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

1.1     ! root        1: //
        !             2: // nono
        !             3: // Copyright (C) 2017 [email protected]
        !             4: //
        !             5: 
        !             6: #pragma once
        !             7: 
        !             8: #include "device.h"
        !             9: #include <atomic>
        !            10: 
        !            11: class TVRAMDevice
        !            12:        : public IODevice
        !            13: {
        !            14:        typedef IODevice inherited;
        !            15:  private:
        !            16:        static const int baseaddr = 0xe00000;
        !            17: 
        !            18:        struct tvram {
        !            19:                bool sa;                                // 同時アクセス
        !            20:                bool ap[4];                             // 同時アクセスプレーン
        !            21:        };
        !            22: 
        !            23:  public:
        !            24:        TVRAMDevice();
        !            25:        virtual ~TVRAMDevice();
        !            26: 
        !            27:        virtual void ResetHard();
        !            28: 
        !            29:        virtual uint64 Read8(uint32 addr);
        !            30:        virtual uint64 Read16(uint32 addr);
        !            31:        virtual uint64 Write8(uint32 addr, uint32 data);
        !            32:        virtual uint64 Write16(uint32 addr, uint32 data);
        !            33:        virtual uint64 Peek8(uint32 addr);
        !            34: 
        !            35:        void set_crtc_21(uint16 data);
        !            36: 
        !            37:        bool Render(uint8 *);
        !            38: 
        !            39:  private:
        !            40:        void Invalidate();
        !            41: 
        !            42:        uint8 *mem = NULL;
        !            43:        // XXX 実際には縦がこれ以上になる可能性はある
        !            44:        std::atomic<uint8> atomic_dirty[1024] {};
        !            45:        struct tvram tvram {};
        !            46: };
        !            47: 
        !            48: extern TVRAMDevice *gTVRAM;

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