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

1.1       root        1: //
                      2: // nono
                      3: // Copyright (C) 2022 nono project
                      4: // Licensed under nono-license.txt
                      5: //
                      6: 
                      7: //
                      8: // NEWS の ROM エミュレーション (-X のみ対応)
                      9: //
                     10: 
                     11: #pragma once
                     12: 
                     13: #include "rom.h"
                     14: 
                     15: class MainRAMDevice;
                     16: 
                     17: class NewsROMEmuDevice : public ROMDevice
                     18: {
                     19:        using inherited = ROMDevice;
                     20: 
                     21:  protected:
                     22:        // このデバイス先頭アドレス
                     23:        static const uint32 baseaddr            = 0xf8000000;
                     24: 
                     25:        // 謎の I/O 空間
                     26:        static const uint32 ROMIO_BASE          = 0xf8010000;
                     27:        static const uint32 ROMIO_INIT          = (ROMIO_BASE + 0);
                     28:        static const uint32 ROMIO_SYS           = (ROMIO_BASE + 4);
                     29: 
                     30:        // NEWS の ROM サービスコール?
                     31:        static const uint32 SYS_reboot  = 0;
                     32:        static const uint32 SYS_exit    = 1;
                     33:        static const uint32 SYS_read    = 3;
                     34:        static const uint32 SYS_write   = 4;
                     35: 
                     36:  public:
                     37:        NewsROMEmuDevice();
1.1.1.2 ! root       38:        ~NewsROMEmuDevice() override;
1.1       root       39: 
                     40:        bool Init() override;
                     41:        void ResetHard(bool poweron) override;
                     42: 
1.1.1.2 ! root       43:        busdata Read32(uint32 addr) override;
1.1       root       44: 
                     45:  private:
                     46:        uint32 ROM_Init();
                     47:        uint32 ROM_Sys();
                     48: 
                     49:        MainRAMDevice *mainram {};
                     50: };

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