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Annotation of nono/vm/mainram.h, revision 1.1.1.2

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();
1.1.1.2 ! root       21:        ~MainRAMDevice() override;
1.1       root       22: 
                     23:        bool Init() override;
                     24:        void ResetHard(bool poweron) override;
                     25: 
1.1.1.2 ! root       26:        busdata Read8(uint32 addr) override;
        !            27:        busdata Read16(uint32 addr) override;
        !            28:        busdata Read32(uint32 addr) override;
        !            29:        busdata Write8(uint32 addr, uint32 data) override;
        !            30:        busdata Write16(uint32 addr, uint32 data) override;
        !            31:        busdata Write32(uint32 addr, uint32 data) override;
        !            32:        busdata Peek8(uint32 addr) override;
        !            33:        bool Poke8(uint32 addr, uint32 data) override;
1.1       root       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: 
1.1.1.2 ! root       40:        // アクセスウェイト [clock] を設定
1.1       root       41:        void SetWait(uint32 wait);
                     42: 
1.1.1.2 ! root       43:        // info で指定された実行ファイルをロードする
        !            44:        bool LoadExec(LoadInfo *);
        !            45: 
        !            46:        // info で指定されたデータファイルをロードする
        !            47:        bool LoadData(LoadInfo *);
1.1       root       48: 
                     49:        static std::unique_ptr<uint8[]> mainram;
                     50: 
                     51:  private:
                     52:        // RAM 容量(バイト単位)。ram[] の確保したバイト数
                     53:        int ram_size {};
                     54: 
1.1.1.2 ! root       55:        // アクセスウェイト
        !            56:        busdata read_wait {};
        !            57:        busdata write_wait {};
1.1       root       58: };
                     59: 
                     60: static inline MainRAMDevice *GetMainRAMDevice() {
                     61:        return Object::GetObject<MainRAMDevice>(OBJ_MAINRAM);
                     62: }

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