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Annotation of nono/vm/newsctlr.h, revision 1.1.1.5

1.1       root        1: //
                      2: // nono
                      3: // Copyright (C) 2022 nono project
                      4: // Licensed under nono-license.txt
                      5: //
                      6: 
                      7: //
                      8: // NEWS の各種制御ポート(?)
                      9: //
                     10: 
                     11: #pragma once
                     12: 
                     13: #include "device.h"
                     14: #include "event.h"
                     15: #include <array>
                     16: 
                     17: class DipswDevice;
                     18: class NewsInterrupt;
1.1.1.4   root       19: class TextScreen;
1.1       root       20: 
                     21: class NewsCtlrDevice : public IODevice
                     22: {
                     23:        using inherited = IODevice;
                     24: 
1.1.1.5 ! root       25:        // システムタイマーの周期
        !            26:        static const uint64 TIMER_PERIOD        = 10_msec;
        !            27: 
1.1       root       28:  public:
                     29:        // LED 種別
                     30:        static const uint LED_GREEN             = 0x01;
                     31:        static const uint LED_ORANGE    = 0x02;
                     32: 
                     33:  public:
                     34:        NewsCtlrDevice();
                     35:        ~NewsCtlrDevice() override;
                     36: 
                     37:        bool Init() override;
                     38:        void ResetHard(bool poweron) override;
                     39: 
1.1.1.4   root       40:        busdata Read(busaddr addr) override;
                     41:        busdata Write(busaddr addr, uint32 data) override;
                     42:        busdata Peek1(uint32 addr) override;
1.1       root       43: 
1.1.1.2   root       44:        uint GetLED() const { return led; }
1.1       root       45: 
1.1.1.3   root       46:        void MonitorUpdateNewsCtlr(TextScreen& screen, int y);
                     47: 
1.1       root       48:  private:
                     49:        uint8 GetIDROM(uint32 addr) const;
                     50:        uint8 GetDIPSW() const;
                     51:        void WriteLED(uint32 data);
                     52:        void WriteTimer(uint32 data);
                     53:        void TimerCallback(Event&);
                     54:        void ChangeInterrupt();
                     55: 
                     56:        // 割り込みコントローラ
                     57:        NewsInterrupt *interrupt {};
                     58: 
                     59:        // 256 x 4bit ROM (ここではデータをバイト単位で保持する)
                     60:        std::array<uint8, 128> oidrom {};
                     61: 
1.1.1.2   root       62:        uint led {};
1.1       root       63:        // タイマー
                     64:        bool timer_intr {};
                     65:        bool timer_enable {};
                     66: 
1.1.1.5 ! root       67:        // システムタイマーが刻んている時刻。
        !            68:        uint64 stime {};
        !            69: 
        !            70:        // システムタイマーを実時間に同期する場合 true
        !            71:        bool sync_rt {};
        !            72: 
1.1       root       73:        DipswDevice *dipsw {};
                     74: 
                     75:        Event timer_event { this };
                     76: };
                     77: 
                     78: static inline NewsCtlrDevice *GetNewsCtlrDevice() {
                     79:        return Object::GetObject<NewsCtlrDevice>(OBJ_NEWSCTLR);
                     80: }

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