: 
        !            26:  public:
        !            27:        NereidDevice();
        !            28:        ~NereidDevice() override;
        !            29: 
        !            30:        bool Create() override;
        !            31: 
        !            32:        uint64 Read8(uint32 addr) override;
        !            33:        uint64 Read16(uint32 addr) override;
        !            34:        uint64 Write8(uint32 addr, uint32 data) override;
        !            35:        uint64 Write16(uint32 addr, uint32 data) override;
        !            36:        uint64 Peek8(uint32 addr) override;
        !            37: 
        !            38:        // Nereid が1枚でもささっていれば true。
        !            39:        bool IsInstalled() const;
        !            40: 
        !            41:  private:
        !            42:        inline uint32 Decoder(uint32 addr) const;
        !            43:        DECLARE_MONITOR_CALLBACK(MonitorUpdate);
        !            44: 
        !            45:        // ボードの有無と配置場所 (有りなら $3 か $b、無しなら -1)
        !            46:        std::array<int, 2> loc {};
        !            47: 
        !            48:        std::array<std::unique_ptr<NereidBoardDevice>, 2> boards {};
        !            49: 
        !            50:        Monitor monitor { this };
        !            51: };
        !            52: 
        !            53: // Nereid ボード1枚分
        !            54: class NereidBoardDevice : public IODevice
        !            55: {
        !            56:        using inherited = IODevice;
        !            57: 
        !            58:  public:
        !            59:        NereidBoardDevice(int n_);
        !            60:        ~NereidBoardDevice() override;
        !            61: 
        !            62:        bool Create() override;
        !            63: 
        !            64:        uint64 Read8(uint32 addr) override;
        !            65:        uint64 Read16(uint32 addr) override;
        !            66:        uint64 Write8(uint32 addr, uint32 data) override;
        !            67:        uint64 Write16(uint32 addr, uint32 data) override;
        !            68:        uint64 Peek8(uint32 addr) override;
        !            69: 
        !            70:        // ネットワークが有効なら true を返す
        !            71:        bool IsNetEnable() const { return (bool)net; }
        !            72:        // バンクメモリの容量 [MB] を返す (負数の場合もあり)
        !            73:        int GetBankRAMSize() const { return ramsize_MB; }
        !            74: 
        !            75:        uint32 GetPage() const;
        !            76: 
        !            77:  private:
        !            78:        inline uint32 Decoder(uint32 addr) const;
        !            79: 
        !            80:        void SetPage(uint32 data);
        !            81: 
        !            82:        uint32 GetCtrl() const;
        !            83:        void SetCtrl(uint32 data);
        !            84: 
        !            85:        // 1枚目 or 2枚目
        !            86:        uint id {};
        !            87: 
        !            88:        // バンクメモリ容量 (負数あり)
        !            89:        int ramsize_MB {};
        !            90: 
        !            91:        // デバイス
        !            92:        std::unique_ptr<BankRAMDevice> bank /*{}*/;
        !            93:        std::unique_ptr<RTL8019ASDevice> net /*{}*/;
        !            94: };
        !            95: 
        !            96: static inline NereidDevice *GetNereidDevice() {
        !            97:        return Object::GetObject<NereidDevice>(OBJ_NEREID);
        !            98: }

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