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Annotation of nono/vm/subram.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: // サブメモリ
        !             9: //
        !            10: 
        !            11: #pragma once
        !            12: 
        !            13: #include "device.h"
        !            14: 
        !            15: // サブメモリ (基本クラス)
        !            16: class SubRAMBaseDevice : public IODevice
        !            17: {
        !            18:        using inherited = IODevice;
        !            19:  public:
        !            20:        SubRAMBaseDevice(int objid_, uint ramsize_kb);
        !            21:        virtual ~SubRAMBaseDevice() override;
        !            22: 
        !            23:        void ResetHard(bool poweron) override;
        !            24: 
        !            25:        uint64 Read8(uint32 addr) override;
        !            26:        uint64 Read16(uint32 addr) override;
        !            27:        uint64 Read32(uint32 addr) override;
        !            28:        uint64 Write8(uint32 addr, uint32 data) override;
        !            29:        uint64 Write16(uint32 addr, uint32 data) override;
        !            30:        uint64 Write32(uint32 addr, uint32 data) override;
        !            31:        uint64 Peek8(uint32 addr) override;
        !            32:        uint64 Poke8(uint32 addr, uint32 data) override;
        !            33: 
        !            34:  private:
        !            35:        // アドレスデコーダ
        !            36:        uint64 Decoder(uint32 addr) const;
        !            37: 
        !            38:        std::unique_ptr<uint8[]> ram {};
        !            39:        uint ramsize {};
        !            40: };
        !            41: 
        !            42: // サブメモリ (XP/Lance との共有 RAM)
        !            43: class SubRAMDevice : public SubRAMBaseDevice
        !            44: {
        !            45:        using inherited = SubRAMBaseDevice;
        !            46:  public:
        !            47:        SubRAMDevice(int ramsize_kb);
        !            48:        ~SubRAMDevice() override;
        !            49: 
        !            50:        void ResetHard(bool poweron) override;
        !            51: };
        !            52: 
        !            53: // サブメモリ2 (XP の非共有部)
        !            54: class SubRAM2Device : public SubRAMBaseDevice
        !            55: {
        !            56:        using inherited = SubRAMBaseDevice;
        !            57:  public:
        !            58:        SubRAM2Device(int ramsize_kb);
        !            59:        ~SubRAM2Device() override;
        !            60: };
        !            61: 
        !            62: static inline SubRAMDevice *GetSubRAMDevice() {
        !            63:        return Object::GetObject<SubRAMDevice>(OBJ_SUBRAM);
        !            64: }

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