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Annotation of nono/vm/tvram.h, revision 1.1.1.8

1.1       root        1: //
                      2: // nono
1.1.1.3   root        3: // Copyright (C) 2020 nono project
                      4: // Licensed under nono-license.txt
1.1       root        5: //
                      6: 
1.1.1.8 ! root        7: //
        !             8: // TVRAM
        !             9: //
        !            10: 
1.1       root       11: #pragma once
                     12: 
1.1.1.8 ! root       13: #include "planevram.h"
1.1       root       14: 
1.1.1.8 ! root       15: class TVRAMDevice : public PlaneVRAMDevice
1.1       root       16: {
1.1.1.8 ! root       17:        using inherited = PlaneVRAMDevice;
        !            18: 
1.1       root       19:        static const int baseaddr = 0xe00000;
                     20: 
1.1.1.8 ! root       21:        // プレーン数は4枚固定
        !            22:        static const int NPLANE = 4;
        !            23: 
1.1       root       24:        struct tvram {
                     25:                bool sa;                                // 同時アクセス
1.1.1.8 ! root       26:                bool ap[NPLANE];                // 同時アクセスプレーン
        !            27:                bool cp[NPLANE];                // ラスターコピー対象
        !            28:                bool men;                               // アクセスマスクイネーブル
        !            29:                uint16 mask;                    // アクセスマスク
1.1       root       30:        };
                     31: 
                     32:  public:
                     33:        TVRAMDevice();
1.1.1.6   root       34:        virtual ~TVRAMDevice() override;
1.1       root       35: 
1.1.1.8 ! root       36:        bool Init() override;
        !            37:        void ResetHard(bool poweron) override;
1.1       root       38: 
1.1.1.3   root       39:        uint64 Read8(uint32 addr) override;
                     40:        uint64 Read16(uint32 addr) override;
                     41:        uint64 Write8(uint32 addr, uint32 data) override;
                     42:        uint64 Write16(uint32 addr, uint32 data) override;
                     43:        uint64 Peek8(uint32 addr) override;
1.1       root       44: 
1.1.1.8 ! root       45:        void SetAccessPlane(uint16 data);
        !            46:        void SetAccessMask(uint16 data);
1.1.1.3   root       47:        void SetScrollX(int x);
                     48:        void SetScrollY(int y);
1.1.1.8 ! root       49:        void RasterCopy(int src_ras, int dst_ras);
1.1       root       50: 
                     51:  private:
1.1.1.2   root       52:        // アドレスデコーダ
                     53:        uint64 Decoder(uint32 addr) const;
                     54: 
1.1.1.8 ! root       55:        inline void SetDirty(uint32 offset);
1.1       root       56: 
                     57:        struct tvram tvram {};
                     58: };
                     59: 
1.1.1.8 ! root       60: #define gTVRAM (dynamic_cast<TVRAMDevice *>(gPlaneVRAM))

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